On 21/05/20 14:50, Vitaly Kuznetsov wrote: > Sorry for reporting this late but I just found out that this commit > breaks Hyper-V 2016 on KVM on SVM completely (always hangs on boot). I > haven't investigated it yet (well, this is Windows, you know...) but > what's usually different about Hyper-V is that unlike KVM/Linux it has > handlers for some hardware interrupts in the guest and not in the > hypervisor. "Always hangs on boot" is easy. :) At this point I think it's easiest to debug it on top of the whole pending SVM patches that remove exit_required completely (and exit_required is not coming back anyway). Can you get a trace and send it to me? Paolo
