Ralf Baechle wrote:
On Mon, Oct 27, 2008 at 05:02:39PM -0700, David Daney wrote:
MIPS SMP code currently assumes that the boot CPU will be CPU0
of the system. For some systems, this may not be the case.
It always the logic CPU 0 though the physical number might be different.
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index b79ea70..e2597ef 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -195,12 +195,14 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
/* preload SMP state for boot cpu */
void __devinit smp_prepare_boot_cpu(void)
{
+#ifndef MIPS_DISABLE_BOOT_CPU_ZERO
/*
* This assumes that bootup is always handled by the processor
* with the logic and physical number 0.
*/
__cpu_number_map[0] = 0;
__cpu_logical_map[0] = 0;
+#endif
This assignment is redundant anyway - the kernel is starting with the array
zeroed. So just remove this entire initialization and do your array
initialization in your mp_ops->smp_setup.
We already do that. I will just delete this section unconditionally.
David Daney
