Messages in this thread | | | Date | Thu, 8 Apr 2021 10:17:40 +0200 | From | Borislav Petkov <> | Subject | Re: [RFC Part1 PATCH 07/13] x86/compressed: register GHCB memory when SNP is active |
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On Wed, Apr 07, 2021 at 12:34:59PM -0500, Brijesh Singh wrote: > The feature is part of the GHCB version 2 and is enforced by the > hypervisor. I guess it can be extended for the ES. Since this feature > was not available in GHCB version 1 (base ES) so it should be presented > as an optional for the ES ?
Yeah, it probably is not worth the effort. If an attacker controls the guest kernel, then it can re-register a new GHCB so it doesn't really matter.
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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