Messages in this thread | | | Date | Mon, 1 Apr 2024 17:59:35 +0800 | From | Chao Gao <> | Subject | Re: [PATCH v19 104/130] KVM: TDX: Add a place holder for handler of TDX hypercalls (TDG.VP.VMCALL) |
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> static inline bool is_td_vcpu_created(struct vcpu_tdx *tdx) > { > return tdx->td_vcpu_created; >@@ -897,6 +932,11 @@ fastpath_t tdx_vcpu_run(struct kvm_vcpu *vcpu) > > tdx_complete_interrupts(vcpu); > >+ if (tdx->exit_reason.basic == EXIT_REASON_TDCALL) >+ tdx->tdvmcall.rcx = vcpu->arch.regs[VCPU_REGS_RCX];
kvm_rcx_read()?
>+ else >+ tdx->tdvmcall.rcx = 0;
RCX on TDVMCALL exit is supposed to be consumed by TDX module. I don't get why caching it is necessary. Can tdx->tdvmcall be simply dropped?
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