from:"Oleksii Kurochko"

[PATCH v6 2/2] xen: move arm/include/asm/vm_event.h to asm-generic

2023-09-07 Thread Oleksii Kurochko

asm/vm_event.h is common for ARM and RISC-V so it will be moved to
asm-generic dir.

Original asm/vm_event.h from ARM was updated:
 * use SPDX-License-Identifier.
 * update comment messages of stubs.
 * update #ifdef
 * instead of "include " -> "public/vm_event.h"

As vm_event.h was moved to asm-generic then it is needed to create
Makefile in arm/include/asm/ and add generated-y += vm_event.h to
it.

Signed-off-by: Oleksii Kurochko 
---
Changes in V6:
 - update the commit message.
---
Changes in V5:
 - Update the commit message
 - Remove Acked-by:...
 - Switch ARM to use asm-generic/vm_event.h
---
Changes in V4:
 - update path of vm_event.h from include/asm-generic/asm to include/asm-generic
---
Changes in V3:
 - add Acked-by: Stefano Stabellini  for "xen: move 
arm/include/asm/vm_event.h to asm-generic"
 - update SPDX tag.
 - move asm/vm_event.h to asm-generic.
---
Changes in V2:
 - change public/domctl.h to public/vm_event.h.
 - update commit message of [PATCH v2 2/2] xen: move arm/include/asm/vm_event.h 
to stubs
---
 xen/arch/arm/include/asm/Makefile   |  2 +
 xen/arch/arm/include/asm/vm_event.h | 66 -
 xen/include/asm-generic/vm_event.h  | 55 
 3 files changed, 57 insertions(+), 66 deletions(-)
 create mode 100644 xen/arch/arm/include/asm/Makefile
 delete mode 100644 xen/arch/arm/include/asm/vm_event.h
 create mode 100644 xen/include/asm-generic/vm_event.h

diff --git a/xen/arch/arm/include/asm/Makefile 
b/xen/arch/arm/include/asm/Makefile
new file mode 100644
index 00..821addb0bf
--- /dev/null
+++ b/xen/arch/arm/include/asm/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+generic-y += vm_event.h
diff --git a/xen/arch/arm/include/asm/vm_event.h 
b/xen/arch/arm/include/asm/vm_event.h
deleted file mode 100644
index 4d861373b3..00
--- a/xen/arch/arm/include/asm/vm_event.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * vm_event.h: architecture specific vm_event handling routines
- *
- * Copyright (c) 2015 Tamas K Lengyel (ta...@tklengyel.com)
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __ASM_ARM_VM_EVENT_H__
-#define __ASM_ARM_VM_EVENT_H__
-
-#include 
-#include 
-
-static inline int vm_event_init_domain(struct domain *d)
-{
-/* Nothing to do. */
-return 0;
-}
-
-static inline void vm_event_cleanup_domain(struct domain *d)
-{
-memset(>monitor, 0, sizeof(d->monitor));
-}
-
-static inline void vm_event_toggle_singlestep(struct domain *d, struct vcpu *v,
-  vm_event_response_t *rsp)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_register_write_resume(struct vcpu *v, vm_event_response_t *rsp)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_emulate_check(struct vcpu *v, vm_event_response_t *rsp)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_sync_event(struct vcpu *v, bool value)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_reset_vmtrace(struct vcpu *v)
-{
-/* Not supported on ARM. */
-}
-
-#endif /* __ASM_ARM_VM_EVENT_H__ */
diff --git a/xen/include/asm-generic/vm_event.h 
b/xen/include/asm-generic/vm_event.h
new file mode 100644
index 00..29ab1b01b4
--- /dev/null
+++ b/xen/include/asm-generic/vm_event.h
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier:  GPL-2.0-only */
+/*
+ * vm_event.h: stubs for architecture specific vm_event handling routines
+ *
+ * Copyright (c) 2015 Tamas K Lengyel (ta...@tklengyel.com)
+ */
+
+#ifndef __ASM_STUB_VM_EVENT_H__
+#define __ASM_STUB_VM_EVENT_H__
+
+#include 
+#include 
+
+static inline int vm_event_init_domain(struct domain *d)
+{
+/* Nothing to do. */
+return 0;
+}
+
+static inline void vm_event_cleanup_domain(struct domain *d)
+{
+memset(>monitor, 0, sizeof(d->monitor));
+}
+
+static inline void vm_event_toggle_singlestep(struct domain *d, struct vcpu *v,
+  vm_event_response_t *rsp)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_register_write_resume(struct vcpu *v, vm_event_response_t *rsp)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_emulate_check(struct vcpu *v, vm_event_response_t *rsp)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_sync_event(struct vcpu *v, bool value)
+{
+/* Nothing to do. */
+}
+

[PATCH v6 1/2] xen: asm-generic support

2023-09-07 Thread Oleksii Kurochko

Some headers are shared between individual architectures or are empty.
To avoid duplication of these headers, asm-generic is introduced.

With the following patch, an architecture uses generic headers
mentioned in the file arch/$(ARCH)/include/asm/Makefile

To use a generic header is needed to add to
arch/$(ARCH)/include/asm/Makefile :
generic-y += 

For each mentioned header in arch/$(ARCH)/include/asm/Makefile,
the necessary wrapper in arch/$(ARCH)/include/generated/asm will be
generated.

As the base Makefile.asm-generic from Linux kernel was taken.
( 06c2afb862f9da8 "Linux 6.5-rc1" ).

Signed-off-by: Oleksii Kurochko 
---
Changes in V6:
 - introduce $(asm-generic) macro in Kbuild.include.
 - move "asm-generic" after the rule "__distclean".
---
Changes in V5:
 - Update the commit message
 - Update SPDX license in Makefile.
 - Remove code related to UML
 - Include $(src)/Makefile instead of $(kbuild-file) 
 - Update comment message in Makefile.asm-generic
 - Update .gitignore
 - Update path to generated headers in CFLAGS.
 - Use the latest version of Linux's Makefile.asm-generic
---
Changes in V4:
 - introduce asm-generic support
 - update commit message
---
Changes in V3:
 - Rename stubs dir to asm-generic
---
Changes in V2:
 - Nothing changed.
---
 .gitignore   |  1 +
 xen/Makefile |  9 +-
 xen/scripts/Kbuild.include   |  6 
 xen/scripts/Makefile.asm-generic | 53 
 4 files changed, 68 insertions(+), 1 deletion(-)
 create mode 100644 xen/scripts/Makefile.asm-generic

diff --git a/.gitignore b/.gitignore
index 50273adb8d..287166f8fc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -267,6 +267,7 @@ xen/arch/*/efi/efi.h
 xen/arch/*/efi/pe.c
 xen/arch/*/efi/runtime.c
 xen/arch/*/include/asm/asm-offsets.h
+xen/arch/*/include/generated
 xen/build-dir-cppcheck/
 xen/common/config_data.S
 xen/common/config.gz
diff --git a/xen/Makefile b/xen/Makefile
index f57e5a596c..2dc5e3526d 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -438,6 +438,7 @@ ifdef building_out_of_srctree
 endif
 CFLAGS += -I$(srctree)/include
 CFLAGS += -I$(srctree)/arch/$(SRCARCH)/include
+CFLAGS += -I$(objtree)/arch/$(SRCARCH)/include/generated
 
 # Note that link order matters!
 ALL_OBJS-y:= common/built_in.o
@@ -580,16 +581,22 @@ _clean:
rm -f $(TARGET).efi $(TARGET).efi.map $(TARGET).efi.elf 
$(TARGET).efi.stripped
rm -f asm-offsets.s arch/*/include/asm/asm-offsets.h
rm -f .banner .allconfig.tmp include/xen/compile.h
+   rm -rf $(objtree)/arch/*/include/generated
 
 .PHONY: _distclean
 _distclean: clean
rm -f tags TAGS cscope.files cscope.in.out cscope.out cscope.po.out 
GTAGS GPATH GRTAGS GSYMS .config source
 
+# Support for using generic headers in asm-generic
+PHONY += asm-generic
+asm-generic:
+   $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/asm
+
 $(TARGET).gz: $(TARGET)
gzip -n -f -9 < $< > $@.new
mv $@.new $@
 
-$(TARGET): outputmakefile FORCE
+$(TARGET): outputmakefile asm-generic FORCE
$(Q)$(MAKE) $(build)=tools
$(Q)$(MAKE) $(build)=. include/xen/compile.h
$(Q)$(MAKE) $(build)=include all
diff --git a/xen/scripts/Kbuild.include b/xen/scripts/Kbuild.include
index 785a32c32e..c2bd8498e1 100644
--- a/xen/scripts/Kbuild.include
+++ b/xen/scripts/Kbuild.include
@@ -91,6 +91,12 @@ cc-ifversion = $(shell [ $(CONFIG_GCC_VERSION)0 $(1) $(2)000 
] && echo $(3) || e
 
 clang-ifversion = $(shell [ $(CONFIG_CLANG_VERSION)0 $(1) $(2)000 ] && echo 
$(3) || echo $(4))
 
+###
+# Shorthand for $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic obj
+# Usage:
+# $(Q)$(MAKE) $(asm-generic)=dir
+asm-generic := -f $(srctree)/scripts/Makefile.asm-generic obj
+
 ###
 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj=
 # Usage:
diff --git a/xen/scripts/Makefile.asm-generic b/xen/scripts/Makefile.asm-generic
new file mode 100644
index 00..92a3a741c5
--- /dev/null
+++ b/xen/scripts/Makefile.asm-generic
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: GPL-2.0-only
+# include/asm-generic contains a lot of files that are used
+# verbatim by several architectures.
+#
+# This Makefile reads the file arch/$(SRCARCH)/include/asm/Makefile
+# and for each file listed in this file with generic-y creates
+# a small wrapper file in arch/$(SRCARCH)/include/generated/asm.
+
+PHONY := all
+all:
+
+src := $(subst /generated,,$(obj))
+
+include $(srctree)/scripts/Kbuild.include
+-include $(src)/Makefile
+
+redundant := $(filter $(mandatory-y) $(generated-y), $(generic-y))
+redundant += $(foreach f, $(generic-y), $(if $(wildcard 
$(srctree)/$(src)/$(f)),$(f)))
+redundant := $(sort $(redundant))
+$(if $(redundant),\
+   $(warning redundant generic-y found in $(src)/Kbuild: $(redundant)))
+
+# If arch does not implement mandatory headers, fallback to asm-generic ones.
+mandatory-y := $(filter-out $(ge

[PATCH v6 0/2] introduce stub directory to storing empty/stub headers

2023-09-07 Thread Oleksii Kurochko

A lot of empty/stub headers should be introduced during the early steps of 
adding
support of new architecture.

An example can be found here:
1. 
https://lore.kernel.org/xen-devel/cover.1692181079.git.oleksii.kuroc...@gmail.com/
2. 
https://lore.kernel.org/xen-devel/a92f99e8f697da99d77bfde562a549dbef3760ce.1692816595.git.sanasta...@raptorengineering.com/

As part of the patch series, asm/vm_event.h was moved to the stubs directory 
because
It is the same for ARM, PPC, and RISC-V.

---
Changes in V6:
 - introduce $(asm-generic) macro in Kbuild.include.
 - move "asm-generic" after the rule "__distclean".
 - update the commit message.
---
Changes in V5:
- Update SPDX license.
- Remove code related to UML in Makefile.asm-generic.
- Include $(src)/Makefile instead of $(kbuild-file).
- Update comment message in Makefile.asm-generic.
- Update .gitignore.
- Update path to generated headers in CFLAGS.
- Use the latest version of Linux's Makefile.asm-generic.
- Introduce asm-generic's vm_event.h.
- Switch ARM to use asm-generic/vm_event.h.
---
Changes in V4:
 - add asm-generic support
 - update path of vm_event.h from include/asm-generic/asm to include/asm-generic
---
Changes in V3:
 - add Acked-by: Stefano Stabellini  for "xen: move 
arm/include/asm/vm_event.h to asm-generic"
 - update SPDX tag.
 - move asm/vm_event.h to asm-generic.
 - rename stubs dir to asm-generic.

---
Changes in V2:
 - change public/domctl.h to public/vm_event.h.
 - update commit message of [PATCH v2 2/2] xen: move arm/include/asm/vm_event.h 
to stubs

Oleksii Kurochko (2):
  xen: asm-generic support
  xen: move arm/include/asm/vm_event.h to asm-generic

 .gitignore  |  1 +
 xen/Makefile|  9 +++-
 xen/arch/arm/include/asm/Makefile   |  2 +
 xen/arch/arm/include/asm/vm_event.h | 66 -
 xen/include/asm-generic/vm_event.h  | 55 
 xen/scripts/Kbuild.include  |  6 +++
 xen/scripts/Makefile.asm-generic| 53 +++
 7 files changed, 125 insertions(+), 67 deletions(-)
 create mode 100644 xen/arch/arm/include/asm/Makefile
 delete mode 100644 xen/arch/arm/include/asm/vm_event.h
 create mode 100644 xen/include/asm-generic/vm_event.h
 create mode 100644 xen/scripts/Makefile.asm-generic

-- 
2.41.0

[PATCH v1 1/2] xen: add stubs dir to include path

2023-08-28 Thread Oleksii Kurochko

stubs dir will contain empty/stubs generic for all architectures
headers.

Signed-off-by: Oleksii Kurochko 
---
 xen/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/xen/Makefile b/xen/Makefile
index f57e5a596c..64c3542c84 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -438,6 +438,7 @@ ifdef building_out_of_srctree
 endif
 CFLAGS += -I$(srctree)/include
 CFLAGS += -I$(srctree)/arch/$(SRCARCH)/include
+CFLAGS += -I$(srctree)/include/stubs
 
 # Note that link order matters!
 ALL_OBJS-y:= common/built_in.o
-- 
2.41.0

[PATCH v1 0/2] introduce stub directory to storing empty/stub headers

2023-08-28 Thread Oleksii Kurochko

A lot of empty/stub headers should be introduced during the early steps of 
adding
support of new architecture.

An example can be found here:
1. 
https://lore.kernel.org/xen-devel/cover.1692181079.git.oleksii.kuroc...@gmail.com/
2. 
https://lore.kernel.org/xen-devel/a92f99e8f697da99d77bfde562a549dbef3760ce.1692816595.git.sanasta...@raptorengineering.com/

As part of the patch series, asm/vm_event.h was moved to the stubs directory 
because
It is the same for ARM, PPC, and RISC-V.

Oleksii Kurochko (2):
  xen: add stubs dir to include path
  xen: move arm/include/asm/vm_event.h to stubs

 xen/Makefile|  1 +
 xen/arch/arm/include/asm/vm_event.h | 66 -
 xen/include/stubs/asm/vm_event.h| 55 
 3 files changed, 56 insertions(+), 66 deletions(-)
 delete mode 100644 xen/arch/arm/include/asm/vm_event.h
 create mode 100644 xen/include/stubs/asm/vm_event.h

-- 
2.41.0

[PATCH v1 2/2] xen: move arm/include/asm/vm_event.h to stubs

2023-08-28 Thread Oleksii Kurochko

asm/vm_event.h is common for ARM and RISC-V so it will be moved to
stubs dir.

Original asm/vm_event.h from ARM was updated:
 * use SPDX-License-Identifier.
 * update comment messages of stubs.
 * update #ifdef

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/arm/include/asm/vm_event.h | 66 -
 xen/include/stubs/asm/vm_event.h| 55 
 2 files changed, 55 insertions(+), 66 deletions(-)
 delete mode 100644 xen/arch/arm/include/asm/vm_event.h
 create mode 100644 xen/include/stubs/asm/vm_event.h

diff --git a/xen/arch/arm/include/asm/vm_event.h 
b/xen/arch/arm/include/asm/vm_event.h
deleted file mode 100644
index 4d861373b3..00
--- a/xen/arch/arm/include/asm/vm_event.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * vm_event.h: architecture specific vm_event handling routines
- *
- * Copyright (c) 2015 Tamas K Lengyel (ta...@tklengyel.com)
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __ASM_ARM_VM_EVENT_H__
-#define __ASM_ARM_VM_EVENT_H__
-
-#include 
-#include 
-
-static inline int vm_event_init_domain(struct domain *d)
-{
-/* Nothing to do. */
-return 0;
-}
-
-static inline void vm_event_cleanup_domain(struct domain *d)
-{
-memset(>monitor, 0, sizeof(d->monitor));
-}
-
-static inline void vm_event_toggle_singlestep(struct domain *d, struct vcpu *v,
-  vm_event_response_t *rsp)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_register_write_resume(struct vcpu *v, vm_event_response_t *rsp)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_emulate_check(struct vcpu *v, vm_event_response_t *rsp)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_sync_event(struct vcpu *v, bool value)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_reset_vmtrace(struct vcpu *v)
-{
-/* Not supported on ARM. */
-}
-
-#endif /* __ASM_ARM_VM_EVENT_H__ */
diff --git a/xen/include/stubs/asm/vm_event.h b/xen/include/stubs/asm/vm_event.h
new file mode 100644
index 00..6bda6ce7df
--- /dev/null
+++ b/xen/include/stubs/asm/vm_event.h
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier:  GPL-2.0 */
+/*
+ * vm_event.h: stubs for architecture specific vm_event handling routines
+ *
+ * Copyright (c) 2015 Tamas K Lengyel (ta...@tklengyel.com)
+ */
+
+#ifndef __ASM_STUB_VM_EVENT_H__
+#define __ASM_STUB_VM_EVENT_H__
+
+#include 
+#include 
+
+static inline int vm_event_init_domain(struct domain *d)
+{
+/* Nothing to do. */
+return 0;
+}
+
+static inline void vm_event_cleanup_domain(struct domain *d)
+{
+memset(>monitor, 0, sizeof(d->monitor));
+}
+
+static inline void vm_event_toggle_singlestep(struct domain *d, struct vcpu *v,
+  vm_event_response_t *rsp)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_register_write_resume(struct vcpu *v, vm_event_response_t *rsp)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_emulate_check(struct vcpu *v, vm_event_response_t *rsp)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_sync_event(struct vcpu *v, bool value)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_reset_vmtrace(struct vcpu *v)
+{
+/* Nothing to do. */
+}
+
+#endif /* __ASM_STUB_VM_EVENT_H__ */
-- 
2.41.0

[PATCH v3 2/2] xen: move arm/include/asm/vm_event.h to asm-generic

2023-08-30 Thread Oleksii Kurochko

asm/vm_event.h is common for ARM and RISC-V so it will be moved to
asm-generic dir.

Original asm/vm_event.h from ARM was updated:
 * use SPDX-License-Identifier.
 * update comment messages of stubs.
 * update #ifdef.
 * change public/domctl.h to public/vm_event.h.

Signed-off-by: Oleksii Kurochko 
Acked-by: Stefano Stabellini 
---
Changes in V3:
 - add Acked-by: Stefano Stabellini  for "xen: move 
arm/include/asm/vm_event.h to asm-generic"
 - update SPDX tag.
 - move asm/vm_event.h to asm-generic.
---
Changes in V2:
 - change public/domctl.h to public/vm_event.h.
 - update commit message of [PATCH v2 2/2] xen: move arm/include/asm/vm_event.h 
to stubs
---
 xen/arch/arm/include/asm/vm_event.h| 66 --
 xen/include/asm-generic/asm/vm_event.h | 55 +
 2 files changed, 55 insertions(+), 66 deletions(-)
 delete mode 100644 xen/arch/arm/include/asm/vm_event.h
 create mode 100644 xen/include/asm-generic/asm/vm_event.h

diff --git a/xen/arch/arm/include/asm/vm_event.h 
b/xen/arch/arm/include/asm/vm_event.h
deleted file mode 100644
index 4d861373b3..00
--- a/xen/arch/arm/include/asm/vm_event.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * vm_event.h: architecture specific vm_event handling routines
- *
- * Copyright (c) 2015 Tamas K Lengyel (ta...@tklengyel.com)
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __ASM_ARM_VM_EVENT_H__
-#define __ASM_ARM_VM_EVENT_H__
-
-#include 
-#include 
-
-static inline int vm_event_init_domain(struct domain *d)
-{
-/* Nothing to do. */
-return 0;
-}
-
-static inline void vm_event_cleanup_domain(struct domain *d)
-{
-memset(>monitor, 0, sizeof(d->monitor));
-}
-
-static inline void vm_event_toggle_singlestep(struct domain *d, struct vcpu *v,
-  vm_event_response_t *rsp)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_register_write_resume(struct vcpu *v, vm_event_response_t *rsp)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_emulate_check(struct vcpu *v, vm_event_response_t *rsp)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_sync_event(struct vcpu *v, bool value)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_reset_vmtrace(struct vcpu *v)
-{
-/* Not supported on ARM. */
-}
-
-#endif /* __ASM_ARM_VM_EVENT_H__ */
diff --git a/xen/include/asm-generic/asm/vm_event.h 
b/xen/include/asm-generic/asm/vm_event.h
new file mode 100644
index 00..29ab1b01b4
--- /dev/null
+++ b/xen/include/asm-generic/asm/vm_event.h
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier:  GPL-2.0-only */
+/*
+ * vm_event.h: stubs for architecture specific vm_event handling routines
+ *
+ * Copyright (c) 2015 Tamas K Lengyel (ta...@tklengyel.com)
+ */
+
+#ifndef __ASM_STUB_VM_EVENT_H__
+#define __ASM_STUB_VM_EVENT_H__
+
+#include 
+#include 
+
+static inline int vm_event_init_domain(struct domain *d)
+{
+/* Nothing to do. */
+return 0;
+}
+
+static inline void vm_event_cleanup_domain(struct domain *d)
+{
+memset(>monitor, 0, sizeof(d->monitor));
+}
+
+static inline void vm_event_toggle_singlestep(struct domain *d, struct vcpu *v,
+  vm_event_response_t *rsp)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_register_write_resume(struct vcpu *v, vm_event_response_t *rsp)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_emulate_check(struct vcpu *v, vm_event_response_t *rsp)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_sync_event(struct vcpu *v, bool value)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_reset_vmtrace(struct vcpu *v)
+{
+/* Nothing to do. */
+}
+
+#endif /* __ASM_STUB_VM_EVENT_H__ */
-- 
2.41.0

[PATCH v3 1/2] xen: add asm-generic dir to include path

2023-08-30 Thread Oleksii Kurochko

asm-generic dir will contain empty/stubs generic for all architectures.

Signed-off-by: Oleksii Kurochko 
---
Changes in V3:
 - Rename stubs dir to asm-generic
---
Changes in V2:
 - Nothing changed.
---
 xen/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/xen/Makefile b/xen/Makefile
index f57e5a596c..5482c86080 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -438,6 +438,7 @@ ifdef building_out_of_srctree
 endif
 CFLAGS += -I$(srctree)/include
 CFLAGS += -I$(srctree)/arch/$(SRCARCH)/include
+CFLAGS += -I$(srctree)/include/asm-generic
 
 # Note that link order matters!
 ALL_OBJS-y:= common/built_in.o
-- 
2.41.0

[PATCH v3 0/2] introduce stub directory to storing empty/stub headers

2023-08-30 Thread Oleksii Kurochko

A lot of empty/stub headers should be introduced during the early steps of 
adding
support of new architecture.

An example can be found here:
1. 
https://lore.kernel.org/xen-devel/cover.1692181079.git.oleksii.kuroc...@gmail.com/
2. 
https://lore.kernel.org/xen-devel/a92f99e8f697da99d77bfde562a549dbef3760ce.1692816595.git.sanasta...@raptorengineering.com/

As part of the patch series, asm/vm_event.h was moved to the stubs directory 
because
It is the same for ARM, PPC, and RISC-V.

---
Changes in V3:
 - add Acked-by: Stefano Stabellini  for "xen: move 
arm/include/asm/vm_event.h to asm-generic"
 - update SPDX tag.
 - move asm/vm_event.h to asm-generic.
 - rename stubs dir to asm-generic.

---
Changes in V2:
 - change public/domctl.h to public/vm_event.h.
 - update commit message of [PATCH v2 2/2] xen: move arm/include/asm/vm_event.h 
to stubs

Oleksii Kurochko (2):
  xen: add asm-generic dir to include path
  xen: move arm/include/asm/vm_event.h to stubs

 xen/Makefile   |  1 +
 xen/arch/arm/include/asm/vm_event.h| 66 --
 xen/include/asm-generic/asm/vm_event.h | 55 +
 3 files changed, 56 insertions(+), 66 deletions(-)
 delete mode 100644 xen/arch/arm/include/asm/vm_event.h
 create mode 100644 xen/include/asm-generic/asm/vm_event.h

-- 
2.41.0

[PATCH v4 0/2] introduce stub directory to storing empty/stub headers

2023-09-01 Thread Oleksii Kurochko

A lot of empty/stub headers should be introduced during the early steps of 
adding
support of new architecture.

An example can be found here:
1. 
https://lore.kernel.org/xen-devel/cover.1692181079.git.oleksii.kuroc...@gmail.com/
2. 
https://lore.kernel.org/xen-devel/a92f99e8f697da99d77bfde562a549dbef3760ce.1692816595.git.sanasta...@raptorengineering.com/

As part of the patch series, asm/vm_event.h was moved to the stubs directory 
because
It is the same for ARM, PPC, and RISC-V.

---
Changes in V4:
 - add asm-generic support
 - update path of vm_event.h from include/asm-generic/asm to include/asm-generic
---
Changes in V3:
 - add Acked-by: Stefano Stabellini  for "xen: move 
arm/include/asm/vm_event.h to asm-generic"
 - update SPDX tag.
 - move asm/vm_event.h to asm-generic.
 - rename stubs dir to asm-generic.

---
Changes in V2:
 - change public/domctl.h to public/vm_event.h.
 - update commit message of [PATCH v2 2/2] xen: move arm/include/asm/vm_event.h 
to stubs


Oleksii Kurochko (2):
  xen: asm-generic support
  xen: move arm/include/asm/vm_event.h to asm-generic

 xen/Makefile   | 10 +-
 xen/arch/arm/include/asm/Kbuild|  1 +
 xen/arch/ppc/include/asm/Kbuild|  1 +
 xen/arch/riscv/include/asm/Kbuild  |  1 +
 xen/arch/x86/include/asm/Kbuild|  1 +
 xen/include/asm-generic/vm_event.h | 55 ++
 xen/scripts/Makefile.asm-generic   | 23 +
 7 files changed, 91 insertions(+), 1 deletion(-)
 create mode 100644 xen/arch/arm/include/asm/Kbuild
 create mode 100644 xen/arch/ppc/include/asm/Kbuild
 create mode 100644 xen/arch/riscv/include/asm/Kbuild
 create mode 100644 xen/arch/x86/include/asm/Kbuild
 create mode 100644 xen/include/asm-generic/vm_event.h
 create mode 100644 xen/scripts/Makefile.asm-generic

-- 
2.41.0

[PATCH v4 2/2] xen: move arm/include/asm/vm_event.h to asm-generic

2023-09-01 Thread Oleksii Kurochko

asm/vm_event.h is common for ARM and RISC-V so it will be moved to
asm-generic dir.

Original asm/vm_event.h from ARM was updated:
 * use SPDX-License-Identifier.
 * update comment messages of stubs.
 * update #ifdef.
 * change public/domctl.h to public/vm_event.h.

Signed-off-by: Oleksii Kurochko 
Acked-by: Stefano Stabellini 
---
Changes in V4:
 - update path of vm_event.h from include/asm-generic/asm to include/asm-generic
---
Changes in V3:
 - add Acked-by: Stefano Stabellini  for "xen: move 
arm/include/asm/vm_event.h to asm-generic"
 - update SPDX tag.
 - move asm/vm_event.h to asm-generic.
---
Changes in V2:
 - change public/domctl.h to public/vm_event.h.
 - update commit message of [PATCH v2 2/2] xen: move arm/include/asm/vm_event.h 
to stubs
---
 xen/include/asm-generic/vm_event.h | 55 ++
 1 file changed, 55 insertions(+)
 create mode 100644 xen/include/asm-generic/vm_event.h

diff --git a/xen/include/asm-generic/vm_event.h 
b/xen/include/asm-generic/vm_event.h
new file mode 100644
index 00..620c7b971c
--- /dev/null
+++ b/xen/include/asm-generic/vm_event.h
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier:  GPL-2.0-only */
+/*
+ * vm_event.h: stubs for architecture specific vm_event handling routines
+ *
+ * Copyright (c) 2015 Tamas K Lengyel (ta...@tklengyel.com)
+ */
+
+#ifndef __ASM_GENERIC_VM_EVENT_H__
+#define __ASM_GENERIC_VM_EVENT_H__
+
+#include 
+#include 
+
+static inline int vm_event_init_domain(struct domain *d)
+{
+/* Nothing to do. */
+return 0;
+}
+
+static inline void vm_event_cleanup_domain(struct domain *d)
+{
+memset(>monitor, 0, sizeof(d->monitor));
+}
+
+static inline void vm_event_toggle_singlestep(struct domain *d, struct vcpu *v,
+  vm_event_response_t *rsp)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_register_write_resume(struct vcpu *v, vm_event_response_t *rsp)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_emulate_check(struct vcpu *v, vm_event_response_t *rsp)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_sync_event(struct vcpu *v, bool value)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_reset_vmtrace(struct vcpu *v)
+{
+/* Nothing to do. */
+}
+
+#endif /* __ASM_GENERIC_VM_EVENT_H__ */
-- 
2.41.0

[PATCH v4 1/2] xen: asm-generic support

2023-09-01 Thread Oleksii Kurochko

Some headers are shared between individual architectures or are empty.
To avoid duplication of these headers, asm-generic is introduced.

With the following patch, an architecture uses generic headers
mentioned in the file arch/$(ARCH)/include/asm/Kbuild.

To use a generic header is needed to add to
arch/$(ARCH)/include/asm/Kbuild :
generic-y += 

For each mentioned header in arch/$(ARCH)/include/asm/Kbuild,
kbuild will generate the necessary wrapper in
arch/$(ARCH)/include/generated/asm.

Signed-off-by: Oleksii Kurochko 
---
Changes in V4:
 - introduce asm-generic support
 - update commit message
---
Changes in V3:
 - Rename stubs dir to asm-generic
---
Changes in V2:
 - Nothing changed.
---
 xen/Makefile  | 10 +-
 xen/arch/arm/include/asm/Kbuild   |  1 +
 xen/arch/ppc/include/asm/Kbuild   |  1 +
 xen/arch/riscv/include/asm/Kbuild |  1 +
 xen/arch/x86/include/asm/Kbuild   |  1 +
 xen/scripts/Makefile.asm-generic  | 23 +++
 6 files changed, 36 insertions(+), 1 deletion(-)
 create mode 100644 xen/arch/arm/include/asm/Kbuild
 create mode 100644 xen/arch/ppc/include/asm/Kbuild
 create mode 100644 xen/arch/riscv/include/asm/Kbuild
 create mode 100644 xen/arch/x86/include/asm/Kbuild
 create mode 100644 xen/scripts/Makefile.asm-generic

diff --git a/xen/Makefile b/xen/Makefile
index f57e5a596c..698d6ddeb8 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -438,6 +438,7 @@ ifdef building_out_of_srctree
 endif
 CFLAGS += -I$(srctree)/include
 CFLAGS += -I$(srctree)/arch/$(SRCARCH)/include
+CFLAGS += -I$(srctree)/arch/$(SRCARCH)/include/generated
 
 # Note that link order matters!
 ALL_OBJS-y:= common/built_in.o
@@ -580,6 +581,7 @@ _clean:
rm -f $(TARGET).efi $(TARGET).efi.map $(TARGET).efi.elf 
$(TARGET).efi.stripped
rm -f asm-offsets.s arch/*/include/asm/asm-offsets.h
rm -f .banner .allconfig.tmp include/xen/compile.h
+   rm -rf arch/*/include/generated
 
 .PHONY: _distclean
 _distclean: clean
@@ -589,7 +591,7 @@ $(TARGET).gz: $(TARGET)
gzip -n -f -9 < $< > $@.new
mv $@.new $@
 
-$(TARGET): outputmakefile FORCE
+$(TARGET): outputmakefile asm-generic FORCE
$(Q)$(MAKE) $(build)=tools
$(Q)$(MAKE) $(build)=. include/xen/compile.h
$(Q)$(MAKE) $(build)=include all
@@ -667,6 +669,12 @@ endif # need-sub-make
 PHONY += FORCE
 FORCE:
 
+# Support for using generic headers in asm-generic
+PHONY += asm-generic
+asm-generic:
+   $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
+   obj=arch/$(SRCARCH)/include/generated/asm
+
 # Declare the contents of the PHONY variable as phony.  We keep that
 # information in a variable so we can use it in if_changed and friends.
 .PHONY: $(PHONY)
diff --git a/xen/arch/arm/include/asm/Kbuild b/xen/arch/arm/include/asm/Kbuild
new file mode 100644
index 00..a4e40e534e
--- /dev/null
+++ b/xen/arch/arm/include/asm/Kbuild
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only
diff --git a/xen/arch/ppc/include/asm/Kbuild b/xen/arch/ppc/include/asm/Kbuild
new file mode 100644
index 00..a4e40e534e
--- /dev/null
+++ b/xen/arch/ppc/include/asm/Kbuild
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only
diff --git a/xen/arch/riscv/include/asm/Kbuild 
b/xen/arch/riscv/include/asm/Kbuild
new file mode 100644
index 00..a4e40e534e
--- /dev/null
+++ b/xen/arch/riscv/include/asm/Kbuild
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only
diff --git a/xen/arch/x86/include/asm/Kbuild b/xen/arch/x86/include/asm/Kbuild
new file mode 100644
index 00..a4e40e534e
--- /dev/null
+++ b/xen/arch/x86/include/asm/Kbuild
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0-only
diff --git a/xen/scripts/Makefile.asm-generic b/xen/scripts/Makefile.asm-generic
new file mode 100644
index 00..0aac3f50b8
--- /dev/null
+++ b/xen/scripts/Makefile.asm-generic
@@ -0,0 +1,23 @@
+# SPDX-License-Identifier: GPL-2.0
+# include/asm-generic contains a lot of files that are used
+# verbatim by several architectures.
+#
+# This Makefile reads the file arch/$(SRCARCH)/include/asm/Kbuild
+# and for each file listed in this file with generic-y creates
+# a small wrapper file in $(obj) (arch/$(SRCARCH)/include/generated/asm)
+
+kbuild-file := $(srctree)/arch/$(SRCARCH)/include/asm/Kbuild
+include $(kbuild-file)
+
+include scripts/Kbuild.include
+
+# Create output directory if not already present
+_dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj))
+
+quiet_cmd_wrap = WRAP$@
+cmd_wrap = echo "\#include " >$@
+
+all: $(patsubst %, $(obj)/%, $(generic-y))
+
+$(obj)/%.h:
+   $(call cmd,wrap)
-- 
2.41.0

Re: [PATCH v4 2/2] xen: move arm/include/asm/vm_event.h to asm-generic

2023-09-01 Thread Oleksii Kurochko

The change which adds generic-y += vm_event.h to ARM's Kbuild was lost
during creation of the patch. Should be added in the next patch version

On Fri, Sep 1, 2023, 18:02 Oleksii Kurochko 
wrote:

> asm/vm_event.h is common for ARM and RISC-V so it will be moved to
> asm-generic dir.
>
> Original asm/vm_event.h from ARM was updated:
>  * use SPDX-License-Identifier.
>  * update comment messages of stubs.
>  * update #ifdef.
>  * change public/domctl.h to public/vm_event.h.
>
> Signed-off-by: Oleksii Kurochko 
> Acked-by: Stefano Stabellini 
> ---
> Changes in V4:
>  - update path of vm_event.h from include/asm-generic/asm to
> include/asm-generic
> ---
> Changes in V3:
>  - add Acked-by: Stefano Stabellini  for "xen:
> move arm/include/asm/vm_event.h to asm-generic"
>  - update SPDX tag.
>  - move asm/vm_event.h to asm-generic.
> ---
> Changes in V2:
>  - change public/domctl.h to public/vm_event.h.
>  - update commit message of [PATCH v2 2/2] xen: move
> arm/include/asm/vm_event.h to stubs
> ---
>  xen/include/asm-generic/vm_event.h | 55 ++
>  1 file changed, 55 insertions(+)
>  create mode 100644 xen/include/asm-generic/vm_event.h
>
> diff --git a/xen/include/asm-generic/vm_event.h
> b/xen/include/asm-generic/vm_event.h
> new file mode 100644
> index 00..620c7b971c
> --- /dev/null
> +++ b/xen/include/asm-generic/vm_event.h
> @@ -0,0 +1,55 @@
> +/* SPDX-License-Identifier:  GPL-2.0-only */
> +/*
> + * vm_event.h: stubs for architecture specific vm_event handling routines
> + *
> + * Copyright (c) 2015 Tamas K Lengyel (ta...@tklengyel.com)
> + */
> +
> +#ifndef __ASM_GENERIC_VM_EVENT_H__
> +#define __ASM_GENERIC_VM_EVENT_H__
> +
> +#include 
> +#include 
> +
> +static inline int vm_event_init_domain(struct domain *d)
> +{
> +/* Nothing to do. */
> +return 0;
> +}
> +
> +static inline void vm_event_cleanup_domain(struct domain *d)
> +{
> +memset(>monitor, 0, sizeof(d->monitor));
> +}
> +
> +static inline void vm_event_toggle_singlestep(struct domain *d, struct
> vcpu *v,
> +  vm_event_response_t *rsp)
> +{
> +/* Nothing to do. */
> +}
> +
> +static inline
> +void vm_event_register_write_resume(struct vcpu *v, vm_event_response_t
> *rsp)
> +{
> +/* Nothing to do. */
> +}
> +
> +static inline
> +void vm_event_emulate_check(struct vcpu *v, vm_event_response_t *rsp)
> +{
> +/* Nothing to do. */
> +}
> +
> +static inline
> +void vm_event_sync_event(struct vcpu *v, bool value)
> +{
> +/* Nothing to do. */
> +}
> +
> +static inline
> +void vm_event_reset_vmtrace(struct vcpu *v)
> +{
> +/* Nothing to do. */
> +}
> +
> +#endif /* __ASM_GENERIC_VM_EVENT_H__ */
> --
> 2.41.0
>
>

[PATCH v7 1/2] xen: asm-generic support

2023-09-07 Thread Oleksii Kurochko

Some headers are shared between individual architectures or are empty.
To avoid duplication of these headers, asm-generic is introduced.

With the following patch, an architecture uses generic headers
mentioned in the file arch/$(ARCH)/include/asm/Makefile

To use a generic header is needed to add to
arch/$(ARCH)/include/asm/Makefile :
generic-y += 

For each mentioned header in arch/$(ARCH)/include/asm/Makefile,
the necessary wrapper in arch/$(ARCH)/include/generated/asm will be
generated.

As the base Makefile.asm-generic from Linux kernel was taken.
( 06c2afb862f9da8 "Linux 6.5-rc1" ).

Signed-off-by: Oleksii Kurochko 
Reviewed-by: Anthony PERARD 
Acked-by: Jan Beulich 
---
Changes in V7:
 - update warning message in Makefile.asm-generic
 - add Reviewed-by: Anthony PERARD 
 - add Acked-by: Jan Beulich 
---
Changes in V6:
 - introduce $(asm-generic) macro in Kbuild.include.
 - move "asm-generic" after the rule "__distclean".
---
Changes in V5:
 - Update the commit message
 - Update SPDX license in Makefile.
 - Remove code related to UML
 - Include $(src)/Makefile instead of $(kbuild-file) 
 - Update comment message in Makefile.asm-generic
 - Update .gitignore
 - Update path to generated headers in CFLAGS.
 - Use the latest version of Linux's Makefile.asm-generic
---
Changes in V4:
 - introduce asm-generic support
 - update commit message
---
Changes in V3:
 - Rename stubs dir to asm-generic
---
Changes in V2:
 - Nothing changed.
---
 .gitignore   |  1 +
 xen/Makefile |  9 +-
 xen/scripts/Kbuild.include   |  6 
 xen/scripts/Makefile.asm-generic | 53 
 4 files changed, 68 insertions(+), 1 deletion(-)
 create mode 100644 xen/scripts/Makefile.asm-generic

diff --git a/.gitignore b/.gitignore
index 50273adb8d..287166f8fc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -267,6 +267,7 @@ xen/arch/*/efi/efi.h
 xen/arch/*/efi/pe.c
 xen/arch/*/efi/runtime.c
 xen/arch/*/include/asm/asm-offsets.h
+xen/arch/*/include/generated
 xen/build-dir-cppcheck/
 xen/common/config_data.S
 xen/common/config.gz
diff --git a/xen/Makefile b/xen/Makefile
index f57e5a596c..2dc5e3526d 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -438,6 +438,7 @@ ifdef building_out_of_srctree
 endif
 CFLAGS += -I$(srctree)/include
 CFLAGS += -I$(srctree)/arch/$(SRCARCH)/include
+CFLAGS += -I$(objtree)/arch/$(SRCARCH)/include/generated
 
 # Note that link order matters!
 ALL_OBJS-y:= common/built_in.o
@@ -580,16 +581,22 @@ _clean:
rm -f $(TARGET).efi $(TARGET).efi.map $(TARGET).efi.elf 
$(TARGET).efi.stripped
rm -f asm-offsets.s arch/*/include/asm/asm-offsets.h
rm -f .banner .allconfig.tmp include/xen/compile.h
+   rm -rf $(objtree)/arch/*/include/generated
 
 .PHONY: _distclean
 _distclean: clean
rm -f tags TAGS cscope.files cscope.in.out cscope.out cscope.po.out 
GTAGS GPATH GRTAGS GSYMS .config source
 
+# Support for using generic headers in asm-generic
+PHONY += asm-generic
+asm-generic:
+   $(Q)$(MAKE) $(asm-generic)=arch/$(SRCARCH)/include/generated/asm
+
 $(TARGET).gz: $(TARGET)
gzip -n -f -9 < $< > $@.new
mv $@.new $@
 
-$(TARGET): outputmakefile FORCE
+$(TARGET): outputmakefile asm-generic FORCE
$(Q)$(MAKE) $(build)=tools
$(Q)$(MAKE) $(build)=. include/xen/compile.h
$(Q)$(MAKE) $(build)=include all
diff --git a/xen/scripts/Kbuild.include b/xen/scripts/Kbuild.include
index 785a32c32e..c2bd8498e1 100644
--- a/xen/scripts/Kbuild.include
+++ b/xen/scripts/Kbuild.include
@@ -91,6 +91,12 @@ cc-ifversion = $(shell [ $(CONFIG_GCC_VERSION)0 $(1) $(2)000 
] && echo $(3) || e
 
 clang-ifversion = $(shell [ $(CONFIG_CLANG_VERSION)0 $(1) $(2)000 ] && echo 
$(3) || echo $(4))
 
+###
+# Shorthand for $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic obj
+# Usage:
+# $(Q)$(MAKE) $(asm-generic)=dir
+asm-generic := -f $(srctree)/scripts/Makefile.asm-generic obj
+
 ###
 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj=
 # Usage:
diff --git a/xen/scripts/Makefile.asm-generic b/xen/scripts/Makefile.asm-generic
new file mode 100644
index 00..b0d356bfa3
--- /dev/null
+++ b/xen/scripts/Makefile.asm-generic
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: GPL-2.0-only
+# include/asm-generic contains a lot of files that are used
+# verbatim by several architectures.
+#
+# This Makefile reads the file arch/$(SRCARCH)/include/asm/Makefile
+# and for each file listed in this file with generic-y creates
+# a small wrapper file in arch/$(SRCARCH)/include/generated/asm.
+
+PHONY := all
+all:
+
+src := $(subst /generated,,$(obj))
+
+include $(srctree)/scripts/Kbuild.include
+-include $(src)/Makefile
+
+redundant := $(filter $(mandatory-y) $(generated-y), $(generic-y))
+redundant += $(foreach f, $(generic-y), $(if $(wildcard 
$(srctree)/$(src)/$(f)),$(f)))
+redundant := $(sort $(redundant))
+$(if $(redundant),\
+

[PATCH v7 2/2] xen: move arm/include/asm/vm_event.h to asm-generic

2023-09-07 Thread Oleksii Kurochko

asm/vm_event.h is common for ARM and RISC-V so it will be moved to
asm-generic dir.

Original asm/vm_event.h from ARM was updated:
 * use SPDX-License-Identifier.
 * update comment messages of stubs.
 * update #ifdef
 * instead of "include " -> "public/vm_event.h"

As vm_event.h was moved to asm-generic then it is needed to create
Makefile in arm/include/asm/ and add generated-y += vm_event.h to
it.

Signed-off-by: Oleksii Kurochko 
Acked-by: Tamas K Lengyel 
---
Changes in V7:
 - update guards in asm-generic/vm_event.h.
 - add Acked-by: Tamas K Lengyel 
---
Changes in V6:
 - update the commit message.
---
Changes in V5:
 - Update the commit message
 - Remove Acked-by:...
 - Switch ARM to use asm-generic/vm_event.h
---
Changes in V4:
 - update path of vm_event.h from include/asm-generic/asm to include/asm-generic
---
Changes in V3:
 - add Acked-by: Stefano Stabellini  for "xen: move 
arm/include/asm/vm_event.h to asm-generic"
 - update SPDX tag.
 - move asm/vm_event.h to asm-generic.
---
Changes in V2:
 - change public/domctl.h to public/vm_event.h.
 - update commit message of [PATCH v2 2/2] xen: move arm/include/asm/vm_event.h 
to stubs
---
 xen/arch/arm/include/asm/Makefile   |  2 +
 xen/arch/arm/include/asm/vm_event.h | 66 -
 xen/include/asm-generic/vm_event.h  | 55 
 3 files changed, 57 insertions(+), 66 deletions(-)
 create mode 100644 xen/arch/arm/include/asm/Makefile
 delete mode 100644 xen/arch/arm/include/asm/vm_event.h
 create mode 100644 xen/include/asm-generic/vm_event.h

diff --git a/xen/arch/arm/include/asm/Makefile 
b/xen/arch/arm/include/asm/Makefile
new file mode 100644
index 00..821addb0bf
--- /dev/null
+++ b/xen/arch/arm/include/asm/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+generic-y += vm_event.h
diff --git a/xen/arch/arm/include/asm/vm_event.h 
b/xen/arch/arm/include/asm/vm_event.h
deleted file mode 100644
index 4d861373b3..00
--- a/xen/arch/arm/include/asm/vm_event.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * vm_event.h: architecture specific vm_event handling routines
- *
- * Copyright (c) 2015 Tamas K Lengyel (ta...@tklengyel.com)
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __ASM_ARM_VM_EVENT_H__
-#define __ASM_ARM_VM_EVENT_H__
-
-#include 
-#include 
-
-static inline int vm_event_init_domain(struct domain *d)
-{
-/* Nothing to do. */
-return 0;
-}
-
-static inline void vm_event_cleanup_domain(struct domain *d)
-{
-memset(>monitor, 0, sizeof(d->monitor));
-}
-
-static inline void vm_event_toggle_singlestep(struct domain *d, struct vcpu *v,
-  vm_event_response_t *rsp)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_register_write_resume(struct vcpu *v, vm_event_response_t *rsp)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_emulate_check(struct vcpu *v, vm_event_response_t *rsp)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_sync_event(struct vcpu *v, bool value)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_reset_vmtrace(struct vcpu *v)
-{
-/* Not supported on ARM. */
-}
-
-#endif /* __ASM_ARM_VM_EVENT_H__ */
diff --git a/xen/include/asm-generic/vm_event.h 
b/xen/include/asm-generic/vm_event.h
new file mode 100644
index 00..620c7b971c
--- /dev/null
+++ b/xen/include/asm-generic/vm_event.h
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier:  GPL-2.0-only */
+/*
+ * vm_event.h: stubs for architecture specific vm_event handling routines
+ *
+ * Copyright (c) 2015 Tamas K Lengyel (ta...@tklengyel.com)
+ */
+
+#ifndef __ASM_GENERIC_VM_EVENT_H__
+#define __ASM_GENERIC_VM_EVENT_H__
+
+#include 
+#include 
+
+static inline int vm_event_init_domain(struct domain *d)
+{
+/* Nothing to do. */
+return 0;
+}
+
+static inline void vm_event_cleanup_domain(struct domain *d)
+{
+memset(>monitor, 0, sizeof(d->monitor));
+}
+
+static inline void vm_event_toggle_singlestep(struct domain *d, struct vcpu *v,
+  vm_event_response_t *rsp)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_register_write_resume(struct vcpu *v, vm_event_response_t *rsp)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_emulate_check(struct vcpu *v, vm_event_response_t *rsp)
+{

[PATCH v7 0/2] introduce stub directory to storing empty/stub headers

2023-09-07 Thread Oleksii Kurochko

A lot of empty/stub headers should be introduced during the early steps of 
adding
support of new architecture.

An example can be found here:
1. 
https://lore.kernel.org/xen-devel/cover.1692181079.git.oleksii.kuroc...@gmail.com/
2. 
https://lore.kernel.org/xen-devel/a92f99e8f697da99d77bfde562a549dbef3760ce.1692816595.git.sanasta...@raptorengineering.com/

As part of the patch series, asm/vm_event.h was moved to the stubs directory 
because
It is the same for ARM, PPC, and RISC-V.
---
Changes in V7:
- update warning message in Makefile.asm-generic
- add Reviewed-by: Anthony PERARD  for patch 1
- add Acked-by: Jan Beulich  for patch 1
- update header guards in asm-generic/vm_event.h.
- add Acked-by: Tamas K Lengyel  for patch 2
---
Changes in V6:
 - introduce $(asm-generic) macro in Kbuild.include.
 - move "asm-generic" after the rule "__distclean".
 - update the commit message.
---
Changes in V5:
- Update SPDX license.
- Remove code related to UML in Makefile.asm-generic.
- Include $(src)/Makefile instead of $(kbuild-file).
- Update comment message in Makefile.asm-generic.
- Update .gitignore.
- Update path to generated headers in CFLAGS.
- Use the latest version of Linux's Makefile.asm-generic.
- Introduce asm-generic's vm_event.h.
- Switch ARM to use asm-generic/vm_event.h.
---
Changes in V4:
 - add asm-generic support
 - update path of vm_event.h from include/asm-generic/asm to include/asm-generic
---
Changes in V3:
 - add Acked-by: Stefano Stabellini  for "xen: move 
arm/include/asm/vm_event.h to asm-generic"
 - update SPDX tag.
 - move asm/vm_event.h to asm-generic.
 - rename stubs dir to asm-generic.

---
Changes in V2:
 - change public/domctl.h to public/vm_event.h.
 - update commit message of [PATCH v2 2/2] xen: move arm/include/asm/vm_event.h 
to stubs

Oleksii Kurochko (2):
  xen: asm-generic support
  xen: move arm/include/asm/vm_event.h to asm-generic

 .gitignore  |  1 +
 xen/Makefile|  9 +++-
 xen/arch/arm/include/asm/Makefile   |  2 +
 xen/arch/arm/include/asm/vm_event.h | 66 -
 xen/include/asm-generic/vm_event.h  | 55 
 xen/scripts/Kbuild.include  |  6 +++
 xen/scripts/Makefile.asm-generic| 53 +++
 7 files changed, 125 insertions(+), 67 deletions(-)
 create mode 100644 xen/arch/arm/include/asm/Makefile
 delete mode 100644 xen/arch/arm/include/asm/vm_event.h
 create mode 100644 xen/include/asm-generic/vm_event.h
 create mode 100644 xen/scripts/Makefile.asm-generic

-- 
2.41.0

[PATCH v1 22/29] xen/asm-generic: introduce stub header delay.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/delay.h | 21 +
 1 file changed, 21 insertions(+)
 create mode 100644 xen/include/asm-generic/delay.h

diff --git a/xen/include/asm-generic/delay.h b/xen/include/asm-generic/delay.h
new file mode 100644
index 00..1e68c6cacb
--- /dev/null
+++ b/xen/include/asm-generic/delay.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef _ASM_GENERIC_DELAY_H
+#define _ASM_GENERIC_DELAY_H
+
+#include 
+
+static inline void udelay(unsigned long usecs)
+{
+BUG();
+}
+
+#endif /* _ASM_GENERIC_DELAY_H */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: BSD
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 26/29] xen/asm-generic: introduce stub header monitor.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/monitor.h | 64 +++
 1 file changed, 64 insertions(+)
 create mode 100644 xen/include/asm-generic/monitor.h

diff --git a/xen/include/asm-generic/monitor.h 
b/xen/include/asm-generic/monitor.h
new file mode 100644
index 00..c61fe738a8
--- /dev/null
+++ b/xen/include/asm-generic/monitor.h
@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * include/asm-GENERIC/monitor.h
+ *
+ * Arch-specific monitor_op domctl handler.
+ *
+ * Copyright (c) 2015 Tamas K Lengyel (ta...@tklengyel.com)
+ * Copyright (c) 2016, Bitdefender S.R.L.
+ *
+ */
+
+#ifndef __ASM_GENERIC_MONITOR_H__
+#define __ASM_GENERIC_MONITOR_H__
+
+#include 
+#include 
+
+static inline
+void arch_monitor_allow_userspace(struct domain *d, bool allow_userspace)
+{
+}
+
+static inline
+int arch_monitor_domctl_op(struct domain *d, struct xen_domctl_monitor_op *mop)
+{
+/* No arch-specific monitor ops on GENERIC. */
+return -EOPNOTSUPP;
+}
+
+int arch_monitor_domctl_event(struct domain *d,
+  struct xen_domctl_monitor_op *mop);
+
+static inline
+int arch_monitor_init_domain(struct domain *d)
+{
+/* No arch-specific domain initialization on GENERIC. */
+return 0;
+}
+
+static inline
+void arch_monitor_cleanup_domain(struct domain *d)
+{
+/* No arch-specific domain cleanup on GENERIC. */
+}
+
+static inline uint32_t arch_monitor_get_capabilities(struct domain *d)
+{
+uint32_t capabilities = 0;
+
+return capabilities;
+}
+
+#endif /* __ASM_GENERIC_MONITOR_H__ */
+
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: BSD
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 20/29] xen/asm-generic: introduce stub header div64.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/div64.h | 24 
 1 file changed, 24 insertions(+)
 create mode 100644 xen/include/asm-generic/div64.h

diff --git a/xen/include/asm-generic/div64.h b/xen/include/asm-generic/div64.h
new file mode 100644
index 00..9f9c20878b
--- /dev/null
+++ b/xen/include/asm-generic/div64.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_DIV64
+#define __ASM_GENERIC_DIV64
+
+#include 
+
+# define do_div(n,base) ({  \
+uint32_t __base = (base);   \
+uint32_t __rem; \
+__rem = ((uint64_t)(n)) % __base;   \
+(n) = ((uint64_t)(n)) / __base; \
+__rem;  \
+ })
+
+#endif
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 19/29] xen/asm-generic: introduce stub header hardirq.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/hardirq.h | 27 +++
 1 file changed, 27 insertions(+)
 create mode 100644 xen/include/asm-generic/hardirq.h

diff --git a/xen/include/asm-generic/hardirq.h 
b/xen/include/asm-generic/hardirq.h
new file mode 100644
index 00..b4b71a7315
--- /dev/null
+++ b/xen/include/asm-generic/hardirq.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_HARDIRQ_H
+#define __ASM_GENERIC_HARDIRQ_H
+
+#include 
+
+typedef struct {
+unsigned long __softirq_pending;
+unsigned int __local_irq_count;
+} __cacheline_aligned irq_cpustat_t;
+
+#include /* Standard mappings for irq_cpustat_t above */
+
+#define in_irq() (local_irq_count(smp_processor_id()) != 0)
+
+#define irq_enter() (local_irq_count(smp_processor_id())++)
+#define irq_exit()  (local_irq_count(smp_processor_id())--)
+
+#endif /* __ASM_GENERIC_HARDIRQ_H */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 23/29] xen/asm-generic: introduce stub header domain.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/domain.h | 53 
 1 file changed, 53 insertions(+)
 create mode 100644 xen/include/asm-generic/domain.h

diff --git a/xen/include/asm-generic/domain.h b/xen/include/asm-generic/domain.h
new file mode 100644
index 00..b2d244d121
--- /dev/null
+++ b/xen/include/asm-generic/domain.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_DOMAIN_H__
+#define __ASM_GENERIC_DOMAIN_H__
+
+#include 
+#include 
+
+struct hvm_domain
+{
+uint64_t  params[HVM_NR_PARAMS];
+};
+
+#define is_domain_direct_mapped(d) ((void)(d), 0)
+
+struct arch_vcpu_io {
+};
+
+struct arch_vcpu {
+};
+
+struct arch_domain {
+struct hvm_domain hvm;
+};
+
+#include 
+
+static inline struct vcpu_guest_context *alloc_vcpu_guest_context(void)
+{
+return xmalloc(struct vcpu_guest_context);
+}
+
+static inline void free_vcpu_guest_context(struct vcpu_guest_context *vgc)
+{
+xfree(vgc);
+}
+
+struct guest_memory_policy {};
+static inline void update_guest_memory_policy(struct vcpu *v,
+  struct guest_memory_policy *gmp)
+{}
+
+static inline void arch_vcpu_block(struct vcpu *v) {}
+
+#endif /* __ASM_GENERIC_DOMAIN_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: BSD
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 07/29] xen/asm-generic: introduce stub header guest_atomics.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces stub header needed for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/guest_atomics.h | 47 +
 1 file changed, 47 insertions(+)
 create mode 100644 xen/include/asm-generic/guest_atomics.h

diff --git a/xen/include/asm-generic/guest_atomics.h 
b/xen/include/asm-generic/guest_atomics.h
new file mode 100644
index 00..6c4e79350a
--- /dev/null
+++ b/xen/include/asm-generic/guest_atomics.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_GUEST_ATOMICS_H
+#define __ASM_GENERIC_GUEST_ATOMICS_H
+
+#define guest_testop(name)  \
+static inline int guest_##name(struct domain *d, int nr, volatile void *p)  \
+{   \
+(void) d;   \
+(void) nr;  \
+(void) p;   \
+\
+return 0;   \
+}
+
+#define guest_bitop(name)   \
+static inline void guest_##name(struct domain *d, int nr, volatile void *p) \
+{   \
+(void) d;   \
+(void) nr;  \
+(void) p;   \
+}
+
+guest_bitop(set_bit)
+guest_bitop(clear_bit)
+guest_bitop(change_bit)
+
+#undef guest_bitop
+
+guest_testop(test_and_set_bit)
+guest_testop(test_and_clear_bit)
+guest_testop(test_and_change_bit)
+
+#undef guest_testop
+
+
+#define guest_test_bit(d, nr, p) ((void)(d), test_bit(nr, p))
+
+#endif /* __ASM_GENERIC_GUEST_ATOMICS_H */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 11/29] xen/asm-generic: introduce stub header mem_access.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/mem_access.h | 14 ++
 1 file changed, 14 insertions(+)
 create mode 100644 xen/include/asm-generic/mem_access.h

diff --git a/xen/include/asm-generic/mem_access.h 
b/xen/include/asm-generic/mem_access.h
new file mode 100644
index 00..d2a0b545a4
--- /dev/null
+++ b/xen/include/asm-generic/mem_access.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_MEM_ACCESS
+#define __ASM_GENERIC_MEM_ACCESS
+
+#endif
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 10/29] xen/asm-generic: introduce stub header iommu.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces stub header necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/iommu.h | 17 +
 1 file changed, 17 insertions(+)
 create mode 100644 xen/include/asm-generic/iommu.h

diff --git a/xen/include/asm-generic/iommu.h b/xen/include/asm-generic/iommu.h
new file mode 100644
index 00..b08550e6b3
--- /dev/null
+++ b/xen/include/asm-generic/iommu.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_IOMMU_H__
+#define __ASM_GENERIC_IOMMU_H__
+
+struct arch_iommu {
+};
+
+#endif /* __ASM_IOMMU_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 09/29] xen/asm-generic: introduce stub header iocap.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/iocap.h | 17 +
 1 file changed, 17 insertions(+)
 create mode 100644 xen/include/asm-generic/iocap.h

diff --git a/xen/include/asm-generic/iocap.h b/xen/include/asm-generic/iocap.h
new file mode 100644
index 00..dd7cb45488
--- /dev/null
+++ b/xen/include/asm-generic/iocap.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_IOCAP_H__
+#define __ASM_GENERIC_IOCAP_H__
+
+#define cache_flush_permitted(d)\
+(!rangeset_is_empty((d)->iomem_caps))
+
+#endif /* __ASM_GENERIC_IOCAP_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 15/29] xen/asm-generic: introduce stub header xenoprof.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/xenoprof.h | 14 ++
 1 file changed, 14 insertions(+)
 create mode 100644 xen/include/asm-generic/xenoprof.h

diff --git a/xen/include/asm-generic/xenoprof.h 
b/xen/include/asm-generic/xenoprof.h
new file mode 100644
index 00..8ee3408b77
--- /dev/null
+++ b/xen/include/asm-generic/xenoprof.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_XENOPROF_H__
+#define __ASM_GENERIC_XENOPROF_H__
+
+#endif /* __ASM_GENERIC_XENOPROF_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: BSD
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 12/29] xen/asm-generic: introduce stub header pci.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/pci.h | 18 ++
 1 file changed, 18 insertions(+)
 create mode 100644 xen/include/asm-generic/pci.h

diff --git a/xen/include/asm-generic/pci.h b/xen/include/asm-generic/pci.h
new file mode 100644
index 00..b577ee105f
--- /dev/null
+++ b/xen/include/asm-generic/pci.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_PCI_H__
+#define __ASM_GENERIC_PCI_H__
+
+struct arch_pci_dev {
+};
+
+#endif /* __ASM_GENERIC_PCI_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: BSD
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
+
-- 
2.41.0

[PATCH v1 13/29] xen/asm-generic: introduce stub header random.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/random.h | 20 
 1 file changed, 20 insertions(+)
 create mode 100644 xen/include/asm-generic/random.h

diff --git a/xen/include/asm-generic/random.h b/xen/include/asm-generic/random.h
new file mode 100644
index 00..cd2307e70b
--- /dev/null
+++ b/xen/include/asm-generic/random.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_RANDOM_H__
+#define __ASM_GENERIC_RANDOM_H__
+
+static inline unsigned int arch_get_random(void)
+{
+return 0;
+}
+
+#endif /* __ASM_GENERIC_RANDOM_H__ */
+
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: BSD
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 21/29] xen/asm-generic: introduce stub header altp2m.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/altp2m.h | 34 
 1 file changed, 34 insertions(+)
 create mode 100644 xen/include/asm-generic/altp2m.h

diff --git a/xen/include/asm-generic/altp2m.h b/xen/include/asm-generic/altp2m.h
new file mode 100644
index 00..e73cc8a04f
--- /dev/null
+++ b/xen/include/asm-generic/altp2m.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_ALTP2M_H
+#define __ASM_GENERIC_ALTP2M_H
+
+#include 
+
+struct domain;
+struct vcpu;
+
+/* Alternate p2m on/off per domain */
+static inline bool altp2m_active(const struct domain *d)
+{
+/* Not implemented on GENERIC. */
+return false;
+}
+
+/* Alternate p2m VCPU */
+static inline uint16_t altp2m_vcpu_idx(const struct vcpu *v)
+{
+/* Not implemented on GENERIC, should not be reached. */
+BUG();
+return 0;
+}
+
+#endif /* __ASM_GENERIC_ALTP2M_H */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: BSD
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 14/29] xen/asm-generic: introduce stub header setup.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/setup.h | 16 
 1 file changed, 16 insertions(+)
 create mode 100644 xen/include/asm-generic/setup.h

diff --git a/xen/include/asm-generic/setup.h b/xen/include/asm-generic/setup.h
new file mode 100644
index 00..37feac222f
--- /dev/null
+++ b/xen/include/asm-generic/setup.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_SETUP_H__
+#define __ASM_GENERIC_SETUP_H__
+
+#define max_init_domid (0)
+
+#endif /* __ASM_GENERIC_SETUP_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: BSD
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 18/29] xen/asm-generic: introduce stub header smp.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/smp.h | 30 ++
 1 file changed, 30 insertions(+)
 create mode 100644 xen/include/asm-generic/smp.h

diff --git a/xen/include/asm-generic/smp.h b/xen/include/asm-generic/smp.h
new file mode 100644
index 00..5d6b7185f1
--- /dev/null
+++ b/xen/include/asm-generic/smp.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_SMP_H
+#define __ASM_GENERIC_SMP_H
+
+#ifndef __ASSEMBLY__
+#include 
+#include 
+#endif
+
+DECLARE_PER_CPU(cpumask_var_t, cpu_sibling_mask);
+DECLARE_PER_CPU(cpumask_var_t, cpu_core_mask);
+
+#define cpu_is_offline(cpu) unlikely(!cpu_online(cpu))
+
+/*
+ * Do we, for platform reasons, need to actually keep CPUs online when we
+ * would otherwise prefer them to be off?
+ */
+#define park_offline_cpus false
+
+#endif
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: BSD
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 17/29] xen/asm-generic: introduce stub header percpu.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/percpu.h | 35 
 1 file changed, 35 insertions(+)
 create mode 100644 xen/include/asm-generic/percpu.h

diff --git a/xen/include/asm-generic/percpu.h b/xen/include/asm-generic/percpu.h
new file mode 100644
index 00..d1069adb61
--- /dev/null
+++ b/xen/include/asm-generic/percpu.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_PERCPU_H__
+#define __ASM_GENERIC_PERCPU_H__
+
+#ifndef __ASSEMBLY__
+
+#include 
+
+extern char __per_cpu_start[], __per_cpu_data_end[];
+extern unsigned long __per_cpu_offset[NR_CPUS];
+void percpu_init_areas(void);
+
+#define per_cpu(var, cpu)  \
+(*RELOC_HIDE(_cpu__##var, __per_cpu_offset[cpu]))
+
+#define this_cpu(var) \
+(*RELOC_HIDE(_cpu__##var, __per_cpu_offset[get_processor_id()]))
+
+#define per_cpu_ptr(var, cpu)  \
+(*RELOC_HIDE(var, __per_cpu_offset[cpu]))
+#define this_cpu_ptr(var) \
+(*RELOC_HIDE(var, get_processor_id()))
+
+#endif
+
+#endif /* __ASM_GENERIC_PERCPU_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 28/29] xen/asm-generic: introduce stub header p2m.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/p2m.h | 115 ++
 1 file changed, 115 insertions(+)
 create mode 100644 xen/include/asm-generic/p2m.h

diff --git a/xen/include/asm-generic/p2m.h b/xen/include/asm-generic/p2m.h
new file mode 100644
index 00..554fd46608
--- /dev/null
+++ b/xen/include/asm-generic/p2m.h
@@ -0,0 +1,115 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_P2M_H__
+#define __ASM_GENERIC_P2M_H__
+
+#include 
+
+#define paddr_bits PADDR_BITS
+
+/*
+ * List of possible type for each page in the p2m entry.
+ * The number of available bit per page in the pte for this purpose is 4 bits.
+ * So it's possible to only have 16 fields. If we run out of value in the
+ * future, it's possible to use higher value for pseudo-type and don't store
+ * them in the p2m entry.
+ */
+typedef enum {
+p2m_invalid = 0,/* Nothing mapped here */
+p2m_ram_rw, /* Normal read/write guest RAM */
+p2m_ram_ro, /* Read-only; writes are silently dropped */
+p2m_mmio_direct_dev,/* Read/write mapping of genuine Device MMIO area */
+p2m_mmio_direct_nc, /* Read/write mapping of genuine MMIO area 
non-cacheable */
+p2m_mmio_direct_c,  /* Read/write mapping of genuine MMIO area cacheable */
+p2m_map_foreign_rw, /* Read/write RAM pages from foreign domain */
+p2m_map_foreign_ro, /* Read-only RAM pages from foreign domain */
+p2m_grant_map_rw,   /* Read/write grant mapping */
+p2m_grant_map_ro,   /* Read-only grant mapping */
+/* The types below are only used to decide the page attribute in the P2M */
+p2m_iommu_map_rw,   /* Read/write iommu mapping */
+p2m_iommu_map_ro,   /* Read-only iommu mapping */
+p2m_max_real_type,  /* Types after this won't be store in the p2m */
+} p2m_type_t;
+
+#include 
+
+static inline int get_page_and_type(struct page_info *page,
+struct domain *domain,
+unsigned long type)
+{
+BUG();
+return 1;
+}
+
+/* Look up a GFN and take a reference count on the backing page. */
+typedef unsigned int p2m_query_t;
+#define P2M_ALLOC(1u<<0)   /* Populate PoD and paged-out entries */
+#define P2M_UNSHARE  (1u<<1)   /* Break CoW sharing */
+
+static inline struct page_info *get_page_from_gfn(
+struct domain *d, unsigned long gfn, p2m_type_t *t, p2m_query_t q)
+{
+BUG();
+return NULL;
+}
+
+static inline void memory_type_changed(struct domain *d)
+{
+BUG();
+}
+
+
+static inline int guest_physmap_mark_populate_on_demand(struct domain *d, 
unsigned long gfn,
+unsigned int order)
+{
+BUG();
+return 1;
+}
+
+static inline int guest_physmap_add_entry(struct domain *d,
+gfn_t gfn,
+mfn_t mfn,
+unsigned long page_order,
+p2m_type_t t)
+{
+BUG();
+return 1;
+}
+
+/* Untyped version for RAM only, for compatibility */
+static inline int __must_check
+guest_physmap_add_page(struct domain *d, gfn_t gfn, mfn_t mfn,
+   unsigned int page_order)
+{
+return guest_physmap_add_entry(d, gfn, mfn, page_order, p2m_ram_rw);
+}
+
+static inline mfn_t gfn_to_mfn(struct domain *d, gfn_t gfn)
+{
+BUG();
+return _mfn(0);
+}
+
+static inline bool arch_acquire_resource_check(struct domain *d)
+{
+/*
+ * The reference counting of foreign entries in set_foreign_p2m_entry()
+ * is supported on GENERIC.
+ */
+return true;
+}
+
+static inline void p2m_altp2m_check(struct vcpu *v, uint16_t idx)
+{
+/* Not supported on GENERIC. */
+}
+
+#endif /* __ASM_GENERIC_P2M_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: BSD
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 24/29] xen/asm-generic: introduce stub header guest_access.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/guest_access.h | 31 ++
 1 file changed, 31 insertions(+)
 create mode 100644 xen/include/asm-generic/guest_access.h

diff --git a/xen/include/asm-generic/guest_access.h 
b/xen/include/asm-generic/guest_access.h
new file mode 100644
index 00..b865d37f4e
--- /dev/null
+++ b/xen/include/asm-generic/guest_access.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_GUEST_ACCESS_H__
+#define __ASM_GENERIC_GUEST_ACCESS_H__
+
+#include 
+
+unsigned long raw_copy_to_guest(void *to, const void *from, unsigned len);
+unsigned long raw_copy_from_guest(void *to, const void *from, unsigned len);
+
+#define __raw_copy_to_guest raw_copy_to_guest
+#define __raw_copy_from_guest raw_copy_from_guest
+
+#define guest_handle_okay(hnd, nr) (1)
+#define guest_handle_subrange_okay(hnd, first, last) (1)
+
+struct domain;
+unsigned long copy_to_guest_phys(struct domain *d,
+ paddr_t gpa,
+ void *buf,
+ unsigned int len);
+
+#endif /* __ASM_GENERIC_GUEST_ACCESS_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 29/29] xen/asm-generic: introduce stub header softirq.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/softirq.h | 17 +
 1 file changed, 17 insertions(+)
 create mode 100644 xen/include/asm-generic/softirq.h

diff --git a/xen/include/asm-generic/softirq.h 
b/xen/include/asm-generic/softirq.h
new file mode 100644
index 00..83be855e50
--- /dev/null
+++ b/xen/include/asm-generic/softirq.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_SOFTIRQ_H__
+#define __ASM_GENERIC_SOFTIRQ_H__
+
+#define NR_ARCH_SOFTIRQS   0
+
+#define arch_skip_send_event_check(cpu) 0
+
+#endif /* __ASM_GENERIC_SOFTIRQ_H__ */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 27/29] xen/asm-generic: introduce stub header numa.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/numa.h | 35 ++
 1 file changed, 35 insertions(+)
 create mode 100644 xen/include/asm-generic/numa.h

diff --git a/xen/include/asm-generic/numa.h b/xen/include/asm-generic/numa.h
new file mode 100644
index 00..028f7b3638
--- /dev/null
+++ b/xen/include/asm-generic/numa.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ARCH_GENERIC_NUMA_H
+#define __ARCH_GENERIC_NUMA_H
+
+#include 
+
+typedef u8 nodeid_t;
+
+/* Fake one node for now. See also node_online_map. */
+#define cpu_to_node(cpu) 0
+#define node_to_cpumask(node)   (cpu_online_map)
+
+extern mfn_t first_valid_mfn;
+
+#define node_spanned_pages(nid) (max_page - mfn_x(first_valid_mfn))
+#define node_start_pfn(nid) (mfn_x(first_valid_mfn))
+#define __node_distance(a, b) (20)
+
+static inline unsigned int arch_get_dma_bitsize(void)
+{
+return 32;
+}
+
+#define arch_want_default_dmazone() (false)
+
+#endif /* __ARCH_GENERIC_NUMA_H */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 05/29] xen/asm-generic: introduce stub header event.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces stub header needed for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/event.h | 39 +
 1 file changed, 39 insertions(+)
 create mode 100644 xen/include/asm-generic/event.h

diff --git a/xen/include/asm-generic/event.h b/xen/include/asm-generic/event.h
new file mode 100644
index 00..d25ba36aad
--- /dev/null
+++ b/xen/include/asm-generic/event.h
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_EVENT_H__
+#define __ASM_GENERIC_EVENT_H__
+
+#include 
+
+static inline void vcpu_mark_events_pending(struct vcpu *v)
+{
+}
+
+static inline int vcpu_event_delivery_is_enabled(struct vcpu *v)
+{
+return 0;
+}
+
+static inline int local_events_need_delivery(void)
+{
+return 0;
+}
+
+static inline void local_event_delivery_enable(void)
+{
+}
+
+static inline bool arch_virq_is_global(unsigned int virq)
+{
+return true;
+}
+
+#endif /* __ASM_GENERIC_EVENT_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 04/29] xen/asm-generic: introduce stub header device.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces stub header needed for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/device.h | 65 
 1 file changed, 65 insertions(+)
 create mode 100644 xen/include/asm-generic/device.h

diff --git a/xen/include/asm-generic/device.h b/xen/include/asm-generic/device.h
new file mode 100644
index 00..66e69ecd78
--- /dev/null
+++ b/xen/include/asm-generic/device.h
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_DEVICE_H__
+#define __ASM_GENERIC_DEVICE_H__
+
+struct dt_device_node;
+
+enum device_type
+{
+DEV_DT,
+DEV_PCI,
+};
+
+struct device {
+enum device_type type;
+#ifdef CONFIG_HAS_DEVICE_TREE
+struct dt_device_node *of_node; /* Used by drivers imported from Linux */
+#endif
+};
+
+enum device_class
+{
+DEVICE_SERIAL,
+DEVICE_IOMMU,
+DEVICE_GIC,
+DEVICE_PCI_HOSTBRIDGE,
+/* Use for error */
+DEVICE_UNKNOWN,
+};
+
+struct device_desc {
+/* Device name */
+const char *name;
+/* Device class */
+enum device_class class;
+/* List of devices supported by this driver */
+const struct dt_device_match *dt_match;
+/*
+ * Device initialization.
+ *
+ * -EAGAIN is used to indicate that device probing is deferred.
+ */
+int (*init)(struct dt_device_node *dev, const void *data);
+};
+
+typedef struct device device_t;
+
+#define DT_DEVICE_START(_name, _namestr, _class)\
+static const struct device_desc __dev_desc_##_name __used   \
+__section(".dev.info") = {  \
+.name = _namestr,   \
+.class = _class,\
+
+#define DT_DEVICE_END   \
+};
+
+#endif /* __ASM_GENERIC_DEVICE_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 03/29] xen/asm-generic: introduce stub header cpufeature.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces stub header needed for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/cpufeature.h | 23 +++
 1 file changed, 23 insertions(+)
 create mode 100644 xen/include/asm-generic/cpufeature.h

diff --git a/xen/include/asm-generic/cpufeature.h 
b/xen/include/asm-generic/cpufeature.h
new file mode 100644
index 00..86e2a8b455
--- /dev/null
+++ b/xen/include/asm-generic/cpufeature.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_CPUFEATURE_H__
+#define __ASM_GENERIC_CPUFEATURE_H__
+
+#ifndef __ASSEMBLY__
+
+static inline int cpu_nr_siblings(unsigned int cpu)
+{
+return 1;
+}
+
+#endif
+
+#endif /* __ASM_GENERIC_CPUFEATURE_H__  */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 01/29] xen/asm-generic: introduce stub header spinlock.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces stub header needed for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/spinlock.h | 23 +++
 1 file changed, 23 insertions(+)
 create mode 100644 xen/include/asm-generic/spinlock.h

diff --git a/xen/include/asm-generic/spinlock.h 
b/xen/include/asm-generic/spinlock.h
new file mode 100644
index 00..22a9ec5222
--- /dev/null
+++ b/xen/include/asm-generic/spinlock.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_SPINLOCK_H__
+#define __ASM_GENERIC_SPINLOCK_H__
+
+#define arch_lock_acquire_barrier() smp_mb()
+#define arch_lock_release_barrier() smp_mb()
+
+#define arch_lock_relax() cpu_relax()
+#define arch_lock_signal() do { \
+} while(0)
+
+#define arch_lock_signal_wmb() arch_lock_signal()
+
+#endif /* __ASM_GENERIC_SPINLOCK_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 06/29] xen/asm-generic: introduce stub header grant_table.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces stub header needed for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/grant_table.h | 14 ++
 1 file changed, 14 insertions(+)
 create mode 100644 xen/include/asm-generic/grant_table.h

diff --git a/xen/include/asm-generic/grant_table.h 
b/xen/include/asm-generic/grant_table.h
new file mode 100644
index 00..bd8d85f1ff
--- /dev/null
+++ b/xen/include/asm-generic/grant_table.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_GRANTTABLE_H__
+#define __ASM_GENERIC_GRANTTABLE_H__
+
+#endif /* __ASM_GENERIC_GRANTTABLE_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 00/29] Introduce stub headers necessary for full Xen build

2023-09-14 Thread Oleksii Kurochko

Based on two patch series [1] and [2], the idea of which is to provide minimal
amount of things for a complete Xen build, a large amount of headers are the 
same
or almost the same, so it makes sense to move them to asm-generic.

Also, providing such stub headers should help future architectures to add
a full Xen build.

[1] 
https://lore.kernel.org/xen-devel/cover.1694543103.git.sanasta...@raptorengineering.com/
[2] 
https://lore.kernel.org/xen-devel/cover.1692181079.git.oleksii.kuroc...@gmail.com/

Oleksii Kurochko (29):
  xen/asm-generic: introduce stub header spinlock.h
  xen/asm-generic: introduce stub header paging.h
  xen/asm-generic: introduce stub header cpufeature.h
  xen/asm-generic: introduce stub header device.h
  xen/asm-generic: introduce stub header event.h
  xen/asm-generic: introduce stub header grant_table.h
  xen/asm-generic: introduce stub header guest_atomics.h
  xen/asm-generic: introduce stub hypercall.h
  xen/asm-generic: introduce stub header iocap.h
  xen/asm-generic: introduce stub header iommu.h
  xen/asm-generic: introduce stub header mem_access.h
  xen/asm-generic: introduce stub header pci.h
  xen/asm-generic: introduce stub header random.h
  xen/asm-generic: introduce stub header setup.h
  xen/asm-generic: introduce stub header xenoprof.h
  xen/asm-generic: introduce stub header flushtlb.h
  xen/asm-generic: introduce stub header percpu.h
  xen/asm-generic: introduce stub header smp.h
  xen/asm-generic: introduce stub header hardirq.h
  xen/asm-generic: introduce stub header div64.h
  xen/asm-generic: introduce stub header altp2m.h
  xen/asm-generic: introduce stub header delay.h
  xen/asm-generic: introduce stub header domain.h
  xen/asm-generic: introduce stub header guest_access.h
  xen/asm-generic: introduce stub header irq.h
  xen/asm-generic: introduce stub header monitor.h
  xen/asm-generic: introduce stub header numa.h
  xen/asm-generic: introduce stub header p2m.h
  xen/asm-generic: introduce stub header softirq.h

 xen/include/asm-generic/altp2m.h|  34 +++
 xen/include/asm-generic/cpufeature.h|  23 +
 xen/include/asm-generic/delay.h |  21 +
 xen/include/asm-generic/device.h|  65 ++
 xen/include/asm-generic/div64.h |  24 +
 xen/include/asm-generic/domain.h|  53 +++
 xen/include/asm-generic/event.h |  39 
 xen/include/asm-generic/flushtlb.h  |  42 +
 xen/include/asm-generic/grant_table.h   |  14 +++
 xen/include/asm-generic/guest_access.h  |  31 +++
 xen/include/asm-generic/guest_atomics.h |  47 ++
 xen/include/asm-generic/hardirq.h   |  27 ++
 xen/include/asm-generic/hypercall.h |  14 +++
 xen/include/asm-generic/iocap.h |  17 
 xen/include/asm-generic/iommu.h |  17 
 xen/include/asm-generic/irq.h   |  44 +
 xen/include/asm-generic/mem_access.h|  14 +++
 xen/include/asm-generic/monitor.h   |  64 +
 xen/include/asm-generic/numa.h  |  35 
 xen/include/asm-generic/p2m.h   | 115 
 xen/include/asm-generic/paging.h|  17 
 xen/include/asm-generic/pci.h   |  18 
 xen/include/asm-generic/percpu.h|  35 
 xen/include/asm-generic/random.h|  20 +
 xen/include/asm-generic/setup.h |  16 
 xen/include/asm-generic/smp.h   |  30 +++
 xen/include/asm-generic/softirq.h   |  17 
 xen/include/asm-generic/spinlock.h  |  23 +
 xen/include/asm-generic/xenoprof.h  |  14 +++
 29 files changed, 930 insertions(+)
 create mode 100644 xen/include/asm-generic/altp2m.h
 create mode 100644 xen/include/asm-generic/cpufeature.h
 create mode 100644 xen/include/asm-generic/delay.h
 create mode 100644 xen/include/asm-generic/device.h
 create mode 100644 xen/include/asm-generic/div64.h
 create mode 100644 xen/include/asm-generic/domain.h
 create mode 100644 xen/include/asm-generic/event.h
 create mode 100644 xen/include/asm-generic/flushtlb.h
 create mode 100644 xen/include/asm-generic/grant_table.h
 create mode 100644 xen/include/asm-generic/guest_access.h
 create mode 100644 xen/include/asm-generic/guest_atomics.h
 create mode 100644 xen/include/asm-generic/hardirq.h
 create mode 100644 xen/include/asm-generic/hypercall.h
 create mode 100644 xen/include/asm-generic/iocap.h
 create mode 100644 xen/include/asm-generic/iommu.h
 create mode 100644 xen/include/asm-generic/irq.h
 create mode 100644 xen/include/asm-generic/mem_access.h
 create mode 100644 xen/include/asm-generic/monitor.h
 create mode 100644 xen/include/asm-generic/numa.h
 create mode 100644 xen/include/asm-generic/p2m.h
 create mode 100644 xen/include/asm-generic/paging.h
 create mode 100644 xen/include/asm-generic/pci.h
 create mode 100644 xen/include/asm-generic/percpu.h
 create mode 100644 xen/include/asm-generic/random.h
 create mode 100644 xen/include/asm-generic/setup.h
 create mode 100644 xen/include/asm

[PATCH v1 08/29] xen/asm-generic: introduce stub hypercall.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/hypercall.h | 14 ++
 1 file changed, 14 insertions(+)
 create mode 100644 xen/include/asm-generic/hypercall.h

diff --git a/xen/include/asm-generic/hypercall.h 
b/xen/include/asm-generic/hypercall.h
new file mode 100644
index 00..d89196fb3e
--- /dev/null
+++ b/xen/include/asm-generic/hypercall.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_HYPERCALL_H__
+#define __ASM_GENERIC_HYPERCALL_H__
+
+#endif /* __ASM_GENERIC_HYPERCALL_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 02/29] xen/asm-generic: introduce stub header paging.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces stub header needed for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/paging.h | 17 +
 1 file changed, 17 insertions(+)
 create mode 100644 xen/include/asm-generic/paging.h

diff --git a/xen/include/asm-generic/paging.h b/xen/include/asm-generic/paging.h
new file mode 100644
index 00..2aab63b536
--- /dev/null
+++ b/xen/include/asm-generic/paging.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_PAGING_H__
+#define __ASM_GENERIC_PAGING_H__
+
+#define paging_mode_translate(d)   (1)
+#define paging_mode_external(d)(1)
+
+#endif /* __ASM_GENERIC_PAGING_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 16/29] xen/asm-generic: introduce stub header flushtlb.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/flushtlb.h | 42 ++
 1 file changed, 42 insertions(+)
 create mode 100644 xen/include/asm-generic/flushtlb.h

diff --git a/xen/include/asm-generic/flushtlb.h 
b/xen/include/asm-generic/flushtlb.h
new file mode 100644
index 00..79e4773179
--- /dev/null
+++ b/xen/include/asm-generic/flushtlb.h
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_FLUSHTLB_H__
+#define __ASM_GENERIC_FLUSHTLB_H__
+
+#include 
+
+/*
+ * Filter the given set of CPUs, removing those that definitely flushed their
+ * TLB since @page_timestamp.
+ */
+/* XXX lazy implementation just doesn't clear anything */
+static inline void tlbflush_filter(cpumask_t *mask, uint32_t page_timestamp) {}
+
+#define tlbflush_current_time() (0)
+
+static inline void page_set_tlbflush_timestamp(struct page_info *page)
+{
+BUG();
+}
+
+/* Flush specified CPUs' TLBs */
+void arch_flush_tlb_mask(const cpumask_t *mask);
+
+#endif /* __ASM_GENERIC_FLUSHTLB_H__ */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
+
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: BSD
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 25/29] xen/asm-generic: introduce stub header irq.h

2023-09-14 Thread Oleksii Kurochko

The patch introduces header stub necessry for full Xen build.

Signed-off-by: Oleksii Kurochko 
---
 xen/include/asm-generic/irq.h | 44 +++
 1 file changed, 44 insertions(+)
 create mode 100644 xen/include/asm-generic/irq.h

diff --git a/xen/include/asm-generic/irq.h b/xen/include/asm-generic/irq.h
new file mode 100644
index 00..5f68cbd10d
--- /dev/null
+++ b/xen/include/asm-generic/irq.h
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __ASM_GENERIC_IRQ_H__
+#define __ASM_GENERIC_IRQ_H__
+
+#include 
+#include 
+#include 
+
+/* TODO */
+#define nr_irqs 0U
+#define nr_static_irqs 0
+#define arch_hwdom_irqs(domid) 0U
+
+#define domain_pirq_to_irq(d, pirq) (pirq)
+
+#define arch_evtchn_bind_pirq(d, pirq) ((void)((d) + (pirq)))
+
+struct arch_pirq {
+};
+
+struct arch_irq_desc {
+unsigned int type;
+};
+
+static inline void arch_move_irqs(struct vcpu *v)
+{
+BUG();
+}
+
+static inline int platform_get_irq(const struct dt_device_node *device, int 
index)
+{
+BUG();
+}
+
+#endif /* __ASM_GENERIC_IRQ_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: BSD
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v5 1/2] xen: asm-generic support

2023-09-06 Thread Oleksii Kurochko

Some headers are shared between individual architectures or are empty.
To avoid duplication of these headers, asm-generic is introduced.

With the following patch, an architecture uses generic headers
mentioned in the file arch/$(ARCH)/include/asm/Makefile

To use a generic header is needed to add to
arch/$(ARCH)/include/asm/Makefile :
generic-y += 

For each mentioned header in arch/$(ARCH)/include/asm/Makefile,
the necessary wrapper in arch/$(ARCH)/include/generated/asm will be
generated.

As the base Makefile.asm-generic from Linux kernel was taken.
( 06c2afb862f9da8 "Linux 6.5-rc1" ).

Signed-off-by: Oleksii Kurochko 
---
Changes in V5:
 - Update the commit message
 - Update SPDX license in Makefile.
 - Remove code related to UML
 - Include $(src)/Makefile instead of $(kbuild-file) 
 - Update comment message in Makefile.asm-generic
 - Update .gitignore
 - Update path to generated headers in CFLAGS.
 - Use the latest version of Linux's Makefile.asm-generic
---
Changes in V4:
 - introduce asm-generic support
 - update commit message
---
Changes in V3:
 - Rename stubs dir to asm-generic
---
Changes in V2:
 - Nothing changed.
---
 .gitignore   |  1 +
 xen/Makefile | 10 +-
 xen/scripts/Makefile.asm-generic | 53 
 3 files changed, 63 insertions(+), 1 deletion(-)
 create mode 100644 xen/scripts/Makefile.asm-generic

diff --git a/.gitignore b/.gitignore
index 50273adb8d..287166f8fc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -267,6 +267,7 @@ xen/arch/*/efi/efi.h
 xen/arch/*/efi/pe.c
 xen/arch/*/efi/runtime.c
 xen/arch/*/include/asm/asm-offsets.h
+xen/arch/*/include/generated
 xen/build-dir-cppcheck/
 xen/common/config_data.S
 xen/common/config.gz
diff --git a/xen/Makefile b/xen/Makefile
index f57e5a596c..a86b64303d 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -438,6 +438,7 @@ ifdef building_out_of_srctree
 endif
 CFLAGS += -I$(srctree)/include
 CFLAGS += -I$(srctree)/arch/$(SRCARCH)/include
+CFLAGS += -I$(objtree)/arch/$(SRCARCH)/include/generated
 
 # Note that link order matters!
 ALL_OBJS-y:= common/built_in.o
@@ -580,6 +581,7 @@ _clean:
rm -f $(TARGET).efi $(TARGET).efi.map $(TARGET).efi.elf 
$(TARGET).efi.stripped
rm -f asm-offsets.s arch/*/include/asm/asm-offsets.h
rm -f .banner .allconfig.tmp include/xen/compile.h
+   rm -rf $(objtree)/arch/*/include/generated
 
 .PHONY: _distclean
 _distclean: clean
@@ -589,7 +591,7 @@ $(TARGET).gz: $(TARGET)
gzip -n -f -9 < $< > $@.new
mv $@.new $@
 
-$(TARGET): outputmakefile FORCE
+$(TARGET): outputmakefile asm-generic FORCE
$(Q)$(MAKE) $(build)=tools
$(Q)$(MAKE) $(build)=. include/xen/compile.h
$(Q)$(MAKE) $(build)=include all
@@ -667,6 +669,12 @@ endif # need-sub-make
 PHONY += FORCE
 FORCE:
 
+# Support for using generic headers in asm-generic
+PHONY += asm-generic
+asm-generic:
+   $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
+   obj=arch/$(SRCARCH)/include/generated/asm
+
 # Declare the contents of the PHONY variable as phony.  We keep that
 # information in a variable so we can use it in if_changed and friends.
 .PHONY: $(PHONY)
diff --git a/xen/scripts/Makefile.asm-generic b/xen/scripts/Makefile.asm-generic
new file mode 100644
index 00..92a3a741c5
--- /dev/null
+++ b/xen/scripts/Makefile.asm-generic
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: GPL-2.0-only
+# include/asm-generic contains a lot of files that are used
+# verbatim by several architectures.
+#
+# This Makefile reads the file arch/$(SRCARCH)/include/asm/Makefile
+# and for each file listed in this file with generic-y creates
+# a small wrapper file in arch/$(SRCARCH)/include/generated/asm.
+
+PHONY := all
+all:
+
+src := $(subst /generated,,$(obj))
+
+include $(srctree)/scripts/Kbuild.include
+-include $(src)/Makefile
+
+redundant := $(filter $(mandatory-y) $(generated-y), $(generic-y))
+redundant += $(foreach f, $(generic-y), $(if $(wildcard 
$(srctree)/$(src)/$(f)),$(f)))
+redundant := $(sort $(redundant))
+$(if $(redundant),\
+   $(warning redundant generic-y found in $(src)/Kbuild: $(redundant)))
+
+# If arch does not implement mandatory headers, fallback to asm-generic ones.
+mandatory-y := $(filter-out $(generated-y), $(mandatory-y))
+generic-y   += $(foreach f, $(mandatory-y), $(if $(wildcard 
$(srctree)/$(src)/$(f)),,$(f)))
+
+generic-y   := $(addprefix $(obj)/, $(generic-y))
+generated-y := $(addprefix $(obj)/, $(generated-y))
+
+# Remove stale wrappers when the corresponding files are removed from generic-y
+old-headers := $(wildcard $(obj)/*.h)
+unwanted:= $(filter-out $(generic-y) $(generated-y),$(old-headers))
+
+quiet_cmd_wrap = WRAP$@
+  cmd_wrap = echo "\#include " > $@
+
+quiet_cmd_remove = REMOVE  $(unwanted)
+  cmd_remove = rm -f $(unwanted)
+
+all: $(generic-y)
+   $(if $(unwanted),$(call cmd,remove))
+   @:
+

[PATCH v5 0/2] introduce stub directory to storing empty/stub headers

2023-09-06 Thread Oleksii Kurochko

A lot of empty/stub headers should be introduced during the early steps of 
adding
support of new architecture.

An example can be found here:
1. 
https://lore.kernel.org/xen-devel/cover.1692181079.git.oleksii.kuroc...@gmail.com/
2. 
https://lore.kernel.org/xen-devel/a92f99e8f697da99d77bfde562a549dbef3760ce.1692816595.git.sanasta...@raptorengineering.com/

As part of the patch series, asm/vm_event.h was moved to the stubs directory 
because
It is the same for ARM, PPC, and RISC-V.

---
Changes in V5:
- Update SPDX license.
- Remove code related to UML in Makefile.asm-generic.
- Include $(src)/Makefile instead of $(kbuild-file).
- Update comment message in Makefile.asm-generic.
- Update .gitignore.
- Update path to generated headers in CFLAGS.
- Use the latest version of Linux's Makefile.asm-generic.
- Introduce asm-generic's vm_event.h.
- Switch ARM to use asm-generic/vm_event.h.
---
Changes in V4:
 - add asm-generic support
 - update path of vm_event.h from include/asm-generic/asm to include/asm-generic
---
Changes in V3:
 - add Acked-by: Stefano Stabellini  for "xen: move 
arm/include/asm/vm_event.h to asm-generic"
 - update SPDX tag.
 - move asm/vm_event.h to asm-generic.
 - rename stubs dir to asm-generic.

---
Changes in V2:
 - change public/domctl.h to public/vm_event.h.
 - update commit message of [PATCH v2 2/2] xen: move arm/include/asm/vm_event.h 
to stubs


Oleksii Kurochko (2):
  xen: asm-generic support
  xen: move arm/include/asm/vm_event.h to stubs

 .gitignore  |  1 +
 xen/Makefile| 10 -
 xen/arch/arm/include/asm/Makefile   |  2 +
 xen/arch/arm/include/asm/vm_event.h | 66 -
 xen/include/asm-generic/vm_event.h  | 55 
 xen/scripts/Makefile.asm-generic| 53 +++
 6 files changed, 120 insertions(+), 67 deletions(-)
 create mode 100644 xen/arch/arm/include/asm/Makefile
 delete mode 100644 xen/arch/arm/include/asm/vm_event.h
 create mode 100644 xen/include/asm-generic/vm_event.h
 create mode 100644 xen/scripts/Makefile.asm-generic

-- 
2.41.0

[PATCH v5 2/2] xen: move arm/include/asm/vm_event.h to stubs

2023-09-06 Thread Oleksii Kurochko

asm/vm_event.h is common for ARM and RISC-V so it will be moved to
stubs dir.

Original asm/vm_event.h from ARM was updated:
 * use SPDX-License-Identifier.
 * update comment messages of stubs.
 * update #ifdef
 * instead of "include " -> "public/vm_event.h"

As vm_event.h was moved to asm-generic then it is needed to create
Makefile in arm/include/asm/ and add generated-y += vm_event.h to
it.

Signed-off-by: Oleksii Kurochko 
---
Changes in V5:
 - Update the commit message
 - Remove Acked-by:...
 - Switch ARM to use asm-generic/vm_event.h
---
Changes in V4:
 - update path of vm_event.h from include/asm-generic/asm to include/asm-generic
---
Changes in V3:
 - add Acked-by: Stefano Stabellini  for "xen: move 
arm/include/asm/vm_event.h to asm-generic"
 - update SPDX tag.
 - move asm/vm_event.h to asm-generic.
---
Changes in V2:
 - change public/domctl.h to public/vm_event.h.
 - update commit message of [PATCH v2 2/2] xen: move arm/include/asm/vm_event.h 
to stubs
---
 xen/arch/arm/include/asm/Makefile   |  2 +
 xen/arch/arm/include/asm/vm_event.h | 66 -
 xen/include/asm-generic/vm_event.h  | 55 
 3 files changed, 57 insertions(+), 66 deletions(-)
 create mode 100644 xen/arch/arm/include/asm/Makefile
 delete mode 100644 xen/arch/arm/include/asm/vm_event.h
 create mode 100644 xen/include/asm-generic/vm_event.h

diff --git a/xen/arch/arm/include/asm/Makefile 
b/xen/arch/arm/include/asm/Makefile
new file mode 100644
index 00..821addb0bf
--- /dev/null
+++ b/xen/arch/arm/include/asm/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+generic-y += vm_event.h
diff --git a/xen/arch/arm/include/asm/vm_event.h 
b/xen/arch/arm/include/asm/vm_event.h
deleted file mode 100644
index 4d861373b3..00
--- a/xen/arch/arm/include/asm/vm_event.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * vm_event.h: architecture specific vm_event handling routines
- *
- * Copyright (c) 2015 Tamas K Lengyel (ta...@tklengyel.com)
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __ASM_ARM_VM_EVENT_H__
-#define __ASM_ARM_VM_EVENT_H__
-
-#include 
-#include 
-
-static inline int vm_event_init_domain(struct domain *d)
-{
-/* Nothing to do. */
-return 0;
-}
-
-static inline void vm_event_cleanup_domain(struct domain *d)
-{
-memset(>monitor, 0, sizeof(d->monitor));
-}
-
-static inline void vm_event_toggle_singlestep(struct domain *d, struct vcpu *v,
-  vm_event_response_t *rsp)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_register_write_resume(struct vcpu *v, vm_event_response_t *rsp)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_emulate_check(struct vcpu *v, vm_event_response_t *rsp)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_sync_event(struct vcpu *v, bool value)
-{
-/* Not supported on ARM. */
-}
-
-static inline
-void vm_event_reset_vmtrace(struct vcpu *v)
-{
-/* Not supported on ARM. */
-}
-
-#endif /* __ASM_ARM_VM_EVENT_H__ */
diff --git a/xen/include/asm-generic/vm_event.h 
b/xen/include/asm-generic/vm_event.h
new file mode 100644
index 00..29ab1b01b4
--- /dev/null
+++ b/xen/include/asm-generic/vm_event.h
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier:  GPL-2.0-only */
+/*
+ * vm_event.h: stubs for architecture specific vm_event handling routines
+ *
+ * Copyright (c) 2015 Tamas K Lengyel (ta...@tklengyel.com)
+ */
+
+#ifndef __ASM_STUB_VM_EVENT_H__
+#define __ASM_STUB_VM_EVENT_H__
+
+#include 
+#include 
+
+static inline int vm_event_init_domain(struct domain *d)
+{
+/* Nothing to do. */
+return 0;
+}
+
+static inline void vm_event_cleanup_domain(struct domain *d)
+{
+memset(>monitor, 0, sizeof(d->monitor));
+}
+
+static inline void vm_event_toggle_singlestep(struct domain *d, struct vcpu *v,
+  vm_event_response_t *rsp)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_register_write_resume(struct vcpu *v, vm_event_response_t *rsp)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_emulate_check(struct vcpu *v, vm_event_response_t *rsp)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_sync_event(struct vcpu *v, bool value)
+{
+/* Nothing to do. */
+}
+
+static inline
+void vm_event_reset_vmtrace(struct

[PATCH] xen: avoid generation of stub header

2023-11-01 Thread Oleksii Kurochko

Platforms which doesn't have HAS_PCI enabled it is needed to
have , which contains only an empty definition of
struct arch_pci_dev ( except ARM, it introduces several
ARM-specific functions ).

Also, for architectures ( such as PPC or RISC-V ) on initial
stages of adding support, it is needed to generate 
for only define the mentioned above arch_pci_dev structure.

For the Arm-only stubs ( mentioned in  for disabled
HAS_PCI and ARM-specific) will be needed
to add  directly alongside . Only to
  was added.

Suggested-by: Jan Beulich 
Signed-off-by: Oleksii Kurochko 
---
 xen/arch/arm/domain_build.c|  1 +
 xen/arch/arm/include/asm/pci.h |  7 ---
 xen/arch/ppc/include/asm/pci.h |  7 ---
 xen/include/xen/pci.h  | 11 +++
 4 files changed, 12 insertions(+), 14 deletions(-)
 delete mode 100644 xen/arch/ppc/include/asm/pci.h

diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 49792dd590..2dd2926b41 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -23,6 +23,7 @@
 #include 
 #include 
 #include 
+#include 
 #include 
 #include 
 #include 
diff --git a/xen/arch/arm/include/asm/pci.h b/xen/arch/arm/include/asm/pci.h
index 8cb46f6b71..7f77226c9b 100644
--- a/xen/arch/arm/include/asm/pci.h
+++ b/xen/arch/arm/include/asm/pci.h
@@ -130,13 +130,6 @@ bool pci_check_bar(const struct pci_dev *pdev, mfn_t 
start, mfn_t end);
 
 #else   /*!CONFIG_HAS_PCI*/
 
-struct arch_pci_dev { };
-
-static always_inline bool is_pci_passthrough_enabled(void)
-{
-return false;
-}
-
 struct pci_dev;
 
 static inline void arch_pci_init_pdev(struct pci_dev *pdev) {}
diff --git a/xen/arch/ppc/include/asm/pci.h b/xen/arch/ppc/include/asm/pci.h
deleted file mode 100644
index e76c8e5475..00
--- a/xen/arch/ppc/include/asm/pci.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef __ASM_PPC_PCI_H__
-#define __ASM_PPC_PCI_H__
-
-struct arch_pci_dev {
-};
-
-#endif /* __ASM_PPC_PCI_H__ */
diff --git a/xen/include/xen/pci.h b/xen/include/xen/pci.h
index 251b8761a8..168ca320ce 100644
--- a/xen/include/xen/pci.h
+++ b/xen/include/xen/pci.h
@@ -68,7 +68,18 @@ typedef union {
 };
 } pci_sbdf_t;
 
+#ifdef CONFIG_HAS_PCI
 #include 
+#else
+
+struct arch_pci_dev { };
+
+static always_inline bool is_pci_passthrough_enabled(void)
+{
+return false;
+}
+
+#endif
 
 struct pci_dev_info {
 /*
-- 
2.41.0

[PATCH] xen: remove

2023-10-31 Thread Oleksii Kurochko

 only declares udelay() function so udelay()  
declaration was moved to xen/delay.h.

For x86, __udelay() was renamed to udelay() and removed
inclusion of  in x86 code.

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/arm/include/asm/delay.h   | 14 --
 xen/arch/riscv/include/asm/delay.h | 13 -
 xen/arch/x86/cpu/microcode/core.c  |  2 +-
 xen/arch/x86/delay.c   |  2 +-
 xen/arch/x86/include/asm/delay.h   | 13 -
 xen/include/xen/delay.h|  3 ++-
 6 files changed, 4 insertions(+), 43 deletions(-)
 delete mode 100644 xen/arch/arm/include/asm/delay.h
 delete mode 100644 xen/arch/riscv/include/asm/delay.h
 delete mode 100644 xen/arch/x86/include/asm/delay.h

diff --git a/xen/arch/arm/include/asm/delay.h b/xen/arch/arm/include/asm/delay.h
deleted file mode 100644
index 042907d9d5..00
--- a/xen/arch/arm/include/asm/delay.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#ifndef _ARM_DELAY_H
-#define _ARM_DELAY_H
-
-extern void udelay(unsigned long usecs);
-
-#endif /* defined(_ARM_DELAY_H) */
-/*
- * Local variables:
- * mode: C
- * c-file-style: "BSD"
- * c-basic-offset: 4
- * indent-tabs-mode: nil
- * End:
- */
diff --git a/xen/arch/riscv/include/asm/delay.h 
b/xen/arch/riscv/include/asm/delay.h
deleted file mode 100644
index 2d59622c75..00
--- a/xen/arch/riscv/include/asm/delay.h
+++ /dev/null
@@ -1,13 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright (C) 2009 Chen Liqin 
- * Copyright (C) 2016 Regents of the University of California
- */
-
-#ifndef _ASM_RISCV_DELAY_H
-#define _ASM_RISCV_DELAY_H
-
-#define udelay udelay
-extern void udelay(unsigned long usecs);
-
-#endif /* _ASM_RISCV_DELAY_H */
diff --git a/xen/arch/x86/cpu/microcode/core.c 
b/xen/arch/x86/cpu/microcode/core.c
index c3fee62906..48822360c0 100644
--- a/xen/arch/x86/cpu/microcode/core.c
+++ b/xen/arch/x86/cpu/microcode/core.c
@@ -23,6 +23,7 @@
 
 #include 
 #include 
+#include 
 #include 
 #include 
 #include 
@@ -35,7 +36,6 @@
 
 #include 
 #include 
-#include 
 #include 
 #include 
 #include 
diff --git a/xen/arch/x86/delay.c b/xen/arch/x86/delay.c
index 2662c26272..b3a41881a1 100644
--- a/xen/arch/x86/delay.c
+++ b/xen/arch/x86/delay.c
@@ -15,7 +15,7 @@
 #include 
 #include 
 
-void __udelay(unsigned long usecs)
+void udelay(unsigned long usecs)
 {
 unsigned long ticks = usecs * (cpu_khz / 1000);
 unsigned long s, e;
diff --git a/xen/arch/x86/include/asm/delay.h b/xen/arch/x86/include/asm/delay.h
deleted file mode 100644
index 9be2f46590..00
--- a/xen/arch/x86/include/asm/delay.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#ifndef _X86_DELAY_H
-#define _X86_DELAY_H
-
-/*
- * Copyright (C) 1993 Linus Torvalds
- *
- * Delay routines calling functions in arch/i386/lib/delay.c
- */
-
-extern void __udelay(unsigned long usecs);
-#define udelay(n) __udelay(n)
-
-#endif /* defined(_X86_DELAY_H) */
diff --git a/xen/include/xen/delay.h b/xen/include/xen/delay.h
index 9d70ef035f..a5189329c7 100644
--- a/xen/include/xen/delay.h
+++ b/xen/include/xen/delay.h
@@ -3,8 +3,9 @@
 
 /* Copyright (C) 1993 Linus Torvalds */
 
-#include 
 #define mdelay(n) (\
{unsigned long msec=(n); while (msec--) udelay(1000);})
 
+void udelay(unsigned long usecs);
+
 #endif /* defined(_LINUX_DELAY_H) */
-- 
2.41.0

[PATCH v2] xen: remove

2023-10-31 Thread Oleksii Kurochko

 only declares udelay() function so udelay()
declaration was moved to xen/delay.h.

For x86, __udelay() was renamed to udelay() and removed
inclusion of  in x86 code.

For ppc, udelay() stub definition was moved to ppc/stubs.c.

Suggested-by: Jan Beulich 
Signed-off-by: Oleksii Kurochko 
Reviewed-by: Jan Beulich 
---
Changes in v2:
 - rebase on top of the latest staging.
 - add Suggested-by:/Reviewed-by: Jan Beulich .
 - remove  for PPC.
 - remove changes related to RISC-V's  as they've not
   introduced in staging branch yet.
---
 xen/arch/arm/include/asm/delay.h  | 14 --
 xen/arch/ppc/include/asm/delay.h  | 12 
 xen/arch/ppc/stubs.c  |  7 +++
 xen/arch/x86/cpu/microcode/core.c |  2 +-
 xen/arch/x86/delay.c  |  2 +-
 xen/arch/x86/include/asm/delay.h  | 13 -
 xen/include/xen/delay.h   |  2 +-
 7 files changed, 10 insertions(+), 42 deletions(-)
 delete mode 100644 xen/arch/arm/include/asm/delay.h
 delete mode 100644 xen/arch/ppc/include/asm/delay.h
 delete mode 100644 xen/arch/x86/include/asm/delay.h

diff --git a/xen/arch/arm/include/asm/delay.h b/xen/arch/arm/include/asm/delay.h
deleted file mode 100644
index 042907d9d5..00
--- a/xen/arch/arm/include/asm/delay.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#ifndef _ARM_DELAY_H
-#define _ARM_DELAY_H
-
-extern void udelay(unsigned long usecs);
-
-#endif /* defined(_ARM_DELAY_H) */
-/*
- * Local variables:
- * mode: C
- * c-file-style: "BSD"
- * c-basic-offset: 4
- * indent-tabs-mode: nil
- * End:
- */
diff --git a/xen/arch/ppc/include/asm/delay.h b/xen/arch/ppc/include/asm/delay.h
deleted file mode 100644
index da6635888b..00
--- a/xen/arch/ppc/include/asm/delay.h
+++ /dev/null
@@ -1,12 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-#ifndef __ASM_PPC_DELAY_H__
-#define __ASM_PPC_DELAY_H__
-
-#include 
-
-static inline void udelay(unsigned long usecs)
-{
-BUG_ON("unimplemented");
-}
-
-#endif /* __ASM_PPC_DELAY_H__ */
diff --git a/xen/arch/ppc/stubs.c b/xen/arch/ppc/stubs.c
index 4c276b0e39..a96e45626d 100644
--- a/xen/arch/ppc/stubs.c
+++ b/xen/arch/ppc/stubs.c
@@ -337,3 +337,10 @@ int __init parse_arch_dom0_param(const char *s, const char 
*e)
 {
 BUG_ON("unimplemented");
 }
+
+/* delay.c */
+
+void udelay(unsigned long usecs)
+{
+BUG_ON("unimplemented");
+}
diff --git a/xen/arch/x86/cpu/microcode/core.c 
b/xen/arch/x86/cpu/microcode/core.c
index 65ebeb50de..22d5e04552 100644
--- a/xen/arch/x86/cpu/microcode/core.c
+++ b/xen/arch/x86/cpu/microcode/core.c
@@ -23,6 +23,7 @@
 
 #include 
 #include 
+#include 
 #include 
 #include 
 #include 
@@ -35,7 +36,6 @@
 
 #include 
 #include 
-#include 
 #include 
 #include 
 #include 
diff --git a/xen/arch/x86/delay.c b/xen/arch/x86/delay.c
index 2662c26272..b3a41881a1 100644
--- a/xen/arch/x86/delay.c
+++ b/xen/arch/x86/delay.c
@@ -15,7 +15,7 @@
 #include 
 #include 
 
-void __udelay(unsigned long usecs)
+void udelay(unsigned long usecs)
 {
 unsigned long ticks = usecs * (cpu_khz / 1000);
 unsigned long s, e;
diff --git a/xen/arch/x86/include/asm/delay.h b/xen/arch/x86/include/asm/delay.h
deleted file mode 100644
index 9be2f46590..00
--- a/xen/arch/x86/include/asm/delay.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#ifndef _X86_DELAY_H
-#define _X86_DELAY_H
-
-/*
- * Copyright (C) 1993 Linus Torvalds
- *
- * Delay routines calling functions in arch/i386/lib/delay.c
- */
-
-extern void __udelay(unsigned long usecs);
-#define udelay(n) __udelay(n)
-
-#endif /* defined(_X86_DELAY_H) */
diff --git a/xen/include/xen/delay.h b/xen/include/xen/delay.h
index 9150226271..8fd3b8f99f 100644
--- a/xen/include/xen/delay.h
+++ b/xen/include/xen/delay.h
@@ -3,7 +3,7 @@
 
 /* Copyright (C) 1993 Linus Torvalds */
 
-#include 
+void udelay(unsigned long usecs);
 
 static inline void mdelay(unsigned long msec)
 {
-- 
2.41.0

[PATCH v1 35/57] xen/riscv: introduce asm/domain.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/domain.h | 43 +
 1 file changed, 43 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/domain.h

diff --git a/xen/arch/riscv/include/asm/domain.h 
b/xen/arch/riscv/include/asm/domain.h
new file mode 100644
index 00..680c357d4d
--- /dev/null
+++ b/xen/arch/riscv/include/asm/domain.h
@@ -0,0 +1,43 @@
+#ifndef __ASM_RISCV_DOMAIN_H__
+#define __ASM_RISCV_DOMAIN_H__
+
+#include 
+#include 
+
+struct hvm_domain
+{
+uint64_t  params[HVM_NR_PARAMS];
+};
+
+#define is_domain_direct_mapped(d) ((void)(d), 0)
+
+struct arch_vcpu_io {
+};
+
+struct arch_vcpu {
+};
+
+struct arch_domain {
+struct hvm_domain hvm;
+};
+
+#include 
+
+static inline struct vcpu_guest_context *alloc_vcpu_guest_context(void)
+{
+return xmalloc(struct vcpu_guest_context);
+}
+
+static inline void free_vcpu_guest_context(struct vcpu_guest_context *vgc)
+{
+xfree(vgc);
+}
+
+struct guest_memory_policy {};
+static inline void update_guest_memory_policy(struct vcpu *v,
+  struct guest_memory_policy *gmp)
+{}
+
+static inline void arch_vcpu_block(struct vcpu *v) {}
+
+#endif /* __ASM_RISCV_DOMAIN_H__ */
\ No newline at end of file
-- 
2.41.0

[PATCH v1 22/57] xen/riscv: introduce bitops.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/bitops.h | 288 
 1 file changed, 288 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/bitops.h

diff --git a/xen/arch/riscv/include/asm/bitops.h 
b/xen/arch/riscv/include/asm/bitops.h
new file mode 100644
index 00..24a49c499b
--- /dev/null
+++ b/xen/arch/riscv/include/asm/bitops.h
@@ -0,0 +1,288 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2012 Regents of the University of California */
+
+#ifndef _ASM_RISCV_BITOPS_H
+#define _ASM_RISCV_BITOPS_H
+
+#include 
+
+#define BITOP_BITS_PER_WORD 32
+#define BITOP_MASK(nr) (1UL << ((nr) % BITOP_BITS_PER_WORD))
+#define BITOP_WORD(nr) ((nr) / BITOP_BITS_PER_WORD)
+#define BITS_PER_BYTE  8
+
+#define __set_bit(n,p)  set_bit(n,p)
+#define __clear_bit(n,p)clear_bit(n,p)
+
+#define __AMO(op)  "amo" #op ".w"
+
+#define __test_and_op_bit_ord(op, mod, nr, addr, ord)  \
+({ \
+   unsigned long __res, __mask;\
+   __mask = BITOP_MASK(nr);\
+   __asm__ __volatile__ (  \
+   __AMO(op) #ord " %0, %2, %1"\
+   : "=r" (__res), "+A" (addr[BITOP_WORD(nr)]) \
+   : "r" (mod(__mask)) \
+   : "memory");\
+   ((__res & __mask) != 0);\
+})
+
+#define __op_bit_ord(op, mod, nr, addr, ord)   \
+   __asm__ __volatile__ (  \
+   __AMO(op) #ord " zero, %1, %0"  \
+   : "+A" (addr[BITOP_WORD(nr)])   \
+   : "r" (mod(BITOP_MASK(nr))) \
+   : "memory");
+
+#define __test_and_op_bit(op, mod, nr, addr)   \
+   __test_and_op_bit_ord(op, mod, nr, addr, .aqrl)
+
+#define __op_bit(op, mod, nr, addr)\
+   __op_bit_ord(op, mod, nr, addr, )
+
+/* Bitmask modifiers */
+#define __NOP(x)   (x)
+#define __NOT(x)   (~(x))
+
+/**
+ * __test_and_set_bit - Set a bit and return its old value
+ * @nr: Bit to set
+ * @addr: Address to count from
+ *
+ * This operation may be reordered on other architectures than x86.
+ */
+static inline int __test_and_set_bit(int nr, volatile void *p)
+{
+   volatile uint32_t *addr = p;
+
+   return __test_and_op_bit(or, __NOP, nr, addr);
+}
+
+/**
+ * __test_and_clear_bit - Clear a bit and return its old value
+ * @nr: Bit to clear
+ * @addr: Address to count from
+ *
+ * This operation can be reordered on other architectures other than x86.
+ */
+static inline int __test_and_clear_bit(int nr, volatile void *p)
+{
+   volatile uint32_t *addr = p;
+
+   return __test_and_op_bit(and, __NOT, nr, addr);
+}
+
+/**
+ * set_bit - Atomically set a bit in memory
+ * @nr: the bit to set
+ * @addr: the address to start counting from
+ *
+ * Note: there are no guarantees that this function will not be reordered
+ * on non x86 architectures, so if you are writing portable code,
+ * make sure not to rely on its reordering guarantees.
+ *
+ * Note that @nr may be almost arbitrarily large; this function is not
+ * restricted to acting on a single-word quantity.
+ */
+static inline void set_bit(int nr, volatile void *p)
+{
+   volatile uint32_t *addr = p;
+
+   __op_bit(or, __NOP, nr, addr);
+}
+
+/**
+ * clear_bit - Clears a bit in memory
+ * @nr: Bit to clear
+ * @addr: Address to start counting from
+ *
+ * Note: there are no guarantees that this function will not be reordered
+ * on non x86 architectures, so if you are writing portable code,
+ * make sure not to rely on its reordering guarantees.
+ */
+static inline void clear_bit(int nr, volatile void *p)
+{
+   volatile uint32_t *addr = p;
+
+   __op_bit(and, __NOT, nr, addr);
+}
+
+static inline int test_bit(int nr, const volatile void *p)
+{
+   const volatile uint32_t *addr = (const volatile uint32_t *)p;
+
+   return 1UL & (addr[BITOP_WORD(nr)] >> (nr & (BITOP_BITS_PER_WORD-1)));
+}
+
+#undef __test_and_op_bit
+#undef __op_bit
+#undef __NOP
+#undef __NOT
+#undef __AMO
+
+static inline int fls(unsigned int x)
+{
+return generic_fls(x);
+}
+
+static inline int flsl(unsigned long x)
+{
+return generic_flsl(x);
+}
+
+#define test_and_set_bit   __test_and_set_bit
+#define test_and_clear_bit __test_and_clear_bit
+
+/* Based on linux/include/asm-generic/bitops/find.h */
+
+#ifndef find_next_bit
+/**
+ * find_next_bit - find the next set bit in a memory region
+ * @addr: The address to base the search on
+ * @offset: The bitnumber to s

[PATCH v1 54/57] xen/rirscv: add minimal amount of stubs to build full Xen

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/Kconfig|   1 +
 xen/arch/riscv/Makefile   |   1 +
 xen/arch/riscv/early_printk.c | 168 -
 xen/arch/riscv/mm.c   |  52 +++-
 xen/arch/riscv/setup.c|   9 +-
 xen/arch/riscv/stubs.c| 437 ++
 xen/arch/riscv/traps.c|  25 ++
 7 files changed, 523 insertions(+), 170 deletions(-)
 create mode 100644 xen/arch/riscv/stubs.c

diff --git a/xen/arch/riscv/Kconfig b/xen/arch/riscv/Kconfig
index f382b36f6c..64caaa2750 100644
--- a/xen/arch/riscv/Kconfig
+++ b/xen/arch/riscv/Kconfig
@@ -4,6 +4,7 @@ config RISCV
 config RISCV_64
def_bool y
select 64BIT
+   select HAS_PDX
 
 config ARCH_DEFCONFIG
string
diff --git a/xen/arch/riscv/Makefile b/xen/arch/riscv/Makefile
index b08048948f..50c09469a0 100644
--- a/xen/arch/riscv/Makefile
+++ b/xen/arch/riscv/Makefile
@@ -5,6 +5,7 @@ obj-y += mm.o
 obj-$(CONFIG_RISCV_64) += riscv64/
 obj-y += sbi.o
 obj-y += setup.o
+obj-y += stubs.o
 obj-y += traps.o
 
 $(TARGET): $(TARGET)-syms
diff --git a/xen/arch/riscv/early_printk.c b/xen/arch/riscv/early_printk.c
index 60742a042d..610c814f54 100644
--- a/xen/arch/riscv/early_printk.c
+++ b/xen/arch/riscv/early_printk.c
@@ -40,171 +40,3 @@ void early_printk(const char *str)
 str++;
 }
 }
-
-/*
- * The following #if 1 ... #endif should be removed after printk
- * and related stuff are ready.
- */
-#if 1
-
-#include 
-#include 
-
-/**
- * strlen - Find the length of a string
- * @s: The string to be sized
- */
-size_t (strlen)(const char * s)
-{
-const char *sc;
-
-for (sc = s; *sc != '\0'; ++sc)
-/* nothing */;
-return sc - s;
-}
-
-/**
- * memcpy - Copy one area of memory to another
- * @dest: Where to copy to
- * @src: Where to copy from
- * @count: The size of the area.
- *
- * You should not use this function to access IO space, use memcpy_toio()
- * or memcpy_fromio() instead.
- */
-void *(memcpy)(void *dest, const void *src, size_t count)
-{
-char *tmp = (char *) dest, *s = (char *) src;
-
-while (count--)
-*tmp++ = *s++;
-
-return dest;
-}
-
-int vsnprintf(char* str, size_t size, const char* format, va_list args)
-{
-size_t i = 0; /* Current position in the output string */
-size_t written = 0; /* Total number of characters written */
-char* dest = str;
-
-while ( format[i] != '\0' && written < size - 1 )
-{
-if ( format[i] == '%' )
-{
-i++;
-
-if ( format[i] == '\0' )
-break;
-
-if ( format[i] == '%' )
-{
-if ( written < size - 1 )
-{
-dest[written] = '%';
-written++;
-}
-i++;
-continue;
-}
-
-/*
- * Handle format specifiers.
- * For simplicity, only %s and %d are implemented here.
- */
-
-if ( format[i] == 's' )
-{
-char* arg = va_arg(args, char*);
-size_t arglen = strlen(arg);
-
-size_t remaining = size - written - 1;
-
-if ( arglen > remaining )
-arglen = remaining;
-
-memcpy(dest + written, arg, arglen);
-
-written += arglen;
-i++;
-}
-else if ( format[i] == 'd' )
-{
-int arg = va_arg(args, int);
-
-/* Convert the integer to string representation */
-char numstr[32]; /* Assumes a maximum of 32 digits */
-int numlen = 0;
-int num = arg;
-size_t remaining;
-
-if ( arg < 0 )
-{
-if ( written < size - 1 )
-{
-dest[written] = '-';
-written++;
-}
-
-num = -arg;
-}
-
-do
-{
-numstr[numlen] = '0' + num % 10;
-num = num / 10;
-numlen++;
-} while ( num > 0 );
-
-/* Reverse the string */
-for (int j = 0; j < numlen / 2; j++)
-{
-char tmp = numstr[j];
-numstr[j] = numstr[numlen - 1 - j];
-numstr[numlen - 1 - j] = tmp;
-}
-
-remaining = size - written - 1;
-
-if ( numlen > remaining )
-numlen = remaining;
-
-memcpy(dest + written, numstr, numlen);
-
-written += numlen;
-i++;
-}
-}
-else
-{
-if ( written < size - 1 )
-{
-dest[written] =

[PATCH v1 52/57] xen: add necessary headers to common to build full Xen for RISC-V

2023-08-16 Thread Oleksii Kurochko

Mostly patch was taken from the PPC patch series so can be skipped
during review:

https://lore.kernel.org/xen-devel/2c9eb4fc175a1bdd21293f2e2611d8e21991636d.1691016993.git.sanasta...@raptorengineering.com/#Z31xen:common:symbols.c

Signed-off-by: Oleksii Kurochko 
---
 xen/common/memory.c  | 1 +
 xen/common/symbols.c | 1 +
 xen/include/xen/domain.h | 1 +
 xen/include/xen/iommu.h  | 1 +
 xen/include/xen/sched.h  | 1 +
 5 files changed, 5 insertions(+)

diff --git a/xen/common/memory.c b/xen/common/memory.c
index b1dcbaf551..fa165ebc14 100644
--- a/xen/common/memory.c
+++ b/xen/common/memory.c
@@ -28,6 +28,7 @@
 #include 
 #include 
 #include 
+#include 
 #include 
 #include 
 
diff --git a/xen/common/symbols.c b/xen/common/symbols.c
index 9377f41424..691e617925 100644
--- a/xen/common/symbols.c
+++ b/xen/common/symbols.c
@@ -19,6 +19,7 @@
 #include 
 #include 
 #include 
+#include 
 
 #ifdef SYMBOLS_ORIGIN
 extern const unsigned int symbols_offsets[];
diff --git a/xen/include/xen/domain.h b/xen/include/xen/domain.h
index d35af34841..767127b440 100644
--- a/xen/include/xen/domain.h
+++ b/xen/include/xen/domain.h
@@ -4,6 +4,7 @@
 
 #include 
 
+#include 
 #include 
 #include 
 #include 
diff --git a/xen/include/xen/iommu.h b/xen/include/xen/iommu.h
index 110693c59f..7368df9138 100644
--- a/xen/include/xen/iommu.h
+++ b/xen/include/xen/iommu.h
@@ -24,6 +24,7 @@
 #include 
 #include 
 #include 
+#include 
 #include 
 #include 
 #include 
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index b4f43cd410..d8c8dd85a6 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -21,6 +21,7 @@
 #include 
 #include 
 #include 
+#include 
 #include 
 #include 
 #include 
-- 
2.41.0

[PATCH v1 27/57] xen/riscv: introduce cmpxchg.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/cmpxchg.h | 373 +++
 1 file changed, 373 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/cmpxchg.h

diff --git a/xen/arch/riscv/include/asm/cmpxchg.h 
b/xen/arch/riscv/include/asm/cmpxchg.h
new file mode 100644
index 00..8660ecd287
--- /dev/null
+++ b/xen/arch/riscv/include/asm/cmpxchg.h
@@ -0,0 +1,373 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2014 Regents of the University of California */
+
+#ifndef _ASM_RISCV_CMPXCHG_H
+#define _ASM_RISCV_CMPXCHG_H
+
+#include 
+#include 
+#include 
+
+#define __xchg_relaxed(ptr, new, size) \
+({ \
+   __typeof__(ptr) __ptr = (ptr);  \
+   __typeof__(new) __new = (new);  \
+   __typeof__(*(ptr)) __ret;   \
+   switch (size) { \
+   case 4: \
+   __asm__ __volatile__ (  \
+   "   amoswap.w %0, %2, %1\n" \
+   : "=r" (__ret), "+A" (*__ptr)   \
+   : "r" (__new)   \
+   : "memory");\
+   break;  \
+   case 8: \
+   __asm__ __volatile__ (  \
+   "   amoswap.d %0, %2, %1\n" \
+   : "=r" (__ret), "+A" (*__ptr)   \
+   : "r" (__new)   \
+   : "memory");\
+   break;  \
+   default:\
+   ASSERT_UNREACHABLE();   \
+   }   \
+   __ret;  \
+})
+
+#define xchg_relaxed(ptr, x)   \
+({ \
+   __typeof__(*(ptr)) _x_ = (x);   \
+   (__typeof__(*(ptr))) __xchg_relaxed((ptr),  \
+   _x_, sizeof(*(ptr)));   \
+})
+
+#define __xchg_acquire(ptr, new, size) \
+({ \
+   __typeof__(ptr) __ptr = (ptr);  \
+   __typeof__(new) __new = (new);  \
+   __typeof__(*(ptr)) __ret;   \
+   switch (size) { \
+   case 4: \
+   __asm__ __volatile__ (  \
+   "   amoswap.w %0, %2, %1\n" \
+   RISCV_ACQUIRE_BARRIER   \
+   : "=r" (__ret), "+A" (*__ptr)   \
+   : "r" (__new)   \
+   : "memory");\
+   break;  \
+   case 8: \
+   __asm__ __volatile__ (  \
+   "   amoswap.d %0, %2, %1\n" \
+   RISCV_ACQUIRE_BARRIER   \
+   : "=r" (__ret), "+A" (*__ptr)   \
+   : "r" (__new)   \
+   : "memory");\
+   break;  \
+   default:\
+   ASSERT_UNREACHABLE();   \
+   }   \
+   __ret;  \
+})
+
+#define xchg_acquire(ptr, x)

[PATCH v1 40/57] xen/riscv: introduce asm/p2m.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/p2m.h | 105 +++
 1 file changed, 105 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/p2m.h

diff --git a/xen/arch/riscv/include/asm/p2m.h b/xen/arch/riscv/include/asm/p2m.h
new file mode 100644
index 00..993aec6d2c
--- /dev/null
+++ b/xen/arch/riscv/include/asm/p2m.h
@@ -0,0 +1,105 @@
+#ifndef __ASM_RISCV_P2M_H__
+#define __ASM_RISCV_P2M_H__
+
+#include 
+
+#define paddr_bits PADDR_BITS
+
+/*
+ * List of possible type for each page in the p2m entry.
+ * The number of available bit per page in the pte for this purpose is 4 bits.
+ * So it's possible to only have 16 fields. If we run out of value in the
+ * future, it's possible to use higher value for pseudo-type and don't store
+ * them in the p2m entry.
+ */
+typedef enum {
+p2m_invalid = 0,/* Nothing mapped here */
+p2m_ram_rw, /* Normal read/write guest RAM */
+p2m_ram_ro, /* Read-only; writes are silently dropped */
+p2m_mmio_direct_dev,/* Read/write mapping of genuine Device MMIO area */
+p2m_mmio_direct_nc, /* Read/write mapping of genuine MMIO area 
non-cacheable */
+p2m_mmio_direct_c,  /* Read/write mapping of genuine MMIO area cacheable */
+p2m_map_foreign_rw, /* Read/write RAM pages from foreign domain */
+p2m_map_foreign_ro, /* Read-only RAM pages from foreign domain */
+p2m_grant_map_rw,   /* Read/write grant mapping */
+p2m_grant_map_ro,   /* Read-only grant mapping */
+/* The types below are only used to decide the page attribute in the P2M */
+p2m_iommu_map_rw,   /* Read/write iommu mapping */
+p2m_iommu_map_ro,   /* Read-only iommu mapping */
+p2m_max_real_type,  /* Types after this won't be store in the p2m */
+} p2m_type_t;
+
+#include 
+
+static inline int get_page_and_type(struct page_info *page,
+struct domain *domain,
+unsigned long type)
+{
+BUG();
+return 1;
+}
+
+/* Look up a GFN and take a reference count on the backing page. */
+typedef unsigned int p2m_query_t;
+#define P2M_ALLOC(1u<<0)   /* Populate PoD and paged-out entries */
+#define P2M_UNSHARE  (1u<<1)   /* Break CoW sharing */
+
+static inline struct page_info *get_page_from_gfn(
+struct domain *d, unsigned long gfn, p2m_type_t *t, p2m_query_t q)
+{
+BUG();
+return NULL;
+}
+
+static inline void memory_type_changed(struct domain *d)
+{
+BUG();
+}
+
+
+static inline int guest_physmap_mark_populate_on_demand(struct domain *d, 
unsigned long gfn,
+unsigned int order)
+{
+BUG();
+return 1;
+}
+
+static inline int guest_physmap_add_entry(struct domain *d,
+gfn_t gfn,
+mfn_t mfn,
+unsigned long page_order,
+p2m_type_t t)
+{
+BUG();
+return 1;
+}
+
+/* Untyped version for RAM only, for compatibility */
+static inline int __must_check
+guest_physmap_add_page(struct domain *d, gfn_t gfn, mfn_t mfn,
+   unsigned int page_order)
+{
+return guest_physmap_add_entry(d, gfn, mfn, page_order, p2m_ram_rw);
+}
+
+static inline mfn_t gfn_to_mfn(struct domain *d, gfn_t gfn)
+{
+BUG();
+return _mfn(0);
+}
+
+static inline bool arch_acquire_resource_check(struct domain *d)
+{
+/*
+ * The reference counting of foreign entries in set_foreign_p2m_entry()
+ * is supported on RISCV.
+ */
+return true;
+}
+
+static inline void p2m_altp2m_check(struct vcpu *v, uint16_t idx)
+{
+/* Not supported on RISCV. */
+}
+
+#endif /* __ASM_RISCV_P2M_H__ */
\ No newline at end of file
-- 
2.41.0

[PATCH v1 38/57] xen/riscv: introduce asm/monitor.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/monitor.h | 53 
 1 file changed, 53 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/monitor.h

diff --git a/xen/arch/riscv/include/asm/monitor.h 
b/xen/arch/riscv/include/asm/monitor.h
new file mode 100644
index 00..fb7ef6639d
--- /dev/null
+++ b/xen/arch/riscv/include/asm/monitor.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * include/asm-RISCV/monitor.h
+ *
+ * Arch-specific monitor_op domctl handler.
+ *
+ * Copyright (c) 2015 Tamas K Lengyel (ta...@tklengyel.com)
+ * Copyright (c) 2016, Bitdefender S.R.L.
+ *
+ */
+
+#ifndef __ASM_RISCV_MONITOR_H__
+#define __ASM_RISCV_MONITOR_H__
+
+#include 
+#include 
+
+static inline
+void arch_monitor_allow_userspace(struct domain *d, bool allow_userspace)
+{
+}
+
+static inline
+int arch_monitor_domctl_op(struct domain *d, struct xen_domctl_monitor_op *mop)
+{
+/* No arch-specific monitor ops on RISCV. */
+return -EOPNOTSUPP;
+}
+
+int arch_monitor_domctl_event(struct domain *d,
+  struct xen_domctl_monitor_op *mop);
+
+static inline
+int arch_monitor_init_domain(struct domain *d)
+{
+/* No arch-specific domain initialization on RISCV. */
+return 0;
+}
+
+static inline
+void arch_monitor_cleanup_domain(struct domain *d)
+{
+/* No arch-specific domain cleanup on RISCV. */
+}
+
+static inline uint32_t arch_monitor_get_capabilities(struct domain *d)
+{
+uint32_t capabilities = 0;
+
+return capabilities;
+}
+
+#endif /* __ASM_RISCV_MONITOR_H__ */
-- 
2.41.0

[PATCH v1 29/56] xxen/riscv: introduce asm/hardirq.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/hardirq.h | 26 ++
 1 file changed, 26 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/hardirq.h

diff --git a/xen/arch/riscv/include/asm/hardirq.h 
b/xen/arch/riscv/include/asm/hardirq.h
new file mode 100644
index 00..467421849a
--- /dev/null
+++ b/xen/arch/riscv/include/asm/hardirq.h
@@ -0,0 +1,26 @@
+#ifndef __ASM_RISCV_HARDIRQ_H
+#define __ASM_RISCV_HARDIRQ_H
+
+#include 
+
+typedef struct {
+unsigned long __softirq_pending;
+unsigned int __local_irq_count;
+} __cacheline_aligned irq_cpustat_t;
+
+#include /* Standard mappings for irq_cpustat_t above */
+
+#define in_irq() (local_irq_count(smp_processor_id()) != 0)
+
+#define irq_enter() (local_irq_count(smp_processor_id())++)
+#define irq_exit()  (local_irq_count(smp_processor_id())--)
+
+#endif /* __ASM_RISCV_HARDIRQ_H */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 49/57] xen/riscv: add minimal stuff to asm/processor.h to build full Xen

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/processor.h | 15 +++
 1 file changed, 15 insertions(+)

diff --git a/xen/arch/riscv/include/asm/processor.h 
b/xen/arch/riscv/include/asm/processor.h
index 6db681d805..b6218a00a7 100644
--- a/xen/arch/riscv/include/asm/processor.h
+++ b/xen/arch/riscv/include/asm/processor.h
@@ -12,6 +12,9 @@
 
 #ifndef __ASSEMBLY__
 
+/* TODO: need to be implemeted */
+#define get_processor_id() 0
+
 /* On stack VCPU state */
 struct cpu_user_regs
 {
@@ -53,6 +56,18 @@ struct cpu_user_regs
 unsigned long pregs;
 };
 
+/* TODO: need to implement */
+#define cpu_to_core(_cpu)   (0)
+#define cpu_to_socket(_cpu) (0)
+
+static inline void cpu_relax(void)
+{
+   int dummy;
+   /* In lieu of a halt instruction, induce a long-latency stall. */
+   __asm__ __volatile__ ("div %0, %0, zero" : "=r" (dummy));
+   barrier();
+}
+
 static inline void wfi(void)
 {
 __asm__ __volatile__ ("wfi");
-- 
2.41.0

[PATCH v1 48/57] xen/riscv: add minimal stuff to asm/page.h to build full Xen

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/page.h | 21 +
 1 file changed, 21 insertions(+)

diff --git a/xen/arch/riscv/include/asm/page.h 
b/xen/arch/riscv/include/asm/page.h
index 95074e29b3..abbae75aaf 100644
--- a/xen/arch/riscv/include/asm/page.h
+++ b/xen/arch/riscv/include/asm/page.h
@@ -6,6 +6,7 @@
 #ifndef __ASSEMBLY__
 
 #include 
+#include 
 #include 
 
 #include 
@@ -32,6 +33,9 @@
 #define PTE_LEAF_DEFAULT(PTE_VALID | PTE_READABLE | PTE_WRITABLE)
 #define PTE_TABLE   (PTE_VALID)
 
+/* TODO */
+#define PAGE_HYPERVISOR 0
+
 /* Calculate the offsets into the pagetables for a given VA */
 #define pt_linear_offset(lvl, va)   ((va) >> XEN_PT_LEVEL_SHIFT(lvl))
 
@@ -46,6 +50,9 @@ typedef struct {
 #endif
 } pte_t;
 
+#define pfn_to_paddr(pfn) ((paddr_t)(pfn) << PAGE_SHIFT)
+#define paddr_to_pfn(pa)  ((unsigned long)((pa) >> PAGE_SHIFT))
+
 static inline pte_t paddr_to_pte(paddr_t paddr,
  unsigned int permissions)
 {
@@ -62,6 +69,20 @@ static inline bool pte_is_valid(pte_t p)
 return p.pte & PTE_VALID;
 }
 
+static inline void invalidate_icache(void)
+{
+BUG();
+}
+
+#define clear_page(page) memset((void *)(page), 0, PAGE_SIZE)
+#define copy_page(dp, sp) memcpy(dp, sp, PAGE_SIZE)
+
+/* TODO: Flush the dcache for an entire page. */
+static inline void flush_page_to_ram(unsigned long mfn, bool sync_icache)
+{
+BUG();
+}
+
 #endif /* __ASSEMBLY__ */
 
 #endif /* _ASM_RISCV_PAGE_H */
-- 
2.41.0

[PATCH v1 44/57] xen/riscv: introduce asm/vm_event.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/vm_event.h | 52 +++
 1 file changed, 52 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/vm_event.h

diff --git a/xen/arch/riscv/include/asm/vm_event.h 
b/xen/arch/riscv/include/asm/vm_event.h
new file mode 100644
index 00..4cae80840a
--- /dev/null
+++ b/xen/arch/riscv/include/asm/vm_event.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * vm_event.h: architecture specific vm_event handling routines
+ *
+ * Copyright (c) 2015 Tamas K Lengyel (ta...@tklengyel.com)
+ */
+
+#ifndef __ASM_RISCV_VM_EVENT_H__
+#define __ASM_RISCV_VM_EVENT_H__
+
+#include 
+#include 
+#include 
+
+static inline int vm_event_init_domain(struct domain *d)
+{
+/* Nothing to do. */
+return 0;
+}
+
+static inline void vm_event_cleanup_domain(struct domain *d)
+{
+memset(>monitor, 0, sizeof(d->monitor));
+}
+
+static inline void vm_event_toggle_singlestep(struct domain *d, struct vcpu *v,
+  vm_event_response_t *rsp)
+{
+/* Not supported on RISCV. */
+}
+
+static inline
+void vm_event_register_write_resume(struct vcpu *v, vm_event_response_t *rsp)
+{
+/* Not supported on RISCV. */
+}
+
+static inline
+void vm_event_emulate_check(struct vcpu *v, vm_event_response_t *rsp)
+{
+/* Not supported on RISCV. */
+}
+
+static inline
+void vm_event_sync_event(struct vcpu *v, bool value)
+{
+/* Not supported on RISCV. */
+}
+
+void vm_event_reset_vmtrace(struct vcpu *v);
+
+#endif /* __ASM_RISCV_VM_EVENT_H__ */
-- 
2.41.0

[PATCH v1 47/57] xen/riscv: add required things to asm/current.h

2023-08-16 Thread Oleksii Kurochko

Add minimal requied things to be able to build full Xen.

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/current.h | 17 +
 1 file changed, 17 insertions(+)

diff --git a/xen/arch/riscv/include/asm/current.h 
b/xen/arch/riscv/include/asm/current.h
index d84f15dc50..d03d172f14 100644
--- a/xen/arch/riscv/include/asm/current.h
+++ b/xen/arch/riscv/include/asm/current.h
@@ -3,6 +3,21 @@
 #ifndef __ASM_CURRENT_H
 #define __ASM_CURRENT_H
 
+#include 
+
+#ifndef __ASSEMBLY__
+
+struct vcpu;
+
+/* Which VCPU is "current" on this PCPU. */
+DECLARE_PER_CPU(struct vcpu *, curr_vcpu);
+
+#define current(this_cpu(curr_vcpu))
+#define set_current(vcpu)  do { current = (vcpu); } while (0)
+#define get_cpu_current(cpu)  (per_cpu(curr_vcpu, cpu))
+
+#define guest_cpu_user_regs() (0)
+
 #define switch_stack_and_jump(stack, fn) do {   \
 asm volatile (  \
 "mv sp, %0\n"   \
@@ -10,4 +25,6 @@
 unreachable();  \
 } while ( false )
 
+#endif /* __ASSEMBLY__ */
+
 #endif /* __ASM_CURRENT_H */
-- 
2.41.0

[PATCH v1 36/57] xen/riscv: introduce asm/guest_access.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/guest_access.h | 29 +++
 1 file changed, 29 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/guest_access.h

diff --git a/xen/arch/riscv/include/asm/guest_access.h 
b/xen/arch/riscv/include/asm/guest_access.h
new file mode 100644
index 00..7be5c4509d
--- /dev/null
+++ b/xen/arch/riscv/include/asm/guest_access.h
@@ -0,0 +1,29 @@
+#ifndef __ASM_RISCV_GUEST_ACCESS_H__
+#define __ASM_RISCV_GUEST_ACCESS_H__
+
+#include 
+
+unsigned long raw_copy_to_guest(void *to, const void *from, unsigned len);
+unsigned long raw_copy_from_guest(void *to, const void *from, unsigned len);
+
+#define __raw_copy_to_guest raw_copy_to_guest
+#define __raw_copy_from_guest raw_copy_from_guest
+
+#define guest_handle_okay(hnd, nr) (1)
+#define guest_handle_subrange_okay(hnd, first, last) (1)
+
+struct domain;
+unsigned long copy_to_guest_phys(struct domain *d,
+ paddr_t gpa,
+ void *buf,
+ unsigned int len);
+
+#endif /* __ASM_RISCV_GUEST_ACCESS_H__ */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 41/57] xen/riscv: introduce asm/regs.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/regs.h | 27 +++
 1 file changed, 27 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/regs.h

diff --git a/xen/arch/riscv/include/asm/regs.h 
b/xen/arch/riscv/include/asm/regs.h
new file mode 100644
index 00..33ae759a3e
--- /dev/null
+++ b/xen/arch/riscv/include/asm/regs.h
@@ -0,0 +1,27 @@
+#ifndef __ARM_RISCV_REGS_H__
+#define __ARM_RISCV_REGS_H__
+
+#ifndef __ASSEMBLY__
+
+#include 
+#include 
+
+#define hyp_mode(r) (0)
+
+static inline bool guest_mode(const struct cpu_user_regs *r)
+{
+BUG();
+}
+
+#endif
+
+
+#endif /* __ARM_RISCV_REGS_H__ */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 50/57] xen/riscv: add minimal stuff to asm/smp.h to build full Xen

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/smp.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/xen/arch/riscv/include/asm/smp.h b/xen/arch/riscv/include/asm/smp.h
index cc8dd18254..a7b4f94ce4 100644
--- a/xen/arch/riscv/include/asm/smp.h
+++ b/xen/arch/riscv/include/asm/smp.h
@@ -17,4 +17,7 @@ DECLARE_PER_CPU(cpumask_var_t, cpu_core_mask);
  */
 #define park_offline_cpus false
 
+/* TODO: need to be implemeted */
+#define smp_processor_id() (0)
+
 #endif
\ No newline at end of file
-- 
2.41.0

[PATCH v1 29/57] xen/riscv: introduce asm/hardirq.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/hardirq.h | 26 ++
 1 file changed, 26 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/hardirq.h

diff --git a/xen/arch/riscv/include/asm/hardirq.h 
b/xen/arch/riscv/include/asm/hardirq.h
new file mode 100644
index 00..467421849a
--- /dev/null
+++ b/xen/arch/riscv/include/asm/hardirq.h
@@ -0,0 +1,26 @@
+#ifndef __ASM_RISCV_HARDIRQ_H
+#define __ASM_RISCV_HARDIRQ_H
+
+#include 
+
+typedef struct {
+unsigned long __softirq_pending;
+unsigned int __local_irq_count;
+} __cacheline_aligned irq_cpustat_t;
+
+#include /* Standard mappings for irq_cpustat_t above */
+
+#define in_irq() (local_irq_count(smp_processor_id()) != 0)
+
+#define irq_enter() (local_irq_count(smp_processor_id())++)
+#define irq_exit()  (local_irq_count(smp_processor_id())--)
+
+#endif /* __ASM_RISCV_HARDIRQ_H */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 55/57] xen/riscv: enable full Xen build

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/Makefile | 16 +++-
 xen/arch/riscv/arch.mk  |  4 
 xen/arch/riscv/configs/tiny64_defconfig | 19 ++-
 xen/arch/riscv/stubs.c  | 18 --
 4 files changed, 33 insertions(+), 24 deletions(-)

diff --git a/xen/arch/riscv/Makefile b/xen/arch/riscv/Makefile
index 50c09469a0..9c02cb0ccf 100644
--- a/xen/arch/riscv/Makefile
+++ b/xen/arch/riscv/Makefile
@@ -12,10 +12,24 @@ $(TARGET): $(TARGET)-syms
$(OBJCOPY) -O binary -S $< $@
 
 $(TARGET)-syms: $(objtree)/prelink.o $(obj)/xen.lds
-   $(LD) $(XEN_LDFLAGS) -T $(obj)/xen.lds -N $< $(build_id_linker) -o $@
+   $(LD) $(XEN_LDFLAGS) -T $(obj)/xen.lds -N $< \
+   $(objtree)/common/symbols-dummy.o -o $(dot-target).0
+   $(NM) -pa --format=sysv $(dot-target).0 \
+   | $(objtree)/tools/symbols $(all_symbols) --sysv --sort \
+   > $(dot-target).0.S
+   $(MAKE) $(build)=$(@D) $(dot-target).0.o
+   $(LD) $(XEN_LDFLAGS) -T $(obj)/xen.lds -N $< \
+   $(dot-target).0.o -o $(dot-target).1
+   $(NM) -pa --format=sysv $(dot-target).1 \
+   | $(objtree)/tools/symbols $(all_symbols) --sysv --sort \
+   > $(dot-target).1.S
+   $(MAKE) $(build)=$(@D) $(dot-target).1.o
+   $(LD) $(XEN_LDFLAGS) -T $(obj)/xen.lds -N $< $(build_id_linker) \
+   $(dot-target).1.o -o $@
$(NM) -pa --format=sysv $@ \
| $(objtree)/tools/symbols --all-symbols --xensyms --sysv 
--sort \
> $@.map
+   rm -f $(@D)/.$(@F).[0-9]*
 
 $(obj)/xen.lds: $(src)/xen.lds.S FORCE
$(call if_changed_dep,cpp_lds_S)
diff --git a/xen/arch/riscv/arch.mk b/xen/arch/riscv/arch.mk
index 8403f96b6f..12b1673fae 100644
--- a/xen/arch/riscv/arch.mk
+++ b/xen/arch/riscv/arch.mk
@@ -13,7 +13,3 @@ riscv-march-$(CONFIG_RISCV_ISA_C)   := $(riscv-march-y)c
 # -mcmodel=medlow would force Xen into the lower half.
 
 CFLAGS += -march=$(riscv-march-y) -mstrict-align -mcmodel=medany
-
-# TODO: Drop override when more of the build is working
-override ALL_OBJS-y = arch/$(SRCARCH)/built_in.o
-override ALL_LIBS-y =
diff --git a/xen/arch/riscv/configs/tiny64_defconfig 
b/xen/arch/riscv/configs/tiny64_defconfig
index 3c9a2ff941..4b488180ae 100644
--- a/xen/arch/riscv/configs/tiny64_defconfig
+++ b/xen/arch/riscv/configs/tiny64_defconfig
@@ -6,7 +6,24 @@
 # CONFIG_HYPFS is not set
 # CONFIG_GRANT_TABLE is not set
 # CONFIG_SPECULATIVE_HARDEN_ARRAY is not set
-
+# CONFIG_ARGO is not set
+# CONFIG_HYPFS_CONFIG is not set
+# CONFIG_CORE_PARKING is not set
+# CONFIG_DEBUG_TRACE is not set
+# CONFIG_IOREQ_SERVER is not set
+# CONFIG_CRASH_DEBUG is not setz
+# CONFIG_KEXEC is not set
+# CONFIG_LIVEPATCH is not set
+# CONFIG_MEM_ACCESS is not set
+# CONFIG_NUMA is not set
+# CONFIG_PERF_COUNTERS is not set
+# CONFIG_HAS_PMAP is not set
+# CONFIG_TRACEBUFFER is not set
+# CONFIG_XENOPROF is not set
+# CONFIG_COMPAT is not set
+# CONFIG_COVERAGE is not set
+# CONFIG_UBSAN is not set
+# CONFIG_NEEDS_LIBELF is not set
 CONFIG_RISCV_64=y
 CONFIG_DEBUG=y
 CONFIG_DEBUG_INFO=y
diff --git a/xen/arch/riscv/stubs.c b/xen/arch/riscv/stubs.c
index 3232039bc2..5f3040965e 100644
--- a/xen/arch/riscv/stubs.c
+++ b/xen/arch/riscv/stubs.c
@@ -417,21 +417,3 @@ int arch_get_paging_mempool_size(struct domain *d, 
uint64_t *size)
 {
 BUG();
 }
-
-/* need for build until common code starts be buildable */
-unsigned long __read_mostly max_page;
-
-void printk(const char *fmt, ...)
-{
-BUG();
-}
-
-void cf_check irq_actor_none(struct irq_desc *desc)
-{
-BUG();
-}
-
-unsigned int cf_check irq_startup_none(struct irq_desc *desc)
-{
-return 0;
-}
\ No newline at end of file
-- 
2.41.0

[PATCH v1 26/57] xen/riscv: introduce asm/atomic.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/atomic.h | 375 
 1 file changed, 375 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/atomic.h

diff --git a/xen/arch/riscv/include/asm/atomic.h 
b/xen/arch/riscv/include/asm/atomic.h
new file mode 100644
index 00..d4849cf282
--- /dev/null
+++ b/xen/arch/riscv/include/asm/atomic.h
@@ -0,0 +1,375 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Taken and modified from Linux.
+ * 
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Copyright (C) 2012 Regents of the University of California
+ * Copyright (C) 2017 SiFive
+ * Copyright (C) 2021 Vates SAS
+ */
+
+#ifndef _ASM_RISCV_ATOMIC_H
+#define _ASM_RISCV_ATOMIC_H
+
+#include 
+#include 
+#include 
+#include 
+#include 
+
+void __bad_atomic_size(void);
+
+static always_inline void read_atomic_size(const volatile void *p,
+   void *res,
+   unsigned int size)
+{
+switch ( size ) {
+case 1: *(uint8_t *)res = readb((uint8_t *)p); break;
+case 2: *(uint16_t *)res = readw((uint16_t *)p); break;
+case 4: *(uint32_t *)res = readl((uint32_t *)p); break;
+case 8: *(uint32_t *)res  = readq((uint64_t *)p); break;
+default: __bad_atomic_size(); break;
+}
+}
+
+#define read_atomic(p) ({   \
+union { typeof(*p) val; char c[0]; } x_;\
+read_atomic_size(p, x_.c, sizeof(*p));  \
+x_.val; \
+})
+
+
+#define write_atomic(p, x) ({   \
+typeof(*p) __x = (x);   \
+switch ( sizeof(*p) ) { \
+case 1: writeb((uint8_t)__x,  (uint8_t *)  p); break;  \
+case 2: writew((uint16_t)__x, (uint16_t *) p); break;  \
+case 4: writel((uint32_t)__x, (uint32_t *) p); break;  \
+case 8: writeq((uint64_t)__x, (uint64_t *) p); break;  \
+default: __bad_atomic_size(); break;\
+}   \
+__x;\
+})
+
+/* TODO: Fix this */
+#define add_sized(p, x) ({  \
+typeof(*(p)) __x = (x); \
+switch ( sizeof(*(p)) ) \
+{   \
+case 1: writeb(read_atomic(p) + __x, (uint8_t *)(p)); break;\
+case 2: writew(read_atomic(p) + __x, (uint16_t *)(p)); break;   \
+case 4: writel(read_atomic(p) + __x, (uint32_t *)(p)); break;   \
+default: __bad_atomic_size(); break;\
+}   \
+})
+
+/*
+ *  __unqual_scalar_typeof(x) - Declare an unqualified scalar type, leaving
+ *   non-scalar types unchanged.
+ *
+ * Prefer C11 _Generic for better compile-times and simpler code. Note: 'char'
+ * is not type-compatible with 'signed char', and we define a separate case.
+ */
+#define __scalar_type_to_expr_cases(type)   \
+unsigned type:  (unsigned type)0,   \
+signed type:(signed type)0
+
+#define __unqual_scalar_typeof(x) typeof(   \
+_Generic((x),   \
+char:  (char)0, \
+__scalar_type_to_expr_cases(char),  \
+__scalar_type_to_expr_cases(short), \
+__scalar_type_to_expr_cases(int),   \
+__scalar_type_to_expr_cases(long),  \
+__scalar_type_to_expr_cases(long long), \
+default: (x)))
+
+#define READ_ONCE(x)  (*(const volatile __unqual_scalar_typeof(x) *)&(x))
+#define WRITE_ONCE(x, val)  \
+do {\
+*(volatile typeof(x) *)&(x) = (val);\
+} while (0)
+
+#define __atomic_acquire_fence()   \
+   __asm__ __volatile__(RISCV_ACQUIRE_BARRIER "" ::: "memory")
+
+#define __atomic_release_fence()   \
+   __asm__ __volatile__(RISCV_RELEASE_BARRIER "" ::: "memory");
+
+static inline int atomic_read(const atomic_t *v)
+{
+   return READ_ONCE(v->counter);
+}
+
+static inline int _atomic_read(atomic_t v)
+{
+return v.counter;
+}
+
+static inline void atomic_set(atomic_t *v, int i)
+{
+   WRITE_ONCE(v->counter, i);
+}
+
+static inline void

[PATCH v1 34/57] xen/riscv: introduce asm/delay.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/delay.h | 17 +
 1 file changed, 17 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/delay.h

diff --git a/xen/arch/riscv/include/asm/delay.h 
b/xen/arch/riscv/include/asm/delay.h
new file mode 100644
index 00..40370e381a
--- /dev/null
+++ b/xen/arch/riscv/include/asm/delay.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2009 Chen Liqin 
+ * Copyright (C) 2016 Regents of the University of California
+ */
+
+#ifndef _ASM_RISCV_DELAY_H
+#define _ASM_RISCV_DELAY_H
+
+#include 
+
+static inline void udelay(unsigned long usecs)
+{
+BUG();
+}
+
+#endif /* _ASM_RISCV_DELAY_H */
-- 
2.41.0

[PATCH v1 28/57] xen/riscv: introduce asm/io.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/io.h | 132 
 1 file changed, 132 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/io.h

diff --git a/xen/arch/riscv/include/asm/io.h b/xen/arch/riscv/include/asm/io.h
new file mode 100644
index 00..8c83c9689b
--- /dev/null
+++ b/xen/arch/riscv/include/asm/io.h
@@ -0,0 +1,132 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * {read,write}{b,w,l,q} based on arch/arm64/include/asm/io.h
+ *   which was based on arch/arm/include/io.h
+ *
+ * Copyright (C) 1996-2000 Russell King
+ * Copyright (C) 2012 ARM Ltd.
+ * Copyright (C) 2014 Regents of the University of California
+ */
+
+#ifndef _ASM_RISCV_IO_H
+#define _ASM_RISCV_IO_H
+
+#include 
+
+/*
+ * The RISC-V ISA doesn't yet specify how to query or modify PMAs, so we can't
+ * change the properties of memory regions.  This should be fixed by the
+ * upcoming platform spec.
+ */
+#define ioremap_nocache(addr, size) ioremap((addr), (size))
+#define ioremap_wc(addr, size) ioremap((addr), (size))
+#define ioremap_wt(addr, size) ioremap((addr), (size))
+
+/* Generic IO read/write.  These perform native-endian accesses. */
+#define __raw_writeb __raw_writeb
+static inline void __raw_writeb(u8 val, volatile void __iomem *addr)
+{
+   asm volatile("sb %0, 0(%1)" : : "r" (val), "r" (addr));
+}
+
+#define __raw_writew __raw_writew
+static inline void __raw_writew(u16 val, volatile void __iomem *addr)
+{
+   asm volatile("sh %0, 0(%1)" : : "r" (val), "r" (addr));
+}
+
+#define __raw_writel __raw_writel
+static inline void __raw_writel(u32 val, volatile void __iomem *addr)
+{
+   asm volatile("sw %0, 0(%1)" : : "r" (val), "r" (addr));
+}
+
+#ifdef CONFIG_64BIT
+#define __raw_writeq __raw_writeq
+static inline void __raw_writeq(u64 val, volatile void __iomem *addr)
+{
+   asm volatile("sd %0, 0(%1)" : : "r" (val), "r" (addr));
+}
+#endif
+
+#define __raw_readb __raw_readb
+static inline u8 __raw_readb(const volatile void __iomem *addr)
+{
+   u8 val;
+
+   asm volatile("lb %0, 0(%1)" : "=r" (val) : "r" (addr));
+   return val;
+}
+
+#define __raw_readw __raw_readw
+static inline u16 __raw_readw(const volatile void __iomem *addr)
+{
+   u16 val;
+
+   asm volatile("lh %0, 0(%1)" : "=r" (val) : "r" (addr));
+   return val;
+}
+
+#define __raw_readl __raw_readl
+static inline u32 __raw_readl(const volatile void __iomem *addr)
+{
+   u32 val;
+
+   asm volatile("lw %0, 0(%1)" : "=r" (val) : "r" (addr));
+   return val;
+}
+
+#ifdef CONFIG_64BIT
+#define __raw_readq __raw_readq
+static inline u64 __raw_readq(const volatile void __iomem *addr)
+{
+   u64 val;
+
+   asm volatile("ld %0, 0(%1)" : "=r" (val) : "r" (addr));
+   return val;
+}
+#endif
+
+/*
+ * Unordered I/O memory access primitives.  These are even more relaxed than
+ * the relaxed versions, as they don't even order accesses between successive
+ * operations to the I/O regions.
+ */
+#define readb_cpu(c)   ({ u8  __r = __raw_readb(c); __r; })
+#define readw_cpu(c)   ({ u16 __r = le16_to_cpu((__force 
__le16)__raw_readw(c)); __r; })
+#define readl_cpu(c)   ({ u32 __r = le32_to_cpu((__force 
__le32)__raw_readl(c)); __r; })
+
+#define writeb_cpu(v,c)((void)__raw_writeb((v),(c)))
+#define writew_cpu(v,c)((void)__raw_writew((__force 
u16)cpu_to_le16(v),(c)))
+#define writel_cpu(v,c)((void)__raw_writel((__force 
u32)cpu_to_le32(v),(c)))
+
+#ifdef CONFIG_64BIT
+#define readq_cpu(c)   ({ u64 __r = le64_to_cpu((__force 
__le64)__raw_readq(c)); __r; })
+#define writeq_cpu(v,c)((void)__raw_writeq((__force 
u64)cpu_to_le64(v),(c)))
+#endif
+
+/*
+ * I/O memory access primitives. Reads are ordered relative to any
+ * following Normal memory access. Writes are ordered relative to any prior
+ * Normal memory access.  The memory barriers here are necessary as RISC-V
+ * doesn't define any ordering between the memory space and the I/O space.
+ */
+#define __io_br()  do {} while (0)
+#define __io_ar(v) __asm__ __volatile__ ("fence i,r" : : : "memory");
+#define __io_bw()  __asm__ __volatile__ ("fence w,o" : : : "memory");
+#define __io_aw()  do { } while (0)
+
+#define readb(c)   ({ u8  __v; __io_br(); __v = readb_cpu(c); 
__io_ar(__v); __v; })
+#define readw(c)   ({ u16 __v; __io_br(); __v = readw_cpu(c); 
__io_ar(__v); __v; })
+#define readl(c)   ({ u32 __v; __io_br(); __v = readl_cpu(c); 
__io_ar(__v); __v; })
+
+#define writeb(v,c)({ __io_bw(); writeb_cpu((v),(c)); __io_aw(); })
+#define writew(v,c)({ __io_bw(); writew_cpu((v),(c)); __io_aw();

[PATCH v1 25/57] xen/riscv: introduce asm/smp.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/smp.h | 20 
 1 file changed, 20 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/smp.h

diff --git a/xen/arch/riscv/include/asm/smp.h b/xen/arch/riscv/include/asm/smp.h
new file mode 100644
index 00..cc8dd18254
--- /dev/null
+++ b/xen/arch/riscv/include/asm/smp.h
@@ -0,0 +1,20 @@
+#ifndef __ASM_RISCV_SMP_H
+#define __ASM_RISCV_SMP_H
+
+#ifndef __ASSEMBLY__
+#include 
+#include 
+#endif
+
+DECLARE_PER_CPU(cpumask_var_t, cpu_sibling_mask);
+DECLARE_PER_CPU(cpumask_var_t, cpu_core_mask);
+
+#define cpu_is_offline(cpu) unlikely(!cpu_online(cpu))
+
+/*
+ * Do we, for platform reasons, need to actually keep CPUs online when we
+ * would otherwise prefer them to be off?
+ */
+#define park_offline_cpus false
+
+#endif
\ No newline at end of file
-- 
2.41.0

[PATCH v1 53/57] xen/riscv: add minimal stuff to asm/mm.h to build full Xen

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/mm.h | 265 +++-
 1 file changed, 263 insertions(+), 2 deletions(-)

diff --git a/xen/arch/riscv/include/asm/mm.h b/xen/arch/riscv/include/asm/mm.h
index 5e3ac5cde3..1d464afec9 100644
--- a/xen/arch/riscv/include/asm/mm.h
+++ b/xen/arch/riscv/include/asm/mm.h
@@ -3,10 +3,271 @@
 #ifndef _ASM_RISCV_MM_H
 #define _ASM_RISCV_MM_H
 
+#include 
+#include 
+#include 
+
+#include 
 #include 
 
-#define pfn_to_paddr(pfn) ((paddr_t)(pfn) << PAGE_SHIFT)
-#define paddr_to_pfn(pa)  ((unsigned long)((pa) >> PAGE_SHIFT))
+#define paddr_to_pdx(pa)mfn_to_pdx(maddr_to_mfn(pa))
+#define gfn_to_gaddr(gfn)   pfn_to_paddr(gfn_x(gfn))
+#define gaddr_to_gfn(ga)_gfn(paddr_to_pfn(ga))
+#define mfn_to_maddr(mfn)   pfn_to_paddr(mfn_x(mfn))
+#define maddr_to_mfn(ma)_mfn(paddr_to_pfn(ma))
+#define vmap_to_mfn(va) maddr_to_mfn(virt_to_maddr((vaddr_t)va))
+#define vmap_to_page(va)mfn_to_page(vmap_to_mfn(va))
+#define paddr_to_pdx(pa)mfn_to_pdx(maddr_to_mfn(pa))
+#define gfn_to_gaddr(gfn)   pfn_to_paddr(gfn_x(gfn))
+#define gaddr_to_gfn(ga)_gfn(paddr_to_pfn(ga))
+#define mfn_to_maddr(mfn)   pfn_to_paddr(mfn_x(mfn))
+#define maddr_to_mfn(ma)_mfn(paddr_to_pfn(ma))
+#define vmap_to_mfn(va) maddr_to_mfn(virt_to_maddr((vaddr_t)va))
+#define vmap_to_page(va)mfn_to_page(vmap_to_mfn(va))
+
+#define virt_to_maddr(va) ((paddr_t)((vaddr_t)(va) & PADDR_MASK))
+#define maddr_to_virt(pa) ((void *)((paddr_t)(pa) | XEN_VIRT_START))
+
+/* Convert between Xen-heap virtual addresses and machine frame numbers. */
+#define __virt_to_mfn(va) (virt_to_maddr(va) >> PAGE_SHIFT)
+#define __mfn_to_virt(mfn) (maddr_to_virt((paddr_t)(mfn) << PAGE_SHIFT))
+
+/* Convert between Xen-heap virtual addresses and page-info structures. */
+static inline struct page_info *virt_to_page(const void *v)
+{
+BUG();
+return NULL;
+}
+
+/*
+ * We define non-underscored wrappers for above conversion functions.
+ * These are overriden in various source files while underscored version
+ * remain intact.
+ */
+#define virt_to_mfn(va) __virt_to_mfn(va)
+#define mfn_to_virt(mfn)__mfn_to_virt(mfn)
+
+struct page_info
+{
+/* Each frame can be threaded onto a doubly-linked list. */
+struct page_list_entry list;
+
+/* Reference count and various PGC_xxx flags and fields. */
+unsigned long count_info;
+
+/* Context-dependent fields follow... */
+union {
+/* Page is in use: ((count_info & PGC_count_mask) != 0). */
+struct {
+/* Type reference count and various PGT_xxx flags and fields. */
+unsigned long type_info;
+} inuse;
+/* Page is on a free list: ((count_info & PGC_count_mask) == 0). */
+union {
+struct {
+/*
+ * Index of the first *possibly* unscrubbed page in the buddy.
+ * One more bit than maximum possible order to accommodate
+ * INVALID_DIRTY_IDX.
+ */
+#define INVALID_DIRTY_IDX ((1UL << (MAX_ORDER + 1)) - 1)
+unsigned long first_dirty:MAX_ORDER + 1;
+
+/* Do TLBs need flushing for safety before next page use? */
+bool need_tlbflush:1;
+
+#define BUDDY_NOT_SCRUBBING0
+#define BUDDY_SCRUBBING1
+#define BUDDY_SCRUB_ABORT  2
+unsigned long scrub_state:2;
+};
+
+unsigned long val;
+} free;
+
+} u;
+
+union {
+/* Page is in use, but not as a shadow. */
+struct {
+/* Owner of this page (zero if page is anonymous). */
+struct domain *domain;
+} inuse;
+
+/* Page is on a free list. */
+struct {
+/* Order-size of the free chunk this page is the head of. */
+unsigned int order;
+} free;
+
+} v;
+
+union {
+/*
+ * Timestamp from 'TLB clock', used to avoid extra safety flushes.
+ * Only valid for: a) free pages, and b) pages with zero type count
+ */
+u32 tlbflush_timestamp;
+};
+u64 pad;
+};
+
+#define frame_table ((struct page_info *)FRAMETABLE_VIRT_START)
+
+/* PDX of the first page in the frame table. */
+extern unsigned long frametable_base_pdx;
+
+/* Convert between machine frame numbers and page-info structures. */
+#define mfn_to_page(mfn)\
+(frame_table + (mfn_to_pdx(mfn) - frametable_base_pdx))
+#define page_to_mfn(pg) \
+pdx_to_mfn((unsigned long)((pg) - frame_table) + frametable_base_pdx)
+
+static inline void *page_to_virt(const struct page_info *pg)
+{
+return mfn_to_virt(mfn_x(page_to_mfn(pg)));
+}
+
+/*
+ * Common code requires get_page_type and put_page_type.
+ * We don't care about typecounts so we just do the minimum to make it
+ * happy.
+

[PATCH v1 30/57] xen/riscv: introduce div64.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/div64.h | 22 ++
 1 file changed, 22 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/div64.h

diff --git a/xen/arch/riscv/include/asm/div64.h 
b/xen/arch/riscv/include/asm/div64.h
new file mode 100644
index 00..212dfe4e8a
--- /dev/null
+++ b/xen/arch/riscv/include/asm/div64.h
@@ -0,0 +1,22 @@
+#ifndef __ASM_RISCV_DIV64
+#define __ASM_RISCV_DIV64
+
+#include 
+
+# define do_div(n,base) ({  \
+uint32_t __base = (base);   \
+uint32_t __rem; \
+__rem = ((uint64_t)(n)) % __base;   \
+(n) = ((uint64_t)(n)) / __base; \
+__rem;  \
+ })
+
+#endif
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 43/57] xen/riscv: introduce asm/time.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/time.h | 20 
 1 file changed, 20 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/time.h

diff --git a/xen/arch/riscv/include/asm/time.h 
b/xen/arch/riscv/include/asm/time.h
new file mode 100644
index 00..d0571cdf32
--- /dev/null
+++ b/xen/arch/riscv/include/asm/time.h
@@ -0,0 +1,20 @@
+#ifndef __ASM_RISCV_TIME_H__
+#define __ASM_RISCV_TIME_H__
+
+#include 
+#include 
+#include 
+
+struct vcpu;
+
+/* TODO: implement */
+static inline void force_update_vcpu_system_time(struct vcpu *v) { BUG(); }
+
+typedef unsigned long cycles_t;
+
+static inline cycles_t get_cycles(void)
+{
+   return csr_read(CSR_TIME);
+}
+
+#endif /* __ASM_RISCV_TIME_H__ */
\ No newline at end of file
-- 
2.41.0

[PATCH v1 21/57] xen/riscv: introduce asm/xenoprof.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/xenoprof.h | 4 
 1 file changed, 4 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/xenoprof.h

diff --git a/xen/arch/riscv/include/asm/xenoprof.h 
b/xen/arch/riscv/include/asm/xenoprof.h
new file mode 100644
index 00..e3fc625932
--- /dev/null
+++ b/xen/arch/riscv/include/asm/xenoprof.h
@@ -0,0 +1,4 @@
+#ifndef __ASM_RISCV_XENOPROF_H__
+#define __ASM_RISCV_XENOPROF_H__
+
+#endif /* __ASM_RISCV_XENOPROF_H__ */
\ No newline at end of file
-- 
2.41.0

[PATCH v1 19/57] xen/riscv: introduce asm/setup.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/setup.h | 6 ++
 1 file changed, 6 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/setup.h

diff --git a/xen/arch/riscv/include/asm/setup.h 
b/xen/arch/riscv/include/asm/setup.h
new file mode 100644
index 00..9b3f8c6416
--- /dev/null
+++ b/xen/arch/riscv/include/asm/setup.h
@@ -0,0 +1,6 @@
+#ifndef __ASM_RISCV_SETUP_H__
+#define __ASM_RISCV_SETUP_H__
+
+#define max_init_domid (0)
+
+#endif /* __ASM_RISCV_SETUP_H__ */
\ No newline at end of file
-- 
2.41.0

[PATCH v1 23/57] xen/riscv: introduce flushtlb.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/flushtlb.h | 31 +++
 1 file changed, 31 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/flushtlb.h

diff --git a/xen/arch/riscv/include/asm/flushtlb.h 
b/xen/arch/riscv/include/asm/flushtlb.h
new file mode 100644
index 00..7059a53823
--- /dev/null
+++ b/xen/arch/riscv/include/asm/flushtlb.h
@@ -0,0 +1,31 @@
+#ifndef __ASM_RISCV_FLUSHTLB_H__
+#define __ASM_RISCV_FLUSHTLB_H__
+
+#include 
+
+/*
+ * Filter the given set of CPUs, removing those that definitely flushed their
+ * TLB since @page_timestamp.
+ */
+/* XXX lazy implementation just doesn't clear anything */
+static inline void tlbflush_filter(cpumask_t *mask, uint32_t page_timestamp) {}
+
+#define tlbflush_current_time() (0)
+
+static inline void page_set_tlbflush_timestamp(struct page_info *page)
+{
+BUG();
+}
+
+/* Flush specified CPUs' TLBs */
+void arch_flush_tlb_mask(const cpumask_t *mask);
+
+#endif /* __ASM_RISCV_FLUSHTLB_H__ */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 24/57] xen/riscv: introduce asm/percpu.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/percpu.h | 33 +
 1 file changed, 33 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/percpu.h

diff --git a/xen/arch/riscv/include/asm/percpu.h 
b/xen/arch/riscv/include/asm/percpu.h
new file mode 100644
index 00..6b317a28fd
--- /dev/null
+++ b/xen/arch/riscv/include/asm/percpu.h
@@ -0,0 +1,33 @@
+#ifndef __ASM_RISCV_PERCPU_H__
+#define __ASM_RISCV_PERCPU_H__
+
+#ifndef __ASSEMBLY__
+
+#include 
+
+extern char __per_cpu_start[], __per_cpu_data_end[];
+extern unsigned long __per_cpu_offset[NR_CPUS];
+void percpu_init_areas(void);
+
+#define per_cpu(var, cpu)  \
+(*RELOC_HIDE(_cpu__##var, __per_cpu_offset[cpu]))
+
+#define this_cpu(var) \
+(*RELOC_HIDE(_cpu__##var, __per_cpu_offset[get_processor_id()]))
+
+#define per_cpu_ptr(var, cpu)  \
+(*RELOC_HIDE(var, __per_cpu_offset[cpu]))
+#define this_cpu_ptr(var) \
+(*RELOC_HIDE(var, get_processor_id()))
+
+#endif
+
+#endif /* __ASM_RISCV_PERCPU_H__ */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 51/57] xen: add RISCV support for pmu.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/include/public/pmu.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xen/include/public/pmu.h b/xen/include/public/pmu.h
index eb87a81e7b..801912900b 100644
--- a/xen/include/public/pmu.h
+++ b/xen/include/public/pmu.h
@@ -11,6 +11,8 @@
 #include "arch-x86/pmu.h"
 #elif defined (__arm__) || defined (__aarch64__)
 #include "arch-arm.h"
+#elif defined(__riscv)
+#include "arch-riscv.h"
 #else
 #error "Unsupported architecture"
 #endif
-- 
2.41.0

[PATCH v1 33/57] xen/riscv: introduce asm/altp2m.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/altp2m.h | 28 
 1 file changed, 28 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/altp2m.h

diff --git a/xen/arch/riscv/include/asm/altp2m.h 
b/xen/arch/riscv/include/asm/altp2m.h
new file mode 100644
index 00..dc72a624f6
--- /dev/null
+++ b/xen/arch/riscv/include/asm/altp2m.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Alternate p2m
+ *
+ * Copyright (c) 2014, Intel Corporation.
+ */
+
+#ifndef __ASM_RISCV_ALTP2M_H
+#define __ASM_RISCV_ALTP2M_H
+
+#include 
+
+/* Alternate p2m on/off per domain */
+static inline bool altp2m_active(const struct domain *d)
+{
+/* Not implemented on RISCV. */
+return false;
+}
+
+/* Alternate p2m VCPU */
+static inline uint16_t altp2m_vcpu_idx(const struct vcpu *v)
+{
+/* Not implemented on RISCV, should not be reached. */
+BUG();
+return 0;
+}
+
+#endif /* __ASM_RISCV_ALTP2M_H */
-- 
2.41.0

[PATCH v1 31/57] xen/riscv: define bug frame tables in xen.lds.S

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/xen.lds.S | 10 ++
 1 file changed, 10 insertions(+)

diff --git a/xen/arch/riscv/xen.lds.S b/xen/arch/riscv/xen.lds.S
index 9064852173..aa42d3d17b 100644
--- a/xen/arch/riscv/xen.lds.S
+++ b/xen/arch/riscv/xen.lds.S
@@ -40,6 +40,16 @@ SECTIONS
 . = ALIGN(PAGE_SIZE);
 .rodata : {
 _srodata = .;  /* Read-only data */
+/* Bug frames table */
+__start_bug_frames = .;
+*(.bug_frames.0)
+__stop_bug_frames_0 = .;
+*(.bug_frames.1)
+__stop_bug_frames_1 = .;
+*(.bug_frames.2)
+__stop_bug_frames_2 = .;
+*(.bug_frames.3)
+__stop_bug_frames_3 = .;
 *(.rodata)
 *(.rodata.*)
 *(.data.rel.ro)
-- 
2.41.0

[PATCH v1 21/56] xxen/riscv: introduce asm/xenoprof.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/xenoprof.h | 4 
 1 file changed, 4 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/xenoprof.h

diff --git a/xen/arch/riscv/include/asm/xenoprof.h 
b/xen/arch/riscv/include/asm/xenoprof.h
new file mode 100644
index 00..e3fc625932
--- /dev/null
+++ b/xen/arch/riscv/include/asm/xenoprof.h
@@ -0,0 +1,4 @@
+#ifndef __ASM_RISCV_XENOPROF_H__
+#define __ASM_RISCV_XENOPROF_H__
+
+#endif /* __ASM_RISCV_XENOPROF_H__ */
\ No newline at end of file
-- 
2.41.0

[PATCH v1 56/57] test only riscv

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 automation/gitlab-ci/analyze.yaml |  16 -
 automation/gitlab-ci/build.yaml   | 544 --
 automation/gitlab-ci/test.yaml| 308 -
 3 files changed, 868 deletions(-)

diff --git a/automation/gitlab-ci/analyze.yaml 
b/automation/gitlab-ci/analyze.yaml
index 4aa4abe2ee..89cef96771 100644
--- a/automation/gitlab-ci/analyze.yaml
+++ b/automation/gitlab-ci/analyze.yaml
@@ -20,22 +20,6 @@
   codequality: gl-code-quality-report.json
   needs: []
 
-eclair-x86_64:
-  extends: .eclair-analysis
-  variables:
-LOGFILE: "eclair-x86_64.log"
-VARIANT: "X86_64"
-RULESET: "Set1"
-  allow_failure: true
-
-eclair-ARM64:
-  extends: .eclair-analysis
-  variables:
-LOGFILE: "eclair-ARM64.log"
-VARIANT: "ARM64"
-RULESET: "Set1"
-  allow_failure: true
-
 .eclair-analysis:on-schedule:
   extends: .eclair-analysis
   rules:
diff --git a/automation/gitlab-ci/build.yaml b/automation/gitlab-ci/build.yaml
index 173613567c..210f7da264 100644
--- a/automation/gitlab-ci/build.yaml
+++ b/automation/gitlab-ci/build.yaml
@@ -271,247 +271,6 @@
   needs: []
   except: !reference [.test-jobs-common, except]
 
-# Arm test artifacts
-
-alpine-3.18-arm64-rootfs-export:
-  extends: .test-jobs-artifact-common
-  image: 
registry.gitlab.com/xen-project/xen/tests-artifacts/alpine:3.18-arm64v8
-  script:
-- mkdir binaries && cp /initrd.tar.gz binaries/initrd.tar.gz
-  artifacts:
-paths:
-  - binaries/initrd.tar.gz
-  tags:
-- arm64
-
-kernel-5.19-arm64-export:
-  extends: .test-jobs-artifact-common
-  image: 
registry.gitlab.com/xen-project/xen/tests-artifacts/kernel:5.19-arm64v8
-  script:
-- mkdir binaries && cp /Image binaries/Image
-  artifacts:
-paths:
-  - binaries/Image
-  tags:
-- arm64
-
-qemu-system-aarch64-6.0.0-arm64-export:
-  extends: .test-jobs-artifact-common
-  image: 
registry.gitlab.com/xen-project/xen/tests-artifacts/qemu-system-aarch64:6.0.0-arm64v8
-  script:
-- mkdir binaries && cp /qemu-system-aarch64 binaries/qemu-system-aarch64
-  artifacts:
-paths:
-  - binaries/qemu-system-aarch64
-  tags:
-- arm64
-
-qemu-system-aarch64-6.0.0-arm32-export:
-  extends: .test-jobs-artifact-common
-  image: 
registry.gitlab.com/xen-project/xen/tests-artifacts/qemu-system-aarch64:6.0.0-arm64v8
-  script:
-- mkdir binaries && cp /qemu-system-arm binaries/qemu-system-arm
-  artifacts:
-paths:
-  - binaries/qemu-system-arm
-  tags:
-- arm64
-
-# x86_64 test artifacts
-
-alpine-3.18-rootfs-export:
-  extends: .test-jobs-artifact-common
-  image: registry.gitlab.com/xen-project/xen/tests-artifacts/alpine:3.18
-  script:
-- mkdir binaries && cp /initrd.tar.gz binaries/initrd.tar.gz
-  artifacts:
-paths:
-  - binaries/initrd.tar.gz
-  tags:
-- x86_64
-
-kernel-6.1.19-export:
-  extends: .test-jobs-artifact-common
-  image: registry.gitlab.com/xen-project/xen/tests-artifacts/kernel:6.1.19
-  script:
-- mkdir binaries && cp /bzImage binaries/bzImage
-  artifacts:
-paths:
-  - binaries/bzImage
-  tags:
-- x86_64
-
-# Jobs below this line
-
-# Build jobs needed for tests
-
-alpine-3.18-gcc:
-  extends: .gcc-x86-64-build
-  variables:
-CONTAINER: alpine:3.18
-
-alpine-3.18-gcc-debug:
-  extends: .gcc-x86-64-build-debug
-  variables:
-CONTAINER: alpine:3.18
-
-debian-stretch-gcc-debug:
-  extends: .gcc-x86-64-build-debug
-  variables:
-CONTAINER: debian:stretch
-
-debian-unstable-clang-debug:
-  extends: .clang-x86-64-build-debug
-  variables:
-CONTAINER: debian:unstable
-
-# Arm32 cross-build
-
-debian-unstable-gcc-arm32:
-  extends: .gcc-arm32-cross-build
-  variables:
-CONTAINER: debian:unstable-arm64v8-arm32-gcc
-HYPERVISOR_ONLY: y
-
-debian-unstable-gcc-arm32-debug:
-  extends: .gcc-arm32-cross-build-debug
-  variables:
-CONTAINER: debian:unstable-arm64v8-arm32-gcc
-HYPERVISOR_ONLY: y
-
-debian-unstable-gcc-arm32-randconfig:
-  extends: .gcc-arm32-cross-build
-  variables:
-CONTAINER: debian:unstable-arm64v8-arm32-gcc
-HYPERVISOR_ONLY: y
-RANDCONFIG: y
-
-debian-unstable-gcc-arm32-debug-randconfig:
-  extends: .gcc-arm32-cross-build-debug
-  variables:
-CONTAINER: debian:unstable-arm64v8-arm32-gcc
-HYPERVISOR_ONLY: y
-RANDCONFIG: y
-
-debian-unstable-gcc-arm32-staticmem:
-  extends: .gcc-arm32-cross-build
-  variables:
-CONTAINER: debian:unstable-arm64v8-arm32-gcc
-HYPERVISOR_ONLY: y
-EXTRA_XEN_CONFIG: |
-  CONFIG_EXPERT=y
-  CONFIG_UNSUPPORTED=y
-  CONFIG_STATIC_MEMORY=y
-
-debian-unstable-gcc-arm32-debug-staticmem:
-  extends: .gcc-arm32-cross-build-debug
-  variables:
-CONTAINER: debian:unstable-arm64v8-arm32-gcc
-HYPERVISOR_ONLY: y
-EXTRA_XEN_CONFIG: |
-  CONFIG_EXPERT=y
-  CONFIG_UNSUPPORTED=y
-  CONFIG_STATIC_MEMORY=y
-
-# Arm bui

[PATCH v1 39/57] xen/riscv: introduce asm/numa.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/numa.h | 38 +++
 1 file changed, 38 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/numa.h

diff --git a/xen/arch/riscv/include/asm/numa.h 
b/xen/arch/riscv/include/asm/numa.h
new file mode 100644
index 00..0cfeeed38a
--- /dev/null
+++ b/xen/arch/riscv/include/asm/numa.h
@@ -0,0 +1,38 @@
+#ifndef __ARCH_RISCV_NUMA_H
+#define __ARCH_RISCV_NUMA_H
+
+#include 
+
+typedef u8 nodeid_t;
+
+/* Fake one node for now. See also node_online_map. */
+#define cpu_to_node(cpu) 0
+#define node_to_cpumask(node)   (cpu_online_map)
+
+/*
+ * TODO: make first_valid_mfn static when NUMA is supported on RISCV, this
+ * is required because the dummy helpers are using it.
+ */
+extern mfn_t first_valid_mfn;
+
+/* XXX: implement NUMA support */
+#define node_spanned_pages(nid) (max_page - mfn_x(first_valid_mfn))
+#define node_start_pfn(nid) (mfn_x(first_valid_mfn))
+#define __node_distance(a, b) (20)
+
+static inline unsigned int arch_get_dma_bitsize(void)
+{
+return 32;
+}
+
+#define arch_want_default_dmazone() (false)
+
+#endif /* __ARCH_RISCV_NUMA_H */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 57/57] xxxen/riscv: WIP ( need advise )

2023-08-16 Thread Oleksii Kurochko

These changes are needed only to make GitLab CI happy is it doesn't
take into account tiny64_defconfig where unnecessary configs are disabled.

I tried different approaches to deal with it:
1. Override EXTRA_XEN_CONFIG and EXTRA_FIXED_RANDCONFIG in the following way:
   EXTRA_XEN_CONFIG:
 CONFIG_1=n
 CONFIG_2=n
 ...
2. Override in arch-specific KConfig:
 CONFIG_1:
default n

Each option doesn't work for me fully.

Could you please suggest other options or more correct way?

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/asm_defns.h | 44 +
 xen/arch/riscv/include/asm/grant_table.h   | 57 ++
 xen/arch/riscv/include/asm/guest_atomics.h | 16 +-
 xen/arch/riscv/include/asm/livepatch.h |  0
 xen/arch/riscv/include/asm/mm.h|  5 ++
 xen/arch/riscv/include/asm/p2m.h   | 24 +
 xen/arch/riscv/include/asm/page.h  | 16 ++
 xen/arch/riscv/include/asm/perfc_defn.h|  0
 xen/arch/riscv/mm.c| 33 +
 9 files changed, 194 insertions(+), 1 deletion(-)
 create mode 100644 xen/arch/riscv/include/asm/asm_defns.h
 create mode 100644 xen/arch/riscv/include/asm/livepatch.h
 create mode 100644 xen/arch/riscv/include/asm/perfc_defn.h

diff --git a/xen/arch/riscv/include/asm/asm_defns.h 
b/xen/arch/riscv/include/asm/asm_defns.h
new file mode 100644
index 00..dd0511a9c6
--- /dev/null
+++ b/xen/arch/riscv/include/asm/asm_defns.h
@@ -0,0 +1,44 @@
+#ifndef __ARM_ASM_DEFNS_H__
+#define __ARM_ASM_DEFNS_H__
+
+#ifndef COMPILE_OFFSETS
+/* NB. Auto-generated from arch/.../asm-offsets.c */
+#include 
+#endif
+#include 
+
+/* Macros for generic assembly code */
+#if defined(CONFIG_RISCV_32)
+# define __OP32
+# define ASM_REG(index) asm("r" # index)
+#elif defined(CONFIG_RISCV_64)
+# define __OP32 "w"
+/*
+ * Clang < 8.0 doesn't support register alllocation using the syntax rN.
+ * See https://reviews.llvm.org/rL328829.
+ */
+# define ASM_REG(index) asm("x" # index)
+#else
+# error "unknown ARM variant"
+#endif
+
+#define RODATA_STR(label, msg)  \
+.pushsection .rodata.str, "aMS", %progbits, 1 ; \
+label:  .asciz msg; \
+.popsection
+
+#define ASM_INT(label, val) \
+.p2align 2; \
+label: .long (val); \
+.size label, . - label; \
+.type label, %object
+
+#endif /* __ARM_ASM_DEFNS_H__ */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/xen/arch/riscv/include/asm/grant_table.h 
b/xen/arch/riscv/include/asm/grant_table.h
index 600fb10669..8b7880d3ed 100644
--- a/xen/arch/riscv/include/asm/grant_table.h
+++ b/xen/arch/riscv/include/asm/grant_table.h
@@ -1,4 +1,61 @@
 #ifndef __ASM_RISCV_GRANTTABLE_H__
 #define __ASM_RISCV_GRANTTABLE_H__
 
+#define INITIAL_NR_GRANT_FRAMES 1U
+
+#define gnttab_shared_page(t, i)   virt_to_page((t)->shared_raw[i])
+
+#define gnttab_status_page(t, i)   virt_to_page((t)->status[i])
+
+#define gnttab_shared_gfn(d, t, i)   \
+page_get_xenheap_gfn(gnttab_shared_page(t, i))
+
+#define gnttab_status_gfn(d, t, i)   \
+page_get_xenheap_gfn(gnttab_status_page(t, i))
+
+#define gnttab_set_frame_gfn(gt, st, idx, gfn, mfn)  \
+(gfn_eq(gfn, INVALID_GFN)\
+ ? guest_physmap_remove_page((gt)->domain,   \
+ gnttab_get_frame_gfn(gt, st, idx),  \
+ mfn, 0) \
+ : 0)
+
+#define gnttab_get_frame_gfn(gt, st, idx) ({ \
+   (st) ? gnttab_status_gfn(NULL, gt, idx)   \
+: gnttab_shared_gfn(NULL, gt, idx);  \
+})
+
+#define gnttab_need_iommu_mapping(d)\
+(is_domain_direct_mapped(d) && is_iommu_enabled(d))
+
+static inline bool gnttab_release_host_mappings(const struct domain *d)
+{
+BUG();
+}
+
+static inline void gnttab_mark_dirty(struct domain *d, mfn_t mfn)
+{
+#ifndef NDEBUG
+printk_once(XENLOG_G_WARNING "gnttab_mark_dirty not implemented yet\n");
+#endif
+}
+
+static inline void gnttab_clear_flags(struct domain *d,
+  unsigned int mask, uint16_t *addr)
+{
+BUG();
+}
+
+static inline bool gnttab_host_mapping_get_page_type(bool ro,
+ const struct domain *ld,
+ const struct domain *rd)
+{
+return false;
+}
+
+int create_grant_host_mapping(uint64_t gpaddr, mfn_t frame,
+  unsigned int flag

[PATCH v1 46/57] xen/riscv: define an address of frame table

2023-08-16 Thread Oleksii Kurochko

Also the patchs adds some helpful macros.

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/config.h | 21 +
 1 file changed, 21 insertions(+)

diff --git a/xen/arch/riscv/include/asm/config.h 
b/xen/arch/riscv/include/asm/config.h
index fa90ae0898..63ddcae1f9 100644
--- a/xen/arch/riscv/include/asm/config.h
+++ b/xen/arch/riscv/include/asm/config.h
@@ -77,12 +77,31 @@
   name:
 #endif
 
+#define VPN_BITS(9)
+#define OFFSET_BITS (12)
+
 #ifdef CONFIG_RISCV_64
+
+#define SLOTN_ENTRY_BITS(HYP_PT_ROOT_LEVEL * VPN_BITS + OFFSET_BITS)
+#define SLOTN(slot) (_AT(vaddr_t,slot) << SLOTN_ENTRY_BITS)
+#define SLOTN_ENTRY_SIZESLOTN(1)
+
 #define XEN_VIRT_START 0xC000 /* (_AC(-1, UL) + 1 - GB(1)) */
+
+#define FRAMETABLE_VIRT_START   SLOTN(196)
+#define FRAMETABLE_SIZE GB(3)
+#define FRAMETABLE_NR   (FRAMETABLE_SIZE / sizeof(*frame_table))
+#define FRAMETABLE_VIRT_END (FRAMETABLE_VIRT_START + FRAMETABLE_SIZE - 1)
+
+#define VMAP_VIRT_START SLOTN(194)
+#define VMAP_VIRT_SIZE  GB(1)
+
 #else
 #error "RV32 isn't supported"
 #endif
 
+#define HYPERVISOR_VIRT_START XEN_VIRT_START
+
 #define SMP_CACHE_BYTES (1 << 6)
 
 #define STACK_SIZE PAGE_SIZE
@@ -95,6 +114,8 @@
 #define RV_STAGE1_MODE SATP_MODE_SV32
 #endif
 
+#define HYP_PT_ROOT_LEVEL (CONFIG_PAGING_LEVELS - 1)
+
 #endif /* __RISCV_CONFIG_H__ */
 /*
  * Local variables:
-- 
2.41.0

[PATCH v1 37/57] xen/riscv: introduce asm/irq.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/irq.h | 34 
 1 file changed, 34 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/irq.h

diff --git a/xen/arch/riscv/include/asm/irq.h b/xen/arch/riscv/include/asm/irq.h
new file mode 100644
index 00..7b08785f3f
--- /dev/null
+++ b/xen/arch/riscv/include/asm/irq.h
@@ -0,0 +1,34 @@
+#ifndef __ASM_RISCV_IRQ_H__
+#define __ASM_RISCV_IRQ_H__
+
+#include 
+#include 
+#include 
+
+/* TODO */
+#define nr_irqs 0U
+#define nr_static_irqs 0
+#define arch_hwdom_irqs(domid) 0U
+
+#define domain_pirq_to_irq(d, pirq) (pirq)
+
+#define arch_evtchn_bind_pirq(d, pirq) ((void)((d) + (pirq)))
+
+struct arch_pirq {
+};
+
+struct arch_irq_desc {
+unsigned int type;
+};
+
+static inline void arch_move_irqs(struct vcpu *v)
+{
+BUG();
+}
+
+static inline int platform_get_irq(const struct dt_device_node *device, int 
index)
+{
+BUG();
+}
+
+#endif /* __ASM_RISCV_IRQ_H__ */
\ No newline at end of file
-- 
2.41.0

[PATCH v1 32/57] xen/riscv: introduce bit operations

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/Makefile|   1 +
 xen/arch/riscv/lib/Makefile|   1 +
 xen/arch/riscv/lib/find_next_bit.c | 278 +
 3 files changed, 280 insertions(+)
 create mode 100644 xen/arch/riscv/lib/Makefile
 create mode 100644 xen/arch/riscv/lib/find_next_bit.c

diff --git a/xen/arch/riscv/Makefile b/xen/arch/riscv/Makefile
index 2fefe14e7c..b08048948f 100644
--- a/xen/arch/riscv/Makefile
+++ b/xen/arch/riscv/Makefile
@@ -1,5 +1,6 @@
 obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
 obj-y += entry.o
+obj-y += lib/
 obj-y += mm.o
 obj-$(CONFIG_RISCV_64) += riscv64/
 obj-y += sbi.o
diff --git a/xen/arch/riscv/lib/Makefile b/xen/arch/riscv/lib/Makefile
new file mode 100644
index 00..6fae6a1f10
--- /dev/null
+++ b/xen/arch/riscv/lib/Makefile
@@ -0,0 +1 @@
+obj-y += find_next_bit.o
diff --git a/xen/arch/riscv/lib/find_next_bit.c 
b/xen/arch/riscv/lib/find_next_bit.c
new file mode 100644
index 00..ac5a4687e3
--- /dev/null
+++ b/xen/arch/riscv/lib/find_next_bit.c
@@ -0,0 +1,278 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * find_next_bit.c: fallback find next bit implementation
+ *
+ * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowe...@redhat.com)
+ */
+#include 
+#include 
+#include 
+
+#ifndef find_next_bit
+/*
+ * Find the next set bit in a memory region.
+ */
+unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
+   unsigned long offset)
+{
+   const unsigned long *p = addr + BIT_WORD(offset);
+   unsigned long result = offset & ~(BITS_PER_LONG-1);
+   unsigned long tmp;
+
+   if (offset >= size)
+   return size;
+   size -= result;
+   offset %= BITS_PER_LONG;
+   if (offset) {
+   tmp = *(p++);
+   tmp &= (~0UL << offset);
+   if (size < BITS_PER_LONG)
+   goto found_first;
+   if (tmp)
+   goto found_middle;
+   size -= BITS_PER_LONG;
+   result += BITS_PER_LONG;
+   }
+   while (size & ~(BITS_PER_LONG-1)) {
+   if ((tmp = *(p++)))
+   goto found_middle;
+   result += BITS_PER_LONG;
+   size -= BITS_PER_LONG;
+   }
+   if (!size)
+   return result;
+   tmp = *p;
+
+found_first:
+   tmp &= (~0UL >> (BITS_PER_LONG - size));
+   if (tmp == 0UL) /* Are any bits set? */
+   return result + size;   /* Nope. */
+found_middle:
+   return result + __ffs(tmp);
+}
+EXPORT_SYMBOL(find_next_bit);
+#endif
+
+#ifndef find_next_zero_bit
+/*
+ * This implementation of find_{first,next}_zero_bit was stolen from
+ * Linus' asm-alpha/bitops.h.
+ */
+unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size,
+unsigned long offset)
+{
+   const unsigned long *p = addr + BIT_WORD(offset);
+   unsigned long result = offset & ~(BITS_PER_LONG-1);
+   unsigned long tmp;
+
+   if (offset >= size)
+   return size;
+   size -= result;
+   offset %= BITS_PER_LONG;
+   if (offset) {
+   tmp = *(p++);
+   tmp |= ~0UL >> (BITS_PER_LONG - offset);
+   if (size < BITS_PER_LONG)
+   goto found_first;
+   if (~tmp)
+   goto found_middle;
+   size -= BITS_PER_LONG;
+   result += BITS_PER_LONG;
+   }
+   while (size & ~(BITS_PER_LONG-1)) {
+   if (~(tmp = *(p++)))
+   goto found_middle;
+   result += BITS_PER_LONG;
+   size -= BITS_PER_LONG;
+   }
+   if (!size)
+   return result;
+   tmp = *p;
+
+found_first:
+   tmp |= ~0UL << size;
+   if (tmp == ~0UL)/* Are any bits zero? */
+   return result + size;   /* Nope. */
+found_middle:
+   return result + ffz(tmp);
+}
+EXPORT_SYMBOL(find_next_zero_bit);
+#endif
+
+#ifndef find_first_bit
+/*
+ * Find the first set bit in a memory region.
+ */
+unsigned long find_first_bit(const unsigned long *addr, unsigned long size)
+{
+   const unsigned long *p = addr;
+   unsigned long result = 0;
+   unsigned long tmp;
+
+   while (size & ~(BITS_PER_LONG-1)) {
+   if ((tmp = *(p++)))
+   goto found;
+   result += BITS_PER_LONG;
+   size -= BITS_PER_LONG;
+   }
+   if (!size)
+   return result;
+
+   tmp = (*p) & (~0UL >> (BITS_PER_LONG - size));
+   if (tmp == 0UL) /* Are any bits set? */
+   return result + size;   /* Nope. */
+found:
+   return result + __ffs(tmp);
+}
+EXPORT_SYMBOL(find_first_bit);
+#endif
+
+#ifndef find_first_zero_bit

[PATCH v1 42/57] xen/riscv: introduce asm/softirq.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/softirq.h | 16 
 1 file changed, 16 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/softirq.h

diff --git a/xen/arch/riscv/include/asm/softirq.h 
b/xen/arch/riscv/include/asm/softirq.h
new file mode 100644
index 00..8364aa2810
--- /dev/null
+++ b/xen/arch/riscv/include/asm/softirq.h
@@ -0,0 +1,16 @@
+#ifndef __ASM_RISCV_SOFTIRQ_H__
+#define __ASM_RISCV_SOFTIRQ_H__
+
+#define NR_ARCH_SOFTIRQS   0
+
+#define arch_skip_send_event_check(cpu) 0
+
+#endif /* __ASM_RISCV_SOFTIRQ_H__ */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 20/57] xen/riscv: introduce asm/system.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/system.h | 83 +
 1 file changed, 83 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/system.h

diff --git a/xen/arch/riscv/include/asm/system.h 
b/xen/arch/riscv/include/asm/system.h
new file mode 100644
index 00..b1d9936594
--- /dev/null
+++ b/xen/arch/riscv/include/asm/system.h
@@ -0,0 +1,83 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _ASM_RISCV_BARRIER_H
+#define _ASM_RISCV_BARRIER_H
+
+#include 
+// #include 
+
+#ifndef __ASSEMBLY__
+
+#define RISCV_FENCE(p, s) \
+__asm__ __volatile__ ("fence " #p "," #s : : : "memory")
+
+/* These barriers need to enforce ordering on both devices or memory. */
+#define mb()RISCV_FENCE(iorw,iorw)
+#define rmb()   RISCV_FENCE(ir,ir)
+#define wmb()   RISCV_FENCE(ow,ow)
+
+/* These barriers do not need to enforce ordering on devices, just memory. */
+#define smp_mb()RISCV_FENCE(rw,rw)
+#define smp_rmb()   RISCV_FENCE(r,r)
+#define smp_wmb()   RISCV_FENCE(w,w)
+#define smp_mb__before_atomic() smp_mb()
+#define smp_mb__after_atomic()  smp_mb()
+
+/*
+#define __smp_store_release(p, v)   \
+do {\
+   compiletime_assert_atomic_type(*p); \
+   RISCV_FENCE(rw,w);  \
+   WRITE_ONCE(*p, v);  \
+} while (0)
+
+#define __smp_load_acquire(p)   \
+({  \
+typeof(*p) ___p1 = READ_ONCE(*p);   \
+compiletime_assert_atomic_type(*p); \
+RISCV_FENCE(r,rw);  \
+___p1;  \
+})
+*/
+
+static inline unsigned long local_save_flags(void)
+{
+return csr_read(sstatus);
+}
+
+static inline void local_irq_enable(void)
+{
+csr_set(sstatus, SSTATUS_SIE);
+}
+
+static inline void local_irq_disable(void)
+{
+csr_clear(sstatus, SSTATUS_SIE);
+}
+
+#define local_irq_save(x)   \
+({  \
+x = csr_read_clear(CSR_SSTATUS, SSTATUS_SIE);   \
+local_irq_disable();\
+})
+
+static inline void local_irq_restore(unsigned long flags)
+{
+   csr_set(CSR_SSTATUS, flags & SSTATUS_SIE);
+}
+
+static inline int local_irq_is_enabled(void)
+{
+unsigned long flags = local_save_flags();
+
+return flags & SSTATUS_SIE;
+}
+
+#define arch_fetch_and_add(x, v) __sync_fetch_and_add(x, v)
+
+// extern struct vcpu *__context_switch(struct vcpu *prev, struct vcpu *next);
+
+#endif /* __ASSEMBLY__ */
+
+
+#endif /* _ASM_RISCV_BARRIER_H */
-- 
2.41.0

[PATCH v1 41/56] xxen/riscv: introduce asm/regs.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/regs.h | 27 +++
 1 file changed, 27 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/regs.h

diff --git a/xen/arch/riscv/include/asm/regs.h 
b/xen/arch/riscv/include/asm/regs.h
new file mode 100644
index 00..33ae759a3e
--- /dev/null
+++ b/xen/arch/riscv/include/asm/regs.h
@@ -0,0 +1,27 @@
+#ifndef __ARM_RISCV_REGS_H__
+#define __ARM_RISCV_REGS_H__
+
+#ifndef __ASSEMBLY__
+
+#include 
+#include 
+
+#define hyp_mode(r) (0)
+
+static inline bool guest_mode(const struct cpu_user_regs *r)
+{
+BUG();
+}
+
+#endif
+
+
+#endif /* __ARM_RISCV_REGS_H__ */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 45/57] xen/riscv: add definition of __read_mostly

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/cache.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xen/arch/riscv/include/asm/cache.h 
b/xen/arch/riscv/include/asm/cache.h
index 69573eb051..94bd94db53 100644
--- a/xen/arch/riscv/include/asm/cache.h
+++ b/xen/arch/riscv/include/asm/cache.h
@@ -3,4 +3,6 @@
 #ifndef _ASM_RISCV_CACHE_H
 #define _ASM_RISCV_CACHE_H
 
+#define __read_mostly __section(".data.read_mostly")
+
 #endif /* _ASM_RISCV_CACHE_H */
-- 
2.41.0

[PATCH v1 01/57] xen/riscv:introduce asm/byteorder.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/byteorder.h | 16 
 1 file changed, 16 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/byteorder.h

diff --git a/xen/arch/riscv/include/asm/byteorder.h 
b/xen/arch/riscv/include/asm/byteorder.h
new file mode 100644
index 00..320a03c88f
--- /dev/null
+++ b/xen/arch/riscv/include/asm/byteorder.h
@@ -0,0 +1,16 @@
+#ifndef __ASM_RISCV_BYTEORDER_H__
+#define __ASM_RISCV_BYTEORDER_H__
+
+#define __BYTEORDER_HAS_U64__
+
+#include 
+
+#endif /* __ASM_RISCV_BYTEORDER_H__ */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 09/57] xen/riscv: introduce asm/event.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/event.h | 34 ++
 1 file changed, 34 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/event.h

diff --git a/xen/arch/riscv/include/asm/event.h 
b/xen/arch/riscv/include/asm/event.h
new file mode 100644
index 00..48630c77b3
--- /dev/null
+++ b/xen/arch/riscv/include/asm/event.h
@@ -0,0 +1,34 @@
+#ifndef __ASM_RISCV_EVENT_H__
+#define __ASM_RISCV_EVENT_H__
+
+void vcpu_mark_events_pending(struct vcpu *v);
+
+static inline int vcpu_event_delivery_is_enabled(struct vcpu *v)
+{
+return 0;
+}
+
+static inline int local_events_need_delivery(void)
+{
+return 0;
+}
+
+static inline void local_event_delivery_enable(void)
+{
+}
+
+/* No arch specific virq definition now. Default to global. */
+static inline bool arch_virq_is_global(unsigned int virq)
+{
+return true;
+}
+
+#endif
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 10/57] xen/riscv: introduce asm/grant_table.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/grant_table.h | 4 
 1 file changed, 4 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/grant_table.h

diff --git a/xen/arch/riscv/include/asm/grant_table.h 
b/xen/arch/riscv/include/asm/grant_table.h
new file mode 100644
index 00..600fb10669
--- /dev/null
+++ b/xen/arch/riscv/include/asm/grant_table.h
@@ -0,0 +1,4 @@
+#ifndef __ASM_RISCV_GRANTTABLE_H__
+#define __ASM_RISCV_GRANTTABLE_H__
+
+#endif /* __ASM_RISCV_GRANTTABLE_H__ */
\ No newline at end of file
-- 
2.41.0

[PATCH v1 12/57] xen/riscv: introduce asm/hypercall.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/hypercall.h | 4 
 1 file changed, 4 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/hypercall.h

diff --git a/xen/arch/riscv/include/asm/hypercall.h 
b/xen/arch/riscv/include/asm/hypercall.h
new file mode 100644
index 00..f58c2f2761
--- /dev/null
+++ b/xen/arch/riscv/include/asm/hypercall.h
@@ -0,0 +1,4 @@
+#ifndef __ASM_RISCV_HYPERCALL_H__
+#define __ASM_RISCV_HYPERCALL_H__
+
+#endif /* __ASM_RISCV_HYPERCALL_H__ */
\ No newline at end of file
-- 
2.41.0

[PATCH v1 13/57] xen/riscv: introduce asm/iocap.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/iocap.h | 16 
 1 file changed, 16 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/iocap.h

diff --git a/xen/arch/riscv/include/asm/iocap.h 
b/xen/arch/riscv/include/asm/iocap.h
new file mode 100644
index 00..c3147b1aed
--- /dev/null
+++ b/xen/arch/riscv/include/asm/iocap.h
@@ -0,0 +1,16 @@
+#ifndef __ASM_RISCV_IOCAP_H__
+#define __ASM_RISCV_IOCAP_H__
+
+#define cache_flush_permitted(d)\
+(!rangeset_is_empty((d)->iomem_caps))
+
+#endif
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

[PATCH v1 11/57] xen/riscv: introduce asm/guest_atomics.h

2023-08-16 Thread Oleksii Kurochko

Signed-off-by: Oleksii Kurochko 
---
 xen/arch/riscv/include/asm/guest_atomics.h | 49 ++
 1 file changed, 49 insertions(+)
 create mode 100644 xen/arch/riscv/include/asm/guest_atomics.h

diff --git a/xen/arch/riscv/include/asm/guest_atomics.h 
b/xen/arch/riscv/include/asm/guest_atomics.h
new file mode 100644
index 00..71b0b11a25
--- /dev/null
+++ b/xen/arch/riscv/include/asm/guest_atomics.h
@@ -0,0 +1,49 @@
+#ifndef __ASM_RISCV_GUEST_ATOMICS_H
+#define __ASM_RISCV_GUEST_ATOMICS_H
+
+/*
+ * TODO: implement guest atomics
+ */
+
+#define guest_testop(name)  \
+static inline int guest_##name(struct domain *d, int nr, volatile void *p)  \
+{   \
+(void) d;   \
+(void) nr;  \
+(void) p;   \
+\
+return 0;   \
+}
+
+#define guest_bitop(name)   \
+static inline void guest_##name(struct domain *d, int nr, volatile void *p) \
+{   \
+(void) d;   \
+(void) nr;  \
+(void) p;   \
+}
+
+guest_bitop(set_bit)
+guest_bitop(clear_bit)
+guest_bitop(change_bit)
+
+#undef guest_bitop
+
+guest_testop(test_and_set_bit)
+guest_testop(test_and_clear_bit)
+guest_testop(test_and_change_bit)
+
+#undef guest_testop
+
+
+#define guest_test_bit(d, nr, p) ((void)(d), test_bit(nr, p))
+
+#endif /* __ASM_RISCV_GUEST_ATOMICS_H */
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
-- 
2.41.0

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