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=-12.1 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_PASS,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 D095DC43441 for ; Wed, 14 Nov 2018 22:48:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 950A42145D for ; Wed, 14 Nov 2018 22:48:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="ef8CFGTa" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 950A42145D 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 S1728358AbeKOIx2 (ORCPT ); Thu, 15 Nov 2018 03:53:28 -0500 Received: from mail-qk1-f201.google.com ([209.85.222.201]:50463 "EHLO mail-qk1-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726958AbeKOIx2 (ORCPT ); Thu, 15 Nov 2018 03:53:28 -0500 Received: by mail-qk1-f201.google.com with SMTP id x125so23569886qka.17 for ; Wed, 14 Nov 2018 14:48:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=xkTfZ5o1GNAQFrsBpd9b1qpDiRwW7hTYlCyvxR2DUV4=; b=ef8CFGTaYqRT3qssdlIdyUqI6URrez8hYU2ly3uwI3tjP5B6BLKMvRGvCRurmwHxgV Dtg2mq6qMjU7LiQmjhC6E4W1HaDfq1V+9cLaiIVCWAd6X/3lOtgzHnw0OpeKY3d2nbPo 4i1MQtPNWqYmVPGasoP5r0rr754/NZIAG7L1niE6xC4TN2kBWD/c3dsNn7G65D+2LSVj GUQ9uPURBiITXtQHjOhue7vCq+xs4e69c3b3daG/+TBFUN1OgW6Vmt2mQigFXhfW9EeD 8hOJPdyNt8Pnz5x2EaE1V1VvQm1TWZ5fGbg/at6VmyNmNOy2ePI+/C52wsLVki/hkh5s H8QA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=xkTfZ5o1GNAQFrsBpd9b1qpDiRwW7hTYlCyvxR2DUV4=; b=GaH/R6miBF0qc+gzpcueF9VjnoyK2DEvdpu/lA6ZFqZK0iemQmvJ1Jr1U2hIRTbPgd +qpQdtqhFhr2Y3ITzxVVNLbT03qVNYHM0iw790vXiB+tMxL+hHX4lRFbPR0ZYWRCKIrU x5kNgtx6IpYdlBw1+W0/6xrPoxDNt0aZ5E+B5bL1DFFGD3+Npp6YGGy4jLa2CvSrmWwk up2aVm+7CX6g5glB1mJfUCzaEF6+lFVqdGFoPFjmq3nlHYnXTKIk8sSJfr4O2L80EZjw GZy9WAfvTEF0zEryEbJ81T+GkSpX/XKT3QKokxJdpw88AnEGquOiCtIU9+fmwPgNoUzf JPoQ== X-Gm-Message-State: AGRZ1gJ192CiEyJIzN6CH6UayitgaZsKuYpuRvS9iv/8bTq3b/6M0dlL sN58vYPNe8Uqfp41/Y89iIWfOG00 X-Google-Smtp-Source: AJdET5et7OS4cK0VcjAi1DVwiLAQGhgKIb+1zjKidUpbuzrEHxdvqzDUDUCGJ9oLndVxVc54dVUKfgg+ X-Received: by 2002:a0c:b7a8:: with SMTP id l40mr2581731qve.4.1542232379110; Wed, 14 Nov 2018 13:52:59 -0800 (PST) Date: Wed, 14 Nov 2018 16:51:52 -0500 In-Reply-To: <20181109203921.178363-1-brho@google.com> Message-Id: <20181114215155.259978-1-brho@google.com> Mime-Version: 1.0 References: <20181109203921.178363-1-brho@google.com> X-Mailer: git-send-email 2.19.1.1215.g8438c0b245-goog Subject: [PATCH v2 0/3] kvm: Use huge pages for DAX-backed files From: Barret Rhoden To: Dan Williams , Dave Jiang , Ross Zwisler , Vishal Verma , Paolo Bonzini , "=?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?=" , Thomas Gleixner , Ingo Molnar , Borislav Petkov Cc: linux-nvdimm@lists.01.org, linux-kernel@vger.kernel.org, "H. Peter Anvin" , x86@kernel.org, kvm@vger.kernel.org, yu.c.zhang@intel.com, yi.z.zhang@intel.com Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch series depends on dax pages not being PageReserved. Once that is in place, these changes will let KVM use huge pages with dax-backed files. Without the PageReserved change, KVM and DAX still work with these patches, simply without huge pages - which is the current situation. RFC/discussion thread: https://lore.kernel.org/lkml/20181029210716.212159-1-brho@google.com/ v1 -> v2: https://lore.kernel.org/lkml/20181109203921.178363-1-brho@google.com/ - Updated Acks/Reviewed-by - Minor touchups - Added patch to remove redundant PageReserved() check - Rebased onto linux-next Barret Rhoden (3): mm: make dev_pagemap_mapping_shift() externally visible kvm: Use huge pages for DAX-backed files kvm: remove redundant PageReserved() check arch/x86/kvm/mmu.c | 33 +++++++++++++++++++++++++++++++-- include/linux/mm.h | 3 +++ mm/memory-failure.c | 38 +++----------------------------------- mm/util.c | 34 ++++++++++++++++++++++++++++++++++ virt/kvm/kvm_main.c | 8 ++------ 5 files changed, 73 insertions(+), 43 deletions(-) -- 2.19.1.1215.g8438c0b245-goog