diff options
| author |   Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2010-10-04 13:43:27 -0400 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2010-10-18 10:49:29 -0400 |
| commit | 15ebbb82bac700db3c91e662fb70cb3559e9d930 (patch) | |
| tree | 9bb317f4dc9081eaef8d8170c7d55180eab4e5c1 /include | |
| parent | xen: Provide a variant of xen_poll_irq with timeout. (diff) | |
| download | linux-dev-15ebbb82bac700db3c91e662fb70cb3559e9d930.tar.xz linux-dev-15ebbb82bac700db3c91e662fb70cb3559e9d930.zip | |
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')
| -rw-r--r-- | include/xen/events.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/xen/events.h b/include/xen/events.h index 2532f8bd2401..d7a4ca7d17b5 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); |