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x86/tdx: Move TDX architectural error codes into <asm/shared/tdx_errno.h>

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Today there are two separate locations where TDX error codes are defined:

  arch/x86/include/asm/tdx.h
  arch/x86/kvm/vmx/tdx_errno.h

They have some overlap that is already defined similarly. Reduce the
duplication by unifying the architectural error codes at:

  asm/shared/tdx_errno.h

...and update the headers that contained the duplicated definitions to
include the new unified header.

"asm/shared" is used for sharing TDX code between the early compressed
code and the normal kernel code. While the compressed code for the guest
doesn't use these error code header definitions today, it does make the
types of calls that return the values they define. So place the defines in
"shared" location so that it can, but leave such cleanups for future
changes.

[Rick: enhance log]
[Vishal: reduce to a simple move of architectural defines only]

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Chao Gao <chao.gao@intel.com>
Acked-by: Sean Christopherson <seanjc@google.com>
Link: https://patch.msgid.link/20260402-fuller_tdx_kexec_support-v3-1-34438d7094bf@intel.com
This commit is contained in:
Kirill A. Shutemov 2026-04-02 00:32:01 -06:00 committed by Dave Hansen
parent 254f49634e
commit 5364271586
3 changed files with 4 additions and 5 deletions
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1
arch/x86/include/asm/shared/tdx.h
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@ -4,6 +4,7 @@
#include <linux/bits.h>
#include <linux/types.h>
#include <asm/shared/tdx_errno.h>
#define TDX_HYPERCALL_STANDARD 0

7
arch/x86/kvm/vmx/tdx_errno.h → arch/x86/include/asm/shared/tdx_errno.h
View File

@ -1,8 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* architectural status code for SEAMCALL */
#ifndef __KVM_X86_TDX_ERRNO_H
#define __KVM_X86_TDX_ERRNO_H
#ifndef _ASM_X86_SHARED_TDX_ERRNO_H
#define _ASM_X86_SHARED_TDX_ERRNO_H
#define TDX_SEAMCALL_STATUS_MASK 0xFFFFFFFF00000000ULL
@ -37,4 +36,4 @@
#define TDX_OPERAND_ID_SEPT 0x92
#define TDX_OPERAND_ID_TD_EPOCH 0xa9
#endif /* __KVM_X86_TDX_ERRNO_H */
#endif /* _ASM_X86_SHARED_TDX_ERRNO_H */

1
arch/x86/kvm/vmx/tdx.h
View File

@ -3,7 +3,6 @@
#define __KVM_X86_VMX_TDX_H
#include "tdx_arch.h"
#include "tdx_errno.h"
#ifdef CONFIG_KVM_INTEL_TDX
#include "common.h"