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[2620:137:e000::1:20]) by mx.google.com with ESMTP id d25-20020a637359000000b005348f910e65si10202434pgn.824.2023.06.13.22.39.04; Tue, 13 Jun 2023 22:39:18 -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=@gmail.com header.s=20221208 header.b=J+TxTDiJ; 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=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241378AbjFNEwZ (ORCPT + 99 others); Wed, 14 Jun 2023 00:52:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40636 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231720AbjFNEwY (ORCPT ); Wed, 14 Jun 2023 00:52:24 -0400 Received: from mail-pl1-x629.google.com (mail-pl1-x629.google.com [IPv6:2607:f8b0:4864:20::629]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5CD6F183 for ; Tue, 13 Jun 2023 21:52:23 -0700 (PDT) Received: by mail-pl1-x629.google.com with SMTP id d9443c01a7336-1b4f8523197so3475685ad.1 for ; Tue, 13 Jun 2023 21:52:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1686718342; x=1689310342; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=YHHOxlInWG/EMNSSTIpmL8pTXVUvf1wMI3WxkD872/o=; b=J+TxTDiJTPboucEa+tW6hFc/DHBLo/YBJMqjafgFNTyxWcBTYOfCddFzS73N91Pryz AZC9GiIHnAE77ICMNwi9m/8hPSAMGDWHzxekljBgoQhxrxTqhlkDuUDWptVLAP9N+hXD d4hZgmTdwLqORB6UgGJMdAfI3Ussb1CrfS9MDORFb8jjQHpGWtGJrGDDAHSaFiF+MWB0 sgeS1cnJd7eZgGyFuIa68zMCoUI/qvyENlyYEnTyoES/74YCcea1Csc6oRiqHkxIgjj5 uEFHR4NYXEe/nLzXsAgv+GzTY/FVXeWyARwUoGSyoE5vBlvAqS3nPHy7KB2X8C99bfrY 3QeQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686718342; x=1689310342; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=YHHOxlInWG/EMNSSTIpmL8pTXVUvf1wMI3WxkD872/o=; b=Avbfy4MgdHj5jfkmqtGycP5upaPYE6djEeORrTlkdsJE5RLmh2clYHXbZAx5gzReyT /NOCTqZzGioNJbOvDVYQkbujghyz5WHBr2YhftsaGTeJIs0RqJC2l+/qBtpMke3wMifp YA/pLsWtFg8cV6UJDStT2iplIV+ifgD/6tvmgLBgHzgh5O96YmVpJsNATbUc/hK/aLbh xY0uo7u5zktMNGthz8qnD24DqhwDzSB4MYg8qpkcartjdSUltWCuSrCHxU0VrVJ3iWlw qs2SY7Q6gKqmBj+Fg6CVm6B+XWjJNlwzUMjl1zKmObiyKOZokQ1vybKc0gvdKMzzXTRF 8how== X-Gm-Message-State: AC+VfDwipWdXkv6CbGku2WAAfKbVpoXY2I3IS2UIooM1HffJr16l4dy2 Rq24N+cLrx9b/RsAOnmDMOx1/Tk/XCs= X-Received: by 2002:a17:902:e892:b0:1b2:3e9f:69d1 with SMTP id w18-20020a170902e89200b001b23e9f69d1mr733076plg.18.1686718342244; Tue, 13 Jun 2023 21:52:22 -0700 (PDT) Received: from octofox.hsd1.ca.comcast.net ([2601:641:401:1d20:bf5f:2e99:78f2:6007]) by smtp.gmail.com with ESMTPSA id z18-20020a170903019200b001acad86ebc5sm11089790plg.33.2023.06.13.21.52.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Jun 2023 21:52:21 -0700 (PDT) From: Max Filippov To: linux-kernel@vger.kernel.org Cc: Chris Zankel , Max Filippov Subject: [PATCH 0/4] xtensa: add load/store exception handler Date: Tue, 13 Jun 2023 21:52:08 -0700 Message-Id: <20230614045212.2534746-1-jcmvbkbc@gmail.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-Spam-Status: No, score=-1.6 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, FROM_LOCAL_NOVOWEL,HK_RANDOM_ENVFROM,HK_RANDOM_FROM,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE 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?1768655326078611829?= X-GMAIL-MSGID: =?utf-8?q?1768655326078611829?= Hello, this series rearranges unaligned exception handler and adds load/store exception handler that allows transparent 1- and 2-byte wide reads from memory attached to an instruction bus of an xtensa core. Max Filippov (4): xtensa: move early_trap_init from kasan_early_init to init_arch xtensa: always install slow handler for unaligned access exception xtensa: rearrange unaligned exception handler xtensa: add load/store exception handler arch/xtensa/Kconfig | 12 ++ arch/xtensa/include/asm/traps.h | 7 + arch/xtensa/kernel/align.S | 256 ++++++++++++++++++++++---------- arch/xtensa/kernel/setup.c | 7 + arch/xtensa/kernel/traps.c | 27 +++- arch/xtensa/mm/kasan_init.c | 2 - 6 files changed, 221 insertions(+), 90 deletions(-)