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[SPARC64]: Do not try to synchronize %stick registers on SUN4V.
author
David S. Miller
<davem@sunset.davemloft.net>
Sun, 12 Feb 2006 07:22:47 +0000
(23:22 -0800)
committer
David S. Miller
<davem@sunset.davemloft.net>
Mon, 20 Mar 2006 09:12:27 +0000
(
01:12
-0800)
Writes by privileged code are not allowed.
Signed-off-by: David S. Miller <davem@davemloft.net>
arch/sparc64/kernel/smp.c
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diff --git
a/arch/sparc64/kernel/smp.c
b/arch/sparc64/kernel/smp.c
index
d637168
..
2dbe008
100644
(file)
--- a/
arch/sparc64/kernel/smp.c
+++ b/
arch/sparc64/kernel/smp.c
@@
-1278,7
+1278,11
@@
int __devinit __cpu_up(unsigned int cpu)
if (!cpu_isset(cpu, cpu_online_map)) {
ret = -ENODEV;
} else {
- smp_synchronize_one_tick(cpu);
+ /* On SUN4V, writes to %tick and %stick are
+ * not allowed.
+ */
+ if (tlb_type != hypervisor)
+ smp_synchronize_one_tick(cpu);
}
}
return ret;