From: Andrey Konovalov <andreyknvl@google.com> To: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com>, Vincenzo Frascino <vincenzo.frascino@arm.com>, Dmitry Vyukov <dvyukov@google.com>, Andrey Ryabinin <aryabinin@virtuozzo.com>, Alexander Potapenko <glider@google.com>, Marco Elver <elver@google.com>, Evgenii Stepanov <eugenis@google.com>, Branislav Rankov <Branislav.Rankov@arm.com>, Kevin Brodsky <kevin.brodsky@arm.com>, Andrew Morton <akpm@linux-foundation.org>, kasan-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrey Konovalov <andreyknvl@google.com> Subject: [PATCH v8 26/43] arm64: Enable armv8.5-a asm-arch option Date: Thu, 5 Nov 2020 00:18:41 +0100 [thread overview] Message-ID: <c370778bd2f6b4810eaa2ba72cb3583fe05e1183.1604531793.git.andreyknvl@google.com> (raw) In-Reply-To: <cover.1604531793.git.andreyknvl@google.com> From: Vincenzo Frascino <vincenzo.frascino@arm.com> 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. Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> --- Change-Id: I172e15e4c189f073e4c14a10276b276092e76536 --- arch/arm64/Kconfig | 4 ++++ arch/arm64/Makefile | 5 +++++ 2 files changed, 9 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index d58b4dcc6d44..cebbd07ba27c 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1591,6 +1591,9 @@ 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 @@ -1665,6 +1668,7 @@ 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 5789c2d18d43..50ad9cbccb51 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -100,6 +100,11 @@ 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)"' -- 2.29.1.341.ge80a0c044ae-goog
WARNING: multiple messages have this Message-ID (diff)
From: Andrey Konovalov <andreyknvl@google.com> To: Catalin Marinas <catalin.marinas@arm.com> Cc: linux-arm-kernel@lists.infradead.org, Marco Elver <elver@google.com>, Andrey Konovalov <andreyknvl@google.com>, Kevin Brodsky <kevin.brodsky@arm.com>, Will Deacon <will.deacon@arm.com>, Branislav Rankov <Branislav.Rankov@arm.com>, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Alexander Potapenko <glider@google.com>, Evgenii Stepanov <eugenis@google.com>, Andrey Ryabinin <aryabinin@virtuozzo.com>, Andrew Morton <akpm@linux-foundation.org>, Vincenzo Frascino <vincenzo.frascino@arm.com>, Dmitry Vyukov <dvyukov@google.com> Subject: [PATCH v8 26/43] arm64: Enable armv8.5-a asm-arch option Date: Thu, 5 Nov 2020 00:18:41 +0100 [thread overview] Message-ID: <c370778bd2f6b4810eaa2ba72cb3583fe05e1183.1604531793.git.andreyknvl@google.com> (raw) In-Reply-To: <cover.1604531793.git.andreyknvl@google.com> From: Vincenzo Frascino <vincenzo.frascino@arm.com> 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. Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> --- Change-Id: I172e15e4c189f073e4c14a10276b276092e76536 --- arch/arm64/Kconfig | 4 ++++ arch/arm64/Makefile | 5 +++++ 2 files changed, 9 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index d58b4dcc6d44..cebbd07ba27c 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1591,6 +1591,9 @@ 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 @@ -1665,6 +1668,7 @@ 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 5789c2d18d43..50ad9cbccb51 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -100,6 +100,11 @@ 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)"' -- 2.29.1.341.ge80a0c044ae-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-11-04 23:20 UTC|newest] Thread overview: 136+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-11-04 23:18 [PATCH v8 00/43] kasan: add hardware tag-based mode for arm64 Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 01/43] kasan: drop unnecessary GPL text from comment headers Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 02/43] kasan: KASAN_VMALLOC depends on KASAN_GENERIC Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 03/43] kasan: group vmalloc code Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 04/43] s390/kasan: include asm/page.h from asm/kasan.h Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 05/43] kasan: shadow declarations only for software modes Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 06/43] kasan: rename (un)poison_shadow to (un)poison_memory Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 07/43] kasan: rename KASAN_SHADOW_* to KASAN_GRANULE_* Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 08/43] kasan: only build init.c for software modes Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 09/43] kasan: split out shadow.c from common.c Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 10/43] kasan: define KASAN_GRANULE_PAGE Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 11/43] kasan: rename report and tags files Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 12/43] kasan: don't duplicate config dependencies Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 13/43] kasan: hide invalid free check implementation Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 14/43] kasan: decode stack frame only with KASAN_STACK_ENABLE Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 15/43] kasan, arm64: only init shadow for software modes Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 16/43] kasan, arm64: only use kasan_depth " Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 17/43] kasan, arm64: move initialization message Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-05 15:59 ` Catalin Marinas 2020-11-05 15:59 ` Catalin Marinas 2020-11-04 23:18 ` [PATCH v8 18/43] kasan, arm64: rename kasan_init_tags and mark as __init Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-05 16:00 ` Catalin Marinas 2020-11-05 16:00 ` Catalin Marinas 2020-11-04 23:18 ` [PATCH v8 19/43] kasan: rename addr_has_shadow to addr_has_metadata Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 20/43] kasan: rename print_shadow_for_address to print_memory_metadata Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 21/43] kasan: kasan_non_canonical_hook only for software modes Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 22/43] kasan: rename SHADOW layout macros to META Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 23/43] kasan: separate metadata_fetch_row for each mode Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 24/43] kasan, arm64: don't allow SW_TAGS with ARM64_MTE Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 25/43] kasan: introduce CONFIG_KASAN_HW_TAGS Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov [this message] 2020-11-04 23:18 ` [PATCH v8 26/43] arm64: Enable armv8.5-a asm-arch option Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 27/43] arm64: mte: Add in-kernel MTE helpers Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 28/43] arm64: mte: Reset the page tag in page->flags Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-05 15:59 ` Catalin Marinas 2020-11-05 15:59 ` Catalin Marinas 2020-11-06 11:46 ` Vincenzo Frascino 2020-11-06 11:46 ` Vincenzo Frascino 2020-11-04 23:18 ` [PATCH v8 29/43] arm64: mte: Add in-kernel tag fault handler Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-05 16:57 ` Catalin Marinas 2020-11-05 16:57 ` Catalin Marinas 2020-11-04 23:18 ` [PATCH v8 30/43] arm64: kasan: Allow enabling in-kernel MTE Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-05 11:16 ` Vincenzo Frascino 2020-11-05 11:16 ` Vincenzo Frascino 2020-11-05 11:35 ` Andrey Konovalov 2020-11-05 11:35 ` Andrey Konovalov 2020-11-05 11:35 ` Andrey Konovalov 2020-11-05 11:42 ` Vincenzo Frascino 2020-11-05 11:42 ` Vincenzo Frascino 2020-11-05 12:14 ` Andrey Konovalov 2020-11-05 12:14 ` Andrey Konovalov 2020-11-05 12:14 ` Andrey Konovalov 2020-11-05 14:17 ` Vincenzo Frascino 2020-11-05 14:17 ` Vincenzo Frascino 2020-11-05 17:27 ` Andrey Konovalov 2020-11-05 17:27 ` Andrey Konovalov 2020-11-05 17:27 ` Andrey Konovalov 2020-11-05 17:25 ` Catalin Marinas 2020-11-05 17:25 ` Catalin Marinas 2020-11-05 17:29 ` Andrey Konovalov 2020-11-05 17:29 ` Andrey Konovalov 2020-11-05 17:29 ` Andrey Konovalov 2020-11-05 17:39 ` Catalin Marinas 2020-11-05 17:39 ` Catalin Marinas 2020-11-05 18:09 ` Andrey Konovalov 2020-11-05 18:09 ` Andrey Konovalov 2020-11-05 18:09 ` Andrey Konovalov 2020-11-06 11:11 ` Vincenzo Frascino 2020-11-06 11:11 ` Vincenzo Frascino 2020-11-04 23:18 ` [PATCH v8 31/43] arm64: mte: Convert gcr_user into an exclude mask Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 32/43] arm64: mte: Switch GCR_EL1 in kernel entry and exit Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-05 17:30 ` Catalin Marinas 2020-11-05 17:30 ` Catalin Marinas 2020-11-05 17:33 ` Andrey Konovalov 2020-11-05 17:33 ` Andrey Konovalov 2020-11-05 17:33 ` Andrey Konovalov 2020-11-05 17:42 ` Catalin Marinas 2020-11-05 17:42 ` Catalin Marinas 2020-11-04 23:18 ` [PATCH v8 33/43] arm64: kasan: Align allocations for HW_TAGS Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 34/43] arm64: kasan: Add arch layer for memory tagging helpers Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 35/43] kasan: define KASAN_GRANULE_SIZE for HW_TAGS Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 36/43] kasan, x86, s390: update undef CONFIG_KASAN Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 37/43] kasan, arm64: expand CONFIG_KASAN checks Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-05 17:32 ` Catalin Marinas 2020-11-05 17:32 ` Catalin Marinas 2020-11-04 23:18 ` [PATCH v8 38/43] kasan, arm64: implement HW_TAGS runtime Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:48 ` Andrey Konovalov 2020-11-04 23:48 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 39/43] kasan, arm64: print report from tag fault handler Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 40/43] kasan, mm: reset tags when accessing metadata Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 41/43] kasan, arm64: enable CONFIG_KASAN_HW_TAGS Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 42/43] kasan: add documentation for hardware tag-based mode Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov 2020-11-04 23:18 ` [PATCH v8 43/43] kselftest/arm64: Check GCR_EL1 after context switch Andrey Konovalov 2020-11-04 23:18 ` Andrey Konovalov
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