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x86/virt/tdx: Move TDX_FEATURES0 bits to asm/tdx.h

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Future changes will add support for new TDX features exposed as
TDX_FEATURES0 bits. The presence of these features will need to be
checked outside of arch/x86/virt. The feature query helpers and
the TDX_FEATURES0 defines they reference will need to live in the
widely accessible asm/tdx.h header. Move the existing TDX_FEATURES0 to
asm/tdx.h so that they can all be kept together.

Opportunistically switch to BIT_ULL() since TDX_FEATURES0 is 64-bit.

No functional change intended.

[ dhansen: grammar fixups ]

Signed-off-by: Chao Gao <chao.gao@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/kvm/20260427152854.101171-17-chao.gao@intel.com/ # [1]
Link: https://lore.kernel.org/kvm/20251121005125.417831-16-rick.p.edgecombe@intel.com/ # [2]
Link: https://patch.msgid.link/20260520133909.409394-5-chao.gao@intel.com
This commit is contained in:
Chao Gao 2026-05-20 15:28:49 -07:00 committed by Dave Hansen
parent 451735bf90
commit 77525820de
2 changed files with 3 additions and 3 deletions
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3
arch/x86/include/asm/tdx.h
View File

@ -32,6 +32,9 @@
#define TDX_SUCCESS 0ULL
#define TDX_RND_NO_ENTROPY 0x8000020300000000ULL
/* Bit definitions of TDX_FEATURES0 metadata field */
#define TDX_FEATURES0_NO_RBP_MOD BIT_ULL(18)
#ifndef __ASSEMBLER__
#include <uapi/asm/mce.h>

3
arch/x86/virt/vmx/tdx/tdx.h
View File

@ -85,9 +85,6 @@ struct tdmr_info {
DECLARE_FLEX_ARRAY(struct tdmr_reserved_area, reserved_areas);
} __packed __aligned(TDMR_INFO_ALIGNMENT);
/* Bit definitions of TDX_FEATURES0 metadata field */
#define TDX_FEATURES0_NO_RBP_MOD BIT(18)
/*
* Do not put any hardware-defined TDX structure representations below
* this comment!