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| author | Michael S. Tsirkin | 2009-11-25 11:24:14 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin | 2009-12-01 17:00:14 +0100 |
| commit | 98304c846d8866dae6322ef400ce6595b23cfc41 (patch) | |
| tree | 7526a2fb68d30d9f82143c35eab444770f835083 /hw/fw_cfg.c | |
| parent | msix: fix reset value for enable bit (diff) | |
| download | qemu-98304c846d8866dae6322ef400ce6595b23cfc41.tar.gz qemu-98304c846d8866dae6322ef400ce6595b23cfc41.tar.xz qemu-98304c846d8866dae6322ef400ce6595b23cfc41.zip | |
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>
Diffstat (limited to 'hw/fw_cfg.c')
0 files changed, 0 insertions, 0 deletions