From: Thomas Falcon <tlfal...@linux.vnet.ibm.com> Date: Sun, 15 Apr 2018 18:53:36 -0500
> Due to a firmware bug, the hypervisor can send an interrupt to a > transmit or receive queue just prior to a partition migration, not > allowing the device enough time to handle it and send an EOI. When > the partition migrates, the interrupt is lost but an "EOI-pending" > flag for the interrupt line is still set in firmware. No further > interrupts will be sent until that flag is cleared, effectively > freezing that queue. To workaround this, the driver will disable the > hardware interrupt and send an H_EOI signal prior to re-enabling it. > This will flush the pending EOI and allow the driver to continue > operation. > > Signed-off-by: Thomas Falcon <tlfal...@linux.vnet.ibm.com> Hey Thomas, I see two copies of this patch posted. Any special reason for that? Thanks.