On Fri, 2017-01-06 at 10:39 +1100, Gavin Shan wrote: > We give up recovery on permanent error, simply shutdown the affected > devices and remove them. If the devices can't be put into quiet state, > they spew more traffic that is likely to cause another unexpected EEH > error. This was observed on "p8dtu2u" machine: > > 0002:00:00.0 PCI bridge: IBM Device 03dc > 0002:01:00.0 Ethernet controller: Intel Corporation \ > Ethernet Controller X710/X557-AT 10GBASE-T (rev 02) > 0002:01:00.1 Ethernet controller: Intel Corporation \ > Ethernet Controller X710/X557-AT 10GBASE-T (rev 02) > 0002:01:00.2 Ethernet controller: Intel Corporation \ > Ethernet Controller X710/X557-AT 10GBASE-T (rev 02) > 0002:01:00.3 Ethernet controller: Intel Corporation \ > Ethernet Controller X710/X557-AT 10GBASE-T (rev 02) > > On P8 PowerNV platform, the IO path is frozen when shutdowning the > devices, meaning the memory registers are inaccessible. It is why > the devices can't be put into quiet state before removing them. > This fixes the issue by enabling IO path prior to putting the devices > into quiet state. > > Link: https://github.com/open-power/supermicro-openpower/issues/419 > Reported-by: Pridhiviraj Paidipeddi <ppaid...@linux.vnet.ibm.com> > Signed-off-by: Gavin Shan <gws...@linux.vnet.ibm.com> > ---
(forgot to ack this) Acked-by: Russell Currey <rus...@russell.cc>
