From patchwork Mon May 15 08:19:31 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hou Wenlong X-Patchwork-Id: 13240942 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id ADEB0C77B7D for ; Mon, 15 May 2023 08:20:38 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.534601.831744 (Exim 4.92) (envelope-from ) id 1pyTRK-0000Zo-7t; Mon, 15 May 2023 08:20:18 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 534601.831744; Mon, 15 May 2023 08:20:18 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pyTRK-0000Zh-5J; Mon, 15 May 2023 08:20:18 +0000 Received: by outflank-mailman (input) for mailman id 534601; Mon, 15 May 2023 08:20:16 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pyTRI-0000Zb-QS for xen-devel@lists.xenproject.org; Mon, 15 May 2023 08:20:16 +0000 Received: from out0-199.mail.aliyun.com (out0-199.mail.aliyun.com [140.205.0.199]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id 4f8ed683-f2f9-11ed-b229-6b7b168915f2; Mon, 15 May 2023 10:20:13 +0200 (CEST) Received: from localhost(mailfrom:houwenlong.hwl@antgroup.com fp:SMTPD_---.T2DpdLD_1684138803) by smtp.aliyun-inc.com; Mon, 15 May 2023 16:20:04 +0800 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 4f8ed683-f2f9-11ed-b229-6b7b168915f2 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R111e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018047212;MF=houwenlong.hwl@antgroup.com;NM=1;PH=DS;RN=28;SR=0;TI=SMTPD_---.T2DpdLD_1684138803; From: "Hou Wenlong" To: linux-kernel@vger.kernel.org Cc: "Lai Jiangshan" , "Hou Wenlong" , "Alexey Makhalov" , "Andrew Morton" , "Andy Lutomirski" , "Anshuman Khandual" , "Borislav Petkov" , "Boris Ostrovsky" , "Brian Gerst" , "Dave Hansen" , "David Woodhouse" , "H. Peter Anvin" , "Ingo Molnar" , "Josh Poimboeuf" , "Juergen Gross" , "Kirill A. Shutemov" , " =?utf-8?q?Mike_Ra?= =?utf-8?q?poport_=28IBM=29?= " , "Pasha Tatashin" , "Peter Zijlstra" , " =?utf-8?q?Srivatsa_S=2E_Bhat_=28?= =?utf-8?q?VMware=29?= " , "Suren Baghdasaryan" , "Thomas Gleixner" , "Usama Arif" , , "VMware PV-Drivers Reviewers" , , Subject: [PATCH RFC 0/4] x86/fixmap: Unify FIXADDR_TOP Date: Mon, 15 May 2023 16:19:31 +0800 Message-Id: X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 This patchset unifies FIXADDR_TOP as a variable for x86, allowing the fixmap area to be movable and relocated with the kernel image in the x86/PIE patchset [0]. This enables the kernel image to be relocated in the top 512G of the address space. [0] https://lore.kernel.org/lkml/cover.1682673542.git.houwenlong.hwl@antgroup.com Hou Wenlong (4): x86/vsyscall: Don't use set_fixmap() to map vsyscall page x86/xen: Pin up to VSYSCALL_ADDR when vsyscall page is out of fixmap area x86/fixmap: Move vsyscall page out of fixmap area x86/fixmap: Unify FIXADDR_TOP arch/x86/entry/vsyscall/vsyscall_64.c | 7 +----- arch/x86/include/asm/fixmap.h | 28 ++++------------------- arch/x86/include/asm/paravirt.h | 7 ++++++ arch/x86/include/asm/paravirt_types.h | 4 ++++ arch/x86/include/asm/vsyscall.h | 13 +++++++++++ arch/x86/kernel/head64.c | 1 - arch/x86/kernel/head_64.S | 6 ++--- arch/x86/kernel/paravirt.c | 4 ++++ arch/x86/mm/dump_pagetables.c | 3 ++- arch/x86/mm/fault.c | 1 - arch/x86/mm/init_64.c | 2 +- arch/x86/mm/ioremap.c | 5 ++--- arch/x86/mm/pgtable.c | 13 +++++++++++ arch/x86/mm/pgtable_32.c | 3 --- arch/x86/xen/mmu_pv.c | 32 +++++++++++++++++++-------- 15 files changed, 77 insertions(+), 52 deletions(-) base-commit: f585d5177e1aad174fd6da0e3936b682ed58ced0 --- 2.31.1