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 | |
14 | extern void prefill_possible_map(void); |
15 | |
16 | #else /* CONFIG_SMP */ |
17 | |
18 | static 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 | |
26 | struct x86_cpu { |
27 | struct cpu cpu; |
28 | }; |
29 | |
30 | #ifdef CONFIG_HOTPLUG_CPU |
31 | extern void soft_restart_cpu(void); |
32 | #endif |
33 | |
34 | extern void ap_init_aperfmperf(void); |
35 | |
36 | int mwait_usable(const struct cpuinfo_x86 *); |
37 | |
38 | unsigned int x86_family(unsigned int sig); |
39 | unsigned int x86_model(unsigned int sig); |
40 | unsigned int x86_stepping(unsigned int sig); |
41 | #ifdef CONFIG_CPU_SUP_INTEL |
42 | extern void __init sld_setup(struct cpuinfo_x86 *c); |
43 | extern bool handle_user_split_lock(struct pt_regs *regs, long error_code); |
44 | extern bool handle_guest_split_lock(unsigned long ip); |
45 | extern void handle_bus_lock(struct pt_regs *regs); |
46 | u8 get_this_hybrid_cpu_type(void); |
47 | #else |
48 | static inline void __init sld_setup(struct cpuinfo_x86 *c) {} |
49 | static inline bool handle_user_split_lock(struct pt_regs *regs, long error_code) |
50 | { |
51 | return false; |
52 | } |
53 | |
54 | static inline bool handle_guest_split_lock(unsigned long ip) |
55 | { |
56 | return false; |
57 | } |
58 | |
59 | static inline void handle_bus_lock(struct pt_regs *regs) {} |
60 | |
61 | static inline u8 get_this_hybrid_cpu_type(void) |
62 | { |
63 | return 0; |
64 | } |
65 | #endif |
66 | #ifdef CONFIG_IA32_FEAT_CTL |
67 | void init_ia32_feat_ctl(struct cpuinfo_x86 *c); |
68 | #else |
69 | static inline void init_ia32_feat_ctl(struct cpuinfo_x86 *c) {} |
70 | #endif |
71 | |
72 | extern __noendbr void cet_disable(void); |
73 | |
74 | struct cpu_signature; |
75 | |
76 | void intel_collect_cpu_info(struct cpu_signature *sig); |
77 | |
78 | extern u64 x86_read_arch_cap_msr(void); |
79 | bool intel_find_matching_signature(void *mc, struct cpu_signature *sig); |
80 | int intel_microcode_sanity_check(void *mc, bool print_err, int hdr_type); |
81 | |
82 | extern struct cpumask cpus_stop_mask; |
83 | |
84 | #endif /* _ASM_X86_CPU_H */ |
85 | |