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Re: [PATCH v3] x86/msr: handle reads to MSR_P5_MC_{ADDR,TYPE}
- To: Roger Pau Monne <roger.pau@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 28 Apr 2022 13:39:22 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Steffen Einsle <einsle@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 28 Apr 2022 11:39:37 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 28.04.2022 13:20, Roger Pau Monne wrote:
> Windows Server 2019 Essentials will unconditionally attempt to read
> P5_MC_ADDR MSR at boot and throw a BSOD if injected a #GP.
>
> Fix this by mapping MSR_P5_MC_{ADDR,TYPE} to
> MSR_IA32_MCi_{ADDR,STATUS}, as reported also done by hardware in Intel
> SDM "Mapping of the Pentium Processor Machine-Check Errors to the
> Machine-Check Architecture" section.
>
> Reported-by: Steffen Einsle <einsle@xxxxxxxxxx>
> Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
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