K 10
svn:author
V 3
wma
K 8
svn:date
V 27
2018-01-23T08:07:00.465012Z
K 7
svn:log
V 461
PowerNV: send MSI_EOI always after MSI unmask

MSI/MSI-x interrupts are edge-triggered. If an interrupt
arrives when IRQ line is masked, it will be lost and will
never recover. Perform MSI_EOI always after unmask to give
a chance for PHB/XICS to send an interrupt again if MSI/MSI-x
pending bit is set in MSI/MSI-x BAR space.

Submitted by:          Wojciech Macek <wma@semihalf.org>
Obtained from:         Semihalf
Sponsored by:          IBM, QCM Technologies

END