From: Andrew Morton <akpm@linux-foundation.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>,
"Ozan Çağlayan" <ozan@pardus.org.tr>,
"Yinghai Lu" <yinghai@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
mingo@elte.hu, a.p.zijlstra@chello.nl, stable@kernel.org,
"Linus Torvalds" <torvalds@linux-foundation.org>,
"Jaswinder Singh Rajput" <jaswinder@kernel.org>,
"Thomas Gleixner" <tglx@linutronix.de>
Subject: Re: RFC: deprecate CONFIG_X86_CPU_DEBUG and schedule it for rapid removal
Date: Fri, 22 Jan 2010 16:53:56 -0800 [thread overview]
Message-ID: <20100122165356.55cf88aa.akpm@linux-foundation.org> (raw)
In-Reply-To: <4B53B8DD.9000809@zytor.com>
On Sun, 17 Jan 2010 17:26:53 -0800
"H. Peter Anvin" <hpa@zytor.com> wrote:
> CONFIG_X86_CPU_DEBUG really seems to be causing more problems than it
> ever solved. This is an RFC for immediately deprecating it, and
> schedule it for removal in the 2.6.34 cycle.
>
> If this was a high value feature, it would be different -- but it's not
> even close.
>
> Posting this as an RFC just on the offchance someone actually depends on
> this.
>
We know that enabling this feature will cause some machines to hang,
and that this problem has existed for six months.
Would it not be better to fix that problem (perhaps just with the
revert) so that 2.6.33, 2.6.32.x and earlier can be fixed? Then we can
nuke the feature in 2.6.34.
Alternatively, we can nuke the feature from 2.6.33 and 2.6.32.x and
earlier right now. Where "nuke" might mean "make it difficult to
enable".
Whatever. Bottom line is that it'd be nice to do something to fix up
2.6.33 and earlier.
next prev parent reply other threads:[~2010-01-23 0:56 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-13 18:51 Boot hangs after "Freeing initrd memory" with 2.6.31.11 Ozan Çağlayan
2010-01-14 6:58 ` Ozan Çağlayan
2010-01-14 7:43 ` Yinghai Lu
2010-01-14 7:48 ` Ozan Çağlayan
2010-01-14 10:35 ` Ozan Çağlayan
2010-01-14 13:08 ` Ozan Çağlayan
2010-01-14 13:36 ` Ozan Çağlayan
2010-01-16 12:28 ` Ozan Çağlayan
2010-01-16 22:12 ` Rafael J. Wysocki
2010-01-17 8:43 ` Ozan Çağlayan
2010-01-17 13:43 ` Rafael J. Wysocki
2010-01-17 9:22 ` Ozan Çağlayan
2010-01-17 13:44 ` Rafael J. Wysocki
2010-01-18 1:26 ` RFC: deprecate CONFIG_X86_CPU_DEBUG and schedule it for rapid removal H. Peter Anvin
2010-01-18 21:28 ` Rafael J. Wysocki
2010-01-23 0:53 ` Andrew Morton [this message]
2010-01-23 1:05 ` H. Peter Anvin
2010-01-23 1:20 ` [stable] " Greg KH
2010-01-23 1:51 ` H. Peter Anvin
2010-01-23 1:59 ` Linus Torvalds
2010-01-23 5:22 ` Ingo Molnar
2010-01-18 0:58 ` Boot hangs after "Freeing initrd memory" with 2.6.31.11 H. Peter Anvin
-- strict thread matches above, loose matches on Subject: below --
2010-01-23 2:34 RFC: deprecate CONFIG_X86_CPU_DEBUG and schedule it for rapid removal H. Peter Anvin
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