linux-kernel - Re: [PATCH] KVM: x86: fix DR6 delivery for emulated hardware breakpoint

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Date:   Tue, 5 May 2020 10:15:41 -0400
From:   Peter Xu <peterx@...hat.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        jmattson@...gle.com
Subject: Re: [PATCH] KVM: x86: fix DR6 delivery for emulated hardware
 breakpoint

On Tue, May 05, 2020 at 07:34:49AM -0400, Paolo Bonzini wrote:
> Go through kvm_queue_exception_p so that the payload is correctly delivered
> through the exit qualification, and add a kvm_update_dr6 call to
> kvm_deliver_exception_payload that is needed on AMD.
> 
> Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>

I still think we could also change this in handle_exception_nmi() and
handle_dr() as mentioned in the other thread, but no strong opinion:

Reviewed-by: Peter Xu <peterx@...hat.com>

Thanks,

-- 
Peter Xu