[PATCH v5 1/4] xen/riscv: add VM space layout

Also it was added explanation about ignoring of top VA bits Signed-off-by: Oleksii Kurochko --- Changes in V5: * the patch was introduced in the current patch series. --- xen/arch/riscv/include/asm/config.h | 31 + 1 file changed, 31 insertions(+) diff --git a/xen

[PATCH v5 0/4] enable MMU for RISC-V

duced simplified approach for RISC-V smoke test by Andrew Cooper * Add patch [[xen/riscv: remove dummy_bss variable] as there is no any sense in dummy_bss variable after introduction of inittial page tables. --- Oleksii Kurochko (4): xen/riscv: add VM space layout xen/riscv: introd

[PATCH v5 3/4] xen/riscv: setup initial pagetables

The patch does two thing: 1. Setup initial pagetables. 2. Enable MMU which end up with code in cont_after_mmu_is_enabled() Signed-off-by: Oleksii Kurochko --- Changes in V5: - Nothing changed. Only rebase --- Changes in V4: - Nothing changed. Only rebase --- Changes in V3: - update

[PATCH v5 4/4] xen/riscv: remove dummy_bss variable

After introduction of initial pagetables there is no any sense in dummy_bss variable as bss section will not be empty anymore. Signed-off-by: Oleksii Kurochko --- Changes in V5: - Nothing changed. Only rebase --- Changes in V4: - Nothing changed. Only rebase --- Changes in V3: * patch

[PATCH v3 0/3] enable MMU for RISC-V

pproach for RISC-V smoke test by Andrew Cooper * Add patch [[xen/riscv: remove dummy_bss variable] as there is no any sense in dummy_bss variable after introduction of inittial page tables. --- Oleksii Kurochko (3): xen/riscv: introduce setup_initial_pages xen/riscv: setup initial paget

[PATCH v3 3/3] xen/riscv: remove dummy_bss variable

After introduction of initial pagetables there is no any sense in dummy_bss variable as bss section will not be empty anymore. Signed-off-by: Oleksii Kurochko --- Changes in V3: * patch was introduced in the current one patch series (v3). --- Changes in V2: * patch was introduced

[PATCH v3 2/3] xen/riscv: setup initial pagetables

The patch does two thing: 1. Setup initial pagetables. 2. Enable MMU which end up with code in cont_after_mmu_is_enabled() Signed-off-by: Oleksii Kurochko --- Changes in V3: - update the commit message that MMU is also enabled here - remove early_printk("All set up\n") as it

[PATCH v3 1/3] xen/riscv: introduce setup_initial_pages

ons for specific section ( such as .text, .rodata, etc ) otherwise RW permission will be set by default. Origin: g...@github.com:xvisor/xvisor.git 9be2fdd7 Signed-off-by: Oleksii Kurochko --- Changes in V3: - update definition of pte_t structure to have a proper size of pte_t in case of RV32. -

[PATCH v4 2/3] xen/riscv: setup initial pagetables

The patch does two thing: 1. Setup initial pagetables. 2. Enable MMU which end up with code in cont_after_mmu_is_enabled() Signed-off-by: Oleksii Kurochko --- Changes in V4: - Nothing changed. Only rebase --- Changes in V3: - update the commit message that MMU is also enabled here - remove

[PATCH v4 0/3] enable MMU for RISC-V

dd patch [[xen/riscv: remove dummy_bss variable] as there is no any sense in dummy_bss variable after introduction of inittial page tables. --- Oleksii Kurochko (3): xen/riscv: introduce setup_initial_pages xen/riscv: setup initial pagetables xen/riscv: remove dummy_bss variable xen/arch/

[PATCH v4 3/3] xen/riscv: remove dummy_bss variable

After introduction of initial pagetables there is no any sense in dummy_bss variable as bss section will not be empty anymore. Signed-off-by: Oleksii Kurochko --- Changes in V4: - Nothing changed. Only rebase --- Changes in V3: * patch was introduced in the current one patch series (v3

[PATCH v4 1/3] xen/riscv: introduce setup_initial_pages

ons for specific section ( such as .text, .rodata, etc ) otherwise RW permission will be set by default. * Add function to check that requested SATP_MODE is supported Origin: g...@github.com:xvisor/xvisor.git 9be2fdd7 Signed-off-by: Oleksii Kurochko --- Changes in V4: * use GB() macros instead of def

[PATCH v9 3/5] xen: change to

e used in <*/cpufreq.c> In the following two patches x86 and ARM archictectures will be switched fully: [1] xen/arm: switch ARM to use generic implementation of bug.h [2] xen/x86: switch x86 to use generic implemetation of bug.h Signed-off-by: Oleksii Kurochko Reviewed-by: Jan Beulich

[PATCH v9 5/5] xen/x86: switch x86 to use generic implemetation of bug.h

void *' Signed-off-by: Oleksii Kurochko Reviewed-by: Jan Beulich --- Changes in V9: * update the commit message * add additional explanation to header --- Changes in V8: * move from to to fix compilation issue. The following compilation issue occurs: In file included from ./arch

[PATCH v9 1/5] xen: introduce CONFIG_GENERIC_BUG_FRAME

of do_bug_frame * new config CONFIG_GENERIC_BUG_FRAME Signed-off-by: Oleksii Kurochko --- Changes in V9: * rename BUILD_BUG_ON_LINE_WIDTH to BUG_CHECK_LINE_WIDTH * Remove from as the patch were merged to staging which move all things used in from to more proper headers. * add

[PATCH v9 0/5] introduce generic implementation of macros from bug.h

. * Rework do_invalid_op() in x86 ( re-use handle_bug_frame() and find_bug_frame() ) --- Oleksii Kurochko (5): xen: introduce CONFIG_GENERIC_BUG_FRAME xen/arm: remove unused defines in xen: change to xen/arm: switch ARM to use generic implementation of bug.h xen/x86: switch x86 to use

[PATCH v9 2/5] xen/arm: remove unused defines in

The following defines BUG_DISP_WIDTH, BUG_LINE_LO_WIDTH, BUG_LINE_HI_WIDTH aren't used in ARM so could be purged as unused. Requested-by: Jan Beulich Signed-off-by: Oleksii Kurochko Reviewed-by: Jan Beulich --- Changes in V9: * Nothing changed --- Changes in V8: * Update the commit message

[PATCH v9 4/5] xen/arm: switch ARM to use generic implementation of bug.h

implementation of bug.h macros to generic one Signed-off-by: Oleksii Kurochko --- Changes in V9: * add additional explanation to header --- Changes in V8: * Nothing changed. --- Changes in V7: * Rebase the patch. --- Changes in V6: * Update the "changes in v5" * Rebase on top of the patch [xen:

[PATCH v1 2/4] xen/arm: switch ARM to use generic implementation of bug.h

Signed-off-by: Oleksii Kurochko --- xen/arch/arm/Kconfig | 1 + xen/arch/arm/include/asm/bug.h | 86 xen/arch/arm/include/asm/div64.h | 2 +- xen/arch/arm/traps.c | 79 - xen/arch/arm/vgic/vgic-v2.c

[PATCH v1 1/4] xen: introduce CONFIG_GENERIC_BUG_FRAME

header * generic implementation of do_bug_frame() * new config CONFIG_GENERIC_BUG_FRAME Signed-off-by: Oleksii Kurochko --- xen/common/Kconfig| 6 ++ xen/common/Makefile | 1 + xen/common/bug.c | 88 + xen/include/xen/bug.h | 127

[PATCH v1 3/4] xen/x86: switch x86 to use generic implemetation of bug.h

Signed-off-by: Oleksii Kurochko --- xen/arch/x86/acpi/cpufreq/cpufreq.c | 2 +- xen/arch/x86/include/asm/asm_defns.h | 2 +- xen/arch/x86/include/asm/bug.h | 32 ++-- 3 files changed, 4 insertions(+), 32 deletions(-) diff --git a/xen/arch/x86/acpi/cpufreq

[PATCH v1 0/4] introduce generic implementation of macros from bug.h

only common parts was removed from . RISC-V will be switched to use and in the future, it will use common the version of do_bug_frame() when xen/common will work for RISC-V. Oleksii Kurochko (4): xen: introduce CONFIG_GENERIC_BUG_FRAME xen/arm: switch ARM to use generic implementation

[PATCH v1 4/4] xen: change to

Since the generic version of bug.h stuff was introduced it is necessary to rename all uses of to Signed-off-by: Oleksii Kurochko --- xen/drivers/cpufreq/cpufreq.c | 2 +- xen/include/xen/lib.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/xen/drivers/cpufreq

[PATCH v10 2/2] automation: add RISC-V smoke test

Add check if there is a message 'Hello from C env' presents in log file to be sure that stack is set and C part of early printk is working. Signed-off-by: Oleksii Kurochko Acked-by: Stefano Stabellini Reviewed-by: Alistair Francis --- Changes in V10: - Nothing changed --- Changes in V9

[PATCH v10 0/2] Basic early_printk and smoke test implementation

5: - Nothing changed --- Changes in V4: - Nothing changed --- Changes in V3: - Nothing changed - All mentioned comments by Stefano in Xen mailing list will be fixed as a separate patch out of this patch series. --- Oleksii Kurochko (2): xen/riscv: introduce early_printk basic stuff automa

[PATCH v10 1/2] xen/riscv: introduce early_printk basic stuff

ow so there is no vscnprintf. This commit adds early printk implementation built on the putc SBI call. As sbi_console_putchar() is already being planned for deprecation it is used temporarily now and will be removed or reworked after real uart will be ready. Signed-off-by: Bobby Eshleman Signed-off-by: Ol

[PATCH v3 01/14] xen/riscv: change ISA to r64G

-off-by: Oleksii Kurochko Reviewed-by: Alistair Francis --- Changes in V3: - Change the name of config RISCV_ISA_RV64IMA to RISCV_ISA_RV64G as instructions from Zicsr and Zifencei extensions aren't part of I extension any more. --- Changes in V2: - Nothing changed --- xen/arch/riscv

[PATCH v9 2/2] automation: add RISC-V smoke test

Add check if there is a message 'Hello from C env' presents in log file to be sure that stack is set and C part of early printk is working. Signed-off-by: Oleksii Kurochko Acked-by: Stefano Stabellini Reviewed-by: Alistair Francis --- Changes in V9: - Nothing changed --- Changes in V8: - Set

[PATCH v9 0/2] Basic early_printk and smoke test implementation

All mentioned comments by Stefano in Xen mailing list will be fixed as a separate patch out of this patch series. --- Oleksii Kurochko (2): xen/riscv: introduce early_printk basic stuff automation: add RISC-V smoke test automation/gitlab-ci/test.yaml| 20 ++ automa

[PATCH v9 1/2] xen/riscv: introduce early_printk basic stuff

ow so there is no vscnprintf. This commit adds early printk implementation built on the putc SBI call. As sbi_console_putchar() is already being planned for deprecation it is used temporarily now and will be removed or reworked after real uart will be ready. Signed-off-by: Bobby Eshleman Signed-off-by: Ol

[PATCH v3 07/14] xen/riscv: introduce exception context

eded for current status of the RISC-V port - register_t renamed to unsigned long - rename wait_for_interrupt to wfi Signed-off-by: Bobby Eshleman Signed-off-by: Oleksii Kurochko --- Changes in V3: - update code style for die() function --- Changes in V2: - All the changes were a

[PATCH v3 10/14] xen/riscv: mask all interrupts

Signed-off-by: Oleksii Kurochko Reviewed-by: Alistair Francis --- Changes in V3: - Nothing changed --- Changes in V2: - Add Reviewed-by to the commit message --- xen/arch/riscv/riscv64/head.S | 5 + 1 file changed, 5 insertions(+) diff --git a/xen/arch/riscv/riscv64/head.S b/xen/arch

[PATCH v3 03/14] xen/riscv: add

Signed-off-by: Oleksii Kurochko Acked-by: Alistair Francis --- Changes in V3: - Add Acked-by: Alistair Francis --- Changes in V2: - Take the latest version of riscv_encoding.h from OpenSBI. - Update riscv_encoding.h with Xen related changes mentioned in the commit message. - Update comm

[PATCH v3 00/14] RISCV basic exception handling implementation

pdate correspondingly the patches in the patch series. - Refactor bug.h, remove bug_instr_t type from it. - Refactor decode_trap_cause() function to be more optimization-friendly. - Add two new empty headers: and as they are needed to include which provides ARRAY_SIZE and other macro

[PATCH v3 12/14] xen/riscv: introduce an implementation of macros from

The patch introduces macros: BUG(), WARN(), run_in_exception(), assert_failed. The implementation uses "ebreak" instruction in combination with diffrent bug frame tables (for each type) which contains useful information. Signed-off-by: Oleksii Kurochko --- Changes in V3: - Rebase

[PATCH v3 08/14] xen/riscv: introduce exception handlers implementation

The patch introduces an implementation of basic exception handlers: - to save/restore context - to handle an exception itself. The handler calls wait_for_interrupt now, nothing more. Signed-off-by: Oleksii Kurochko --- Changes in V3: - Nothing changed --- Changes in V2: - Refactor entry.S

[PATCH v3 11/14] xen/riscv: introduce trap_init()

Signed-off-by: Oleksii Kurochko Reviewed-by: Alistair Francis --- Changes in V3: - Nothing changed --- Changes in V2: - Rename setup_trap_handler() to trap_init(). - Add Reviewed-by to the commit message. --- xen/arch/riscv/include/asm/traps.h | 1 + xen/arch/riscv/setup.c | 4

[PATCH v3 09/14] xen/riscv: introduce decode_cause() stuff

The patch introduces stuff needed to decode a reason of an exception. Signed-off-by: Oleksii Kurochko --- Changes in V3: - Nothing changed --- Changes in V2: - Make decode_trap_cause() more optimization friendly. - Merge the pathc which introduces do_unexpected_trap() to the current one

[PATCH v3 14/14] automation: modify RISC-V smoke test

The patch modifies the grep pattern to reflect the usage of WARN. Signed-off-by: Oleksii Kurochko --- Changes in V3: - Update commit message --- Changes in V2: - Leave only the latest "grep ..." --- automation/scripts/qemu-smoke-riscv64.sh | 2 +- 1 file changed, 1 insertion(+),

[PATCH v3 13/14] xen/riscv: test basic handling stuff

Signed-off-by: Oleksii Kurochko --- Changes in V3: - Nothing changed --- Changes in V2: - Nothing changed --- xen/arch/riscv/setup.c | 16 1 file changed, 16 insertions(+) diff --git a/xen/arch/riscv/setup.c b/xen/arch/riscv/setup.c index d502cf06b0..8d070244fd 100644

[PATCH v3 02/14] xen/riscv: add header

Signed-off-by: Oleksii Kurochko --- Changes in V3: - Nothing changed --- Changes in V2: - Nothing changed --- xen/arch/riscv/include/asm/asm.h | 54 1 file changed, 54 insertions(+) create mode 100644 xen/arch/riscv/include/asm/asm.h diff --git a/xen/arch

[PATCH v3 04/14] xen/riscv: add header

The following changes were made in comparison with from Linux: * remove all defines as they are defined in riscv_encoding.h * leave only csr_* macros Origin: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/ d2d11f342b17 Signed-off-by: Oleksii Kurochko --- Changes in V3

[PATCH v3 06/14] xen/riscv: introduce empty

To include is required Signed-off-by: Oleksii Kurochko Acked-by: Alistair Francis --- Changes in V3: - Add Acked-by: Alistair Francis --- Changes in V2: - is a new empty header which is required to include --- xen/arch/riscv/include/asm/cache.h | 6 ++ 1 file changed, 6

[PATCH v3 05/14] xen/riscv: introduce empty

To include is required Signed-off-by: Oleksii Kurochko Acked-by: Alistair Francis --- Changes in V3: - Add Acked-by: Alistair Francis --- Changes in V2: - is a new empty header which is required to include --- xen/arch/riscv/include/asm/string.h | 6 ++ 1 file changed, 6

[PATCH] ns1650: refactor interrupt handling in ns16550_uart_dt_init()

ev, 0); if ( ! res ) return -EINVAL; uart->irq = res; If 'res' equals to -1 then polling mode should be used instead of return -EINVAL. Signed-off-by: Oleksii Kurochko --- xen/drivers/char/ns16550.c | 12 ++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --g

[PATCH v2] ns16550: add support for polling mode when device tree is used

://github.com/torvalds/linux/blob/master/arch/powerpc/boot/dts/ebony.dts#L197 Signed-off-by: Oleksii Kurochko --- xen/drivers/char/ns16550.c | 51 -- 1 file changed, 38 insertions(+), 13 deletions(-) diff --git a/xen/drivers/char/ns16550.c b/xen/drivers/char

[PATCH v3 1/3] xen/riscv: add SPDX tag to config.h

Signed-off-by: Oleksii Kurochko --- Changes in V3: - new patch --- xen/arch/riscv/include/asm/config.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/xen/arch/riscv/include/asm/config.h b/xen/arch/riscv/include/asm/config.h index 38862df0b8..fa90ae0898 100644 --- a/xen/arch/riscv

[PATCH v3 3/3] xen/riscv: introduce identity mapping

les. Since it is not easy to keep track where the identity map was mapped, so we will look for the top-most entry exclusive to the identity map and remove it. Fixes: e66003e7be ("xen/riscv: introduce setup_initial_pages") Signed-off-by: Oleksii Kurochko Suggested-by: Andrew Coope

[PATCH v3 0/3] xen/riscv: introduce identity mapping

_init. - Update SPDX tags. - Add Review-By/Suggested-By for some patches. - code style fixes. Oleksii Kurochko (3): xen/riscv: add SPDX tag to config.h xen/riscv: introduce function for physical offset calculation xen/riscv: introduce identity mapping xen/arch/riscv/include/asm/config.h | 2 +

[PATCH v3 2/3] xen/riscv: introduce function for physical offset calculation

The function was introduced to calculate and save physical offset before MMU is enabled because access to start() is PC-relative and in case of linker_addr != load_addr it will result in incorrect value in phys_offset. Signed-off-by: Oleksii Kurochko --- Changes in V3: - save/restore of a0/a1

[PATCH v6 3/6] xen/riscv: introduce decode_cause() stuff

The patch introduces stuff needed to decode a reason of an exception. Signed-off-by: Oleksii Kurochko --- Changes in V6: - Remove usage of LINK_TO_LOAD() due to the MMU being enabled first. - Change early_printk() to printk() --- Changes in V5: - Remove from riscv/traps/c as nothing would

[PATCH v6 0/6] [PATCH v5 0/7] RISCV basic exception handling implementation

mpty headers: and as they are needed to include which provides ARRAY_SIZE and other macros. - Code style fixes. --- Oleksii Kurochko (6): xen/riscv: introduce temporary printk stuff xen/riscv: introduce dummy xen/riscv: introduce decode_cause() stuff xen/riscv: introduce trap_init()

[PATCH v6 2/6] xen/riscv: introduce dummy

will be used in the patch "xen/riscv: introduce decode_cause() stuff" and requires Signed-off-by: Oleksii Kurochko --- Changes in V6: - Nothing changed. Only rebase. --- Changes in V5: * the patch was introduced in the current patch series (V5) --- xen/arch/riscv/include/asm/

[PATCH v6 5/6] xen/riscv: introduce an implementation of macros from

nformation. Signed-off-by: Oleksii Kurochko --- Changes in V6: - Avoid LINK_TO_LOAD() as bug.h functionality expected to be used after MMU is enabled. - Change early_printk() to printk() --- Changes in V5: - Remove "#include " from as there is no any need in it anymo

[PATCH v6 4/6] xen/riscv: introduce trap_init()

Signed-off-by: Oleksii Kurochko Reviewed-by: Alistair Francis --- Changes in V6: - trap_init() is now called after enabling the MMU. - Add additional explanatory comments. --- Changes in V5: - Nothing changed --- Changes in V4: - Nothing changed --- Changes in V3: - Nothing changed

[PATCH v6 1/6] xen/riscv: introduce temporary printk stuff

The patch introdcuces printk related stuff which should be deleted after Xen common code will be available. Signed-off-by: Oleksii Kurochko --- Changes in V6: - the patch was introduced in the current patch series (V6) --- xen/arch/riscv/early_printk.c | 168

[PATCH v6 6/6] xen/riscv: test basic handling stuff

Signed-off-by: Oleksii Kurochko Acked-by: Alistair Francis --- Changes in V6: - Nothing changed --- Changes in V5: - Nothing changed --- Changes in V4: - Add Acked-by: Alistair Francis --- Changes in V3: - Nothing changed --- Changes in V2: - Nothing changed --- xen/arch/riscv

[PATCH v9 0/5] enable MMU for RISC-V

automation: update RISC-V smoke test" from the patch series as it was introduced simplified approach for RISC-V smoke test by Andrew Cooper * Add patch [[xen/riscv: remove dummy_bss variable] as there is no any sense in dummy_bss variable after introduction of inittial page t

[PATCH v9 1/5] xen/riscv: add VM space layout

Also it was added explanation about ignoring of top VA bits Signed-off-by: Oleksii Kurochko --- Changes in V9: - Update comment for VM layout description. --- Changes in V8: - Add "#ifdef RV_STAGE1_MODE == SATP_MODE_SV39" instead of "#ifdef SV39" in the comment to V

[PATCH v9 2/5] xen/riscv: introduce setup_initial_pages

ons for specific section ( such as .text, .rodata, etc ) otherwise RW permission will be set by default. * Add function to check that requested SATP_MODE is supported Origin: g...@github.com:xvisor/xvisor.git 9be2fdd7 Signed-off-by: Oleksii Kurochko Reviewed-by: Jan Beulich --- Changes in V9: - Add &

[PATCH v9 5/5] xen/riscv: remove dummy_bss variable

After introduction of initial pagetables there is no any sense in dummy_bss variable as bss section will not be empty anymore. Signed-off-by: Oleksii Kurochko --- Changes in V9: - Nothing changed. Only rebase --- Changes in V8: - Nothing changed. Only rebase --- Changes in V7: - Nothing

[PATCH v9 3/5] xen/riscv: align __bss_start

.bss section") Signed-off-by: Oleksii Kurochko Reviewed-by: Jan Beulich --- Changes in V9: * Nothing changed. Only rebase. --- Changes in V8: * Remove ". = ALIGN(PAGE_SIZE);" before "*(.bss.page_aligned)" in vmlinux.lds.S file as any contribution to .bss.page_aligned have

[PATCH v9 4/5] xen/riscv: setup initial pagetables

The patch does two thing: 1. Setup initial pagetables. 2. Enable MMU which end up with code in cont_after_mmu_is_enabled() Signed-off-by: Oleksii Kurochko --- Changes in V9: - Nothing changed. Only rebase --- Changes in V8: - Nothing changed. Only rebase --- Changes in V7: - Nothing

[PATCH v1 6/8] xen/riscv: add SPDX tags

Signed-off-by: Oleksii Kurochko --- xen/arch/riscv/include/asm/config.h | 2 ++ xen/arch/riscv/include/asm/current.h | 2 ++ xen/arch/riscv/include/asm/early_printk.h | 2 ++ xen/arch/riscv/include/asm/mm.h | 2 ++ xen/arch/riscv/include/asm/page-bits.h| 2 ++ xen/arch

[PATCH v1 5/8] xen/riscv: introduce identity mapping

The way how switch to virtual address was implemented in the commit e66003e7be ("xen/riscv: introduce setup_initial_pages") wasn't safe enough so identity mapping was introduced and used. Fixes: e66003e7be ("xen/riscv: introduce setup_initial_pages") Signed-off-by: Oleksii Kur

[PATCH v1 0/8] xen/riscv: introduce identity mapping

. * Added __ASSEMBLY__ guards. * move extern of cpu0_boot_stack to a header. The reason for this patch series can be found here: https://lore.kernel.org/xen-devel/4e336121-fc0c-b007-bf7b-430352563...@citrix.com/ Oleksii Kurochko (8): xen/riscv: make sure that identity mapping isn't bigger then page

[PATCH v1 3/8] xen/riscv: introduce reset_stack() function

Signed-off-by: Oleksii Kurochko --- xen/arch/riscv/riscv64/head.S | 8 +++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/xen/arch/riscv/riscv64/head.S b/xen/arch/riscv/riscv64/head.S index 8887f0cbd4..6fb7dd80fd 100644 --- a/xen/arch/riscv/riscv64/head.S +++ b/xen/arch/riscv

[PATCH v1 2/8] xen/riscv: add .sbss section to .bss

Sometimes variables are located in .sbss section but it won't be mapped after MMU will be enabled. To avoid MMU failures .sbss should be mapped Signed-off-by: Oleksii Kurochko --- xen/arch/riscv/xen.lds.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/arch/riscv

[PATCH v1 1/8] xen/riscv: make sure that identity mapping isn't bigger then page size

Signed-off-by: Oleksii Kurochko --- xen/arch/riscv/xen.lds.S | 9 + 1 file changed, 9 insertions(+) diff --git a/xen/arch/riscv/xen.lds.S b/xen/arch/riscv/xen.lds.S index 878130f313..74afbaab9b 100644 --- a/xen/arch/riscv/xen.lds.S +++ b/xen/arch/riscv/xen.lds.S @@ -20,6 +20,7

[PATCH v1 4/8] xen/riscv: introduce function for physical offset calculation

The function was introduced to not calculate and save physical offset before MMU is enabled because access to start() is PC-relative and in case of linker_addr != load_addr it will result in incorrect value in phys_offset. Signed-off-by: Oleksii Kurochko --- xen/arch/riscv/include/asm/mm.h | 2

[PATCH v1 7/8] xen/riscv: add __ASSEMBLY__ guards

Signed-off-by: Oleksii Kurochko --- xen/arch/riscv/include/asm/page.h | 4 1 file changed, 4 insertions(+) diff --git a/xen/arch/riscv/include/asm/page.h b/xen/arch/riscv/include/asm/page.h index 8e8ec9ee36..1c6add70a5 100644 --- a/xen/arch/riscv/include/asm/page.h +++ b/xen/arch/riscv

[PATCH v1 8/8] xen/riscv: move extern of cpu0_boot_stack to header

Signed-off-by: Oleksii Kurochko --- xen/arch/riscv/include/asm/mm.h | 2 ++ xen/arch/riscv/mm.c | 2 -- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/xen/arch/riscv/include/asm/mm.h b/xen/arch/riscv/include/asm/mm.h index 3b04131628..fc3afa5521 100644 --- a/xen/arch

[PATCH v8 5/5] xen/riscv: remove dummy_bss variable

After introduction of initial pagetables there is no any sense in dummy_bss variable as bss section will not be empty anymore. Signed-off-by: Oleksii Kurochko --- Changes in V8: - Nothing changed. Only rebase --- Changes in V7: - Nothing changed. Only rebase --- Changes in V6: - Nothing

[PATCH v8 4/5] xen/riscv: setup initial pagetables

The patch does two thing: 1. Setup initial pagetables. 2. Enable MMU which end up with code in cont_after_mmu_is_enabled() Signed-off-by: Oleksii Kurochko --- Changes in V8: - Nothing changed. Only rebase --- Changes in V7: - Nothing changed. Only rebase --- Changes in V6: - Nothing

[PATCH v8 2/5] xen/riscv: introduce setup_initial_pages

ons for specific section ( such as .text, .rodata, etc ) otherwise RW permission will be set by default. * Add function to check that requested SATP_MODE is supported Origin: g...@github.com:xvisor/xvisor.git 9be2fdd7 Signed-off-by: Oleksii Kurochko --- Changes in V8: - Add parentheses for

[PATCH v8 1/5] xen/riscv: add VM space layout

Also it was added explanation about ignoring of top VA bits Signed-off-by: Oleksii Kurochko --- Changes in V8: - Add "#ifdef RV_STAGE1_MODE == SATP_MODE_SV39" instead of "#ifdef SV39" in the comment to VM layout description. - Update the upper bound of direct m

[PATCH v8 0/5] enable MMU for RISC-V

such section in xen.lds.S * Update the argument of pte_is_valid() to "const pte_t *p" * Remove patch "[PATCH v1 3/3] automation: update RISC-V smoke test" from the patch series as it was introduced simplified approach for RISC-V smoke test by Andrew Cooper * Add patch [

[PATCH v8 3/5] xen/riscv: align __bss_start

.bss section") Signed-off-by: Oleksii Kurochko Reviewed-by: Jan Beulich --- Changes in V8: * Remove ". = ALIGN(PAGE_SIZE);" before "*(.bss.page_aligned)" in vmlinux.lds.S file as any contribution to .bss.page_aligned have to specify proper alignment themselves. * Add

[PATCH v6 0/2] xen/riscv: introduce identity mapping

- use phys_offset variable instead of doing calcultations to get phys offset in head.S file. ( it can be easily done as entire Xen is 1:1 mapped now ) - declare enable_muu() as __init. - Update SPDX tags. - Add Review-By/Suggested-By for some patches. - code style fixes. Oleksii Kuroch

[PATCH v6 2/2] xen/riscv: introduce identity mapping

addresses, identity mapping is removed from page-tables in the following way: search for top-most page table entry and remove it. Fixes: e66003e7be ("xen/riscv: introduce setup_initial_pages") Signed-off-by: Oleksii Kurochko Suggested-by: Andrew Cooper --- Changes in V6: - t2 regist

[PATCH v6 1/2] xen/riscv: introduce function for physical offset calculation

The function was introduced to calculate and save physical offset before MMU is enabled because access to start() is PC-relative and in case of linker_addr != load_addr it will result in incorrect value in phys_offset. Signed-off-by: Oleksii Kurochko --- Changes in V6: - After 9380f06fe8(&quo

[PATCH v7 1/6] xen/riscv: introduce temporary printk stuff

The patch introdcuces printk related stuff which should be deleted after Xen common code will be available. Signed-off-by: Oleksii Kurochko --- Changes in V7: - only rebase was done. --- Changes in V6: - the patch was introduced in the current patch series (V6) --- xen/arch/riscv

[PATCH v7 2/6] xen/riscv: introduce dummy

will be used in the patch "xen/riscv: introduce decode_cause() stuff" and requires Signed-off-by: Oleksii Kurochko --- Changes in V7: - Nothing changed. Only rebase. --- Changes in V6: - Nothing changed. Only rebase. --- Changes in V5: * the patch was introduced in the current pa

[PATCH v7 0/6] RISCV basic exception handling implementation

() to trap_init() and update correspondingly the patches in the patch series. - Refactor bug.h, remove bug_instr_t type from it. - Refactor decode_trap_cause() function to be more optimization-friendly. - Add two new empty headers: and as they are needed to include which provides ARR

[PATCH v7 3/6] xen/riscv: introduce decode_cause() stuff

The patch introduces stuff needed to decode a reason of an exception. Signed-off-by: Oleksii Kurochko --- Changes in V7: - Nothing changed. Only rebase. --- Changes in V6: - Remove usage of LINK_TO_LOAD() due to the MMU being enabled first. - Change early_printk() to printk() --- Changes

[PATCH v7 6/6] xen/riscv: test basic handling stuff

Signed-off-by: Oleksii Kurochko Acked-by: Alistair Francis --- Changes in V6: - Nothing changed. Only rebase. --- Changes in V6: - Nothing changed --- Changes in V5: - Nothing changed --- Changes in V4: - Add Acked-by: Alistair Francis --- Changes in V3: - Nothing changed --- Changes

[PATCH v7 5/6] xen/riscv: introduce an implementation of macros from

nformation. Signed-off-by: Oleksii Kurochko --- Changes in V7: - move to this patch the definition of cast_to_bug_frame() from the previous patch. - update the comment in bug.h. - update the comment above do_bug_frame(). - fix code style. - add comment to read_instr func. - add space for

[PATCH v7 4/6] xen/riscv: introduce trap_init()

Signed-off-by: Oleksii Kurochko Reviewed-by: Alistair Francis --- Changes in V7: - #define cast_to_bug_frame(addr) ((const struct bug_frame *)(addr)). - remove unnecessary comments in trap_init() function. --- Changes in V6: - trap_init() is now called after enabling the MMU. - Add

[PATCH v4 2/2] xen/riscv: introduce identity mapping

age-tables in the following way: recursively visit all ptes related to identity mapping and remove them. Fixes: e66003e7be ("xen/riscv: introduce setup_initial_pages") Signed-off-by: Oleksii Kurochko Suggested-by: Andrew Cooper --- Changes in V4: - remove definition of ARRAY_SIZE and ROUNDU

[PATCH v4 0/2] xen/riscv: introduce identity mapping

doing calcultations to get phys offset in head.S file. ( it can be easily done as entire Xen is 1:1 mapped now ) - declare enable_muu() as __init. - Update SPDX tags. - Add Review-By/Suggested-By for some patches. - code style fixes. Oleksii Kurochko (2): xen/riscv: introduce fun

[PATCH v4 1/2] xen/riscv: introduce function for physical offset calculation

The function was introduced to calculate and save physical offset before MMU is enabled because access to start() is PC-relative and in case of linker_addr != load_addr it will result in incorrect value in phys_offset. Signed-off-by: Oleksii Kurochko --- Changes in V4: - update the comment

[PATCH v5 2/2] xen/riscv: introduce identity mapping

addresses, identity mapping is removed from page-tables in the following way: search for top-most page table entry and remove it. Fixes: e66003e7be ("xen/riscv: introduce setup_initial_pages") Signed-off-by: Oleksii Kurochko Suggested-by: Andrew Cooper --- Changes in V5: - update

[PATCH v5 1/2] xen/riscv: introduce function for physical offset calculation

The function was introduced to calculate and save physical offset before MMU is enabled because access to start() is PC-relative and in case of linker_addr != load_addr it will result in incorrect value in phys_offset. Signed-off-by: Oleksii Kurochko --- Changes in V5: - update prototype

[PATCH v5 0/2] xen/riscv: introduce identity mapping

d now ) - declare enable_muu() as __init. - Update SPDX tags. - Add Review-By/Suggested-By for some patches. - code style fixes. Oleksii Kurochko (2): xen/riscv: introduce function for physical offset calculation xen/riscv: introduce identity mapping xen/arch/riscv/include/asm/config.h | 2 +

[PATCH v4 1/1] ns16550: add support for polling mode when device tree is used

s in Linux kernel ), so the check of the return value of platform_get_irq() was updated in case of when device tree is used for UART initialization. For example: https://github.com/torvalds/linux/blob/master/arch/powerpc/boot/dts/ebony.dts#L197 Signed-off-by: Oleksii Kurochko --- Changes in V4:

[PATCH v3] ns16550: add support for polling mode when device tree is used

( according to dts files in Linux kernel ), so the check of the return value of platform_get_irq() was updated in case of when device tree is used for UART initialization. For example: https://github.com/torvalds/linux/blob/master/arch/powerpc/boot/dts/ebony.dts#L197 Signed-off-by: Oleksii Kurochko

[PATCH v8 1/6] xen/riscv: introduce temporary printk stuff

The patch introdcuces printk related stuff which should be deleted after Xen common code will be available. Signed-off-by: Oleksii Kurochko --- Changes in V8: - only rebase was done. --- Changes in V7: - only rebase was done. --- Changes in V6: - the patch was introduced in the current patch

[PATCH v8 6/6] xen/riscv: test basic handling stuff

Signed-off-by: Oleksii Kurochko Acked-by: Alistair Francis --- Changes in V8: - Nothing changed. Only rebase. --- Changes in V6: - Nothing changed. Only rebase. --- Changes in V6: - Nothing changed --- Changes in V5: - Nothing changed --- Changes in V4: - Add Acked-by: Alistair Francis

[PATCH v8 0/6] RISCV basic exception handling implementation

and as they are needed to include which provides ARRAY_SIZE and other macros. - Code style fixes. --- Oleksii Kurochko (6): xen/riscv: introduce temporary printk stuff xen/riscv: introduce xen/riscv: introduce decode_cause() stuff xen/riscv: introduce trap_init() xen/ri

[PATCH v8 3/6] xen/riscv: introduce decode_cause() stuff

The patch introduces stuff needed to decode a reason of an exception. Signed-off-by: Oleksii Kurochko Acked-by: Alistair Francis --- Changes in V8: - fix typo in return string from decode_reserved_interrupt_cause - add Acked-by: Alistair Francis --- Changes in V7: - Nothing changed. Only

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