RE: [PATCH v3 0/6] pci-hyper: Fix race condition bugs for fast device hotplug

From: Dexuan Cui
Sent: Thursday, April 20, 2023 7:04 PM

quoted

...

Dexuan Cui (6):
  PCI: hv: Fix a race condition bug in hv_pci_query_relations()
  PCI: hv: Fix a race condition in hv_irq_unmask() that can cause panic
  PCI: hv: Remove the useless hv_pcichild_state from struct hv_pci_dev
  Revert "PCI: hv: Fix a timing issue which causes kdump to fail
    occasionally"
  PCI: hv: Add a per-bus mutex state_lock
  PCI: hv: Use async probing to reduce boot time

 drivers/pci/controller/pci-hyperv.c | 145 +++++++++++++++++-----------
 1 file changed, 86 insertions(+), 59 deletions(-)

Hi Bjorn, Lorenzo, since basically this patchset is Hyper-V stuff, I would
like it to go through the hyper-v tree if you have no objection.

The hyper-v tree already has one big PCI patch from Michael:
https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git/commit/?h=
hyperv-next&id=2c6ba4216844ca7918289b49ed5f3f7138ee2402

Thanks,
Dexuan

Hi Lorenzo, thanks for Ack'ing the patch:
  Re: [PATCH v2] PCI: hv: Replace retarget_msi_interrupt_params with hyperv_pcpu_input_arg

It would be great if you and/or Bjorn can Ack this patchset as well :-)

v1 of this patchset was posted on 3/28:
https://lwn.net/ml/linux-kernel/20230328045122.25850-1-decui%40microsoft.com/
and v3 got Michael Kelley's and Long Li's Reviewed-by.

I have done a long-haul testing against the patchset and it worked
reliably without causing any issue: without the patchset, usually the VM
can crash within 1~2 days; with the patchset, the VM is still running fine 
after 2 weeks.

Thanks,
Dexuan