Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e48395f1753cab0fde6c03f1db833cece9ef2ba0
Commit: e48395f1753cab0fde6c03f1db833cece9ef2ba0
Parent: 75723957673bfa10c98b735259f891cc79cf0450
Author: Anton Blanchard <[EMAIL PROTECTED]>
AuthorDate: Mon Oct 1 07:45:55 2007 +1000
Committer: Paul Mackerras <[EMAIL PROTECTED]>
CommitDate: Tue Oct 2 11:48:14 2007 +1000
[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 <[EMAIL PROTECTED]>
Signed-off-by: Paul Mackerras <[EMAIL PROTECTED]>
---
arch/powerpc/platforms/pseries/xics.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/xics.c
b/arch/powerpc/platforms/pseries/xics.c
index 5bd90a7..f0b5ff1 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);
-
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