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

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Date:   Wed, 13 Oct 2021 09:01:24 +0000
From:   Justin He <Justin.He@....com>
To:     Marc Zyngier <maz@...nel.org>
CC:     James Morse <James.Morse@....com>,
        Alexandru Elisei <Alexandru.Elisei@....com>,
        Suzuki Poulose <Suzuki.Poulose@....com>,
        Oliver Upton <oupton@...gle.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" <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" <kvmarm@...ts.cs.columbia.edu>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>, nd <nd@....com>
Subject: RE: [PATCH v2 2/2] KVM: arm64: Add memcg accounting to KVM
 allocations

Hi Marc

> -----Original Message-----
> From: Oliver Upton <oupton@...gle.com>
> Sent: Monday, September 13, 2021 8:21 PM
> To: Justin He <Justin.He@....com>
> Cc: Marc Zyngier <maz@...nel.org>; James Morse <James.Morse@....com>;
> Alexandru Elisei <Alexandru.Elisei@....com>; Suzuki 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 2/2] KVM: arm64: Add memcg accounting to KVM
> allocations
> 
[...]
> > Do you mean kvm_hyp_zalloc_page() here?
> > Seems kvm_hyp_zalloc_page() is in both global and VM scopes.
> 
> Doh! kvm_hyp_zalloc_page() is only for the hyp's page tables, hence I
> believe your patch is correct as it stands. As such:
> 
> Reviewed-by: Oliver Upton <oupton@...gle.com>
Kindly ping for the whole series. 😉

--
Cheers,
Justin (Jia He)