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authorStefano Stabellini <stefano.stabellini@eu.citrix.com>2012-04-25 16:11:38 +0100
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-04-26 18:02:02 -0400
commit521394e4e679996955bc351cb6b64639751db2ff (patch)
treebb34ba562e347340af2197947859dddbafd6e771 /drivers/xen
parentdf88b2d96e36d9a9e325bfcd12eb45671cbbc937 (diff)
downloadlinux-linaro-stable-521394e4e679996955bc351cb6b64639751db2ff.tar.gz
xen: use the pirq number to check the pirq_eoi_map
In pirq_check_eoi_map use the pirq number rather than the Linux irq number to check whether an eoi is needed in the pirq_eoi_map. The reason is that the irq number is not always identical to the pirq number so if we wrongly use the irq number to check the pirq_eoi_map we are going to check for the wrong pirq to EOI. As a consequence some interrupts might not be EOI'ed by the guest correctly. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Tested-by: Tobias Geiger <tobias.geiger@vido.info> [v1: Added some extra wording to git commit] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/events.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 4b33acd8ed4e..0a8a17cd80be 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -274,7 +274,7 @@ static unsigned int cpu_from_evtchn(unsigned int evtchn)
static bool pirq_check_eoi_map(unsigned irq)
{
- return test_bit(irq, pirq_eoi_map);
+ return test_bit(pirq_from_irq(irq), pirq_eoi_map);
}
static bool pirq_needs_eoi_flag(unsigned irq)