1 files changed, 66 insertions, 0 deletions
diff --git a/arch/x86/include/asm/cpu.h b/arch/x86/include/asm/cpu.h
new file mode 100644
index 000000000..da78ccbd4
--- /dev/null
+++ b/arch/x86/include/asm/cpu.h
@@ -0,0 +1,66 @@
+/* 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 cpu_set_core_cap_bits(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);
+#else
+static inline void __init cpu_set_core_cap_bits(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;
+}
+#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 */