linux-kernel - Re: [PATCH v2 1/2] KVM: arm64: vgic: Add memcg accounting to vgic allocations

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Message-ID: <CAOQ_QshwO2AtzKTNZJ1FXWTuvdvnxnLQxej1UpLAqVrJC_oCgw@mail.gmail.com>
Date:   Tue, 7 Sep 2021 20:21:40 -0500
From:   Oliver Upton <oupton@...gle.com>
To:     Jia He <justin.he@....com>
Cc:     Marc Zyngier <maz@...nel.org>, James Morse <james.morse@....com>,
        Alexandru Elisei <Alexandru.Elisei@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Xiaoming Ni <nixiaoming@...wei.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Kees Cook <keescook@...omium.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        linux-kernel@...r.kernel.org, Liu Shixin <liushixin2@...wei.com>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        Will Deacon <will@...nel.org>, kvmarm@...ts.cs.columbia.edu,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 1/2] KVM: arm64: vgic: Add memcg accounting to vgic allocations

On Tue, Sep 7, 2021 at 7:33 AM Jia He <justin.he@....com> wrote:
>
> Inspired by commit 254272ce6505 ("kvm: x86: Add memcg accounting to KVM
> allocations"), it would be better to make arm64 vgic consistent with
> common kvm codes.
>
> The memory allocations of VM scope should be charged into VM process
> cgroup, hence change GFP_KERNEL to GFP_KERNEL_ACCOUNT.
>
> There remain a few cases since these allocations are global, not in VM
> scope.
>
> Signed-off-by: Jia He <justin.he@....com>
> ---
>  arch/arm64/kvm/vgic/vgic-init.c    |  2 +-
>  arch/arm64/kvm/vgic/vgic-irqfd.c   |  2 +-
>  arch/arm64/kvm/vgic/vgic-its.c     | 14 +++++++-------
>  arch/arm64/kvm/vgic/vgic-mmio-v3.c |  2 +-
>  arch/arm64/kvm/vgic/vgic-v4.c      |  2 +-
>  5 files changed, 11 insertions(+), 11 deletions(-)
>

Reviewed-by: Oliver Upton <oupton@...gle.com>