Re: [PATCH v11 19/20] x86/mce: Improve error log of kernel space TDX #MC due to erratum

[Huang, Kai]

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.