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From: Ingo Molnar <mingo@elte.hu>
To: Jeff Garzik <jeff@garzik.org>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	"H. Peter Anvin" <hpa@linux.intel.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 00/14] convert voyager over to the x86 quirks model
Date: Mon, 20 Apr 2009 02:38:57 +0200	[thread overview]
Message-ID: <20090420003857.GA10438@elte.hu> (raw)
In-Reply-To: <49EBB9D0.6060307@garzik.org>


* Jeff Garzik <jeff@garzik.org> wrote:

>> Regarding the new x86/Voyager submission: architecture or core 
>> kernel level code always has a higher barrier of entry than 
>> driver code for a number of good reasons:
>
> No, my point is that it is blatantly unfair to remove code, then 
> reset standards for inclusion far, far higher than at which it 
> left the tree.

Oh, i'm all for including new code optimistically. (in fact i'm 
probably a bit over-inclusive)

But i'm not at all for easily re-including known problematic code 
that has been removed. Including known problematic code under the 
same standard as removal i'd call 'very stupid'.

IMO it is a fundamentally good engineering practice to learn from 
past experience and to learn from past mistakes and to require a 
higher standard if an old standard failed to produce an acceptable 
result first time around.

_Especially_ so for such an extremely obsolete piece of hardware 
with a single upstream user+developer and a dismal upstream track 
record ... We really have to learn to say 'no' at a certain point
...

I dont care about Voyager that much - but i do care about not doing 
stupid things intentionally in the code i (co-)maintain.

Anyway, as i said it in the previous mail - in the end it's up to 
Linus and he can override our NAK if we are wrong about it.

	Ingo

  reply	other threads:[~2009-04-20  0:40 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-14 15:51 [PATCH 00/14] convert voyager over to the x86 quirks model James Bottomley
2009-04-14 15:51 ` [PATCH 01/14] [VOYAGER] x86: add {safe,hard}_smp_processor_id to smp_ops James Bottomley
2009-04-14 15:51   ` [PATCH 02/14] [VOYAGER] x86/mca: make mca_nmi_hook external James Bottomley
2009-04-14 15:51     ` [PATCH 03/14] [VOYAGER] x86: add prefill_possible_map to x86_quirks James Bottomley
2009-04-14 15:51       ` [PATCH 04/14] [VOYAGER] x86: use boot_cpu_id instead of zero for checking boot processor James Bottomley
2009-04-14 15:51         ` [PATCH 05/14] [VOYAGER] x86/voyager: Move voyager detection to a new bootparam area James Bottomley
2009-04-14 15:51           ` [PATCH 06/14] [VOYAGER] x86: eliminate subarchitecture file setup_arch.h James Bottomley
2009-04-14 15:51             ` [PATCH 07/14] [VOYAGER] x86: eliminate subarchitecture file entry_arch.h James Bottomley
2009-04-14 15:51               ` [PATCH 08/14] [VOYAGER] x86: eliminate subarchitecture file do_timer.h James Bottomley
2009-04-14 15:51                 ` [PATCH 09/14] [VOYAGER] x86: redo irq2 cascade setup James Bottomley
2009-04-14 15:51                   ` [PATCH 10/14] [VOYAGER] x86: make disabling the apics functional instead of a flag James Bottomley
2009-04-14 15:51                     ` [PATCH 11/14] [VOYAGER] x86/Voyager: add missing QIC call function single gate James Bottomley
2009-04-14 15:51                       ` [PATCH 12/14] [VOYAGER] x86/Voyager: replace inline io area reads with readX accessors James Bottomley
2009-04-14 15:51                         ` [PATCH 13/14] [VOYAGER] x86/voyager: remove direct use of pg0 in favour of early_ioremap() James Bottomley
2009-04-14 15:51                           ` [PATCH 14/14] [VOYAGER] x86/Voyager: Plumb voyager back into the build James Bottomley
2009-04-14 17:09                     ` [PATCH 10/14] [VOYAGER] x86: make disabling the apics functional instead of a flag Cyrill Gorcunov
2009-04-14 17:44                       ` Cyrill Gorcunov
2009-04-15 12:51                         ` James Bottomley
2009-04-15 14:12                           ` Cyrill Gorcunov
2009-04-14 16:31   ` [PATCH 01/14] [VOYAGER] x86: add {safe,hard}_smp_processor_id to smp_ops Cyrill Gorcunov
2009-04-14 16:54     ` James Bottomley
2009-04-14 16:35   ` Jeremy Fitzhardinge
2009-04-14 16:57     ` James Bottomley
2009-04-14 16:27 ` [PATCH 00/14] convert voyager over to the x86 quirks model Joe Perches
2009-04-14 16:57 ` Ingo Molnar
2009-04-14 18:08   ` Ingo Molnar
2009-04-14 23:12     ` James Bottomley
2009-04-15 15:35       ` Ingo Molnar
2009-04-16 21:06         ` James Bottomley
2009-04-16 20:54     ` Jeff Garzik
2009-04-19 23:35       ` Ingo Molnar
2009-04-19 23:54         ` Jeff Garzik
2009-04-20  0:38           ` Ingo Molnar [this message]
2009-04-20 16:59         ` James Bottomley

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