From: Andi Kleen <andi@firstfloor.org>
To: Dave Chinner <david@fromorbit.com>
Cc: Andi Kleen <andi@firstfloor.org>,
Christoph Hellwig <hch@infradead.org>,
linux-mm@kvack.org, xfs@oss.sgi.com,
"Ryan C. England" <ryan.england@corvidtec.com>
Subject: Re: XFS causing stack overflow
Date: Mon, 12 Dec 2011 03:31:30 +0100 [thread overview]
Message-ID: <20111212023130.GI24062@one.firstfloor.org> (raw)
In-Reply-To: <20111211230511.GH14273@dastard>
> But that happens before do_IRQ is called, so what is the do_IRQ call
> chain doing on this stack given that we've already supposed to have
> switched to the interrupt stack before do_IRQ is called?
Not sure I understand the question.
The pt_regs are on the original stack (but they are quite small), all the rest
is on the new stack. ISTs are not used for interrupts, only for
some special exceptions. do_IRQ doesn't switch any stacks on 64bit.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
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next prev parent reply other threads:[~2011-12-12 2:31 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAAnfqPAm559m-Bv8LkHARm7iBW5Kfs7NmjTFidmg-idhcOq4sQ@mail.gmail.com>
2011-12-09 11:55 ` Christoph Hellwig
2011-12-09 15:56 ` Ryan C. England
2011-12-09 22:19 ` Dave Chinner
[not found] ` <20111209221956.GE14273__25752.826271537$1323469420$gmane$org@dastard>
2011-12-10 19:52 ` Andi Kleen
2011-12-10 22:13 ` Dave Chinner
2011-12-11 0:00 ` Andi Kleen
2011-12-11 23:05 ` Dave Chinner
2011-12-12 2:31 ` Andi Kleen [this message]
2011-12-12 4:36 ` Dave Chinner
2011-12-12 5:13 ` Andi Kleen
2011-12-12 9:00 ` Dave Chinner
2011-12-12 13:43 ` Ryan C. England
2011-12-12 22:47 ` Dave Chinner
[not found] ` <20111209115513.GA19994__23079.9863501035$1323435203$gmane$org@infradead.org>
2011-12-09 19:53 ` Andi Kleen
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