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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_X86_CPU_H #define _ASM_X86_CPU_H #include <linux/device.h> #include <linux/cpu.h> #include <linux/topology.h> #include <linux/nodemask.h> #include <linux/percpu.h> #ifdef CONFIG_SMP extern void prefill_possible_map(void); #else /* CONFIG_SMP */ static inline void prefill_possible_map(void) {} #define cpu_physical_id(cpu) boot_cpu_physical_apicid #define cpu_acpi_id(cpu) 0 #define safe_smp_processor_id() 0 #endif /* CONFIG_SMP */ struct x86_cpu { struct cpu cpu; }; #ifdef CONFIG_HOTPLUG_CPU extern int arch_register_cpu(int num); extern void arch_unregister_cpu(int); extern void start_cpu0(void); #ifdef CONFIG_DEBUG_HOTPLUG_CPU0 extern int _debug_hotplug_cpu(int cpu, int action); #endif #endif int mwait_usable(const struct cpuinfo_x86 *); unsigned int x86_family(unsigned int sig); unsigned int x86_model(unsigned int sig); unsigned int x86_stepping(unsigned int sig); #ifdef CONFIG_CPU_SUP_INTEL extern void __init sld_setup(struct cpuinfo_x86 *c); extern void switch_to_sld(unsigned long tifn); extern bool handle_user_split_lock(struct pt_regs *regs, long error_code); extern bool handle_guest_split_lock(unsigned long ip); extern void handle_bus_lock(struct pt_regs *regs); u8 get_this_hybrid_cpu_type(void); #else static inline void __init sld_setup(struct cpuinfo_x86 *c) {} static inline void switch_to_sld(unsigned long tifn) {} static inline bool handle_user_split_lock(struct pt_regs *regs, long error_code) { return false; } static inline bool handle_guest_split_lock(unsigned long ip) { return false; } static inline void handle_bus_lock(struct pt_regs *regs) {} static inline u8 get_this_hybrid_cpu_type(void) { return 0; } #endif #ifdef CONFIG_IA32_FEAT_CTL void init_ia32_feat_ctl(struct cpuinfo_x86 *c); #else static inline void init_ia32_feat_ctl(struct cpuinfo_x86 *c) {} #endif #endif /* _ASM_X86_CPU_H */