Re: [RFC PATCH v5 092/104] KVM: TDX: Handle TDX PV HLT hypercall

[Isaku Yamahata]

On Thu, Apr 07, 2022 at 05:56:05PM +0200,
Paolo Bonzini <pbonzini@xxxxxxxxxx> 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@xxxxxxxxx>