On Sat, Jan 28, 2023, Sean Christopherson wrote: > > + * If the L2 doesn't intercept interrupts, then > > + * (even if the L2 does use virtual interrupt masking), > > KVM uses "L2" to refer to the thing running at L2. I think what you are referring > to here is vmcb12? And that's controlled by L1. > > > + * KVM will use the vmcb02's V_INTR to detect interrupt window. > > s/the vmcb02/vmcb02 > > Which of the V_INTR fields does this refer to? Oooh, you're saying the KVM injects > a virtual interrupt into L2 using vmcb02 in order to determine when L2 has IRQs > enabled. > > Why does KVM do that? Why not pend the actual IRQ directly? Duh, because KVM needs to gain control in if there are multiple pending events.
