Re: [PATCH 20/35] mm: Update can_follow_write_pte() for shadow stack
From: Dave Hansen <hidden>
Date: 2022-02-09 22:52:17
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On 1/30/22 13:18, Rick Edgecombe wrote:
Like a writable data page, a shadow stack page is writable, and becomes read-only during copy-on-write, but it is always dirty.
One other thing... The language in these changelogs is a bit sloppy. For instance, what does "always dirty" mean here? pte_dirty()? Or strictly _PAGE_DIRTY? In other words, logically dirty, or literally "has *the* dirty bit set"?