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[PATCH] x86_64: Switch to the interrupt stack when running a softirq in local_bh_enable()

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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>
This commit is contained in:
Andi Kleen
2005-07-28 21:15:49 -07:00
committed by Linus Torvalds
parent 3829ee6b1b
commit ed6b676ca8
4 changed files with 35 additions and 2 deletions
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include/asm-x86_64/irq.h
+2
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@@ -57,4 +57,6 @@ int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *);
extern void fixup_irqs(cpumask_t map);
#endif
#define __ARCH_HAS_DO_SOFTIRQ 1
#endif /* _ASM_IRQ_H */