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