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
11#ifdef CONFIG_SMP
12
13extern void prefill_possible_map(void);
14
15#else /* CONFIG_SMP */
16
17static inline void prefill_possible_map(void) {}
18
19#define cpu_physical_id(cpu)			boot_cpu_physical_apicid
20#define cpu_acpi_id(cpu)			0
21#define safe_smp_processor_id()			0
22
23#endif /* CONFIG_SMP */
24
25struct x86_cpu {
26	struct cpu cpu;
27};
28
29#ifdef CONFIG_HOTPLUG_CPU
30extern int arch_register_cpu(int num);
31extern void arch_unregister_cpu(int);
32extern void start_cpu0(void);
33#ifdef CONFIG_DEBUG_HOTPLUG_CPU0
34extern int _debug_hotplug_cpu(int cpu, int action);
35#endif
36#endif
37
 
 
38int mwait_usable(const struct cpuinfo_x86 *);
39
40unsigned int x86_family(unsigned int sig);
41unsigned int x86_model(unsigned int sig);
42unsigned int x86_stepping(unsigned int sig);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
43#endif /* _ASM_X86_CPU_H */

  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 int arch_register_cpu(int num);
 32extern void arch_unregister_cpu(int);
 33extern void start_cpu0(void);
 34#ifdef CONFIG_DEBUG_HOTPLUG_CPU0
 35extern int _debug_hotplug_cpu(int cpu, int action);
 36#endif
 37#endif
 38
 39extern void ap_init_aperfmperf(void);
 40
 41int mwait_usable(const struct cpuinfo_x86 *);
 42
 43unsigned int x86_family(unsigned int sig);
 44unsigned int x86_model(unsigned int sig);
 45unsigned int x86_stepping(unsigned int sig);
 46#ifdef CONFIG_CPU_SUP_INTEL
 47extern void __init sld_setup(struct cpuinfo_x86 *c);
 48extern bool handle_user_split_lock(struct pt_regs *regs, long error_code);
 49extern bool handle_guest_split_lock(unsigned long ip);
 50extern void handle_bus_lock(struct pt_regs *regs);
 51u8 get_this_hybrid_cpu_type(void);
 52#else
 53static inline void __init sld_setup(struct cpuinfo_x86 *c) {}
 54static inline bool handle_user_split_lock(struct pt_regs *regs, long error_code)
 55{
 56	return false;
 57}
 58
 59static inline bool handle_guest_split_lock(unsigned long ip)
 60{
 61	return false;
 62}
 63
 64static inline void handle_bus_lock(struct pt_regs *regs) {}
 65
 66static inline u8 get_this_hybrid_cpu_type(void)
 67{
 68	return 0;
 69}
 70#endif
 71#ifdef CONFIG_IA32_FEAT_CTL
 72void init_ia32_feat_ctl(struct cpuinfo_x86 *c);
 73#else
 74static inline void init_ia32_feat_ctl(struct cpuinfo_x86 *c) {}
 75#endif
 76
 77extern __noendbr void cet_disable(void);
 78
 79struct ucode_cpu_info;
 80
 81int intel_cpu_collect_info(struct ucode_cpu_info *uci);
 82
 83static inline bool intel_cpu_signatures_match(unsigned int s1, unsigned int p1,
 84					      unsigned int s2, unsigned int p2)
 85{
 86	if (s1 != s2)
 87		return false;
 88
 89	/* Processor flags are either both 0 ... */
 90	if (!p1 && !p2)
 91		return true;
 92
 93	/* ... or they intersect. */
 94	return p1 & p2;
 95}
 96
 97extern u64 x86_read_arch_cap_msr(void);
 98int intel_find_matching_signature(void *mc, unsigned int csig, int cpf);
 99int intel_microcode_sanity_check(void *mc, bool print_err, int hdr_type);
100
101#endif /* _ASM_X86_CPU_H */