diff options
| -rw-r--r-- | arch/x86/virt/vmx/tdx/seamldr.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/virt/vmx/tdx/seamldr.c b/arch/x86/virt/vmx/tdx/seamldr.c index 3fe1d397ecd1..54fa797a2019 100644 --- a/arch/x86/virt/vmx/tdx/seamldr.c +++ b/arch/x86/virt/vmx/tdx/seamldr.c @@ -22,6 +22,7 @@ /* P-SEAMLDR SEAMCALL leaf function */ #define P_SEAMLDR_INFO 0x8000000000000000 +#define P_SEAMLDR_INSTALL 0x8000000000000001 #define SEAMLDR_MAX_NR_MODULE_PAGES 496 #define SEAMLDR_MAX_NR_SIG_PAGES 1 @@ -89,6 +90,15 @@ int seamldr_get_info(struct seamldr_info *seamldr_info) } EXPORT_SYMBOL_FOR_MODULES(seamldr_get_info, "tdx-host"); +/* Call into P-SEAMLDR to install a TDX module update */ +static int seamldr_install(const struct seamldr_params *params) +{ + struct tdx_module_args args = {}; + + args.rcx = __pa(params); + return seamldr_call(P_SEAMLDR_INSTALL, &args); +} + #define TDX_IMAGE_VERSION_2 0x200 /* First page of the on-disk module update image: */ @@ -198,6 +208,7 @@ static int init_seamldr_params(struct seamldr_params *params, enum module_update_state { MODULE_UPDATE_START, MODULE_UPDATE_SHUTDOWN, + MODULE_UPDATE_CPU_INSTALL, MODULE_UPDATE_DONE, }; @@ -273,6 +284,9 @@ static int do_seamldr_install_module(void *seamldr_params) if (is_lead_cpu) ret = tdx_module_shutdown(); break; + case MODULE_UPDATE_CPU_INSTALL: + ret = seamldr_install(seamldr_params); + break; default: break; } |