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=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FSL_HELO_FAKE, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_IN_DEF_DKIM_WL autolearn=no 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 4D095C4338F for ; Wed, 28 Jul 2021 16:22:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2FBAF6069E for ; Wed, 28 Jul 2021 16:22:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229968AbhG1QWW (ORCPT ); Wed, 28 Jul 2021 12:22:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37228 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229914AbhG1QWW (ORCPT ); Wed, 28 Jul 2021 12:22:22 -0400 Received: from mail-pl1-x631.google.com (mail-pl1-x631.google.com [IPv6:2607:f8b0:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B0944C061757 for ; Wed, 28 Jul 2021 09:22:20 -0700 (PDT) Received: by mail-pl1-x631.google.com with SMTP id d1so3333229pll.1 for ; Wed, 28 Jul 2021 09:22:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=SX77jUngzbzpeyvU9f3wQNjCF2DwI9f6Oq2Toy5MXcw=; b=KvCtjpjMprp7cO4bWkJe1GwIb9HVJ2dQsU1C+zOdylAGzcWlN3EhgUY05GiYpg8GS3 BmefgJlebXvJ5bk14+kQbwNBTq8N9gZr03qwY1IcgaEtLX8kdQZaLlzjeU/pmLw8Ew+I DTxjfJYAbJY9HIGWtbcauxW7y9VMia9m2VvJ8LRdJc3+17hBm+tvRxtzrgXc8QnvYdRj TiPyoB7KDSBPdgMeiXEeH96EXCyjCBoN3UuLVr08WF6yDYILoZkEVItsv/MpgdoBfAZw WglAeZeWJPaeFTwduFE9cRL1lR5XyC93A+NiNQWZ6KGm7vf8PaKSawHvIt45W380Aee0 dqWA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=SX77jUngzbzpeyvU9f3wQNjCF2DwI9f6Oq2Toy5MXcw=; b=ac4epqtMVHiaZFcmHXcrC1DgU/Zd8O/rHl512bE3qX+CrejA+Ic8rbsL6fOSTUMcoG 4naJny2yGYRgsfcdm923qddAQRahdQOifeyCrxI7/oouzDbU/FRJU7B69tKJa2yjaFHU boSp0c3cXYaY7fA4OJGpouwYRUZaqyZJGtYFmkKOEMFid7drYQCrTpM/kaV5vnCEPrlw CoYptiQhbEePVuJju0sOo0GLfNDo/7Melz6O8SCwiaF7i2JnvjCCNbjn9ZXUbw6Cz/cO 74E9ditWdbA713+V4TJ6pzvl1aH+cUidqUmIQeyS0fKDOSD5MQGOzkVUZgj2bOjEfm+T gZHg== X-Gm-Message-State: AOAM533K5KKPhiaAiUHK75IbcnXmYfBYQXZI6116Jobt2HlpDARMlG/S i7PLmAunOikQhKuLkLiammi3bbXLI4NY2TeT X-Google-Smtp-Source: ABdhPJzA3BBIVd+9l/f7oVcmDvOuujhZLkKM56p3RvSH0xXZBMYNJVzR1k+d0z7H+GLq/tOjM+IbYw== X-Received: by 2002:a17:90b:248e:: with SMTP id nt14mr606301pjb.144.1627489340043; Wed, 28 Jul 2021 09:22:20 -0700 (PDT) Received: from google.com (254.80.82.34.bc.googleusercontent.com. [34.82.80.254]) by smtp.gmail.com with ESMTPSA id a4sm517203pfk.5.2021.07.28.09.22.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Jul 2021 09:22:19 -0700 (PDT) Date: Wed, 28 Jul 2021 16:22:15 +0000 From: David Matlack To: Paolo Bonzini Cc: kvm@vger.kernel.org, Ben Gardon , Joerg Roedel , Jim Mattson , Wanpeng Li , Vitaly Kuznetsov , Sean Christopherson , Junaid Shahid , Andrew Jones , Matthew Wilcox , Yu Zhao , David Hildenbrand , Andrew Morton Subject: Re: [PATCH v3 0/6] KVM: x86/mmu: Fast page fault support for the TDP MMU Message-ID: References: <20210713220957.3493520-1-dmatlack@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 26, 2021 at 03:50:58PM +0200, Paolo Bonzini wrote: > On 14/07/21 00:09, David Matlack wrote: > > This patch series adds support for the TDP MMU in the fast_page_fault > > path, which enables certain write-protection and access tracking faults > > to be handled without taking the KVM MMU lock. This series brings the > > performance of these faults up to par with the legacy MMU. > > Queued, thanks. Thanks Paolo. I noticed on PATCH 3 you changed the if-return to if-else. What was your rational? (I want to make sure I incorporate it in future patches.) > > Paolo >