Re: [RFC PATCH 04/27] x86/virt/tdx: Move tdx_errno.h from KVM to public place

["Huang, Kai" <kai.huang@intel.com>]

On Fri, 2025-09-19 at 07:22 -0700, Dan Williams wrote:
> From: Xu Yilun <yilun.xu@linux.intel.com>
> 
> Move these TDX Module defined error code from KVM to public place.
> 
> SEAMCALL helpers (defined in TDX core, tdh_*()) returns these error code
> to kernel users. It is reasonable to also public the definitions of each
> error code. TDX core itself will use these error code when enabling
> optional features (e.g. TDX Module extensions). TDX Connect will also use
> them in tdx-host module.
> 
> Signed-off-by: Xu Yilun <yilun.xu@linux.intel.com>
> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
> ---
>  arch/x86/include/asm/tdx.h                    | 1 +
>  arch/x86/{kvm/vmx => include/asm}/tdx_errno.h | 6 +++---
>  arch/x86/kvm/vmx/tdx.h                        | 1 -
>  3 files changed, 4 insertions(+), 4 deletions(-)
>  rename arch/x86/{kvm/vmx => include/asm}/tdx_errno.h (93%)
> 

<asm/tdx.h> has below:

/*                                                                    
 * TDX module SEAMCALL leaf function error codes
 */
#define TDX_SUCCESS             0ULL                            
#define TDX_RND_NO_ENTROPY      0x8000020300000000ULL

Perhaps take this chance to move these two into <asm/tdx_errno.h> too?

Btw, Rick is trying to do similar thing in his dynamic PAMT series:

https://lore.kernel.org/kvm/20250918232224.2202592-2-rick.p.edgecombe@intel.com/