linux-kernel - Re: [PATCH v4 05/13] KVM: pfncache: allow a cache to be activated with a fixed (userspace) HVA

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Message-ID: <7fd349af-6a98-08cf-864f-7116d32c0400@xen.org>
Date:   Tue, 19 Sep 2023 15:22:49 +0100
From:   Paul Durrant <xadimgnik@...il.com>
To:     David Woodhouse <dwmw2@...radead.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 v4 05/13] KVM: pfncache: allow a cache to be activated
 with a fixed (userspace) HVA

On 19/09/2023 15:20, David Woodhouse wrote:
> On Tue, 2023-09-19 at 13:41 +0000, Paul Durrant wrote:
>> From: Paul Durrant <pdurrant@...zon.com>
>>
>> Some cached pages may actually be overlays on guest memory that have a
>> fixed HVA within the VMM. It's pointless to invalidate such cached
>> mappings if the overlay is moved so allow a cache to be activated directly
>> with the HVA to cater for such cases. A subsequent patch will make use
>> of this facility.
>>
>> Signed-off-by: Paul Durrant <pdurrant@...zon.com>
> 
> I think I gave you one of these in a previous round, but
> 
> Reviewed-by: David Woodhouse <dwmw@...zon.co.uk>
> 

Yes. Apologies. You gave it on v2; I definitely have it now.

   Paul