Re: [RFC PATCH 0/5] x86: check stack overflows more reliably

[Pekka Enberg]

On Mon, Nov 7, 2011 at 7:51 AM, Mitsuo Hayasaka
<mitsuo.hayasaka.hu@xxxxxxxxxxx> wrote:
> (2) check stack overflow in detail
>    Currently, only kernel stack is checked for the overflow,
>    which is not sufficient for enterprise systems. To enhance
>    reliability, expand stack overflow checking to IRQ and
>    exception stacks optionally. This is disabled by default
>    in Kconfig.

This sounds useful. What's the reason for not enabling this by
default? Performance regressions?

                        Pekka
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