| commit | 98304c846d8866dae6322ef400ce6595b23cfc41 | |
| author | Michael S. Tsirkin <mst@redhat.com> | |
| Wed, 25 Nov 2009 10:24:14 +0000 (25 12:24 +0200) | ||
| committer | Michael S. Tsirkin <mst@redhat.com> | |
| Tue, 1 Dec 2009 16:00:14 +0000 (1 18:00 +0200) | ||
| tree | 7526a2fb68d30d9f82143c35eab444770f835083 | treesnapshot (tar.gz zip) |
| parent | 1f944c661a821774e7b8cfbf5560a238795f2a60 | commitdiff |
msix: clear pending bit of an unused vector
PCI spec states:
if a masked vector has its Pending bit set, and the associated
underlying interrupt events are somehow satisfied (usually by software
though the exact manner is function-specific), the function must clear
the Pending bit, to avoid sending a spurious interrupt message later
when software unmasks the vector.
In our case this happens if vector becomes unused.
Clear pending bit in this case.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
PCI spec states:
if a masked vector has its Pending bit set, and the associated
underlying interrupt events are somehow satisfied (usually by software
though the exact manner is function-specific), the function must clear
the Pending bit, to avoid sending a spurious interrupt message later
when software unmasks the vector.
In our case this happens if vector becomes unused.
Clear pending bit in this case.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| hw/msix.c | diffblobblamehistory |