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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/x86/include/asm/cpu.h
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/* SPDX-License-Identifier: GPL-2.0 */

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#ifndef _ASM_X86_CPU_H

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#define _ASM_X86_CPU_H

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#include <linux/device.h>

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#include <linux/cpu.h>

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#include <linux/topology.h>

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#include <linux/nodemask.h>

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#include <linux/percpu.h>

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#include <asm/ibt.h>

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#ifndef CONFIG_SMP

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#define cpu_physical_id(cpu)			boot_cpu_physical_apicid

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#define cpu_acpi_id(cpu)			0

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#endif /* CONFIG_SMP */

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#ifdef CONFIG_HOTPLUG_CPU

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extern void soft_restart_cpu(void);

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#endif

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extern void ap_init_aperfmperf(void);

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int mwait_usable(const struct cpuinfo_x86 *);

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unsigned int x86_family(unsigned int sig);

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unsigned int x86_model(unsigned int sig);

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unsigned int x86_stepping(unsigned int sig);

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#ifdef CONFIG_X86_BUS_LOCK_DETECT

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extern void __init sld_setup(struct cpuinfo_x86 *c);

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extern bool handle_user_split_lock(struct pt_regs *regs, long error_code);

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extern bool handle_guest_split_lock(unsigned long ip);

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extern void handle_bus_lock(struct pt_regs *regs);

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void split_lock_init(void);

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void bus_lock_init(void);

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#else

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static inline void __init sld_setup(struct cpuinfo_x86 *c) {}

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static inline bool handle_user_split_lock(struct pt_regs *regs, long error_code)

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{

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	return false;

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}

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static inline bool handle_guest_split_lock(unsigned long ip)

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{

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	return false;

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}

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static inline void handle_bus_lock(struct pt_regs *regs) {}

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static inline void split_lock_init(void) {}

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static inline void bus_lock_init(void) {}

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#endif

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#ifdef CONFIG_IA32_FEAT_CTL

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void init_ia32_feat_ctl(struct cpuinfo_x86 *c);

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#else

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static inline void init_ia32_feat_ctl(struct cpuinfo_x86 *c) {}

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#endif

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extern __noendbr void cet_disable(void);

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struct cpu_signature;

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void intel_collect_cpu_info(struct cpu_signature *sig);

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extern u64 x86_read_arch_cap_msr(void);

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bool intel_find_matching_signature(void *mc, struct cpu_signature *sig);

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int intel_microcode_sanity_check(void *mc, bool print_err, int hdr_type);

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extern struct cpumask cpus_stop_mask;

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#endif /* _ASM_X86_CPU_H */

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