On Thu, Feb 27, 2020 at 06:19:10PM +0000, Robin Murphy wrote: > On 27/02/2020 1:48 pm, Russell King - ARM Linux admin wrote: > > On Thu, Feb 27, 2020 at 01:44:56PM +0000, Robin Murphy wrote: > > > On 27/02/2020 11:57 am, Russell King wrote: > > > > On the LX2160A, there are lots (about 160) of IOMMU messages produced > > > > during boot; this is excessive. Reduce the severity of these messages > > > > to debug level. > > > > > > That's... a lot. Does the system really have that many devices, or is some > > > driver being stupid and repeatedly populating and destroying an entire bus > > > in a probe-deferral dance? > > > > It's all the devices created by for the mc-bus for the DPAA2 > > networking support. I don't know the technicalities, just that > > the boot is spammed with these messages. > > Well, the "technicalities" are really just whether the thing before the > colon on each message is unique or not. If you're seeing multiple add and > remove calls pertaining to the same device (or frankly any remove calls at > all during boot) then it smacks of something somewhere wasting time and > resources with unnecessary busywork, which is indicative of either poor > design or an actual bug, either of which would deserve fixing.
It's not the same device. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up According to speedtest.net: 11.9Mbps down 500kbps up _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
