https://bugzilla.kernel.org/show_bug.cgi?id=206579 --- Comment #31 from Suravee Suthikulpanit (suravee.suthikulpanit@xxxxxxx) --- (In reply to muncrief from comment #27) > Created attachment 287667 [details] > avic_inhibit_reasons debug information Thanks for the info > With host-passthrough the avic_inhibit_reasons value immediately changed > from 0 to 20, and then a few seconds later changed to 28. > > With the EPYC-IBPB the avic_inhibit_reasons value immediately changed from 0 > to 16, and then a few seconds later changed to 24. 24 means: APICV_INHIBIT_REASON_IRQWIN APICV_INHIBIT_REASON_PIT_REINJ Looking at the QEMU command line, you might need to either: 1. Specify "-machine kernel_irqchip=split" (default to "on") Or 2. Specify "-global kvm-pit.lost_tick_policy=discard" (default to "delay") Please give this a try. Suravee -- You are receiving this mail because: You are watching the assignee of the bug.
