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 B401DC74A4B for ; Sun, 12 Mar 2023 20:28:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230212AbjCLU2h (ORCPT ); Sun, 12 Mar 2023 16:28:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36556 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230215AbjCLU2Y (ORCPT ); Sun, 12 Mar 2023 16:28:24 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C778F2F79E for ; Sun, 12 Mar 2023 13:28:22 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 6DE97B80C63 for ; Sun, 12 Mar 2023 20:28:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 06312C433EF; Sun, 12 Mar 2023 20:28:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1678652900; bh=JuXuN8s2rhkGhKkXq2knvllygd1u7T1sMccWtTdLmKA=; h=Date:To:From:Subject:From; b=Q9N57w4tanWMPcEIc2VPx+9S5Eqi5UNTI3DOUEBDteaXfmtCB6MmbzEss8ac9bNhy PmV8IHwTtFdRNvCspAyDmnKTwhWFFx62wRJhdI7wSaL8r0uV3LO77W+51Hyjm4y/gb oCnR0ZlJ5862xhA4Lt3taHvgtsabsy5wMAAl5z4A= Date: Sun, 12 Mar 2023 13:28:19 -0700 To: mm-commits@vger.kernel.org, will@kernel.org, vincenzo.frascino@arm.com, ryabinin.a.a@gmail.com, pcc@google.com, ouyangweizhao@zeku.com, glider@google.com, eugenis@google.com, elver@google.com, dvyukov@google.com, catalin.marinas@arm.com, andreyknvl@google.com, akpm@linux-foundation.org From: Andrew Morton Subject: + kasan-arm64-add-arch_suppress_tag_checks_start-stop.patch added to mm-unstable branch Message-Id: <20230312202820.06312C433EF@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: kasan, arm64: add arch_suppress_tag_checks_start/stop has been added to the -mm mm-unstable branch. Its filename is kasan-arm64-add-arch_suppress_tag_checks_start-stop.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kasan-arm64-add-arch_suppress_tag_checks_start-stop.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Andrey Konovalov Subject: kasan, arm64: add arch_suppress_tag_checks_start/stop Date: Sat, 11 Mar 2023 00:43:32 +0100 Add two new tagging-related routines arch_suppress_tag_checks_start/stop that suppress MTE tag checking via the TCO register. These rouines are used in the next patch. Link: https://lkml.kernel.org/r/75a362551c3c54b70ae59a3492cabb51c105fa6b.1678491668.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov Cc: Alexander Potapenko Cc: Andrey Ryabinin Cc: Catalin Marinas Cc: Dmitry Vyukov Cc: Evgenii Stepanov Cc: Marco Elver Cc: Peter Collingbourne Cc: Vincenzo Frascino Cc: Weizhao Ouyang Cc: Will Deacon Signed-off-by: Andrew Morton --- --- a/arch/arm64/include/asm/memory.h~kasan-arm64-add-arch_suppress_tag_checks_start-stop +++ a/arch/arm64/include/asm/memory.h @@ -264,6 +264,8 @@ static inline const void *__tag_set(cons #define arch_enable_tag_checks_sync() mte_enable_kernel_sync() #define arch_enable_tag_checks_async() mte_enable_kernel_async() #define arch_enable_tag_checks_asymm() mte_enable_kernel_asymm() +#define arch_suppress_tag_checks_start() __mte_enable_tco() +#define arch_suppress_tag_checks_stop() __mte_disable_tco() #define arch_force_async_tag_fault() mte_check_tfsr_exit() #define arch_get_random_tag() mte_get_random_tag() #define arch_get_mem_tag(addr) mte_get_mem_tag(addr) --- a/mm/kasan/kasan.h~kasan-arm64-add-arch_suppress_tag_checks_start-stop +++ a/mm/kasan/kasan.h @@ -398,6 +398,8 @@ static inline const void *arch_kasan_set #define hw_enable_tag_checks_sync() arch_enable_tag_checks_sync() #define hw_enable_tag_checks_async() arch_enable_tag_checks_async() #define hw_enable_tag_checks_asymm() arch_enable_tag_checks_asymm() +#define hw_suppress_tag_checks_start() arch_suppress_tag_checks_start() +#define hw_suppress_tag_checks_stop() arch_suppress_tag_checks_stop() #define hw_force_async_tag_fault() arch_force_async_tag_fault() #define hw_get_random_tag() arch_get_random_tag() #define hw_get_mem_tag(addr) arch_get_mem_tag(addr) _ Patches currently in -mm which might be from andreyknvl@google.com are kasan-drop-empty-tagging-related-defines.patch kasan-arm64-rename-tagging-related-routines.patch kasan-arm64-add-arch_suppress_tag_checks_start-stop.patch kasan-suppress-recursive-reports-for-hw_tags.patch kcov-improve-documentation.patch kcov-improve-documentation-v2.patch kcov-improve-documentation-v3.patch