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

[Sebastian Andrzej Siewior]

* Andi Kleen | 2014-01-04 19:18:07 [+0100]:

>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.

Andi, you were the Author of that patch.
I plan to migrate from the IST stack to the kernel stack so I can enable
preemption. This is he case on 32bit. You mention more cases than this.
Could you please give me some examples so I can consider them?

>-Andi

Sebastian
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