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ixgbef
2013 Sep 04
18
[PATCH v8] interrupts: allow guest to set/clear MSI-X mask bit
Guest needs the ability to enable and disable MSI-X interrupts
by setting the MSI-X control bit, for a passed-through device.
Guest is allowed to write MSI-X mask bit only if Xen *thinks*
that mask is clear (interrupts enabled). If the mask is set by
Xen (interrupts disabled), writes to mask bit by the guest is
ignored.
Currently, a write to MSI-X mask bit by the guest is silently
ignored.
A