[PATCH] x86_64: Switch to the interrupt stack when running a softirq in local_bh_enable()
This avoids some potential stack overflows with very deep softirq callchains.
i386 does this too.
TOADD CFI annotation
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/asm-x86_64/irq.h b/include/asm-x86_64/irq.h
index eb3b7aa..4482657 100644
--- a/include/asm-x86_64/irq.h
+++ b/include/asm-x86_64/irq.h
@@ -57,4 +57,6 @@
extern void fixup_irqs(cpumask_t map);
#endif
+#define __ARCH_HAS_DO_SOFTIRQ 1
+
#endif /* _ASM_IRQ_H */
