linux-kernel - Re: [PATCH v7 0/8] KVM: allow mapping non-refcounted pages

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Message-ID: <ZM2AD26Mp31tHuH9@google.com>
Date:   Fri, 4 Aug 2023 15:47:43 -0700
From:   Sean Christopherson <seanjc@...gle.com>
To:     David Stevens <stevensd@...omium.org>
Cc:     Marc Zyngier <maz@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Peter Xu <peterx@...hat.com>,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        kvm@...r.kernel.org
Subject: Re: [PATCH v7 0/8] KVM: allow mapping non-refcounted pages

On Tue, Jul 04, 2023, David Stevens wrote:
> From: David Stevens <stevensd@...omium.org>
> 
> This patch series adds support for mapping VM_IO and VM_PFNMAP memory
> that is backed by struct pages that aren't currently being refcounted
> (e.g. tail pages of non-compound higher order allocations) into the
> guest.

Aplogies for the slow review, I'm done with feedback for this version.

FWIW, it's probably too bit late to catch 6.6, especially since we need acks from
ARM and PPC, but 6.7 should be very doable unless someone outright objects.

Thanks for being persistent!