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| author | Paul Mundt <lethal@linux-sh.org> | 2009-10-14 11:51:28 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-10-14 11:51:28 +0900 |
| commit | d780613acc0eeea89e1b3a7d9db765e0f2a4a950 (patch) | |
| tree | 9161ee46a9ebe7383c05838cea9b090b04d6ba5c /arch/sh | |
| parent | 36c871992697eaaf88a3682c2c3003a41c54b8c0 (diff) | |
| download | blackbird-op-linux-d780613acc0eeea89e1b3a7d9db765e0f2a4a950.tar.gz blackbird-op-linux-d780613acc0eeea89e1b3a7d9db765e0f2a4a950.zip | |
sh: Only invalidate the I-cache range for secondary CPUs stack_start.
Secondary CPUs already take care of the D-cache bits through the common
cache initialization path, and the only thing that is necessary after
twiddling around with stack_start is ensuring that the I-cache changes
are visible (particularly since this tends to be the only part lacking
coherency).
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh')
| -rw-r--r-- | arch/sh/kernel/smp.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c index 442d8d47a41e..6a27c657648d 100644 --- a/arch/sh/kernel/smp.c +++ b/arch/sh/kernel/smp.c @@ -120,7 +120,9 @@ int __cpuinit __cpu_up(unsigned int cpu) stack_start.bss_start = 0; /* don't clear bss for secondary cpus */ stack_start.start_kernel_fn = start_secondary; - flush_cache_all(); + flush_icache_range((unsigned long)&stack_start, + (unsigned long)&stack_start + sizeof(stack_start)); + wmb(); plat_start_cpu(cpu, (unsigned long)_stext); |
