Messages in this thread | | | Date | Thu, 7 Apr 2022 21:58:42 -0700 | From | Isaku Yamahata <> | Subject | Re: [RFC PATCH v5 092/104] KVM: TDX: Handle TDX PV HLT hypercall |
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On Thu, Apr 07, 2022 at 05:56:05PM +0200, Paolo Bonzini <pbonzini@redhat.com> wrote:
> You didn't answer the other question, which is "Where is R12 documented for > TDG.VP.VMCALL<Instruction.HLT>?" though... Should I be worried? :)
It's publicly documented.
Guest-Host-Communication Interface(GHCI) spec, 344426-003US Feburary 2022. 3.8 TDG.VP.VMCALL<Instruction.HLT> R12 Interrupt Blocked Flag. The TD is expected to clear this flag iff RFLAGS.IF == 1 or the TDCALL instruction (that invoked TDG.VP.TDVMCALL(Instruction.HLT)) immediately follows an STI instruction, otherwise this flag should be set.
-- Isaku Yamahata <isaku.yamahata@gmail.com>
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