Messages in this thread Patch in this message | | | Date | Fri, 14 Aug 2020 19:27:09 +0200 | Subject | [PATCH 27/35] kasan, arm64: align allocations for HW_TAGS | From | Andrey Konovalov <> |
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Hardware tag-based KASAN uses the memory tagging approach, which requires all allocations to be aligned to the memory granule size. Align the allocations to MTE_GRANULE_SIZE via ARCH_SLAB_MINALIGN when CONFIG_KASAN_HW_TAGS is enabled.
Signed-off-by: Andrey Konovalov <andreyknvl@google.com> --- arch/arm64/include/asm/cache.h | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/arm64/include/asm/cache.h b/arch/arm64/include/asm/cache.h index a4d1b5f771f6..b8a0cae38470 100644 --- a/arch/arm64/include/asm/cache.h +++ b/arch/arm64/include/asm/cache.h @@ -6,6 +6,7 @@ #define __ASM_CACHE_H #include <asm/cputype.h> +#include <asm/mte_asm.h> #define CTR_L1IP_SHIFT 14 #define CTR_L1IP_MASK 3 @@ -50,6 +51,8 @@ #ifdef CONFIG_KASAN_SW_TAGS #define ARCH_SLAB_MINALIGN (1ULL << KASAN_SHADOW_SCALE_SHIFT) +#elif defined(CONFIG_KASAN_HW_TAGS) +#define ARCH_SLAB_MINALIGN MTE_GRANULE_SIZE #endif #ifndef __ASSEMBLY__ -- 2.28.0.220.ged08abb693-goog
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