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 #endif /* CONFIG_SMP */ 16 17 #ifdef CONFIG_HOTPLUG_CPU 18 extern void soft_restart_cpu(void); 19 #endif 20 21 extern void ap_init_aperfmperf(void); 22 23 int mwait_usable(const struct cpuinfo_x86 *); 24 25 unsigned int x86_family(unsigned int sig); 26 unsigned int x86_model(unsigned int sig); 27 unsigned int x86_stepping(unsigned int sig); 28 #ifdef CONFIG_X86_BUS_LOCK_DETECT 29 extern void __init sld_setup(struct cpuinfo_x86 *c); 30 extern bool handle_user_split_lock(struct pt_regs *regs, long error_code); 31 extern bool handle_guest_split_lock(unsigned long ip); 32 extern void handle_bus_lock(struct pt_regs *regs); 33 void split_lock_init(void); 34 void bus_lock_init(void); 35 #else sld_setup(struct cpuinfo_x86 * c)36static inline void __init sld_setup(struct cpuinfo_x86 *c) {} handle_user_split_lock(struct pt_regs * regs,long error_code)37static inline bool handle_user_split_lock(struct pt_regs *regs, long error_code) 38 { 39 return false; 40 } 41 handle_guest_split_lock(unsigned long ip)42static inline bool handle_guest_split_lock(unsigned long ip) 43 { 44 return false; 45 } 46 handle_bus_lock(struct pt_regs * regs)47static inline void handle_bus_lock(struct pt_regs *regs) {} split_lock_init(void)48static inline void split_lock_init(void) {} bus_lock_init(void)49static inline void bus_lock_init(void) {} 50 #endif 51 52 #ifdef CONFIG_IA32_FEAT_CTL 53 void init_ia32_feat_ctl(struct cpuinfo_x86 *c); 54 #else init_ia32_feat_ctl(struct cpuinfo_x86 * c)55static inline void init_ia32_feat_ctl(struct cpuinfo_x86 *c) {} 56 #endif 57 58 extern __noendbr void cet_disable(void); 59 60 struct cpu_signature; 61 62 void intel_collect_cpu_info(struct cpu_signature *sig); 63 64 extern u64 x86_read_arch_cap_msr(void); 65 bool intel_find_matching_signature(void *mc, struct cpu_signature *sig); 66 int intel_microcode_sanity_check(void *mc, bool print_err, int hdr_type); 67 68 extern struct cpumask cpus_stop_mask; 69 70 #endif /* _ASM_X86_CPU_H */ 71