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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2019-04-26 19:23:32 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-05-02 18:20:26 +0300 |
| commit | b4abe38fd698ace6942edeeb79a5b8a60a7af4fa (patch) | |
| tree | 144790e1e4be1cbcffdc1425eda2606f0a3c3259 /arch/powerpc/include/asm/fixmap.h | |
| parent | a67beca077ef79e971443aa6af6b14d4b3fb3bd6 (diff) | |
| download | linux-b4abe38fd698ace6942edeeb79a5b8a60a7af4fa.tar.xz | |
powerpc/32: prepare shadow area for KASAN
This patch prepares a shadow area for KASAN.
The shadow area will be at the top of the kernel virtual
memory space above the fixmap area and will occupy one
eighth of the total kernel virtual memory space.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/fixmap.h')
| -rw-r--r-- | arch/powerpc/include/asm/fixmap.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/fixmap.h b/arch/powerpc/include/asm/fixmap.h index b9fbed84ddca..0cfc365d814b 100644 --- a/arch/powerpc/include/asm/fixmap.h +++ b/arch/powerpc/include/asm/fixmap.h @@ -22,7 +22,12 @@ #include <asm/kmap_types.h> #endif +#ifdef CONFIG_KASAN +#include <asm/kasan.h> +#define FIXADDR_TOP (KASAN_SHADOW_START - PAGE_SIZE) +#else #define FIXADDR_TOP ((unsigned long)(-PAGE_SIZE)) +#endif /* * Here we define all the compile-time 'special' virtual |