On Wed, Jun 12, 2024 at 11:10:22AM -0700, Keith Busch wrote: > From: Keith Busch <kbusch@xxxxxxxxxx> > > I am working with larger pcie topologies again, and we're seeing some > failures when dealing with certain overlapping pcie events. > > The topology is essentially this: > > [Root Port] <-> [UpStream Port] <-> [DownStream Port] <-> [End Device] > > An error between the DSP and ED triggers DPC. There's only inband > presence detection so it also triggers hotplug. Before the error > handling is completed, though, another error seen by the RP triggers its > own DPC handling. > > The concurrent event handling reveals some interesting races, and this > small patchset tries to address these in the low invasive way. > > Keith Busch (2): > PCI: pciehp: fix concurrent sub-tree removal deadlock > PCI: err: ensure stable topology during handling Oops, sorry for the noise here. I accidently pointed git send-email to the wrong directory and resent v1 that was already flagged as breaking. I'll resend the correct version shortly.
