https://bugzilla.kernel.org/show_bug.cgi?id=219112 Sean Christopherson (seanjc@xxxxxxxxxx) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |seanjc@xxxxxxxxxx --- Comment #5 from Sean Christopherson (seanjc@xxxxxxxxxx) --- Heh, that was quite the rabbit hole. Poking around reminded me of a bug report from Tejun about KVM worker threads not freezing in certain scenarios[*]. Long explanation very short, can you try setting KVM's "nx_huge_pages" module param to "never"? E.g. via echo "never" | sudo tee /sys/module/kvm/parameters/nx_huge_pages Note, the module param is writable even while KVM is loaded, but it needs to be set to "never' _before_ launching any VMs, in which case KVM won't spawn the associated worker thread. I.e. the "never" setting only affects worker threads for new VMs. AFAIK, that's the only problematic flavor of worker thread in KVM. If that makes the suspend/resume problem go away, then odds are very good the underlying issue is the same one Tejun reported. [*] https://lore.kernel.org/all/ZyAnSAw34jwWicJl@xxxxxxxxxxxxxxx -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
