** Also affects: linux-azure (Ubuntu Cosmic)
Importance: Undecided
Status: New
** Also affects: linux-azure (Ubuntu Bionic)
Importance: Undecided
Status: New
** No longer affects: linux-azure (Ubuntu Bionic)
** Also affects: linux-azure (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux-azure (Ubuntu Xenial)
Status: New => Fix Released
** Changed in: linux-azure (Ubuntu Cosmic)
Status: New => Fix Released
** Changed in: linux-azure (Ubuntu Xenial)
Assignee: (unassigned) => Marcelo Cerri (mhcerri)
** Changed in: linux-azure (Ubuntu Cosmic)
Assignee: (unassigned) => Marcelo Cerri (mhcerri)
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-azure in Ubuntu.
https://bugs.launchpad.net/bugs/1816106
Title:
4.15.0-1037 does not see all PCI devices on GPU VMs
Status in linux-azure package in Ubuntu:
Fix Released
Status in linux-azure source package in Xenial:
Fix Released
Status in linux-azure source package in Cosmic:
Fix Released
Bug description:
Host changes have altered how the PCI GUID is presented to the guest
and the patches for PCI IDs in 4.15.0-1037 do not properly handle the
new condition.
Impact:
Instances with multiple GPUs are only seeing one.
Workaround:
4.15.0-1036 does not have this behavior.
Additional info:
The commit in 4.15.0-1037 responsible is " - PCI: hv: Make sure the
bus domain is really unique"
The immediate action requested is to back out this patch on 4.15.0 (azure):
https://git.launchpad.net/~canonical-kernel/ubuntu/+source/linux-azure/commit/?h=master-next&id=b9ae54076a78d01659c4d0f0a558cdb4056f0d13
The same thing on 4.18:
https://git.launchpad.net/~canonical-kernel/ubuntu/+source/linux-azure/commit/?h=azure-edge-next&id=29927dfb7f69bcf2ae7fd1cda10997e646a5189c
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1816106/+subscriptions
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