Messages in this thread | | | Subject | Re: [PATCH Part1 v5 11/38] x86/compressed: Add helper for validating pages in the decompression stage | From | Brijesh Singh <> | Date | Mon, 23 Aug 2021 13:55:16 -0500 |
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On 8/23/21 9:16 AM, Borislav Petkov wrote: > On Fri, Aug 20, 2021 at 10:19:06AM -0500, Brijesh Singh wrote: >> diff --git a/arch/x86/include/asm/sev-common.h b/arch/x86/include/asm/sev-common.h >> index d426c30ae7b4..1cd8ce838af8 100644 >> --- a/arch/x86/include/asm/sev-common.h >> +++ b/arch/x86/include/asm/sev-common.h >> @@ -57,6 +57,26 @@ >> #define GHCB_MSR_AP_RESET_HOLD_REQ 0x006 >> #define GHCB_MSR_AP_RESET_HOLD_RESP 0x007 >> >> +/* SNP Page State Change */ > > Let's make it very clear here that those cmd numbers below are actually > part of the protocol and not randomly chosen: > > /* > * ... > * > * 0x014 – SNP Page State Change Request > * > * GHCBData[55:52] – Page operation: > * 0x0001 – Page assignment, Private > * 0x0002 – Page assignment, Shared > */ >
Noted.
thanks
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