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| author | Ingo Molnar <mingo@kernel.org> | 2018-10-29 07:20:52 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-10-29 07:20:52 +0100 |
| commit | f0718d792b8a6d4b5ddc929e418ac57cc4897375 (patch) | |
| tree | 3dbaa824ce380e99709fae47c047383ca39c983a /arch/arm/include/asm/assembler.h | |
| parent | efe8eaf7b525f1be26fe20d723d2bfbfcd7455fd (diff) | |
| parent | b59dfdaef173677b0b7e10f375226c0a1114fd20 (diff) | |
| download | talos-op-linux-f0718d792b8a6d4b5ddc929e418ac57cc4897375.tar.gz talos-op-linux-f0718d792b8a6d4b5ddc929e418ac57cc4897375.zip | |
Merge branch 'linus' into perf/urgent, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm/include/asm/assembler.h')
| -rw-r--r-- | arch/arm/include/asm/assembler.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h index b17ee03d280b..88286dd483ff 100644 --- a/arch/arm/include/asm/assembler.h +++ b/arch/arm/include/asm/assembler.h @@ -467,6 +467,17 @@ THUMB( orr \reg , \reg , #PSR_T_BIT ) #endif .endm + .macro uaccess_mask_range_ptr, addr:req, size:req, limit:req, tmp:req +#ifdef CONFIG_CPU_SPECTRE + sub \tmp, \limit, #1 + subs \tmp, \tmp, \addr @ tmp = limit - 1 - addr + addhs \tmp, \tmp, #1 @ if (tmp >= 0) { + subhss \tmp, \tmp, \size @ tmp = limit - (addr + size) } + movlo \addr, #0 @ if (tmp < 0) addr = NULL + csdb +#endif + .endm + .macro uaccess_disable, tmp, isb=1 #ifdef CONFIG_CPU_SW_DOMAIN_PAN /* |
