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SubjectRe: [PATCH v24 13/30] mm: Introduce VM_SHADOW_STACK for shadow stack memory
On Thu, Apr 01, 2021 at 03:10:47PM -0700, Yu-cheng Yu wrote:
> A shadow stack PTE must be read-only and have _PAGE_DIRTY set. However,
> read-only and Dirty PTEs also exist for copy-on-write (COW) pages. These
> two cases are handled differently for page faults. Introduce
> VM_SHADOW_STACK to track shadow stack VMAs.
>
> Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
> Cc: Kees Cook <keescook@chromium.org>

Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>

--
Kirill A. Shutemov

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