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[209.85.220.65]) by mx.google.com with SMTPS id l27-v6sor283057pfk.134.2018.06.29.07.02.34 for (Google Transport Security); Fri, 29 Jun 2018 07:02:35 -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=BtOwTi8S; 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:mime-version :content-transfer-encoding; bh=Uvosgf1N9qtGxuTqtWVf314atLsMKNgXkNX+PFJWIEg=; b=BtOwTi8SZ5Zdw44f+OHljBuo5QTixt4B6M4XLNtGqbWWZryS4fSRp1W16Vk/onn7xL sTZgRTsAKUah8X5P9ACqMnuIqiYAO2dULGQ09Y7zQIWYXIk8mJP7GzF1b5P14p1VxN2H wIevw27bI4UPskzi6gTUxwNzybOROW/Fh3sYJkgNJXlBOOZbnNqlZcGpj7vbNzrLo/+7 fAUoe2dc3goyLrAGU3X7JuHLzXt5Ll2b6Krp+rwZTOaxFV4hCr2MQv3F4ZhldSvZulnW mIWS7BSXgMETBaOB0x9Y0q2BCbaACgLJ+rS12wwFdOki3F0XApVCP/eIs8uFpcIfTHrf aVfw== X-Google-Smtp-Source: AAOMgpfWU3mOSkcge8aysMCz/fqJzVgO7PoraqP3SShv2ewf/C8YDgDIfDNXtx4PYutfqvGKbU9hgg== X-Received: by 2002:a62:484d:: with SMTP id v74-v6mr14736989pfa.256.1530280954093; Fri, 29 Jun 2018 07:02:34 -0700 (PDT) Received: from shakeelb.mtv.corp.google.com ([2620:15c:2cb:201:3a5f:3a4f:fa44:6b63]) by smtp.gmail.com with ESMTPSA id z25-v6sm1193111pgu.53.2018.06.29.07.02.31 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 29 Jun 2018 07:02:32 -0700 (PDT) From: Shakeel Butt To: Paolo Bonzini , Andrew Morton Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-mm@kvack.org, Shakeel Butt , Michal Hocko , Johannes Weiner , Vladimir Davydov , Greg Thelen , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , Peter Feiner , stable@vger.kernel.org Subject: [PATCH v2] kvm, mm: account shadow page tables to kmemcg Date: Fri, 29 Jun 2018 07:02:24 -0700 Message-Id: <20180629140224.205849-1-shakeelb@google.com> X-Mailer: git-send-email 2.18.0.rc2.346.g013aa6912e-goog MIME-Version: 1.0 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 Cc: Michal Hocko Cc: Johannes Weiner Cc: Vladimir Davydov Cc: Paolo Bonzini Cc: Greg Thelen Cc: Radim Krčmář Cc: Peter Feiner Cc: Andrew Morton Cc: stable@vger.kernel.org --- Changelog since v1: - replaced (GFP_KERNEL|__GFP_ACCOUNT) with GFP_KERNEL_ACCOUNT 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..6b8f11521c41 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_ACCOUNT); if (!page) return -ENOMEM; cache->objects[cache->nobjs++] = page;