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    Subject[RFC PATCH v5 098/104] KVM: TDX: Handle TDX PV report fatal error hypercall
    Date
    From: Isaku Yamahata <isaku.yamahata@intel.com>

    Wire up TDX PV report fatal error hypercall to KVM_SYSTEM_EVENT_CRASH KVM
    exit event.

    Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
    ---
    arch/x86/kvm/vmx/tdx.c | 11 +++++++++++
    1 file changed, 11 insertions(+)

    diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c
    index 123d4322da99..4d668a6c7dc9 100644
    --- a/arch/x86/kvm/vmx/tdx.c
    +++ b/arch/x86/kvm/vmx/tdx.c
    @@ -1157,6 +1157,15 @@ static int tdx_emulate_wrmsr(struct kvm_vcpu *vcpu)
    return 1;
    }

    +static int tdx_report_fatal_error(struct kvm_vcpu *vcpu)
    +{
    + /* Exit to userspace device model for teardown. */
    + vcpu->run->exit_reason = KVM_EXIT_SYSTEM_EVENT;
    + vcpu->run->system_event.type = KVM_SYSTEM_EVENT_CRASH;
    + vcpu->run->system_event.flags = tdvmcall_p1_read(vcpu);
    + return 0;
    +}
    +
    static int handle_tdvmcall(struct kvm_vcpu *vcpu)
    {
    struct vcpu_tdx *tdx = to_tdx(vcpu);
    @@ -1180,6 +1189,8 @@ static int handle_tdvmcall(struct kvm_vcpu *vcpu)
    return tdx_emulate_rdmsr(vcpu);
    case EXIT_REASON_MSR_WRITE:
    return tdx_emulate_wrmsr(vcpu);
    + case TDG_VP_VMCALL_REPORT_FATAL_ERROR:
    + return tdx_report_fatal_error(vcpu);
    default:
    break;
    }
    --
    2.25.1
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