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Date: Fri, 13 Nov 2020 23:16:02 +0100 From: Andrey Konovalov <andreyknvl@...gle.com> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Catalin Marinas <catalin.marinas@....com>, Will Deacon <will.deacon@....com>, Vincenzo Frascino <vincenzo.frascino@....com>, Dmitry Vyukov <dvyukov@...gle.com>, Andrey Ryabinin <aryabinin@...tuozzo.com>, Alexander Potapenko <glider@...gle.com>, Marco Elver <elver@...gle.com>, Evgenii Stepanov <eugenis@...gle.com>, Branislav Rankov <Branislav.Rankov@....com>, Kevin Brodsky <kevin.brodsky@....com>, kasan-dev@...glegroups.com, linux-arm-kernel@...ts.infradead.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org, Andrey Konovalov <andreyknvl@...gle.com> Subject: [PATCH mm v10 34/42] kasan: define KASAN_GRANULE_SIZE for HW_TAGS Hardware tag-based KASAN has granules of MTE_GRANULE_SIZE. Define KASAN_GRANULE_SIZE to MTE_GRANULE_SIZE for CONFIG_KASAN_HW_TAGS. Signed-off-by: Andrey Konovalov <andreyknvl@...gle.com> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@....com> Reviewed-by: Marco Elver <elver@...gle.com> Reviewed-by: Alexander Potapenko <glider@...gle.com> --- Change-Id: I5d1117e6a991cbca00d2cfb4ba66e8ae2d8f513a --- mm/kasan/kasan.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index bc4f28156157..92cb2c16e314 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -5,7 +5,13 @@ #include <linux/kasan.h> #include <linux/stackdepot.h> +#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS) #define KASAN_GRANULE_SIZE (1UL << KASAN_SHADOW_SCALE_SHIFT) +#else +#include <asm/mte-kasan.h> +#define KASAN_GRANULE_SIZE MTE_GRANULE_SIZE +#endif + #define KASAN_GRANULE_MASK (KASAN_GRANULE_SIZE - 1) #define KASAN_MEMORY_PER_SHADOW_PAGE (KASAN_GRANULE_SIZE << PAGE_SHIFT) -- 2.29.2.299.gdc1121823c-goog
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