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authorThomas Falcon <tlfalcon@linux.vnet.ibm.com>2018-04-15 18:53:36 -0500
committerDavid S. Miller <davem@davemloft.net>2018-04-16 11:26:14 -0400
commitf23e0643cd0b53e68e283b6f26194d56c28a2eb1 (patch)
treed554a04ec1e70dda2e9c58eac8d5a7239e93f56e /scripts/makelst
parentbffd168c3fc5cc7d2bad4c668fa90e7a9010db4b (diff)
ibmvnic: Clear pending interrupt after device reset
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 <tlfalcon@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'scripts/makelst')
0 files changed, 0 insertions, 0 deletions