On Wed, Feb 25, 2026 at 04:13:57PM +0000, Catalin Marinas wrote:
> This is v2 of the series extracting the common shadow stack mmap into a
> separate helper for arm64, riscv and x86. Thanks for the review.
>
> Andrew, if you are happy with this, I think taking the patches through
> the mm tree makes most sense.
>
> Minor changes since v1:
>
> - Removed #ifdef from the helper function declaration
> - Used two tabs for the alignment of multi-line function arguments
> - Added "There is no functional change" to the arch patches log
> - Collected ack/review/test tags
>
> v1:
>
> https://lore.kernel.org/r/20260224175800.2500729-1-catalin.marinas@arm.com
>
> Catalin Marinas (5):
> mm: Introduce vm_mmap_shadow_stack() as a helper for VM_SHADOW_STACK
> mappings
> arm64: gcs: Use the new common vm_mmap_shadow_stack() helper
> riscv: shstk: Use the new common vm_mmap_shadow_stack() helper
> x86: shstk: Use the new common vm_mmap_shadow_stack() helper
> mm: Do not map the shadow stack as THP
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
> arch/arm64/mm/gcs.c | 14 +-------------
> arch/riscv/kernel/usercfi.c | 12 +-----------
> arch/x86/kernel/shstk.c | 12 ++----------
> include/linux/mm.h | 2 ++
> mm/util.c | 29 +++++++++++++++++++++++++++++
> 5 files changed, 35 insertions(+), 34 deletions(-)
>
>
--
Sincerely yours,
Mike.