From b5425f5406ee1b4bd84720f68020ef18ce380bab Mon Sep 17 00:00:00 2001 From: Vishal Verma Date: Fri, 9 Jan 2026 12:14:31 -0700 Subject: [PATCH] x86/virt/tdx: Print TDX module version during init It is useful to print the TDX module version in dmesg logs. This is currently the only way to determine the module version from the host. It also creates a record for any future problems being investigated. This was also requested in [1]. Include the version in the log messages during init, e.g.: virt/tdx: TDX module version: 1.5.24 virt/tdx: 1034220 KB allocated for PAMT virt/tdx: module initialized Print the version in get_tdx_sys_info(), right after the version metadata is read, which makes it available even if there are subsequent initialization failures. Based on a patch by Kai Huang [2] Signed-off-by: Vishal Verma Signed-off-by: Dave Hansen Reviewed-by: Chao Gao Reviewed-by: Tony Lindgren Reviewed-by: Kiryl Shutsemau Reviewed-by: Binbin Wu Reviewed-by: Xiaoyao Li Reviewed-by: Rick Edgecombe Reviewed-by: Kai Huang Link: https://lore.kernel.org/all/CAGtprH8eXwi-TcH2+-Fo5YdbEwGmgLBh9ggcDvd6N=bsKEJ_WQ@mail.gmail.com/ # [1] Link: https://lore.kernel.org/all/6b5553756f56a8e3222bfc36d0bdb3e5192137b7.1731318868.git.kai.huang@intel.com # [2] Link: https://patch.msgid.link/20260109-tdx_print_module_version-v2-2-e10e4ca5b450@intel.com --- arch/x86/virt/vmx/tdx/tdx_global_metadata.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/virt/vmx/tdx/tdx_global_metadata.c b/arch/x86/virt/vmx/tdx/tdx_global_metadata.c index 0454124803f36..4c9917a9c2c39 100644 --- a/arch/x86/virt/vmx/tdx/tdx_global_metadata.c +++ b/arch/x86/virt/vmx/tdx/tdx_global_metadata.c @@ -105,6 +105,12 @@ static int get_tdx_sys_info(struct tdx_sys_info *sysinfo) int ret = 0; ret = ret ?: get_tdx_sys_info_version(&sysinfo->version); + + pr_info("Module version: %u.%u.%02u\n", + sysinfo->version.major_version, + sysinfo->version.minor_version, + sysinfo->version.update_version); + ret = ret ?: get_tdx_sys_info_features(&sysinfo->features); ret = ret ?: get_tdx_sys_info_tdmr(&sysinfo->tdmr); ret = ret ?: get_tdx_sys_info_td_ctrl(&sysinfo->td_ctrl); -- 2.47.3