linux-kernel - Re: [PATCH v3 12/13] KVM: selftests / xen: don't explicitly set the vcpu

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Message-ID: <5787ee4cc9b2a3aab21c0cf052d4508e34b8690d.camel@infradead.org>
Date:   Mon, 18 Sep 2023 17:10:10 +0100
From:   David Woodhouse <dwmw2@...radead.org>
To:     Paul Durrant <paul@....org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Paul Durrant <pdurrant@...zon.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>
Subject: Re: [PATCH v3 12/13] KVM: selftests / xen: don't explicitly set the
 vcpu_info address

On Mon, 2023-09-18 at 14:41 +0000, Paul Durrant wrote:
> From: Paul Durrant <pdurrant@...zon.com>
> 
> If the vCPU id is set and the shared_info is mapped using HVA then we can
> infer that KVM has the ability to use a default vcpu_info mapping. Hence
> we can stop setting the address of the vcpu_info structure.
> 
> NOTE: We still explicitly set vcpu_info half way through testing (to point
>       at exactly the place it already is) to make sure that setting the
>       attribute does not fail.
> 
> Signed-off-by: Paul Durrant <pdurrant@...zon.com>

Reviewed-by: David Woodhouse <dwmw@...zon.co.uk>




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