** Changed in: linux (Ubuntu Mantic)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu Mantic)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/2055082
Title:
IB peer memory feature regressed in 6.5
Status in linux package in Ubuntu:
Won't Fix
Status in linux source package in Mantic:
Fix Committed
Bug description:
[Impact]
The GPU Direct over Infiniband feature of NVIDIA GPUs no longer works on
jammy/hwe kernels that have migrated to 6.5 *except* for the -nvidia kernel,
which pulled in support via bug 2049537.
We have carried this patch since 5.4 (see bug 1923104). We do not plan
to carry this patch into 6.8 or later - we are working on a
deprecation post for that to give users some time to migrate.
[Test Case]
https://git.launchpad.net/~canonical-kernel-team/+git/autotest-client-tests/tree/ubuntu_performance_gpudirect_rdma
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