diff options
Diffstat (limited to 'arch/arm64/include/asm/memory.h')
| -rw-r--r-- | arch/arm64/include/asm/memory.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h index 9dd08cd339c3..78e5163836a0 100644 --- a/arch/arm64/include/asm/memory.h +++ b/arch/arm64/include/asm/memory.h @@ -180,6 +180,7 @@ #include <linux/compiler.h> #include <linux/mmdebug.h> #include <linux/types.h> +#include <asm/boot.h> #include <asm/bug.h> #if VA_BITS > 48 @@ -203,6 +204,16 @@ static inline unsigned long kaslr_offset(void) return kimage_vaddr - KIMAGE_VADDR; } +static inline bool kaslr_enabled(void) +{ + /* + * The KASLR offset modulo MIN_KIMG_ALIGN is taken from the physical + * placement of the image rather than from the seed, so a displacement + * of less than MIN_KIMG_ALIGN means that no seed was provided. + */ + return kaslr_offset() >= MIN_KIMG_ALIGN; +} + /* * Allow all memory at the discovery stage. We will clip it later. */ |