== NOTIFY_STOP)
return;
+ /*
+ * Let others (NMI) know that the debug stack is in use
+ * as we may switch to the interrupt stack.
+ */
+ debug_stack_usage_inc();
preempt_conditional_sti(regs);
do_trap(3, SIGTRAP, "int3", regs, error_code, NULL);
preempt_conditional_cli(regs);
+ debug_stack_usage_dec();
}
#ifdef CONFIG_X86_64
SIGTRAP) == NOTIFY_STOP)
return;
+ /*
+ * Let others (NMI) know that the debug stack is in use
+ * as we may switch to the interrupt stack.
+ */
+ debug_stack_usage_inc();
+
/* It's safe to allow irq's after DR6 has been saved */
preempt_conditional_sti(regs);
handle_vm86_trap((struct kernel_vm86_regs *) regs,
error_code, 1);
preempt_conditional_cli(regs);
+ debug_stack_usage_dec();
return;
}
if (tsk->thread.debugreg6 & (DR_STEP | DR_TRAP_BITS) || user_icebp)
send_sigtrap(tsk, regs, error_code, si_code);
preempt_conditional_cli(regs);
+ debug_stack_usage_dec();
return;
}
cpu_init();
x86_init.irqs.trap_init();
+
+#ifdef CONFIG_X86_64
+ memcpy(&nmi_idt_table, &idt_table, IDT_ENTRIES * 16);
+ set_nmi_gate(1, &debug);
+ set_nmi_gate(3, &int3);
+#endif
}