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=-3.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 DCE6EC4724C for ; Thu, 30 Apr 2020 20:45:02 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id ACB5620774 for ; Thu, 30 Apr 2020 20:45:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=xen.org header.i=@xen.org header.b="RYV6TpNP" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ACB5620774 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=xen.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jUG2y-0002oT-Ur; Thu, 30 Apr 2020 20:44:40 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jUG2x-0002oO-34 for xen-devel@lists.xenproject.org; Thu, 30 Apr 2020 20:44:39 +0000 X-Inumbo-ID: 67ddbcb8-8b23-11ea-9aaf-12813bfff9fa Received: from mail.xenproject.org (unknown [104.130.215.37]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 67ddbcb8-8b23-11ea-9aaf-12813bfff9fa; Thu, 30 Apr 2020 20:44:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xen.org; s=20200302mail; h=Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: MIME-Version:Content-Type:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=65lvQ4PbPRxi9d54dSLD9/wIHTVMii+HQcXJixzddik=; b=RYV6TpNPcZAXOe47Tm8GnwMS4n Ak++zpff4XuAzR+W5jzfjNi6XjfPVrIzK47yGEw9HrWmZ3errmV/NfoTp6TfDpiDJTfvFIvBazLOM gL/dBGhV6zvnwwb1LzIkh//lr7xOZLFBSjOwjTQ+mUlPpiwrPDajxnR+W1tw8kKqTaqg=; Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1jUG2u-0004Ko-Nk; Thu, 30 Apr 2020 20:44:36 +0000 Received: from 54-240-197-234.amazon.com ([54.240.197.234] helo=u1bbd043a57dd5a.ant.amazon.com) by xenbits.xenproject.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.89) (envelope-from ) id 1jUG2u-0005wj-Cw; Thu, 30 Apr 2020 20:44:36 +0000 From: Hongyan Xia To: xen-devel@lists.xenproject.org Subject: [PATCH 00/16] Remove the direct map Date: Thu, 30 Apr 2020 21:44:09 +0100 Message-Id: X-Mailer: git-send-email 2.17.1 X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Stefano Stabellini , julien@xen.org, Wei Liu , Andrew Cooper , Ian Jackson , George Dunlap , Jan Beulich , Volodymyr Babchuk , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" From: Hongyan Xia This series depends on Xen page table domheap conversion: https://lists.xenproject.org/archives/html/xen-devel/2020-04/msg01374.html. After breaking the reliance on the direct map to manipulate Xen page tables, we can now finally remove the direct map altogether. This series: - fixes many places that use the direct map incorrectly or assume the presence of an always-mapped direct map in a wrong way. - includes the early vmap patches for global mappings. - initialises the mapcache for all domains, disables the fast path that uses the direct map for mappings. - maps and unmaps xenheap on-demand. - adds a boot command line switch to enable or disable the direct map. This previous version was in RFC state and can be found here: https://lists.xenproject.org/archives/html/xen-devel/2019-09/msg02647.html, which has since been broken into small series. Hongyan Xia (12): acpi: vmap pages in acpi_os_alloc_memory x86/numa: vmap the pages for memnodemap x86/srat: vmap the pages for acpi_slit x86: map/unmap pages in restore_all_guests. x86/pv: rewrite how building PV dom0 handles domheap mappings x86/mapcache: initialise the mapcache for the idle domain x86: add a boot option to enable and disable the direct map x86/domain_page: remove the fast paths when mfn is not in the directmap xen/page_alloc: add a path for xenheap when there is no direct map x86/setup: leave early boot slightly earlier x86/setup: vmap heap nodes when they are outside the direct map x86/setup: do not create valid mappings when directmap=no Wei Liu (4): x86/setup: move vm_init() before acpi calls x86/pv: domheap pages should be mapped while relocating initrd x86: add Persistent Map (PMAP) infrastructure x86: lift mapcache variable to the arch level docs/misc/xen-command-line.pandoc | 12 +++ xen/arch/arm/setup.c | 4 +- xen/arch/x86/Makefile | 1 + xen/arch/x86/domain.c | 4 +- xen/arch/x86/domain_page.c | 53 ++++++++----- xen/arch/x86/mm.c | 8 +- xen/arch/x86/numa.c | 8 +- xen/arch/x86/pmap.c | 87 +++++++++++++++++++++ xen/arch/x86/pv/dom0_build.c | 75 ++++++++++++++---- xen/arch/x86/setup.c | 125 +++++++++++++++++++++++++----- xen/arch/x86/srat.c | 3 +- xen/arch/x86/x86_64/entry.S | 27 ++++++- xen/common/page_alloc.c | 85 +++++++++++++++++--- xen/common/vmap.c | 37 +++++++-- xen/drivers/acpi/osl.c | 9 ++- xen/include/asm-arm/mm.h | 5 ++ xen/include/asm-x86/domain.h | 12 +-- xen/include/asm-x86/fixmap.h | 3 + xen/include/asm-x86/mm.h | 17 +++- xen/include/asm-x86/pmap.h | 10 +++ xen/include/xen/vmap.h | 5 ++ 21 files changed, 495 insertions(+), 95 deletions(-) create mode 100644 xen/arch/x86/pmap.c create mode 100644 xen/include/asm-x86/pmap.h -- 2.24.1.AMZN