Ubuntu
linux-hwe-5.15 package

  1. Bug #2024500
  2. Comment #0

Comment 0 for bug 2024500

Revision history for this message
mloza1 (mloza1) wrote : KVM: after upgrading the kernel to 5.15.0-75, Guest hangs after migration.

I have weird situation when I am live migrating a VM between two nodes, the VM hangs after migrating from EPYC3(Milan) to EPYC1(Naples) nodes.

First node:

CPU(s) AMD EPYC 7713 64-Core Processor (2 Sockets)
Linux compute81 5.15.0-75-generic #82~20.04.1-Ubuntu SMP Wed Jun 7 19:37:37 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

Second node:

CPU(s) AMD EPYC 7401 24-Core Processor (2 Sockets)
Linux compute37 5.15.0-75-generic #82~20.04.1-Ubuntu SMP Wed Jun 7 19:37:37 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

When I am migrating from second type node to first type - everything works.
When I am migrating from first type to second type - VM freezes

No issue using the following kernels:

5.15.99 from upstream
linux-image-5.15.0-25-generic_5.15.0-25.25_amd64