| Date | Fri, 9 Apr 2021 18:10:10 +0300 | From | "Kirill A. Shutemov" <> | Subject | Re: [PATCH v24 13/30] mm: Introduce VM_SHADOW_STACK for shadow stack memory |
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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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