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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 948F6C77B7F for ; Fri, 12 May 2023 23:58:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240881AbjELX6s (ORCPT ); Fri, 12 May 2023 19:58:48 -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-Google-Smtp-Source: ACHHUZ6Xqq7MGiMsUQfneARzg6AUQPg2lvYwWTI9d6Hj3TtAyRo8Lm8UF/z4RPzRYWDX4z/Wbww4swU= 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?q?Qun-wei=20Lin=20=28=E6=9E=97=E7=BE=A4=E5=B4=B4=29?=" , linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, "surenb@google.com" , "david@redhat.com" , "=?UTF-8?q?Chinwen=20Chang=20=28=E5=BC=B5=E9=8C=A6=E6=96=87=29?=" , "kasan-dev@googlegroups.com" , "=?UTF-8?q?Kuan-Ying=20Lee=20=28=E6=9D=8E=E5=86=A0=E7=A9=8E=29?=" , "=?UTF-8?q?Casper=20Li=20=28=E6=9D=8E=E4=B8=AD=E6=A6=AE=29?=" , "gregkh@linuxfoundation.org" , vincenzo.frascino@arm.com, Alexandru Elisei , will@kernel.org, eugenis@google.com, Steven Price Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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(-) -- 2.40.1.606.ga4b1b128d6-goog