Messages in this thread | | | From | "Edgecombe, Rick P" <> | Subject | Re: [PATCH v7 22/41] mm/mmap: Add shadow stack pages to memory accounting | Date | Mon, 6 Mar 2023 18:11:32 +0000 |
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On Mon, 2023-03-06 at 14:01 +0100, Borislav Petkov wrote: > 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.
Before this version it was open coded, but David Hildenbrand suggested this is_stack_mapping() solution. Should it be explained more, or just dropped?
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