On Fri, Mar 04, 2022, isaku.yamahata@xxxxxxxxx wrote: > From: Isaku Yamahata <isaku.yamahata@xxxxxxxxx> > > Wire up TDX PV HLT hypercall to the KVM backend function. > > When the guest issues HLT, the hypercall instruction can be the right after > CLI instruction. Atomically unmask virtual interrupt and issue HLT > hypercall. The virtual interrupts can arrive right after CLI instruction > before switching back to VMM. In such a case, the VMM should return to the > guest without losing the interrupt. Check if interrupts arrived before the > TDX module switching to VMM. And return to the guest in such cases. Pretty sure you mean STI, not CLI.
