Re: [RFC v2 16/32] x86/tdx: Handle MWAIT, MONITOR and WBINVD
From: Dave Hansen
Date: Tue May 11 2021 - 11:53:35 EST
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?