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 X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3FFA1C433DB for ; Wed, 23 Dec 2020 18:29:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 114E42253A for ; Wed, 23 Dec 2020 18:29:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728345AbgLWS32 (ORCPT ); Wed, 23 Dec 2020 13:29:28 -0500 Received: from mail.kernel.org ([198.145.29.99]:44440 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728334AbgLWS32 (ORCPT ); Wed, 23 Dec 2020 13:29:28 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id A2D0C22287; Wed, 23 Dec 2020 18:28:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1608748140; bh=Qlm3I25LriV0HNeXrcrNh+AXf/+jel777d1bNBBEKlo=; h=Date:From:To:Subject:From; b=iEkBVG3fss0bof11b+dIs0YyAdHFfSMFlTtfbz/ox9bNqX/OEiQtjQjz30XQc8Qcq 750+XJFRBRpcveJneDc1GJgL2Xs17d7n9/HEkL9HUfK+qyM98jMKtjBhT80hQp7Gnw 6tGr/17sMSCvKMM1QlXq294f/TZWUVinxmsEwx2w= Date: Wed, 23 Dec 2020 10:28:59 -0800 From: akpm@linux-foundation.org To: andreyknvl@google.com, aryabinin@virtuozzo.com, Branislav.Rankov@arm.com, catalin.marinas@arm.com, dvyukov@google.com, elver@google.com, eugenis@google.com, glider@google.com, gor@linux.ibm.com, kevin.brodsky@arm.com, mm-commits@vger.kernel.org, vincenzo.frascino@arm.com, will.deacon@arm.com Subject: [merged] arm64-enable-armv85-a-asm-arch-option.patch removed from -mm tree Message-ID: <20201223182859.5uSR5GE8Y%akpm@linux-foundation.org> User-Agent: s-nail v14.8.16 Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: arm64: enable armv8.5-a asm-arch option has been removed from the -mm tree. Its filename was arm64-enable-armv85-a-asm-arch-option.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Vincenzo Frascino Subject: arm64: enable armv8.5-a asm-arch option Hardware tag-based KASAN relies on Memory Tagging Extension (MTE) which is an armv8.5-a architecture extension. Enable the correct asm option when the compiler supports it in order to allow the usage of ALTERNATIVE()s with MTE instructions. Link: https://lkml.kernel.org/r/d03d1157124ea3532eaeb77507988733f5734986.1606161801.git.andreyknvl@google.com Signed-off-by: Vincenzo Frascino Signed-off-by: Andrey Konovalov Reviewed-by: Catalin Marinas Reviewed-by: Alexander Potapenko Tested-by: Vincenzo Frascino Cc: Andrey Ryabinin Cc: Branislav Rankov Cc: Dmitry Vyukov Cc: Evgenii Stepanov Cc: Kevin Brodsky Cc: Marco Elver Cc: Vasily Gorbik Cc: Will Deacon Signed-off-by: Andrew Morton --- arch/arm64/Kconfig | 4 ++++ arch/arm64/Makefile | 5 +++++ 2 files changed, 9 insertions(+) --- a/arch/arm64/Kconfig~arm64-enable-armv85-a-asm-arch-option +++ a/arch/arm64/Kconfig @@ -1571,6 +1571,9 @@ endmenu menu "ARMv8.5 architectural features" +config AS_HAS_ARMV8_5 + def_bool $(cc-option,-Wa$(comma)-march=armv8.5-a) + config ARM64_BTI bool "Branch Target Identification support" default y @@ -1645,6 +1648,7 @@ config ARM64_MTE bool "Memory Tagging Extension support" default y depends on ARM64_AS_HAS_MTE && ARM64_TAGGED_ADDR_ABI + depends on AS_HAS_ARMV8_5 select ARCH_USES_HIGH_VMA_FLAGS help Memory Tagging (part of the ARMv8.5 Extensions) provides --- a/arch/arm64/Makefile~arm64-enable-armv85-a-asm-arch-option +++ a/arch/arm64/Makefile @@ -96,6 +96,11 @@ ifeq ($(CONFIG_AS_HAS_ARMV8_4), y) asm-arch := armv8.4-a endif +ifeq ($(CONFIG_AS_HAS_ARMV8_5), y) +# make sure to pass the newest target architecture to -march. +asm-arch := armv8.5-a +endif + ifdef asm-arch KBUILD_CFLAGS += -Wa,-march=$(asm-arch) \ -DARM64_ASM_ARCH='"$(asm-arch)"' _ Patches currently in -mm which might be from vincenzo.frascino@arm.com are