Commit d780613a authored Oct 14, 2009 by Paul Mundt

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>

parent 36c87199

arch/sh/kernel/smp.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -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);