linux-kernel - Re: [PATCH UPDATE] deflate stack usage in lib/inflate.c

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Message-ID: <461EB938.6080807@goop.org>
Date:	Thu, 12 Apr 2007 15:56:56 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Andi Kleen <ak@...e.de>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Tim Yamin <plasmaroo@...too.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH UPDATE] deflate stack usage in lib/inflate.c

Andi Kleen wrote:
>> (This was under Xen, but there's no reason it couldn't happen on bare
>>   hardware.)
>>     
>
> Hmm, does Xen perhaps not use interrupt stacks?

Looks like that's all done in do_IRQ, so it should be independent of
whether its Xen or not.  And the stack overflow check is performed on
the main stack, before switching to the interrupt stack.

    J
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