Re: [PATCH v7 22/41] mm/mmap: Add shadow stack pages to memory accounting

Borislav Petkov
2023-03-06T13:01:59Z

On Mon, Feb 27, 2023 at 02:29:38PM -0800, Rick Edgecombe wrote:
> From: Yu-cheng Yu <yu-cheng.yu@intel.com>
>
> The x86 Control-flow Enforcement Technology (CET) feature includes a new
> type of memory called shadow stack. This shadow stack memory has some
> unusual properties, which requires some core mm changes to function
> properly.
>
> Account shadow stack pages to stack memory. Do this by adding a
> VM_SHADOW_STACK check in is_stack_mapping().

That last sentence is superfluous.

--
Regards/Gruss,
Boris.