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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 28FC5C43334 for ; Mon, 25 Jul 2022 23:27:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237073AbiGYX10 (ORCPT ); Mon, 25 Jul 2022 19:27:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233774AbiGYX1Z (ORCPT ); Mon, 25 Jul 2022 19:27:25 -0400 Received: from mail-pg1-x52a.google.com (mail-pg1-x52a.google.com [IPv6:2607:f8b0:4864:20::52a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6951026561 for ; Mon, 25 Jul 2022 16:27:23 -0700 (PDT) Received: by mail-pg1-x52a.google.com with SMTP id 12so11460367pga.1 for ; Mon, 25 Jul 2022 16:27:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=LBRZcpT2Oj7kZwiIgXTNapPpF8SACvWYM09RAzea9XQ=; b=h+5ZbQek7/GzuRNvS4l7gk1bhglJKDpog5wTMzwBryAuiqfghqCO5v6L1zSWDtLQXP mNpSjOm/8xh/qiD+OrTLt9WI244jmkaeoc5jMl5PShmxLxgv9+XiCjQSxwhg74i3QQyO KuU5V4lF1zcRfEUKMsu+RKFMyl8W77IFbaaZ/by6j3PhSSa7fLdZb2laJLEhFCBvYoZC rYhoAR3XPqVU1/4rlSPAm7nLpSXhmHHrIZbDIBNUw2i8RsgTxMX6G/9AtyBosZOs6xVJ JVqMkG4orZ1meAcN8hOnAoTR7oszSMN3qYErztmQnlB7OyAvUg5tEO65VrbRDo4mY47U wE7g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=LBRZcpT2Oj7kZwiIgXTNapPpF8SACvWYM09RAzea9XQ=; b=ywXEWpt9ZSXpkxbEnfOopwFZOcrsrF5/7hGJ5NYzWhaKqvxBrdaL/qXNcYsjtHY9H8 CkSIYY/PzUIbi8DUpEt1mcQEK7mwWOhMBg8Rg8XyCDNoEkgA8MT//+zucrUVANbOgGSw vuLTY7MhOby8ZQVB96Q8eg4JU4PeIuwzaz48pGRN4v5nzq+UrfMqGKELQi3D7WP+URXO VBF1j2RQv1+SyU9yWnESotLqXEV4w9bFI8rZ3QAIsrcSqXwWVSDzyUgvPZg77KlfALAb uwaJmzXvYvjieQDtitfgjKTOm1+t6G+d8dy5YTuNDL7vajgM+rCZCgV80IKUQNFeIlOm AFzg== X-Gm-Message-State: AJIora8qwxeoowodPqLOjoEJw0IzFATOGFDcc6tCQlAxot4Jw5U+9EAs T6XSFKPhatvdJP5+haSLH8AbSg== X-Google-Smtp-Source: AGRyM1utPTWf9Vi46bEzSrtsWzdtYwfeWkY7II53X8Dvxv0h3Ky7x/hNmaLI7CBFX649RC1wA9K6Pg== X-Received: by 2002:a05:6a00:bcb:b0:52b:34e3:c043 with SMTP id x11-20020a056a000bcb00b0052b34e3c043mr14899628pfu.64.1658791642874; Mon, 25 Jul 2022 16:27:22 -0700 (PDT) Received: from google.com (7.104.168.34.bc.googleusercontent.com. [34.168.104.7]) by smtp.gmail.com with ESMTPSA id b14-20020a170903228e00b0016d3ee4533csm7868349plh.18.2022.07.25.16.27.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Jul 2022 16:27:22 -0700 (PDT) Date: Mon, 25 Jul 2022 23:27:19 +0000 From: Sean Christopherson To: David Matlack Cc: Paolo Bonzini , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Yosry Ahmed , Mingwei Zhang , Ben Gardon Subject: Re: [PATCH v2 4/6] KVM: x86/mmu: Track the number of TDP MMU pages, but not the actual pages Message-ID: References: <20220723012325.1715714-1-seanjc@google.com> <20220723012325.1715714-5-seanjc@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Mon, Jul 25, 2022, David Matlack wrote: > > diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h > > index 246b69262b93..5c269b2556d6 100644 > > --- a/arch/x86/include/asm/kvm_host.h > > +++ b/arch/x86/include/asm/kvm_host.h > > @@ -1271,6 +1271,9 @@ struct kvm_arch { > > */ > > bool tdp_mmu_enabled; > > > > + /* The number of TDP MMU pages across all roots. */ > > + atomic64_t tdp_mmu_pages; > > This is the number of non-root TDP MMU pages, right? Yes.