https://bugzilla.kernel.org/show_bug.cgi?id=206579 --- Comment #49 from Anthony (anthonysanwo@xxxxxxxxxxxxxx) --- Just wanted to share my experience also with trying to replicate muncrief's issue. So far I haven't had any luck reproducing the issue with my config either using a Windows 10/Linux Guest. Suravee Suthikulpanit just a quick question. Since my previous comment I have gotten some better understanding and found ways to tell for sure AVIC is working. On that note in Windows I can't seem to get IOMMU AVIC working testing different configurations but SVM AVIC works great. Using perf kvm --host top -p `pidof qemu-system-x86_64` On Linux - 0.12% [kvm_amd] [k] avic_vcpu_put.part.0 0.10% [kvm_amd] [k] avic_vcpu_load 0.02% [kvm_amd] [k] avic_incomplete_ipi_interception 0.01% [kvm_amd] [k] svm_deliver_avic_intr 2.83% [kernel] [k] iommu_completion_wait 0.87% [kernel] [k] __iommu_queue_command_sync 0.16% [kernel] [k] amd_iommu_update_ga 0.03% [kernel] [k] iommu_flush_irt -- You are receiving this mail because: You are watching the assignee of the bug.
