From: Stefano Stabellini Date: Wed, 1 Dec 2010 14:51:44 +0000 (+0000) Subject: xen: use PHYSDEVOP_get_free_pirq to implement find_unbound_pirq X-Git-Tag: v2.6.37-rc5~9^2~4 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e5fc7345412d5e4758fcef55a74354c5cbefd61e;p=pandora-kernel.git xen: use PHYSDEVOP_get_free_pirq to implement find_unbound_pirq 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 --- Reading git-diff-tree failed