diff options
Diffstat (limited to 'arch/x86/kernel/cpu/bugs.c')
| -rw-r--r-- | arch/x86/kernel/cpu/bugs.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c index 246a76ddbf46..7caba0bb737d 100644 --- a/arch/x86/kernel/cpu/bugs.c +++ b/arch/x86/kernel/cpu/bugs.c @@ -2963,6 +2963,14 @@ static ssize_t rfds_show_state(char *buf) return sysfs_emit(buf, "%s\n", rfds_strings[rfds_mitigation]); } +static ssize_t old_microcode_show_state(char *buf) +{ + if (boot_cpu_has(X86_FEATURE_HYPERVISOR)) + return sysfs_emit(buf, "Unknown: running under hypervisor"); + + return sysfs_emit(buf, "Vulnerable\n"); +} + static char *stibp_state(void) { if (spectre_v2_in_eibrs_mode(spectre_v2_enabled) && @@ -3144,6 +3152,9 @@ static ssize_t cpu_show_common(struct device *dev, struct device_attribute *attr case X86_BUG_RFDS: return rfds_show_state(buf); + case X86_BUG_OLD_MICROCODE: + return old_microcode_show_state(buf); + default: break; } @@ -3220,6 +3231,11 @@ ssize_t cpu_show_reg_file_data_sampling(struct device *dev, struct device_attrib { return cpu_show_common(dev, attr, buf, X86_BUG_RFDS); } + +ssize_t cpu_show_old_microcode(struct device *dev, struct device_attribute *attr, char *buf) +{ + return cpu_show_common(dev, attr, buf, X86_BUG_OLD_MICROCODE); +} #endif void __warn_thunk(void) |