** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1834522
Title:
Bionic QEMU with Bionic Kernel hangs in AMD FX-8350 with cpu-host as
passthrough
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Bionic:
Fix Committed
Bug description:
[Impact]
* Nested AMD KVM guest does not work in AMD CPUs when using host-passthrough
as cpu-mode.
* QEMU does not start, hanging before the VM initialization.
[Test Case]
* Bionic KVM GUEST tries to use nested KVM in AMD CPU
* to use the following XML file: https://paste.ubuntu.com/p/BSyFY7ksR5/
* to have AMD FX(tm)-8350 Eight-Core Processor CPU or similar
* to use Xenial qemu on top of a HWE kernel -> works
[Regression Potential]
* KVM SVM could be affected but patch is from upstream, fixes the
specific issue and has been tested by me in my currently developing
workstation (heavy usage).
[Other Info]
* Patches have been sent to kernel team mailing list.
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