linux-kernel - Re: [PATCH v6 3/4] KVM: x86/mmu: count KVM mmu usage in secondary pagetable stats.

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Date:   Thu, 7 Jul 2022 21:11:26 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Yosry Ahmed <yosryahmed@...gle.com>
Cc:     Tejun Heo <tj@...nel.org>, Johannes Weiner <hannes@...xchg.org>,
        Zefan Li <lizefan.x@...edance.com>,
        Marc Zyngier <maz@...nel.org>,
        James Morse <james.morse@....com>,
        Alexandru Elisei <alexandru.elisei@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...nel.org>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Shakeel Butt <shakeelb@...gle.com>,
        Oliver Upton <oupton@...gle.com>, Huang@...gle.com,
        Shaoqin <shaoqin.huang@...el.com>, cgroups@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kvmarm@...ts.cs.columbia.edu, kvm@...r.kernel.org,
        linux-mm@...ck.org
Subject: Re: [PATCH v6 3/4] KVM: x86/mmu: count KVM mmu usage in secondary
 pagetable stats.

On Tue, Jun 28, 2022, Yosry Ahmed wrote:
> Count the pages used by KVM mmu on x86 in memory stats under secondary
> pagetable stats (e.g. "SecPageTables" in /proc/meminfo) to give better
> visibility into the memory consumption of KVM mmu in a similar way to
> how normal user page tables are accounted.
> 
> Signed-off-by: Yosry Ahmed <yosryahmed@...gle.com>
> ---

Reviewed-by: Sean Christopherson <seanjc@...gle.com>