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| author |   Jisheng Zhang <jszhang@kernel.org> | 2025-04-26 21:59:54 +0800 |
|---|---|---|
| committer |   Palmer Dabbelt <palmer@dabbelt.com> | 2025-06-05 14:03:08 -0700 |
| commit | a869b8c29f864b9530a6473a30c09546333b571a (patch) | |
| tree | 1dc9285111c469e74203a6bc21a86ab7dca5fd58 /arch | |
| parent | raid6: Add RISC-V SIMD syndrome and recovery calculations (diff) | |
| download | linux-rng-a869b8c29f864b9530a6473a30c09546333b571a.tar.xz linux-rng-a869b8c29f864b9530a6473a30c09546333b571a.zip | |
riscv: enable mseal sysmap for RV64
Provide support for CONFIG_MSEAL_SYSTEM_MAPPINGS for RV64, covering the
vdso, vvar.
Passed sysmap_is_sealed and mseal_test self tests.
Passed booting a buildroot rootfs image and a cli debian rootfs image.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Cc: Jeff Xu <jeffxu@chromium.org>
Link: https://lore.kernel.org/r/20250426135954.5614-1-jszhang@kernel.org
Tested-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/riscv/Kconfig | 1 | ||||
| -rw-r--r-- | arch/riscv/kernel/vdso.c | 2 |
2 files changed, 2 insertions, 1 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index bbec87b79309..3cb0b05eef62 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -70,6 +70,7 @@ config RISCV # LLD >= 14: https://github.com/llvm/llvm-project/issues/50505 select ARCH_SUPPORTS_LTO_CLANG if LLD_VERSION >= 140000 select ARCH_SUPPORTS_LTO_CLANG_THIN if LLD_VERSION >= 140000 + select ARCH_SUPPORTS_MSEAL_SYSTEM_MAPPINGS if 64BIT && MMU select ARCH_SUPPORTS_PAGE_TABLE_CHECK if MMU select ARCH_SUPPORTS_PER_VMA_LOCK if MMU select ARCH_SUPPORTS_RT diff --git a/arch/riscv/kernel/vdso.c b/arch/riscv/kernel/vdso.c index cc2895d1fbc2..3a8e038b10a2 100644 --- a/arch/riscv/kernel/vdso.c +++ b/arch/riscv/kernel/vdso.c @@ -136,7 +136,7 @@ static int __setup_additional_pages(struct mm_struct *mm, ret = _install_special_mapping(mm, vdso_base, vdso_text_len, - (VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC), + (VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC | VM_SEALED_SYSMAP), vdso_info->cm); if (IS_ERR(ret)) |