On Wed, 19 Oct 2016 11:46:21 -0500 Kevin Vasko <kva...@gmail.com> wrote:
> Alex, > > Thanks, but no luck. > > I ran : > > #:setpci -s 3:00.0 82.w=8:8 > > checked > > #:lspci -vvvs 3:00.0 > > MRL- was the same. PresDet+ on the Changed: line was the thing we were looking for. MRL is a retention latch specifically for hotplug capable slots. > #: setpci -s 3:00.0 78.w=20:20 > > checked: > > #: lspci -vvs 3:00.0 > > MRL- was the same > > > LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk- DLActive- BWMgmt- > ABWMgmt- > > SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ Interlock- > Changed: MRL- PresDet+ LinkState- > > Just for my own knowledge what does "retrain" mean? I assume resetting the > bus and it reconnecting successfully? Retraining triggers a re-sync of the link width and speed parameters, think of it like kicking an Ethernet connection to renegotiate 10/100/1000Mbps speeds, a similar thing happens between a device and the downstream port that it's connected to to determine the link parameters. Thanks, Alex _______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
