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SubjectRe: [PATCH v11 19/20] x86/mce: Improve error log of kernel space TDX #MC due to erratum
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On Mon, 2023-06-05 at 10:13 +0800, Li, Xiaoyao wrote:
> On 6/4/2023 10:27 PM, Kai Huang wrote:
> > == Problem ==
> >
> > A partial write to a TDX private memory cacheline will silently "poison"
> > the line. Subsequent reads will consume the poison and generate a
> > machine check. According to the TDX hardware spec, neither of these
> > things should have happened.
>
> The expectation is that write to TDX private memory with HKID 0 doesn't
> poison the cache line. However, a partial write with HKID 0 does poison
> the cache line. This is the erratum, right?
>

Yes.
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