diff options
Diffstat (limited to 'arch/x86/virt/vmx/tdx/tdx_global_metadata.c')
| -rw-r--r-- | arch/x86/virt/vmx/tdx/tdx_global_metadata.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/arch/x86/virt/vmx/tdx/tdx_global_metadata.c b/arch/x86/virt/vmx/tdx/tdx_global_metadata.c index 8027a24d1c6e..13ad2663488b 100644 --- a/arch/x86/virt/vmx/tdx/tdx_global_metadata.c +++ b/arch/x86/virt/vmx/tdx/tdx_global_metadata.c @@ -37,12 +37,62 @@ static int get_tdx_sys_info_tdmr(struct tdx_sys_info_tdmr *sysinfo_tdmr) return ret; } +static int get_tdx_sys_info_td_ctrl(struct tdx_sys_info_td_ctrl *sysinfo_td_ctrl) +{ + int ret = 0; + u64 val; + + if (!ret && !(ret = read_sys_metadata_field(0x9800000100000000, &val))) + sysinfo_td_ctrl->tdr_base_size = val; + if (!ret && !(ret = read_sys_metadata_field(0x9800000100000100, &val))) + sysinfo_td_ctrl->tdcs_base_size = val; + if (!ret && !(ret = read_sys_metadata_field(0x9800000100000200, &val))) + sysinfo_td_ctrl->tdvps_base_size = val; + + return ret; +} + +static int get_tdx_sys_info_td_conf(struct tdx_sys_info_td_conf *sysinfo_td_conf) +{ + int ret = 0; + u64 val; + int i, j; + + if (!ret && !(ret = read_sys_metadata_field(0x1900000300000000, &val))) + sysinfo_td_conf->attributes_fixed0 = val; + if (!ret && !(ret = read_sys_metadata_field(0x1900000300000001, &val))) + sysinfo_td_conf->attributes_fixed1 = val; + if (!ret && !(ret = read_sys_metadata_field(0x1900000300000002, &val))) + sysinfo_td_conf->xfam_fixed0 = val; + if (!ret && !(ret = read_sys_metadata_field(0x1900000300000003, &val))) + sysinfo_td_conf->xfam_fixed1 = val; + if (!ret && !(ret = read_sys_metadata_field(0x9900000100000004, &val))) + sysinfo_td_conf->num_cpuid_config = val; + if (!ret && !(ret = read_sys_metadata_field(0x9900000100000008, &val))) + sysinfo_td_conf->max_vcpus_per_td = val; + if (sysinfo_td_conf->num_cpuid_config > ARRAY_SIZE(sysinfo_td_conf->cpuid_config_leaves)) + return -EINVAL; + for (i = 0; i < sysinfo_td_conf->num_cpuid_config; i++) + if (!ret && !(ret = read_sys_metadata_field(0x9900000300000400 + i, &val))) + sysinfo_td_conf->cpuid_config_leaves[i] = val; + if (sysinfo_td_conf->num_cpuid_config > ARRAY_SIZE(sysinfo_td_conf->cpuid_config_values)) + return -EINVAL; + for (i = 0; i < sysinfo_td_conf->num_cpuid_config; i++) + for (j = 0; j < 2; j++) + if (!ret && !(ret = read_sys_metadata_field(0x9900000300000500 + i * 2 + j, &val))) + sysinfo_td_conf->cpuid_config_values[i][j] = val; + + return ret; +} + static int get_tdx_sys_info(struct tdx_sys_info *sysinfo) { int ret = 0; 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); + ret = ret ?: get_tdx_sys_info_td_conf(&sysinfo->td_conf); return ret; } |