On 8/15/23 02:48, Sean Christopherson wrote:
> ...
> Argh, apparently I didn't run these on AMD. The exception injection test hangs
> because the vCPU hits triple fault shutdown, and because the VMCB is technically
> undefined on shutdown, KVM synthesizes INIT. That starts the vCPU at the reset
> vector and it happily fetches zeroes util being killed.
Thank you for getting this. I should have mentioned, due to lack of access to
AMD hardware, I've only tested on Intel.
> @@ -115,6 +116,7 @@ static void *race_events_exc(void *arg)
> for (;;) {
> WRITE_ONCE(run->kvm_dirty_regs, KVM_SYNC_X86_EVENTS);
> WRITE_ONCE(events->flags, 0);
> + WRITE_ONCE(events->exception.nr, GP_VECTOR);
> WRITE_ONCE(events->exception.pending, 1);
> WRITE_ONCE(events->exception.nr, 255);
Here you're setting events->exception.nr twice. Is it deliberate?
Thanks again,
Michal
