From 6bbd497f027332b14cf2a6792c418c32286b66c2 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Tue, 13 Aug 2019 17:01:05 +0100 Subject: arm64: memory: Implement __tag_set() as common function There's no need for __tag_set() to be a complicated macro when CONFIG_KASAN_SW_TAGS=y and a simple static inline otherwise. Rewrite the thing as a common static inline function. Tested-by: Steve Capper Reviewed-by: Steve Capper Tested-by: Geert Uytterhoeven Reviewed-by: Catalin Marinas Reviewed-by: Mark Rutland Signed-off-by: Will Deacon --- arch/arm64/include/asm/memory.h | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'arch/arm64/include') diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h index a7a985602cba..fb0062555305 100644 --- a/arch/arm64/include/asm/memory.h +++ b/arch/arm64/include/asm/memory.h @@ -218,20 +218,20 @@ static inline unsigned long kaslr_offset(void) #ifdef CONFIG_KASAN_SW_TAGS #define __tag_shifted(tag) ((u64)(tag) << 56) -#define __tag_set(addr, tag) (__typeof__(addr))( \ - ((u64)(addr) & ~__tag_shifted(0xff)) | __tag_shifted(tag)) #define __tag_reset(addr) untagged_addr(addr) #define __tag_get(addr) (__u8)((u64)(addr) >> 56) #else -static inline const void *__tag_set(const void *addr, u8 tag) -{ - return addr; -} - +#define __tag_shifted(tag) 0UL #define __tag_reset(addr) (addr) #define __tag_get(addr) 0 #endif +static inline const void *__tag_set(const void *addr, u8 tag) +{ + u64 __addr = (u64)addr & ~__tag_shifted(0xff); + return (const void *)(__addr | __tag_shifted(tag)); +} + /* * Physical vs virtual RAM address space conversion. These are * private definitions which should NOT be used outside memory.h -- cgit v1.2.3