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 #ifdef CONFIG_SMP 13 14 extern void prefill_possible_map(void); 15 16 #else /* CONFIG_SMP */ 17 18 static inline void prefill_possible_map(void) {} 19 20 #define cpu_physical_id(cpu) boot_cpu_physical_apicid 21 #define cpu_acpi_id(cpu) 0 22 #define safe_smp_processor_id() 0 23 24 #endif /* CONFIG_SMP */ 25 26 #ifdef CONFIG_HOTPLUG_CPU 27 extern void soft_restart_cpu(void); 28 #endif 29 30 extern void ap_init_aperfmperf(void); 31 32 int mwait_usable(const struct cpuinfo_x86 *); 33 34 unsigned int x86_family(unsigned int sig); 35 unsigned int x86_model(unsigned int sig); 36 unsigned int x86_stepping(unsigned int sig); 37 #ifdef CONFIG_CPU_SUP_INTEL 38 extern void __init sld_setup(struct cpuinfo_x86 *c); 39 extern bool handle_user_split_lock(struct pt_regs *regs, long error_code); 40 extern bool handle_guest_split_lock(unsigned long ip); 41 extern void handle_bus_lock(struct pt_regs *regs); 42 u8 get_this_hybrid_cpu_type(void); 43 #else 44 static inline void __init sld_setup(struct cpuinfo_x86 *c) {} 45 static inline bool handle_user_split_lock(struct pt_regs *regs, long error_code) 46 { 47 return false; 48 } 49 50 static inline bool handle_guest_split_lock(unsigned long ip) 51 { 52 return false; 53 } 54 55 static inline void handle_bus_lock(struct pt_regs *regs) {} 56 57 static inline u8 get_this_hybrid_cpu_type(void) 58 { 59 return 0; 60 } 61 #endif 62 #ifdef CONFIG_IA32_FEAT_CTL 63 void init_ia32_feat_ctl(struct cpuinfo_x86 *c); 64 #else 65 static inline void init_ia32_feat_ctl(struct cpuinfo_x86 *c) {} 66 #endif 67 68 extern __noendbr void cet_disable(void); 69 70 struct cpu_signature; 71 72 void intel_collect_cpu_info(struct cpu_signature *sig); 73 74 extern u64 x86_read_arch_cap_msr(void); 75 bool intel_find_matching_signature(void *mc, struct cpu_signature *sig); 76 int intel_microcode_sanity_check(void *mc, bool print_err, int hdr_type); 77 78 extern struct cpumask cpus_stop_mask; 79 80 #endif /* _ASM_X86_CPU_H */ 81