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=-10.7 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 612B4C43441 for ; Fri, 9 Nov 2018 20:39:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2300220855 for ; Fri, 9 Nov 2018 20:39:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="Zvp30cs6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2300220855 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 S1728336AbeKJGVn (ORCPT ); Sat, 10 Nov 2018 01:21:43 -0500 Received: from mail-qk1-f201.google.com ([209.85.222.201]:43176 "EHLO mail-qk1-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726110AbeKJGVm (ORCPT ); Sat, 10 Nov 2018 01:21:42 -0500 Received: by mail-qk1-f201.google.com with SMTP id z126so5792279qka.10 for ; Fri, 09 Nov 2018 12:39:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=NWa7fS++m02mUdorr1OZ28RtYO0ZyNnH1VedLowKjpk=; b=Zvp30cs6sWWTO/IAq6ubugC4eVLbuxnn8YjARzPhQ0LkGsKc3l49btvffII7EnE7ja tdgz7mILWWkXYsM/UCJyaKdS5+wr7XkjS0K8bTRaK0Bpq9kWZRJOTCKvD4CqX1fCOtjo Slc2CCDFNbMRXM+zjIrb9KJg1jzRoQao04Whd2xpADOXrloFjUz19k14iXIu3uxIjnZY hZd7Lh2p17ld03AGL7jPhbTBzjmQMHW8JbMzGlkpvjLmfzOXmlb5+kpZ8RhDAJxKn6ct 2sWkUXF2FNoNrBAEnHi6EEGt2QCNXKCtMdyGfR7TOXjt/eFt7yW3OJl+lB3em8JNsZGv LBSg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=NWa7fS++m02mUdorr1OZ28RtYO0ZyNnH1VedLowKjpk=; b=JFyeJ8JY0J7U33iYqzCgOKyGd82rTrjan0DFc7o3sFbMZK3zs2ohmBUFJSp/WtTGhW TYR083R/LEOFNwmjVautX/dCaed7XkwDFIRKAUVhp8m2iE79fTj07hRrT10OGqxTZXz1 uhDB5g87kk1r+V2VAWAgVvI3d+yb6hwqgmyPWFnqxTxGhqf789nMOn7DEYbyUuan/ZyD jtfX29abn+V0hoP3v2kxKrSIEVMyBg+wuFm+SZmV/d20r+nNZoEj6bmN0aICuav0SBNq lK+9ixLoLNjBKETlXM7HSOLqheFMuIWkniJemw2SGdHjX7+Z/lNxHKGM//v2oulfGxgW fafQ== X-Gm-Message-State: AGRZ1gKS10EAgpX85MP2JBBuMpQwUjGq34JI+8Vc7XQDTxQauqXhRWhF LDot5PGxNdqDHEieMO2U20wGq3jh X-Google-Smtp-Source: AJdET5doxj4D8s2TzmznxTnlzfek7zkmnd0hZx3drKbOZVe+citbmZouKJxbMQ3GSPvxbC7+kflRNJi3 X-Received: by 2002:ac8:1b55:: with SMTP id p21mr2169782qtk.16.1541795969398; Fri, 09 Nov 2018 12:39:29 -0800 (PST) Date: Fri, 9 Nov 2018 15:39:19 -0500 Message-Id: <20181109203921.178363-1-brho@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.19.1.930.g4563a0d9d0-goog Subject: [PATCH 0/2] 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 Archived-At: List-Archive: List-Post: 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/ Barret Rhoden (2): mm: make dev_pagemap_mapping_shift() externally visible kvm: Use huge pages for DAX-backed files arch/x86/kvm/mmu.c | 34 ++++++++++++++++++++++++++++++++-- include/linux/mm.h | 3 +++ mm/memory-failure.c | 38 +++----------------------------------- mm/util.c | 34 ++++++++++++++++++++++++++++++++++ 4 files changed, 72 insertions(+), 37 deletions(-) -- 2.19.1.930.g4563a0d9d0-goog