On 3/16/20 1:29 AM, Aleksandar Markovic wrote:
On Monday, March 16, 2020, Philippe Mathieu-Daudé <phi...@redhat.com
<mailto:phi...@redhat.com>> wrote:
Move out x86-specific structures from generic machine code.
Philippe,
I a kind of have hard time understanding what is achieved with this
patch. Is this pure code moving/reorganization? What is the logical
connection between this patch and the whole series (that is about
removing unneeded building for user mode)? How does this patch affect
build time for user mode?
This code ends up in all linux-user binaries:
$ make clean mipsel-linux-user/all
$ fgrep -r X86CPURegister32
Binary file qapi/qapi-visit-machine.o matches
qapi/qapi-visit-machine.h:void visit_type_X86CPURegister32(Visitor *v,
const char *name, X86CPURegister32 *obj, Error **errp);
qapi/qapi-types-machine.c:const QEnumLookup X86CPURegister32_lookup = {
qapi/qapi-types-machine.h:typedef enum X86CPURegister32 {
qapi/qapi-types-machine.h:} X86CPURegister32;
qapi/qapi-types-machine.h:#define X86CPURegister32_str(val) \
qapi/qapi-types-machine.h: qapi_enum_lookup(&X86CPURegister32_lookup,
(val))
qapi/qapi-types-machine.h:extern const QEnumLookup X86CPURegister32_lookup;
qapi/qapi-types-machine.h: X86CPURegister32 cpuid_register;
Binary file qapi/qapi-events-machine.o matches
Binary file qapi/qapi-types-machine.o matches
qapi/qapi-doc.texi:@deftp {Enum} X86CPURegister32
qapi/qapi-doc.texi:@item @code{cpuid-register: X86CPURegister32}
qapi/qapi-visit-machine.c:void visit_type_X86CPURegister32(Visitor *v,
const char *name, X86CPURegister32 *obj, Error **errp)
qapi/qapi-visit-machine.c: visit_type_enum(v, name, &value,
&X86CPURegister32_lookup, errp);
qapi/qapi-visit-machine.c: visit_type_X86CPURegister32(v,
"cpuid-register", &obj->cpuid_register, &err);
Binary file hw/core/qdev.o matches
Binary file hw/core/cpu.o matches
Binary file libqemuutil.a matches
Binary file mipsel-linux-user/qemu-mipsel matches
\-----------------------------------/
By restricting this structure on the x86 architecture, this is less time
compiling unused code on others archs, and resulting binary is smaller too.
Sincerely,
Aleksandar
Acked-by: Richard Henderson <richard.hender...@linaro.org
<mailto:richard.hender...@linaro.org>>
Signed-off-by: Philippe Mathieu-Daudé <phi...@redhat.com
<mailto:phi...@redhat.com>>
---
qapi/machine-target.json | 45 ++++++++++++++++++++++++++++++++++++++
qapi/machine.json | 42 -----------------------------------
target/i386/cpu.c | 2 +-
target/i386/machine-stub.c | 22 +++++++++++++++++++
target/i386/Makefile.objs | 3 ++-
5 files changed, 70 insertions(+), 44 deletions(-)
create mode 100644 target/i386/machine-stub.c
diff --git a/qapi/machine-target.json b/qapi/machine-target.json
index f2c82949d8..fb7a4b7850 100644
--- a/qapi/machine-target.json
+++ b/qapi/machine-target.json
@@ -3,6 +3,51 @@
# This work is licensed under the terms of the GNU GPL, version 2
or later.
# See the COPYING file in the top-level directory.
+##
+# @X86CPURegister32:
+#
+# A X86 32-bit register
+#
+# Since: 1.5
+##
+{ 'enum': 'X86CPURegister32',
+ 'data': [ 'EAX', 'EBX', 'ECX', 'EDX', 'ESP', 'EBP', 'ESI', 'EDI' ],
+ 'if': 'defined(TARGET_I386)' }
+
+##
+# @X86CPUFeatureWordInfo:
+#
+# Information about a X86 CPU feature word
+#
+# @cpuid-input-eax: Input EAX value for CPUID instruction for that
feature word
+#
+# @cpuid-input-ecx: Input ECX value for CPUID instruction for that
+# feature word
+#
+# @cpuid-register: Output register containing the feature bits
+#
+# @features: value of output register, containing the feature bits
+#
+# Since: 1.5
+##
+{ 'struct': 'X86CPUFeatureWordInfo',
+ 'data': { 'cpuid-input-eax': 'int',
+ '*cpuid-input-ecx': 'int',
+ 'cpuid-register': 'X86CPURegister32',
+ 'features': 'int' },
+ 'if': 'defined(TARGET_I386)' }
+
+##
+# @DummyForceArrays:
+#
+# Not used by QMP; hack to let us use X86CPUFeatureWordInfoList
internally
+#
+# Since: 2.5
+##
+{ 'struct': 'DummyForceArrays',
+ 'data': { 'unused': ['X86CPUFeatureWordInfo'] },
+ 'if': 'defined(TARGET_I386)' }
+
##
# @CpuModelInfo:
#
diff --git a/qapi/machine.json b/qapi/machine.json
index 6c11e3cf3a..de05730704 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -505,48 +505,6 @@
'dst': 'uint16',
'val': 'uint8' }}
-##
-# @X86CPURegister32:
-#
-# A X86 32-bit register
-#
-# Since: 1.5
-##
-{ 'enum': 'X86CPURegister32',
- 'data': [ 'EAX', 'EBX', 'ECX', 'EDX', 'ESP', 'EBP', 'ESI', 'EDI' ] }
-
-##
-# @X86CPUFeatureWordInfo:
-#
-# Information about a X86 CPU feature word
-#
-# @cpuid-input-eax: Input EAX value for CPUID instruction for that
feature word
-#
-# @cpuid-input-ecx: Input ECX value for CPUID instruction for that
-# feature word
-#
-# @cpuid-register: Output register containing the feature bits
-#
-# @features: value of output register, containing the feature bits
-#
-# Since: 1.5
-##
-{ 'struct': 'X86CPUFeatureWordInfo',
- 'data': { 'cpuid-input-eax': 'int',
- '*cpuid-input-ecx': 'int',
- 'cpuid-register': 'X86CPURegister32',
- 'features': 'int' } }
-
-##
-# @DummyForceArrays:
-#
-# Not used by QMP; hack to let us use X86CPUFeatureWordInfoList
internally
-#
-# Since: 2.5
-##
-{ 'struct': 'DummyForceArrays',
- 'data': { 'unused': ['X86CPUFeatureWordInfo'] } }
-
##
# @NumaCpuOptions:
#
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index a84553e50c..0753fe4935 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -37,7 +37,7 @@
#include "qemu/option.h"
#include "qemu/config-file.h"
#include "qapi/error.h"
-#include "qapi/qapi-visit-machine.h"
+#include "qapi/qapi-visit-machine-target.h"
#include "qapi/qapi-visit-run-state.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qerror.h"
diff --git a/target/i386/machine-stub.c b/target/i386/machine-stub.c
new file mode 100644
index 0000000000..cb301af057
--- /dev/null
+++ b/target/i386/machine-stub.c
@@ -0,0 +1,22 @@
+/*
+ * QAPI x86 CPU features stub
+ *
+ * Copyright (c) 2020 Red Hat, Inc.
+ *
+ * Author:
+ * Philippe Mathieu-Daudé <phi...@redhat.com
<mailto:phi...@redhat.com>>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2
or later.
+ * See the COPYING file in the top-level directory.
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qapi/qapi-visit-machine-target.h"
+
+void visit_type_X86CPUFeatureWordInfoList(Visitor *v, const char *name,
+ X86CPUFeatureWordInfoList **obj,
+ Error **errp)
+{
+}
diff --git a/target/i386/Makefile.objs b/target/i386/Makefile.objs
index 48e0c28434..1cdfc9f50c 100644
--- a/target/i386/Makefile.objs
+++ b/target/i386/Makefile.objs
@@ -17,6 +17,7 @@ obj-$(CONFIG_HAX) += hax-all.o hax-mem.o hax-posix.o
endif
obj-$(CONFIG_HVF) += hvf/
obj-$(CONFIG_WHPX) += whpx-all.o
-endif
+endif # CONFIG_SOFTMMU
obj-$(CONFIG_SEV) += sev.o
obj-$(call lnot,$(CONFIG_SEV)) += sev-stub.o
+obj-$(call lnot,$(CONFIG_SOFTMMU)) += machine-stub.o
--
2.21.1
