Messages in this thread | | | Date | Tue, 17 Aug 2021 22:44:48 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH Part1 RFC v4 15/36] x86/mm: Add support to validate memory when changing C-bit |
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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.
Thx.
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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