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[2620:137:e000::1:20]) by mx.google.com with ESMTP id b5-20020a63eb45000000b0052cc0b8d59dsi10340966pgk.798.2023.05.12.17.11.05; Fri, 12 May 2023 17:11:19 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20221208 header.b="MH/xgRcl"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241223AbjELX6r (ORCPT + 99 others); Fri, 12 May 2023 19:58:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60808 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240919AbjELX6l (ORCPT ); Fri, 12 May 2023 19:58:41 -0400 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D7B222D68 for ; Fri, 12 May 2023 16:58:13 -0700 (PDT) Received: by mail-yb1-xb4a.google.com with SMTP id 3f1490d57ef6-b9a25f6aa0eso19326502276.1 for ; Fri, 12 May 2023 16:58:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1683935892; x=1686527892; h=cc:to:from:subject:mime-version:message-id:date:from:to:cc:subject :date:message-id:reply-to; bh=2B9ylj6BFfnRpivqhld1/fhZhP2W8ss3stfOx6ALHRA=; b=MH/xgRcl+oUPdxpSL89+G1Evz0eAj37oZvyPdlEMzSK1W1bXq+MdFgI5o0PFEYAlrO 84MDZRwz1cr6sqxQFVeYXxgCRAiORqaDDNQL7zorctuToCxpbKuXepJ7AKbwyEawuaKO XQl82PD3sX+QBkC3xy7I+TlYA/iQK9Bitn3+jhNRz+kcr4U8pUaiTj3lELHkiqAXaJx9 WfElw7DOVD034UIRYtbMCksCxNLOtIskaVofeeGZGVhH2M4NcSVX2TPPAklY8Sf9/7Cd GL45qL8Ne0EeZ2bnWg1kgrhJ43j5rMQBBv5Twk/6UdsKtfLGHSNBixyjLoymaxL9gi+F raeg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683935892; x=1686527892; h=cc:to:from:subject:mime-version:message-id:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=2B9ylj6BFfnRpivqhld1/fhZhP2W8ss3stfOx6ALHRA=; b=Sgv2Nd8kukbpbz3RwOHvViTy3i/A2GLsXY15CKQkU2WpSI9mEmz/tRllQ3iC9ckxks j8DfFwYmXcoZGhAH15s4yhGM1zKl1UNHdluN9K3bF6fdIsE8lHFW4AHCQe/XiWiYcVUg 4K2JvT155/LNFIDy7EDnt3EDk8uqxHz8CQMfZCJqg0eg9pmGSDTByIYJVUPN+3m/H21y Ilz5HXlDC2ut3259mqWEQPVmGWcVBv8GUsUFqSvBa1NCgT32a86s5wTMNp3GUtYq+VIK e4jKpYEXtRQUl5PUemB3HNDoeNYMaUJLot739dUtwX+Mqqp5fPk//09EG8/pD38B5n7C 4hjQ== X-Gm-Message-State: AC+VfDxURxfOHGpTsWMX5sptKC81Lz89DP541Vsn7QbwiHw89Fhx9U8i U7zHQJ+2oA4Uk+jGPi96yu3bDIQ= X-Received: from pcc-desktop.svl.corp.google.com ([2620:15c:2d3:205:ff6:108b:739d:6a1c]) (user=pcc job=sendgmr) by 2002:a05:6902:154b:b0:ba6:db51:a7e4 with SMTP id r11-20020a056902154b00b00ba6db51a7e4mr2646213ybu.11.1683935892703; Fri, 12 May 2023 16:58:12 -0700 (PDT) Date: Fri, 12 May 2023 16:57:49 -0700 Message-Id: <20230512235755.1589034-1-pcc@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.40.1.606.ga4b1b128d6-goog Subject: [PATCH 0/3] mm: Fix bug affecting swapping in MTE tagged pages From: Peter Collingbourne To: Catalin Marinas Cc: Peter Collingbourne , " =?utf-8?b?UXVuLXdlaSBMaW4gKA==?= =?utf-8?b?5p6X576k5bS0KQ==?= " , linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, "surenb@google.com" , "david@redhat.com" , " =?utf-8?b?Q2hpbndlbiBDaGFuZyAo5by1?= =?utf-8?b?6Yym5paHKQ==?= " , "kasan-dev@googlegroups.com" , " =?utf-8?b?S3Vh?= =?utf-8?b?bi1ZaW5nIExlZSAo5p2O5Yag56mOKQ==?= " , " =?utf-8?b?Q2FzcGVyIExpICjmnY7kuK3mpq4p?= " , "gregkh@linuxfoundation.org" , vincenzo.frascino@arm.com, Alexandru Elisei , will@kernel.org, eugenis@google.com, Steven Price X-Spam-Status: No, score=-9.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE,USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1765735587965352462?= X-GMAIL-MSGID: =?utf-8?q?1765735587965352462?= This patch series reworks the logic that handles swapping in page metadata to fix a reported bug [1] where metadata can sometimes not be swapped in correctly after commit c145e0b47c77 ("mm: streamline COW logic in do_swap_page()"). [1] https://lore.kernel.org/all/5050805753ac469e8d727c797c2218a9d780d434.camel@mediatek.com/ Peter Collingbourne (3): mm: Move arch_do_swap_page() call to before swap_free() mm: Call arch_swap_restore() from arch_do_swap_page() and deprecate the latter arm64: mte: Simplify swap tag restoration logic and fix uninitialized tag issue arch/arm64/include/asm/mte.h | 4 ++-- arch/arm64/include/asm/pgtable.h | 14 ++------------ arch/arm64/kernel/mte.c | 32 +++----------------------------- arch/arm64/mm/mteswap.c | 7 +++---- include/linux/pgtable.h | 26 +++++++++++++------------- mm/memory.c | 26 +++++++++++++------------- 6 files changed, 36 insertions(+), 73 deletions(-)