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 14extern void prefill_possible_map(void); 15 16#else /* CONFIG_SMP */ 17 18static 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 26struct x86_cpu { 27 struct cpu cpu; 28}; 29 30#ifdef CONFIG_HOTPLUG_CPU 31extern void soft_restart_cpu(void); 32#endif 33 34extern void ap_init_aperfmperf(void); 35 36int mwait_usable(const struct cpuinfo_x86 *); 37 38unsigned int x86_family(unsigned int sig); 39unsigned int x86_model(unsigned int sig); 40unsigned int x86_stepping(unsigned int sig); 41#ifdef CONFIG_CPU_SUP_INTEL 42extern void __init sld_setup(struct cpuinfo_x86 *c); 43extern bool handle_user_split_lock(struct pt_regs *regs, long error_code); 44extern bool handle_guest_split_lock(unsigned long ip); 45extern void handle_bus_lock(struct pt_regs *regs); 46u8 get_this_hybrid_cpu_type(void); 47#else 48static inline void __init sld_setup(struct cpuinfo_x86 *c) {} 49static inline bool handle_user_split_lock(struct pt_regs *regs, long error_code) 50{ 51 return false; 52} 53 54static inline bool handle_guest_split_lock(unsigned long ip) 55{ 56 return false; 57} 58 59static inline void handle_bus_lock(struct pt_regs *regs) {} 60 61static inline u8 get_this_hybrid_cpu_type(void) 62{ 63 return 0; 64} 65#endif 66#ifdef CONFIG_IA32_FEAT_CTL 67void init_ia32_feat_ctl(struct cpuinfo_x86 *c); 68#else 69static inline void init_ia32_feat_ctl(struct cpuinfo_x86 *c) {} 70#endif 71 72extern __noendbr void cet_disable(void); 73 74struct ucode_cpu_info; 75 76int intel_cpu_collect_info(struct ucode_cpu_info *uci); 77 78static inline bool intel_cpu_signatures_match(unsigned int s1, unsigned int p1, 79 unsigned int s2, unsigned int p2) 80{ 81 if (s1 != s2) 82 return false; 83 84 /* Processor flags are either both 0 ... */ 85 if (!p1 && !p2) 86 return true; 87 88 /* ... or they intersect. */ 89 return p1 & p2; 90} 91 92extern u64 x86_read_arch_cap_msr(void); 93int intel_find_matching_signature(void *mc, unsigned int csig, int cpf); 94int intel_microcode_sanity_check(void *mc, bool print_err, int hdr_type); 95 96extern struct cpumask cpus_stop_mask; 97 98#endif /* _ASM_X86_CPU_H */ 99