コード例 #1
0
ファイル: crash.c プロジェクト: 3sOx/asuswrt-merlin
static int crash_nmi_callback(struct notifier_block *self,
			unsigned long val, void *data)
{
	struct pt_regs *regs;
	struct pt_regs fixed_regs;
	int cpu;

	if (val != DIE_NMI_IPI)
		return NOTIFY_OK;

	regs = ((struct die_args *)data)->regs;
	cpu = raw_smp_processor_id();

	/* Don't do anything if this handler is invoked on crashing cpu.
	 * Otherwise, system will completely hang. Crashing cpu can get
	 * an NMI if system was initially booted with nmi_watchdog parameter.
	 */
	if (cpu == crashing_cpu)
		return NOTIFY_STOP;
	local_irq_disable();

	if (!user_mode_vm(regs)) {
		crash_fixup_ss_esp(&fixed_regs, regs);
		regs = &fixed_regs;
	}
	crash_save_cpu(regs, cpu);
	disable_local_APIC();
	atomic_dec(&waiting_for_crash_ipi);
	/* Assume hlt works */
	halt();
	for (;;)
		cpu_relax();

	return 1;
}
コード例 #2
0
ファイル: crash.c プロジェクト: AkyZero/wrapfs-latest
static void kdump_nmi_callback(int cpu, struct pt_regs *regs)
{
#ifdef CONFIG_X86_32
	struct pt_regs fixed_regs;

	if (!user_mode_vm(regs)) {
		crash_fixup_ss_esp(&fixed_regs, regs);
		regs = &fixed_regs;
	}
#endif
	crash_save_cpu(regs, cpu);

	/*
	 * VMCLEAR VMCSs loaded on all cpus if needed.
	 */
	cpu_crash_vmclear_loaded_vmcss();

	/* Disable VMX or SVM if needed.
	 *
	 * We need to disable virtualization on all CPUs.
	 * Having VMX or SVM enabled on any CPU may break rebooting
	 * after the kdump kernel has finished its task.
	 */
	cpu_emergency_vmxoff();
	cpu_emergency_svm_disable();

	disable_local_APIC();
}
コード例 #3
0
ファイル: crash.c プロジェクト: Broadcom/stblinux-2.6.18
static int crash_nmi_callback(struct pt_regs *regs, int cpu)
{
	struct pt_regs fixed_regs;

	/* Don't do anything if this handler is invoked on crashing cpu.
	 * Otherwise, system will completely hang. Crashing cpu can get
	 * an NMI if system was initially booted with nmi_watchdog parameter.
	 */
	if (cpu == crashing_cpu)
		return 1;
	local_irq_disable();

	if (!user_mode_vm(regs)) {
		crash_fixup_ss_esp(&fixed_regs, regs);
		regs = &fixed_regs;
	}
	crash_save_this_cpu(regs, cpu);
	disable_local_APIC();
	atomic_dec(&waiting_for_crash_ipi);
	/* Assume hlt works */
	halt();
	for (;;)
		cpu_relax();

	return 1;
}