Re: [PATCH] Revert "x86: Disable IST stacks for debug/int 3/stackfault for PREEMPT_RT"

From: Andi Kleen
Date: Sat Jan 04 2014 - 13:18:16 EST

On Fri, Jan 03, 2014 at 02:55:48PM +0100, Sebastian Andrzej Siewior wrote:
> where do I start. Let me explain what is going on here. The code
> sequence

Yes the IST stacks are needed for correctness, even in more cases than
the example below. You cannot just disable them, just because you don't
like them.

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