https://bugzilla.kernel.org/show_bug.cgi?id=212859 Bug ID: 212859 Summary: Nested virtualization does not work well Product: Virtualization Version: unspecified Kernel Version: 4.19.188-amd64-cust1 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: kvm Assignee: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx Reporter: ne-vlezay80@xxxxxxxxx Regression: No Qemu version: 2.8.1 System: Devuan Ascii Problem: If you try to use nested virtualization and run linux or openbsd on it, then the system inside the nested virtual machine periodically freezes. If you watch strace, there are a lot of timeouts during the hangup. But, if you use a kernel from 5.10+ and qemu 5.20 on the host, then everything is fine. Nested virtualization works fine. Also run kernel 4.19.* on qemu, problem is not appers. Demonstration: https://youtu.be/mrMPukeTntQ -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
