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| author | Mark Rutland <mark.rutland@arm.com> | 2015-03-13 17:14:34 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2015-03-17 17:58:24 +0100 |
| commit | 137650aad96c9594683445e41afa8ac5a2097520 (patch) | |
| tree | 3faff891a324ef948471492d3cda2e8ca7ecbcca /arch/arm64/include | |
| parent | arm64: Implement cpu_relax as yield (diff) | |
| download | linux-137650aad96c9594683445e41afa8ac5a2097520.tar.xz linux-137650aad96c9594683445e41afa8ac5a2097520.zip | |
arm64: apply alternatives for !SMP kernels
Currently we only perform alternative patching for kernels built with
CONFIG_SMP, as we call apply_alternatives_all() in smp.c, which is only
built for CONFIG_SMP. Thus !SMP kernels may not have necessary
alternatives patched in.
This patch ensures that we call apply_alternatives_all() once all CPUs
are booted, even for !SMP kernels, by having the smp_init_cpus() stub
call this for !SMP kernels via up_late_init. A new wrapper,
do_post_cpus_up_work, is added so we can hook other calls here later
(e.g. boot mode logging).
Cc: Andre Przywara <andre.przywara@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Fixes: e039ee4ee3fcf174 ("arm64: add alternative runtime patching")
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/smp_plat.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/smp_plat.h b/arch/arm64/include/asm/smp_plat.h index 59e282311b58..8dcd61e32176 100644 --- a/arch/arm64/include/asm/smp_plat.h +++ b/arch/arm64/include/asm/smp_plat.h @@ -40,4 +40,6 @@ static inline u32 mpidr_hash_size(void) extern u64 __cpu_logical_map[NR_CPUS]; #define cpu_logical_map(cpu) __cpu_logical_map[cpu] +void __init do_post_cpus_up_work(void); + #endif /* __ASM_SMP_PLAT_H */ |