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xen: implement xen_hvm_register_pirq

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xen_hvm_register_pirq allows the kernel to map a GSI into a Xen pirq and
receive the interrupt as an event channel from that point on.

Signed-off-by: Stefano Stabellini <[email protected]>
Reviewed-by: Konrad Rzeszutek Wilk <[email protected]>
This commit is contained in:
Stefano Stabellini 2010-06-24 16:42:04 +01:00
commit 42a1de56f3
3 changed files with 71 additions and 1 deletions
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4
drivers/xen/events.c
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@ -36,6 +36,7 @@
#include <asm/idle.h>
#include <asm/io_apic.h>
#include <asm/sync_bitops.h>
#include <asm/xen/pci.h>
#include <asm/xen/hypercall.h>
#include <asm/xen/hypervisor.h>
@ -75,7 +76,8 @@ enum xen_irq_type {
* event channel - irq->event channel mapping
* cpu - cpu this event channel is bound to
* index - type-specific information:
* PIRQ - vector, with MSB being "needs EIO"
* PIRQ - vector, with MSB being "needs EIO", or physical IRQ of the HVM
* guest, or GSI (real passthrough IRQ) of the device.
* VIRQ - virq number
* IPI - IPI vector
* EVTCHN -