https://github.com/torvalds/linux
Revision e5fc7345412d5e4758fcef55a74354c5cbefd61e authored by Stefano Stabellini on 01 December 2010, 14:51:44 UTC, committed by Stefano Stabellini on 02 December 2010, 14:28:22 UTC
Use the new hypercall PHYSDEVOP_get_free_pirq to ask Xen to allocate a
pirq. Remove the unsupported PHYSDEVOP_get_nr_pirqs hypercall to get the
amount of pirq available.

This fixes find_unbound_pirq that otherwise would return a number
starting from nr_irqs that might very well be out of range in Xen.

The symptom of this bug is that when you passthrough an MSI capable pci
device to a PV on HVM guest, Linux would fail to enable MSIs on the
device.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
1 parent e8a7e48
History
Tip revision: e5fc7345412d5e4758fcef55a74354c5cbefd61e authored by Stefano Stabellini on 01 December 2010, 14:51:44 UTC
xen: use PHYSDEVOP_get_free_pirq to implement find_unbound_pirq
Tip revision: e5fc734

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