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authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2010-10-04 13:43:27 -0400
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2010-10-18 10:49:29 -0400
commit15ebbb82bac700db3c91e662fb70cb3559e9d930 (patch)
tree9bb317f4dc9081eaef8d8170c7d55180eab4e5c1 /include/xen
parentd9a8814f27080cec6126fca3ef0c210d9f56181e (diff)
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xen: fix shared irq device passthrough
In driver/xen/events.c, whether bind_pirq is shareable or not is determined by desc->action is NULL or not. But in __setup_irq, startup(irq) is invoked before desc->action is assigned with new action. So desc->action in startup_irq is always NULL, and bind_pirq is always not shareable. This results in pt_irq_create_bind failure when passthrough a device which shares irq to other devices. This patch doesn't use probing_irq to determine if pirq is shareable or not, instead set shareable flag in irq_info according to trigger mode in xen_allocate_pirq. Set level triggered interrupts shareable. Thus use this flag to set bind_pirq flag accordingly. [v2: arch/x86/xen/pci.c no more, so file skipped] Signed-off-by: Weidong Han <weidong.han@intel.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'include/xen')
-rw-r--r--include/xen/events.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/xen/events.h b/include/xen/events.h
index 2532f8bd240..d7a4ca7d17b 100644
--- a/include/xen/events.h
+++ b/include/xen/events.h
@@ -70,7 +70,7 @@ void xen_hvm_evtchn_do_upcall(void);
/* Allocate an irq for a physical interrupt, given a gsi. "Legacy"
* GSIs are identity mapped; others are dynamically allocated as
* usual. */
-int xen_allocate_pirq(unsigned gsi, char *name);
+int xen_allocate_pirq(unsigned gsi, int shareable, char *name);
/* Return vector allocated to pirq */
int xen_vector_from_irq(unsigned pirq);