Re: [PATCH v2 0/5] mm: arch/shstk: Common shadow stack mapping helper and VM_NOHUGEPAGE

[Mike Rapoport <rppt@kernel.org>]

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.