path: root/arch/powerpc/platforms/pseries/xics.c
diff options
authorAnton Blanchard <anton@samba.org>2007-10-01 07:45:55 +1000
committerPaul Mackerras <paulus@samba.org>2007-10-02 11:48:14 +1000
commite48395f1753cab0fde6c03f1db833cece9ef2ba0 (patch)
tree19d2002053bcb685f43534b41c751416f1bcf7ad /arch/powerpc/platforms/pseries/xics.c
parentFix possible splice() mmap_sem deadlock (diff)
[POWERPC] Fix xics set_affinity code
On a POWER6 machine running 2.6.23-rc8 I sometimes see the following error: xics_set_affinity: No online cpus in the mask 00000000,00000000,00000000,00000001 for irq 20 In a desperate attempt to get a changelog entry in 2.6.23, I took a look into it. It turns out we are passing a real and not a virtual irq into get_irq_server. This works for the case where hwirq < NR_IRQS and we set virq = hwirq. In my case however hwirq = 590082 and we try and access irq_desc[590082], slightly past the end at 512 entries. Lucky we ship lots of memory with our machines. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to '')
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index 5bd90a7eb763..f0b5ff17d860 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -419,7 +419,7 @@ static void xics_set_affinity(unsigned int virq, cpumask_t cpumask)
* For the moment only implement delivery to all cpus or one cpu.
* Get current irq_server for the given irq
- irq_server = get_irq_server(irq, 1);
+ irq_server = get_irq_server(virq, 1);
if (irq_server == -1) {
char cpulist[128];
cpumask_scnprintf(cpulist, sizeof(cpulist), cpumask);