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 11 #include <asm/ibt.h> 12 #include <asm/cpuid/leaf_types.h> 13 14 #ifndef CONFIG_SMP 15 #define cpu_physical_id(cpu) boot_cpu_physical_apicid 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 30 unsigned int cpuid_family(const struct leaf_0x1_0 *l); 31 unsigned int cpuid_model(const struct leaf_0x1_0 *l); 32 33 #ifdef CONFIG_X86_BUS_LOCK_DETECT 34 extern void __init sld_setup(struct cpuinfo_x86 *c); 35 extern bool handle_user_split_lock(struct pt_regs *regs, long error_code); 36 extern bool handle_guest_split_lock(unsigned long ip); 37 extern void handle_bus_lock(struct pt_regs *regs); 38 void split_lock_init(void); 39 void bus_lock_init(void); 40 #else 41 static inline void __init sld_setup(struct cpuinfo_x86 *c) {} 42 static inline bool handle_user_split_lock(struct pt_regs *regs, long error_code) 43 { 44 return false; 45 } 46 47 static inline bool handle_guest_split_lock(unsigned long ip) 48 { 49 return false; 50 } 51 52 static inline void handle_bus_lock(struct pt_regs *regs) {} 53 static inline void split_lock_init(void) {} 54 static inline void bus_lock_init(void) {} 55 #endif 56 57 #ifdef CONFIG_IA32_FEAT_CTL 58 void init_ia32_feat_ctl(struct cpuinfo_x86 *c); 59 #else 60 static inline void init_ia32_feat_ctl(struct cpuinfo_x86 *c) {} 61 #endif 62 63 extern __noendbr void cet_disable(void); 64 65 struct cpu_signature; 66 67 void intel_collect_cpu_info(struct cpu_signature *sig); 68 69 extern u64 x86_read_arch_cap_msr(void); 70 bool intel_find_matching_signature(void *mc, struct cpu_signature *sig); 71 int intel_microcode_sanity_check(void *mc, bool print_err, int hdr_type); 72 73 extern struct cpumask cpus_stop_mask; 74 75 #endif /* _ASM_X86_CPU_H */ 76