| Subject | Re: [RFC v2 16/32] x86/tdx: Handle MWAIT, MONITOR and WBINVD | From | Dave Hansen <> | Date | Tue, 11 May 2021 08:53:24 -0700 |
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On 4/26/21 11:01 AM, Kuppuswamy Sathyanarayanan wrote: > For WBIND instruction, since it's related to memory writeback
^ WBINVD
> and cache flushes, it's mainly used in context of IO devices. Since > TDX 1.0 does not support non-virtual I/O devices, skipping it should > not cause any fatal issues. But Do me a favor:
grep -ri wbinvd arch/x86/
How many I/O devices do you see?
Please get your ducks in a row here. Come up with a coherent changelog about why the arch/x86 use of WBINVD doesn't apply to TDX guests. Explain the audit that you did. You *DID* do an audit, right?
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