Hi, This came up in the context of a customer issue. I have asked them if we can share anonymised data here, and I will pass on any response.
>From my analysis of the code while working the case, it would seem that you could reproduce this by spinning up and tearing down VMs of varying memory sizes in order to fragment the CMA. It looks like PCI pass- through would exacerbate the issue, although I don't believe this was a factor in this instance. I wonder if this is fully 'solvable' per se - with memory overcommit it should be easy to simply run out of CMA space - but it should be possible to at least print much more helpful information either from the kernel or from qemu. Regards, Daniel -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1781038 Title: KVM guest hash page table failed to allocate contiguous memory (CMA) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1781038/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
