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