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261cd5ed93
Expose the crash/reboot hooks used by KVM to disable virtualization in hardware and unblock INIT only if there's a potential in-tree user, i.e. either KVM_INTEL or KVM_AMD is enabled. Reviewed-by: Kai Huang <kai.huang@intel.com> Link: https://lore.kernel.org/r/20230721201859.2307736-9-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
41 lines
1.3 KiB
C
41 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_REBOOT_H
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#define _ASM_X86_REBOOT_H
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#include <linux/kdebug.h>
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struct pt_regs;
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struct machine_ops {
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void (*restart)(char *cmd);
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void (*halt)(void);
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void (*power_off)(void);
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void (*shutdown)(void);
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void (*crash_shutdown)(struct pt_regs *);
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void (*emergency_restart)(void);
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};
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extern struct machine_ops machine_ops;
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extern int crashing_cpu;
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void native_machine_crash_shutdown(struct pt_regs *regs);
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void native_machine_shutdown(void);
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void __noreturn machine_real_restart(unsigned int type);
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/* These must match dispatch in arch/x86/realmore/rm/reboot.S */
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#define MRR_BIOS 0
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#define MRR_APM 1
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#if IS_ENABLED(CONFIG_KVM_INTEL) || IS_ENABLED(CONFIG_KVM_AMD)
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typedef void (cpu_emergency_virt_cb)(void);
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void cpu_emergency_register_virt_callback(cpu_emergency_virt_cb *callback);
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void cpu_emergency_unregister_virt_callback(cpu_emergency_virt_cb *callback);
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void cpu_emergency_disable_virtualization(void);
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#else
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static inline void cpu_emergency_disable_virtualization(void) {}
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#endif /* CONFIG_KVM_INTEL || CONFIG_KVM_AMD */
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typedef void (*nmi_shootdown_cb)(int, struct pt_regs*);
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void nmi_shootdown_cpus(nmi_shootdown_cb callback);
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void run_crash_ipi_callback(struct pt_regs *regs);
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#endif /* _ASM_X86_REBOOT_H */
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