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From: Rusty Russell <rusty@rustcorp.com.au>
To: Ingo Molnar <mingo@kernel.org>,
        Linus Torvalds <torvalds@linux-foundation.org>
Cc: Josh Boyer <jwboyer@gmail.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
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        "H. Peter Anvin" <hpa@zytor.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Josh Boyer <jwboyer@fedoraproject.org>
Subject: Re: [GIT PULL] core kernel update
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Date: Wed, 20 Nov 2013 09:35:10 +1030
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Ingo Molnar <mingo@kernel.org> writes:
> [*] Plus perhaps allow offstack to be configurable arbitrarily if 
>     debugging is enabled [DEBUG_PER_CPU_MAP=y], to allow easy
>     experiments/measurements?

Yes, it was good for i386 testing.

But now it seems that DEBUG_KERNEL is on for every distribution
(AFAICT), it's no longer an obscure option.  I'm happy to kill it.

Cheers,
Rusty.