Re: [PATCH hyperv-next v4 04/16] arch/x86: mshyperv: Trap on access for some synthetic MSRs

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On Tue, Jul 15, 2025 at 6:16 AM Roman Kisel <romank@xxxxxxxxxxxxxxxxxxx> wrote:
>
> hv_set_non_nested_msr() has special handling for SINT MSRs
> when a paravisor is present. In addition to updating the MSR on the
> host, the mirror MSR in the paravisor is updated, including with the
> proxy bit. But with Confidential VMBus, the proxy bit must not be
> used, so add a special case to skip it.
>
> Update the hv_set_non_nested_msr() function as well as
> vmbus_signal_eom() to trap on access for some synthetic MSRs.
>
> Signed-off-by: Roman Kisel <romank@xxxxxxxxxxxxxxxxxxx>
> Reviewed-by: Alok Tiwari <alok.a.tiwari@xxxxxxxxxx>
> ---

Reviewed-by: Tianyu Lan <tiala@xxxxxxxxxxxxx>

-- 
Thanks
Tianyu Lan





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