diff options
Diffstat (limited to 'include/linux/cpu.h')
| -rw-r--r-- | include/linux/cpu.h | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h index 96a3a0d6a60e..b91b993f58ee 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -82,6 +82,7 @@ extern ssize_t cpu_show_old_microcode(struct device *dev, struct device_attribute *attr, char *buf); extern ssize_t cpu_show_indirect_target_selection(struct device *dev, struct device_attribute *attr, char *buf); +extern ssize_t cpu_show_tsa(struct device *dev, struct device_attribute *attr, char *buf); extern __printf(4, 5) struct device *cpu_device_create(struct device *parent, void *drvdata, @@ -186,20 +187,31 @@ static inline void arch_cpu_finalize_init(void) { } void play_idle_precise(u64 duration_ns, u64 latency_ns); -static inline void play_idle(unsigned long duration_us) -{ - play_idle_precise(duration_us * NSEC_PER_USEC, U64_MAX); -} - #ifdef CONFIG_HOTPLUG_CPU void cpuhp_report_idle_dead(void); #else static inline void cpuhp_report_idle_dead(void) { } #endif /* #ifdef CONFIG_HOTPLUG_CPU */ +enum cpu_attack_vectors { + CPU_MITIGATE_USER_KERNEL, + CPU_MITIGATE_USER_USER, + CPU_MITIGATE_GUEST_HOST, + CPU_MITIGATE_GUEST_GUEST, + NR_CPU_ATTACK_VECTORS, +}; + +enum smt_mitigations { + SMT_MITIGATIONS_OFF, + SMT_MITIGATIONS_AUTO, + SMT_MITIGATIONS_ON, +}; + #ifdef CONFIG_CPU_MITIGATIONS extern bool cpu_mitigations_off(void); extern bool cpu_mitigations_auto_nosmt(void); +extern bool cpu_attack_vector_mitigated(enum cpu_attack_vectors v); +extern enum smt_mitigations smt_mitigations; #else static inline bool cpu_mitigations_off(void) { @@ -209,6 +221,11 @@ static inline bool cpu_mitigations_auto_nosmt(void) { return false; } +static inline bool cpu_attack_vector_mitigated(enum cpu_attack_vectors v) +{ + return false; +} +#define smt_mitigations SMT_MITIGATIONS_OFF #endif #endif /* _LINUX_CPU_H_ */ |