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| author | Andrey Konovalov <andreyknvl@google.com> | 2018-03-01 18:07:12 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-03-06 19:52:33 +0100 |
| commit | 9597e74396c02c8189215dcdfc08088a9b8d8087 (patch) | |
| tree | fa798c3b35bd7132b8f52ecd6d157c110a839dae /arch/arm64/Makefile | |
| parent | arm64: Revert L1_CACHE_SHIFT back to 6 (64-byte cache line size) (diff) | |
| download | linux-9597e74396c02c8189215dcdfc08088a9b8d8087.tar.xz linux-9597e74396c02c8189215dcdfc08088a9b8d8087.zip | |
kasan, arm64: clean up KASAN_SHADOW_SCALE_SHIFT usage
This is a follow up patch to the series I sent recently that cleans up
KASAN_SHADOW_SCALE_SHIFT usage (which value was hardcoded and scattered
all over the code). This fixes the one place that I forgot to fix.
The change is purely aesthetical, instead of hardcoding the value for
KASAN_SHADOW_SCALE_SHIFT in arch/arm64/Makefile, an appropriate variable
is declared and used.
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/Makefile')
| -rw-r--r-- | arch/arm64/Makefile | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index b481b4a7c011..4bb18aee4846 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -97,12 +97,14 @@ else TEXT_OFFSET := 0x00080000 endif -# KASAN_SHADOW_OFFSET = VA_START + (1 << (VA_BITS - 3)) - (1 << 61) +# KASAN_SHADOW_OFFSET = VA_START + (1 << (VA_BITS - KASAN_SHADOW_SCALE_SHIFT)) +# - (1 << (64 - KASAN_SHADOW_SCALE_SHIFT)) # in 32-bit arithmetic +KASAN_SHADOW_SCALE_SHIFT := 3 KASAN_SHADOW_OFFSET := $(shell printf "0x%08x00000000\n" $$(( \ - (0xffffffff & (-1 << ($(CONFIG_ARM64_VA_BITS) - 32))) \ - + (1 << ($(CONFIG_ARM64_VA_BITS) - 32 - 3)) \ - - (1 << (64 - 32 - 3)) )) ) + (0xffffffff & (-1 << ($(CONFIG_ARM64_VA_BITS) - 32))) \ + + (1 << ($(CONFIG_ARM64_VA_BITS) - 32 - $(KASAN_SHADOW_SCALE_SHIFT))) \ + - (1 << (64 - 32 - $(KASAN_SHADOW_SCALE_SHIFT))) )) ) export TEXT_OFFSET GZFLAGS |