Re: [PATCH] x86-32: always use irq stacks

From: Thomas Gleixner
Date: Wed May 26 2010 - 08:49:45 EST


On Wed, 26 May 2010, Christoph Hellwig wrote:

>
> IRQ stacks provide much better safety against unexpected stack use from
> interrupts, at the minimal downside of slightly higher memory usage.
> Enable irq stacks also for the default 8k stack to minimize the problem
> of stack overflows through interrupt activity.
>
> This is what x86-64 and various other architectures already do.

We got rid of nested interrupts, so is this really a concern anymore ?

Thanks,

tglx
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