** Changed in: linux (Ubuntu Jammy)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1965241
Title:
Ubuntu 22.04 and 20.04 DPC Fixes for Failure Cases of DownPort
Containment events
Status in dellserver:
New
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Jammy:
Fix Committed
Bug description:
SRU Justification:
[Impact]
Recovery from DownPort Containment events fail and the NVMe endpoint is not
accessible in some scenarios.
[Fix]
These are some of the DPC fixes which help in handling some of the
failure cases of DownPort Containment events.
Upstream kernel patches to be included into Ubuntu 22.04 and into
Ubuntu 20.04.5:
Already in Jammy as of Ubuntu-5.15.0-1.1
PCI/portdrv: Enable Bandwidth Notification only if port supports it
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.17-rc6&id=00823dcbdd415c868390feaca16f0265101efab4
PCI: pciehp: Ignore Link Down/Up caused by error-induced Hot Reset
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.17-rc6&id=ea401499e943c307e6d44af6c2b4e068643e7884
3134689f98 PCI/portdrv: Rename pm_iter() to pcie_port_device_iter()
[Test Case]
1. Disable the memory space of NVMe end point device
2. Issue IO to the device
3. Observe dmesg. dmesg shows that EDR event is generated, link is contained
and NVMe device is recovered.
2. Observe the dmesg
[Other Info]
https://code.launchpad.net/~mreed8855/ubuntu/+source/linux/+git/jammy/+ref/test_dpc_1965241
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