Linux kernel mirror (for testing)
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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_X86_BUS_LOCK_DETECT
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);
34void split_lock_init(void);
35void bus_lock_init(void);
36#else
37static inline void __init sld_setup(struct cpuinfo_x86 *c) {}
38static inline bool handle_user_split_lock(struct pt_regs *regs, long error_code)
39{
40 return false;
41}
42
43static inline bool handle_guest_split_lock(unsigned long ip)
44{
45 return false;
46}
47
48static inline void handle_bus_lock(struct pt_regs *regs) {}
49static inline void split_lock_init(void) {}
50static inline void bus_lock_init(void) {}
51#endif
52
53#ifdef CONFIG_CPU_SUP_INTEL
54u8 get_this_hybrid_cpu_type(void);
55u32 get_this_hybrid_cpu_native_id(void);
56#else
57static inline u8 get_this_hybrid_cpu_type(void)
58{
59 return 0;
60}
61
62static inline u32 get_this_hybrid_cpu_native_id(void)
63{
64 return 0;
65}
66#endif
67#ifdef CONFIG_IA32_FEAT_CTL
68void init_ia32_feat_ctl(struct cpuinfo_x86 *c);
69#else
70static inline void init_ia32_feat_ctl(struct cpuinfo_x86 *c) {}
71#endif
72
73extern __noendbr void cet_disable(void);
74
75struct cpu_signature;
76
77void intel_collect_cpu_info(struct cpu_signature *sig);
78
79extern u64 x86_read_arch_cap_msr(void);
80bool intel_find_matching_signature(void *mc, struct cpu_signature *sig);
81int intel_microcode_sanity_check(void *mc, bool print_err, int hdr_type);
82
83extern struct cpumask cpus_stop_mask;
84
85#endif /* _ASM_X86_CPU_H */