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SubjectRe: [PATCH Part1 RFC v4 15/36] x86/mm: Add support to validate memory when changing C-bit
On Tue, Aug 17, 2021 at 03:34:41PM -0500, Brijesh Singh wrote:
> I am not seeing any strong reason to sanity check the reserved bit in the
> psc_entry. The fields in the psc_entry are input from guest to the
> hypervisor. The hypervisor cannot trick a guest by changing anything in the
> psc_entry because guest does not read the hypervisor filled value. I am okay
> with the psc_hdr because we need to read the current and end entry after the
> PSC completes to determine whether it was successful and sanity checking PSC
> header makes much more sense. Let me know if you are okay with it ?

Ok, fair enough.



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