Re: [PATCH v3 32/39] kasan: define KASAN_GRANULE_SIZE for HW_TAGS
From: Andrey Konovalov <hidden>
Date: 2020-10-01 21:59:23
Also in:
linux-mm, lkml
On Thu, Oct 1, 2020 at 7:58 PM [off-list ref] wrote:
On Fri, Sep 25, 2020 at 12:50AM +0200, Andrey Konovalov wrote:quoted
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 <redacted> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>Reviewed-by: Marco Elver <elver@google.com>quoted
--- 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 9c73f324e3ce..bd51ab72c002 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)Why braces? Shouldn't MTE_GRANULE_SIZE already have braces?
Will fix in v4, thanks!
quoted
+#endif + #define KASAN_GRANULE_MASK (KASAN_GRANULE_SIZE - 1) #define KASAN_GRANULE_PAGE (KASAN_GRANULE_SIZE << PAGE_SHIFT) -- 2.28.0.681.g6f77f65b4e-goog
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