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 49A6AC77B7E for ; Fri, 2 Jun 2023 01:25:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233493AbjFBBZI (ORCPT ); Thu, 1 Jun 2023 21:25:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50034 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231468AbjFBBZF (ORCPT ); Thu, 1 Jun 2023 21:25:05 -0400 Received: from mail-pl1-x649.google.com (mail-pl1-x649.google.com [IPv6:2607:f8b0:4864:20::649]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3152CF2 for ; Thu, 1 Jun 2023 18:25:04 -0700 (PDT) Received: by mail-pl1-x649.google.com with SMTP id d9443c01a7336-1b04600cac6so6597995ad.1 for ; Thu, 01 Jun 2023 18:25:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1685669103; x=1688261103; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=iK8lSs3YaneXBCRAzbjwsWp2npRQly6WzP0NZm/doWU=; b=BTotzJyO74t0U/JIX/3DDJDlMmcCiG9tjBWd4Z9EfBWXPRZa+wn7lmQEOHuBJT7+/F 6qL97vbIMvSrXN9lSfuQctNufEcxa5CUo531kAHUDQ54g6zkby0TCW8jKf+zZWcjNIzl NuuCfPBoMx0RSo2B8LRn6iz8Tds3k5nxJCpAYYEj+3e+vEWjFwUP3CED0DnfCxRdZUBB N7377VxP2sqe2ePMi/MOSCbHqL16XXt/EPAA516+UigvQgrEA49k25IBiRkgL+P5LM0d IxsdHlICEx/nz2Ni78ePd0XLSzEqhLozVn2ydM49Nv9An06QTpNtiaSjNTM9WG5AtnTD 14Kw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685669103; x=1688261103; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=iK8lSs3YaneXBCRAzbjwsWp2npRQly6WzP0NZm/doWU=; b=VxPNHQmPJTfvHc/qKFCgmWe0Jp4L4V/f/rRaSYwx6drVXSnX3hIJU1xBKY5wFqqrZi aB3D6Epp12qJfdyYsGM9dDQgEKRW0fd/+a2tlqeVn5Qer6wF5LspWjwh1oW9N366TKpY 7Q2csfnVb8UH8KMjYxehwuarzakm3SJfm/jEkuNv+JWcAFx1aKMHlzXVbfPwcMdiR8ry TLsw/sc4/RdpFhH0gtgpOo90EHuJ9jsL83EaFmKHSOtRUBQaNuJ2qXUZVEH5RBYQjW2M nLETJ4t6sMory55sqHQ7krxzUW1ahAkYn1UtLE0jrnu06jKZCDoUjSqBb04ojld8pLzP Lurg== X-Gm-Message-State: AC+VfDzPJNAO8HvaRT+rY6bjC9PhP/pqRg2N5DJYy9WTMXLOWXyTuRls dgSH8WCujHl8W9jREcMk/hTxmqHx3h8= X-Google-Smtp-Source: ACHHUZ7XEpebUrUgs1x/mu5T0Qsko+BuvdEyHPqBlAtmZGpYafeD+7h4iwSxfk616ZwZgmqjp7cmInuDCtU= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a17:903:22c3:b0:1b0:6038:e1c7 with SMTP id y3-20020a17090322c300b001b06038e1c7mr255034plg.7.1685669103727; Thu, 01 Jun 2023 18:25:03 -0700 (PDT) Date: Thu, 1 Jun 2023 18:23:32 -0700 In-Reply-To: <20230131181820.179033-1-bgardon@google.com> Mime-Version: 1.0 References: <20230131181820.179033-1-bgardon@google.com> X-Mailer: git-send-email 2.41.0.rc2.161.g9c6817b8e7-goog Message-ID: <168565341087.666819.6731422637224460050.b4-ty@google.com> Subject: Re: [PATCH V5 0/2] selftests: KVM: Add a test for eager page splitting From: Sean Christopherson To: Sean Christopherson , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Ben Gardon Cc: Paolo Bonzini , Peter Xu , David Matlack , Vipin Sharma , Ricardo Koller Content-Type: text/plain; charset="utf-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 31 Jan 2023 18:18:18 +0000, Ben Gardon wrote: > David Matlack recently added a feature known as eager page splitting > to x86 KVM. This feature improves vCPU performance during dirty > logging because the splitting operation is moved out of the page > fault path, avoiding EPT/NPT violations or allowing the vCPU threads > to resolve the violation in the fast path. > > While this feature is a great performance improvement, it does not > have adequate testing in KVM selftests. Add a test to provide coverage > of eager page splitting. > > [...] Applied to kvm-x86 selftests, thanks! [1/2] selftests: KVM: Move dirty logging functions to memstress.(c|h) https://github.com/kvm-x86/linux/commit/de10b798055d [2/2] selftests: KVM: Add dirty logging page splitting test https://github.com/kvm-x86/linux/commit/dfa78a20cc87 -- https://github.com/kvm-x86/linux/tree/next https://github.com/kvm-x86/linux/tree/fixes