| Date | Wed, 5 Oct 2022 13:33:02 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v2 10/39] x86/mm: Introduce _PAGE_COW |
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On Thu, Sep 29, 2022 at 03:29:07PM -0700, Rick Edgecombe wrote:
Mucho confusion here:
> (a) (Write=0,Cow=1,Dirty=0) A modified, copy-on-write (COW) page. > (b) (Write=0,Cow=1,Dirty=0) A R/O page that has been COW'ed. The user page > (d) (Write=0,Cow=1,Dirty=0) A shared shadow stack PTE. When a shadow stack
are all identical cases;
> (c) (Write=0,Cow=0,Dirty=1) A shadow stack PTE. > (e) (Write=0,Cow=0,Dirty=1) A Cow PTE created when a processor without
as are these.
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