1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_X86_CPU_H 3 #define _ASM_X86_CPU_H 4 5 #include <linux/device.h> 6 #include <linux/cpu.h> 7 #include <linux/topology.h> 8 #include <linux/nodemask.h> 9 #include <linux/percpu.h> 10 #include <asm/ibt.h> 11 12 #ifndef CONFIG_SMP 13 #define cpu_physical_id(cpu) boot_cpu_physical_apicid 14 #define cpu_acpi_id(cpu) 0 15 #define safe_smp_processor_id() 0 16 #endif /* CONFIG_SMP */ 17 18 #ifdef CONFIG_HOTPLUG_CPU 19 extern void soft_restart_cpu(void); 20 #endif 21 22 extern void ap_init_aperfmperf(void); 23 24 int mwait_usable(const struct cpuinfo_x86 *); 25 26 unsigned int x86_family(unsigned int sig); 27 unsigned int x86_model(unsigned int sig); 28 unsigned int x86_stepping(unsigned int sig); 29 #ifdef CONFIG_X86_BUS_LOCK_DETECT 30 extern void __init sld_setup(struct cpuinfo_x86 *c); 31 extern bool handle_user_split_lock(struct pt_regs *regs, long error_code); 32 extern bool handle_guest_split_lock(unsigned long ip); 33 extern void handle_bus_lock(struct pt_regs *regs); 34 void split_lock_init(void); 35 void bus_lock_init(void); 36 #else 37 static inline void __init sld_setup(struct cpuinfo_x86 *c) {} 38 static inline bool handle_user_split_lock(struct pt_regs *regs, long error_code) 39 { 40 return false; 41 } 42 43 static inline bool handle_guest_split_lock(unsigned long ip) 44 { 45 return false; 46 } 47 48 static inline void handle_bus_lock(struct pt_regs *regs) {} 49 static inline void split_lock_init(void) {} 50 static inline void bus_lock_init(void) {} 51 #endif 52 53 #ifdef CONFIG_CPU_SUP_INTEL 54 u8 get_this_hybrid_cpu_type(void); 55 u32 get_this_hybrid_cpu_native_id(void); 56 #else 57 static inline u8 get_this_hybrid_cpu_type(void) 58 { 59 return 0; 60 } 61 62 static inline u32 get_this_hybrid_cpu_native_id(void) 63 { 64 return 0; 65 } 66 #endif 67 #ifdef CONFIG_IA32_FEAT_CTL 68 void init_ia32_feat_ctl(struct cpuinfo_x86 *c); 69 #else 70 static inline void init_ia32_feat_ctl(struct cpuinfo_x86 *c) {} 71 #endif 72 73 extern __noendbr void cet_disable(void); 74 75 struct cpu_signature; 76 77 void intel_collect_cpu_info(struct cpu_signature *sig); 78 79 extern u64 x86_read_arch_cap_msr(void); 80 bool intel_find_matching_signature(void *mc, struct cpu_signature *sig); 81 int intel_microcode_sanity_check(void *mc, bool print_err, int hdr_type); 82 83 extern struct cpumask cpus_stop_mask; 84 85 #endif /* _ASM_X86_CPU_H */ 86