Messages in this thread | | | Date | Tue, 24 Jan 2023 23:37:46 +1100 | Subject | Re: [PATCH kernel v3 3/3] x86/sev: Do not handle #VC for DR7 read/write | From | Alexey Kardashevskiy <> |
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On 24/1/23 21:37, Nikunj A. Dadhania wrote:>> It is MSR_AMD64_SEV_DEBUG_SWAP (SEV, not SNP), it is an SEV-ES thing.> Yes, noticed that, earlier analysis was that Debug Swap shouldn't need any guest side changes, but it does need it.>>> Why is that feature negotiation SNP-only and not SEV?> > As per the spec, GHCB termination request: reason code: 0x2 is SNP features specific. Does the guest really need to terminate in such case? A VM could just not do the GHCB thing if it does not want to.
-- Alexey
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