https://bugzilla.kernel.org/show_bug.cgi?id=206579 --- Comment #60 from Anthony (anthonysanwo@xxxxxxxxxxxxxx) --- To add hiding cpu id hypervisor seems to also cause it to not work well. Windows also generally don't perform as well when hiding the hypervisor CPU id on Ryzen. Using top we see high activity in avic_vcpu_put.part.0 & avic_vcpu_load functions and near-zero to zero activity with svm_deliver_avic_intr function. Which suggests AVIC isn't working correctly if my sight understanding of svm_deliver_avic_intr function is correct. Haven't looked to in-depth but I would guess SVM/AVIC uses hypervisor cpuid as check? to apply its optimizations or something along those lines. -- You are receiving this mail because: You are watching the assignee of the bug.
