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[SPARC64]: Do not try to synchronize %stick registers on SUN4V.

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Writes by privileged code are not allowed.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2006-02-11 23:22:47 -08:00
parent 7aa6264543
commit 02fead7505
1 changed files with 5 additions and 1 deletions
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4
arch/sparc64/kernel/smp.c
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@@ -1278,6 +1278,10 @@ int __devinit __cpu_up(unsigned int cpu)
if (!cpu_isset(cpu, cpu_online_map)) { if (!cpu_isset(cpu, cpu_online_map)) {
ret = -ENODEV; ret = -ENODEV;
} else { } else {
/* On SUN4V, writes to %tick and %stick are
* not allowed.
*/
if (tlb_type != hypervisor)
smp_synchronize_one_tick(cpu); smp_synchronize_one_tick(cpu);
} }
} }