From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, T_DKIMWL_WL_MED,URIBL_BLOCKED,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4E75DC43141 for ; Fri, 29 Jun 2018 14:02:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0441827E08 for ; Fri, 29 Jun 2018 14:02:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="BtOwTi8S" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0441827E08 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936680AbeF2OCh (ORCPT ); Fri, 29 Jun 2018 10:02:37 -0400 Received: from mail-pg0-f66.google.com ([74.125.83.66]:40126 "EHLO mail-pg0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S936662AbeF2OCf (ORCPT ); Fri, 29 Jun 2018 10:02:35 -0400 Received: by mail-pg0-f66.google.com with SMTP id w8-v6so4051082pgp.7 for ; Fri, 29 Jun 2018 07:02:35 -0700 (PDT) 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-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=Uvosgf1N9qtGxuTqtWVf314atLsMKNgXkNX+PFJWIEg=; b=jaRx129bVXnrLCQvJcTfkaIHzu81Zj87CqayDbqFX/pBZG15QrDyfMjxWHtq2OWuE3 DJlYh0UXQNgSav6TkN/T07oZVZ3ND4u6l+ZLti1Db8iAHIUoxoTgNQFJcvpp2QiXM2Fe S6NuL69RqQ62kqMSzuXZA4E1uoRwwAgIzHJq6/F4vcEZrmOa/ek52CHgiZ/8gMo3Eu4k FDe4BN0UcDZGb8Z3ULntuiXa2VqyNXC4TKHNaVpraaZOptAXrBz1+I4DloYEu+1LBqCg 8Cexqjk33aEMoy47kTaqLGno3SUSQb3jYE2R+y5w4SQhCRXHV6a0ThQuXEOONv7+M8GN OJpA== X-Gm-Message-State: APt69E0wlANm1U7gtmOkQUNN2BxTKIYPwKSzBzNTO76t17m8ag8joRyq /7Rd3WnWW6Qejm4oDA35uDVfOA== 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 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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; -- 2.18.0.rc2.346.g013aa6912e-goog