x86/mm: Improve stack-overflow #PF handling

[deliverable/linux.git] / arch / x86 / include / asm / traps.h

diff --git a/arch/x86/include/asm/traps.h b/arch/x86/include/asm/traps.h
index c3496619740aa01711e8e4fa53b62d2f4074561c..01fd0a7f48cd2f97dac2c1fd20e809e17975ad34 100644 (file)
--- a/arch/x86/include/asm/traps.h
+++ b/arch/x86/include/asm/traps.h
@@ -117,6 +117,12 @@ extern void ist_exit(struct pt_regs *regs);
 extern void ist_begin_non_atomic(struct pt_regs *regs);
 extern void ist_end_non_atomic(void);
 
+#ifdef CONFIG_VMAP_STACK
+void __noreturn handle_stack_overflow(const char *message,
+                                     struct pt_regs *regs,
+                                     unsigned long fault_address);
+#endif
+
 /* Interrupts/Exceptions */
 enum {
        X86_TRAP_DE = 0,        /*  0, Divide-by-zero */