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    SubjectRe: [PATCH v10 010/108] KVM: TDX: Add TDX "architectural" error codes
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    On 2022/10/30 14:22, isaku.yamahata@intel.com wrote:
    > From: Sean Christopherson <sean.j.christopherson@intel.com>
    >
    > Add error codes for the TDX SEAMCALLs both for TDX VMM side for TDH
    > SEAMCALL and TDX guest side for TDG.VP.VMCALL. KVM issues the TDX
    > SEAMCALLs and checks its error code. KVM handles hypercall from the TDX
    > guest and may return an error. So error code for the TDX guest is also
    > needed.
    >
    > TDX SEAMCALL uses bits 31:0 to return more information, so these error
    > codes will only exactly match RAX[63:32]. Error codes for TDG.VP.VMCALL is
    > defined by TDX Guest-Host-Communication interface spec.
    >
    > Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
    > Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
    > Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
    > ---
    > arch/x86/kvm/vmx/tdx_errno.h | 38 ++++++++++++++++++++++++++++++++++++
    > 1 file changed, 38 insertions(+)
    > create mode 100644 arch/x86/kvm/vmx/tdx_errno.h
    >
    > diff --git a/arch/x86/kvm/vmx/tdx_errno.h b/arch/x86/kvm/vmx/tdx_errno.h
    > new file mode 100644
    > index 000000000000..ce246ba62454
    > --- /dev/null
    > +++ b/arch/x86/kvm/vmx/tdx_errno.h
    > @@ -0,0 +1,38 @@
    > +/* SPDX-License-Identifier: GPL-2.0 */
    > +/* architectural status code for SEAMCALL */
    > +
    > +#ifndef __KVM_X86_TDX_ERRNO_H
    > +#define __KVM_X86_TDX_ERRNO_H
    > +
    > +#define TDX_SEAMCALL_STATUS_MASK 0xFFFFFFFF00000000ULL
    > +
    > +/*
    > + * TDX SEAMCALL Status Codes (returned in RAX)
    > + */
    > +#define TDX_SUCCESS 0x0000000000000000ULL
    > +#define TDX_NON_RECOVERABLE_VCPU 0x4000000100000000ULL
    > +#define TDX_INTERRUPTED_RESUMABLE 0x8000000300000000ULL
    > +#define TDX_OPERAND_BUSY 0x8000020000000000ULL

    one minor format issue, spaces are used  instread of tabs this line.


    > +#define TDX_VCPU_NOT_ASSOCIATED 0x8000070200000000ULL
    > +#define TDX_KEY_GENERATION_FAILED 0x8000080000000000ULL
    > +#define TDX_KEY_STATE_INCORRECT 0xC000081100000000ULL
    > +#define TDX_KEY_CONFIGURED 0x0000081500000000ULL
    > +#define TDX_NO_HKID_READY_TO_WBCACHE 0x0000082100000000ULL
    > +#define TDX_EPT_WALK_FAILED 0xC0000B0000000000ULL
    > +
    > +/*
    > + * TDG.VP.VMCALL Status Codes (returned in R10)
    > + */
    > +#define TDG_VP_VMCALL_SUCCESS 0x0000000000000000ULL
    > +#define TDG_VP_VMCALL_RETRY 0x0000000000000001ULL
    > +#define TDG_VP_VMCALL_INVALID_OPERAND 0x8000000000000000ULL
    > +#define TDG_VP_VMCALL_TDREPORT_FAILED 0x8000000000000001ULL
    > +
    > +/*
    > + * TDX module operand ID, appears in 31:0 part of error code as
    > + * detail information
    > + */
    > +#define TDX_OPERAND_ID_RCX 0x01
    > +#define TDX_OPERAND_ID_SEPT 0x92
    > +
    > +#endif /* __KVM_X86_TDX_ERRNO_H */

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