Message ID | 0215863872e20c790d7a17bf5f283512a06ab9ff.1601593784.git.andreyknvl@google.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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Thu, 01 Oct 2020 16:11:40 -0700 (PDT) Date: Fri, 2 Oct 2020 01:10:24 +0200 In-Reply-To: <cover.1601593784.git.andreyknvl@google.com> Message-Id: <0215863872e20c790d7a17bf5f283512a06ab9ff.1601593784.git.andreyknvl@google.com> Mime-Version: 1.0 References: <cover.1601593784.git.andreyknvl@google.com> X-Mailer: git-send-email 2.28.0.709.gb0816b6eb0-goog Subject: [PATCH v4 23/39] arm64: Enable armv8.5-a asm-arch option From: Andrey Konovalov <andreyknvl@google.com> To: Dmitry Vyukov <dvyukov@google.com>, Vincenzo Frascino <vincenzo.frascino@arm.com>, Catalin Marinas <catalin.marinas@arm.com>, kasan-dev@googlegroups.com Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>, Alexander Potapenko <glider@google.com>, Marco Elver <elver@google.com>, Evgenii Stepanov <eugenis@google.com>, Elena Petrova <lenaptr@google.com>, Branislav Rankov <Branislav.Rankov@arm.com>, Kevin Brodsky <kevin.brodsky@arm.com>, Will Deacon <will.deacon@arm.com>, Andrew Morton <akpm@linux-foundation.org>, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrey Konovalov <andreyknvl@google.com> Content-Type: text/plain; charset="UTF-8" X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: <linux-mm.kvack.org> |
Series |
kasan: add hardware tag-based mode for arm64
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diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index e875db8e1c86..192544fcd1a5 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1600,6 +1600,9 @@ 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 @@ -1676,6 +1679,7 @@ 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 diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 130569f90c54..afcd61f7d2b0 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -94,6 +94,11 @@ 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)"'