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[209.85.220.65]) by mx.google.com with SMTPS id b23-v6sor1152071pgn.1.2018.06.27.11.13.56 for (Google Transport Security); Wed, 27 Jun 2018 11:13:56 -0700 (PDT) Received-SPF: pass (google.com: domain of shakeelb@google.com designates 209.85.220.65 as permitted sender) client-ip=209.85.220.65; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20161025 header.b=czjRAU3B; spf=pass (google.com: domain of shakeelb@google.com designates 209.85.220.65 as permitted sender) smtp.mailfrom=shakeelb@google.com; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=v+4dp/BOvsFqHFx3yUzsYGxGxEU+qdmgbrrREHhz6Co=; b=czjRAU3BQLur05AcJMzW+DUB9nDAhrjJRuxtiJdpERQlzv7KZr6JnPqODYZsM7qeh2 8vMi3bLBOxjxgtonJwi3bgojB4KpSqJsnJBbBI5mYv1xd3SxCD/fCIMbcxMdXzdZEiUY WSniOa8dARB2CrUM5666TIGl1ldIoKO3K+OUrZslzx2LwcKN9/yEVFNNTwVZguaUzf6n 9d4GnC5M/j/EOTH3Ab/uvGmutNpLi7OYESCVQQOw9amMdBun4VcjZL436obKWoqh2eKH ZCft8kkXy+JqZZSRZoSqx9tpsGEopbeRAU5qT8VusESnQhRUCl5Ym1YLz7jtroEBTTbD Mngw== X-Google-Smtp-Source: ADUXVKJXUK8G1lHWBbxsZ9sS18sDBlotoR24L0kb1MSoSybzk9GwHFUcVxvXPHEmhAdUbl4r3aCq4w== X-Received: by 2002:a65:4c02:: with SMTP id u2-v6mr6247278pgq.364.1530123236062; Wed, 27 Jun 2018 11:13:56 -0700 (PDT) Received: from shakeelb.mtv.corp.google.com ([2620:15c:2cb:201:3a5f:3a4f:fa44:6b63]) by smtp.gmail.com with ESMTPSA id h8-v6sm6309728pgq.35.2018.06.27.11.13.54 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 27 Jun 2018 11:13:54 -0700 (PDT) From: Shakeel Butt To: Andrew Morton Cc: Michal Hocko , Johannes Weiner , Vladimir Davydov , Paolo Bonzini , Greg Thelen , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , Peter Feiner , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-mm@kvack.org, Shakeel Butt Subject: [PATCH] kvm, mm: account shadow page tables to kmemcg Date: Wed, 27 Jun 2018 11:13:49 -0700 Message-Id: <20180627181349.149778-1-shakeelb@google.com> X-Mailer: git-send-email 2.18.0.rc2.346.g013aa6912e-goog X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: X-Virus-Scanned: ClamAV using ClamSMTP The size of kvm's shadow page tables corresponds to the size of the guest virtual machines on the system. Large VMs can spend a significant amount of memory as shadow page tables which can not be left as system memory overhead. So, account shadow page tables to the kmemcg. Signed-off-by: Shakeel Butt --- arch/x86/kvm/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index d594690d8b95..c79a398300f5 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -890,7 +890,7 @@ static int mmu_topup_memory_cache_page(struct kvm_mmu_memory_cache *cache, if (cache->nobjs >= min) return 0; while (cache->nobjs < ARRAY_SIZE(cache->objects)) { - page = (void *)__get_free_page(GFP_KERNEL); + page = (void *)__get_free_page(GFP_KERNEL|__GFP_ACCOUNT); if (!page) return -ENOMEM; cache->objects[cache->nobjs++] = page;