Messages in this thread | | | Date | Tue, 24 Jan 2023 16:07:46 +0530 | Subject | Re: [PATCH kernel v3 3/3] x86/sev: Do not handle #VC for DR7 read/write | From | "Nikunj A. Dadhania" <> |
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On 20/01/23 15:53, Alexey Kardashevskiy 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.
Regards Nikunj
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