Re: [PATCH v2 1/5] x86/tdx: Move all TDX error defines into <asm/shared/tdx_errno.h>

[Chao Gao <chao.gao@intel.com>]

On Mon, Mar 23, 2026 at 02:59:04PM -0600, Vishal Verma wrote:
>From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
>
>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 and prepare to introduce some helpers for these error codes in
>the central place by unifying them. Join them 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.
>
>Also, adjust BITUL() -> _BITULL() to address 32 bit build errors after the
>move.
>
>Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
>[enhance log]
>Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
>Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>

Reviewed-by: Chao Gao <chao.gao@intel.com>