diff options
| author | Chao Gao <chao.gao@intel.com> | 2026-05-20 15:29:13 -0700 |
|---|---|---|
| committer | Dave Hansen <dave.hansen@linux.intel.com> | 2026-06-03 08:59:44 -0700 |
| commit | 1e35f5945db9630c0602d9a9a7bbd146a96d13cc (patch) | |
| tree | 29a3587ccd3d5626b166dc113179be56fe69f7ed | |
| parent | 856bc8bb990e21546fadff83502cdad33660a18e (diff) | |
| download | linux-1e35f5945db9630c0602d9a9a7bbd146a96d13cc.tar.gz linux-1e35f5945db9630c0602d9a9a7bbd146a96d13cc.zip | |
x86/virt/tdx: Enable TDX module runtime updates
All pieces of TDX module runtime updates are in place. Enable it if it
is supported.
Signed-off-by: Chao Gao <chao.gao@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Xu Yilun <yilun.xu@linux.intel.com>
Reviewed-by: Tony Lindgren <tony.lindgren@linux.intel.com>
Reviewed-by: Kiryl Shutsemau (Meta) <kas@kernel.org>
Reviewed-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Link: https://patch.msgid.link/20260520133909.409394-24-chao.gao@intel.com
| -rw-r--r-- | arch/x86/include/asm/tdx.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/include/asm/tdx.h b/arch/x86/include/asm/tdx.h index 5d750fe53669..e5a9cf656c07 100644 --- a/arch/x86/include/asm/tdx.h +++ b/arch/x86/include/asm/tdx.h @@ -33,6 +33,7 @@ #define TDX_RND_NO_ENTROPY 0x8000020300000000ULL /* Bit definitions of TDX_FEATURES0 metadata field */ +#define TDX_FEATURES0_TD_PRESERVING BIT_ULL(1) #define TDX_FEATURES0_NO_RBP_MOD BIT_ULL(18) #ifndef __ASSEMBLER__ @@ -113,8 +114,7 @@ const struct tdx_sys_info *tdx_get_sysinfo(void); static inline bool tdx_supports_runtime_update(const struct tdx_sys_info *sysinfo) { - /* To be enabled when kernel is ready. */ - return false; + return sysinfo->features.tdx_features0 & TDX_FEATURES0_TD_PRESERVING; } int tdx_guest_keyid_alloc(void); |