linux-kernel - Re: [PATCH v3] KVM: selftests: Test TPR / CR8 sync and interrupt masking

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Message-ID: <ad3b910a-ff83-4738-888b-5432d09de073@maciej.szmigiero.name>
Date: Fri, 17 Oct 2025 15:51:22 +0200
From: "Maciej S. Szmigiero" <mail@...iej.szmigiero.name>
To: Paolo Bonzini <pbonzini@...hat.com>,
 Sean Christopherson <seanjc@...gle.com>
Cc: Naveen N Rao <naveen@...nel.org>, Maxim Levitsky <mlevitsk@...hat.com>,
 Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>,
 Alejandro Jimenez <alejandro.j.jimenez@...cle.com>, kvm@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] KVM: selftests: Test TPR / CR8 sync and interrupt
 masking

On 25.09.2025 12:43, Naveen N Rao wrote:
> On Tue, Sep 23, 2025 at 07:32:14PM +0200, Maciej S. Szmigiero wrote:
>> From: "Maciej S. Szmigiero" <maciej.szmigiero@...cle.com>
>>
>> Add a few extra TPR / CR8 tests to x86's xapic_state_test to see if:
>> * TPR is 0 on reset,
>> * TPR, PPR and CR8 are equal inside the guest,
>> * TPR and CR8 read equal by the host after a VMExit
>> * TPR borderline values set by the host correctly mask interrupts in the
>> guest.
>>
>> These hopefully will catch the most obvious cases of improper TPR sync or
>> interrupt masking.
>>
>> Do these tests both in x2APIC and xAPIC modes.
>> The x2APIC mode uses SELF_IPI register to trigger interrupts to give it a
>> bit of exercise too.
>>
>> Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@...cle.com>
> 
> Acked-by: Naveen N Rao (AMD) <naveen@...nel.org>
> 

Was this patch picked up or are there any other review comments here?
I can't seem to find it in any KVM upstream tree.

Thanks,
Maciej