Messages in this thread | | | From | "Huang, Kai" <> | Subject | Re: [PATCH v11 19/20] x86/mce: Improve error log of kernel space TDX #MC due to erratum | Date | Mon, 5 Jun 2023 23:05:34 +0000 |
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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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