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

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/
Link: https://lore.kernel.org/kvm/20251121005125.417831-16-rick.p.edgecombe@intel.com/
Link: https://patch.msgid.link/20260520133909.409394-5-chao.gao@intel.com

diff --git a/arch/x86/include/asm/tdx.h b/arch/x86/include/asm/tdx.h
index 15eac89b0afbedaf38bff52e8c2ba49ea9f65aea..e2430dd0e4d58520ffcfea25fe9ef23a2d72f0f2 100644 (file)
--- a/arch/x86/include/asm/tdx.h
+++ b/arch/x86/include/asm/tdx.h
@@ -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>

diff --git a/arch/x86/virt/vmx/tdx/tdx.h b/arch/x86/virt/vmx/tdx/tdx.h
index e2cf2dd4875546eb06477fd9c32ee6bba52518cd..76c5fb1e1ffe62537c837adeb63e3e65ed7b8ca2 100644 (file)
--- a/arch/x86/virt/vmx/tdx/tdx.h
+++ b/arch/x86/virt/vmx/tdx/tdx.h
@@ -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!