From: Ingo Molnar <mingo@elte.hu>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jan Beulich <jbeulich@novell.com>,
linux@sandersweb.net, Andi Kleen <andi-suse@firstfloor.org>,
Arjan van de Ven <arjan@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [BUG] x86 kenel won't boot under Virtual PC
Date: Fri, 5 Sep 2008 20:43:53 +0200 [thread overview]
Message-ID: <20080905184353.GA29496@elte.hu> (raw)
In-Reply-To: <alpine.LFD.1.10.0809050931340.3117@nehalem.linux-foundation.org>
* Linus Torvalds <torvalds@linux-foundation.org> wrote:
> - Move the optimized nop definitions (K7_NOPx etc) to the only place that
> cares - asm/x86/kernel/alternative.c. When we do things _dynamically_,
> it can actually make sense to pick a nop more precisely, but for this
> whole static thing it's just a pain.
>
> IOW, if it actually _worked_ reasonably, I wouldn't care. But clearly
> it doesn't. And once it's not working reasonably, it should be fixed.
yes - we had 3-4 tries already and while it looked worthwile initially
it's clearly not showing signs of getting more robust and whatever
benefits there might be slightly better NOPs is dwarved by all these
robustness problems. Peter?
Ingo
next prev parent reply other threads:[~2008-09-05 18:44 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-31 18:22 [BUG] x86 kenel won't boot under Virtual PC David Sanders
2008-08-31 18:47 ` Linus Torvalds
2008-08-31 19:27 ` Arjan van de Ven
2008-08-31 19:39 ` Linus Torvalds
2008-09-05 15:38 ` David Sanders
2008-09-05 16:15 ` Jan Beulich
2008-09-05 16:39 ` Linus Torvalds
2008-09-05 18:43 ` Ingo Molnar [this message]
2008-09-05 20:06 ` H. Peter Anvin
2008-09-05 19:08 ` Jeremy Fitzhardinge
2008-09-05 20:12 ` H. Peter Anvin
2008-09-05 16:30 ` Linus Torvalds
2008-09-05 17:55 ` Andi Kleen
2008-08-31 20:03 ` David Sanders
2008-09-01 20:23 ` David Sanders
2008-09-01 22:22 ` Linus Torvalds
2008-09-02 12:08 ` David Sanders
2008-09-02 18:12 ` Linus Torvalds
2008-09-02 18:44 ` David Sanders
2008-09-03 11:09 ` Peter Zijlstra
2008-09-03 11:20 ` David Sanders
[not found] ` <48C1C156.9080003@zytor.com>
2008-09-07 20:07 ` David Sanders
2008-09-07 23:22 ` David Sanders
2008-09-08 1:48 ` H. Peter Anvin
2008-09-08 2:49 ` David Sanders
2008-09-08 4:04 ` H. Peter Anvin
2008-09-08 9:42 ` Andi Kleen
2008-09-08 13:25 ` David Sanders
2008-09-08 15:09 ` Linus Torvalds
2008-09-08 15:23 ` Ingo Molnar
2008-09-08 15:36 ` H. Peter Anvin
2008-09-08 15:38 ` David Sanders
2008-09-08 15:38 ` H. Peter Anvin
2008-09-08 15:45 ` Andi Kleen
2008-09-08 15:43 ` H. Peter Anvin
2008-09-08 15:50 ` H. Peter Anvin
2008-09-08 15:50 ` Andi Kleen
2008-09-08 15:50 ` H. Peter Anvin
2008-09-08 15:57 ` Andi Kleen
2008-09-08 15:54 ` H. Peter Anvin
2008-09-08 16:07 ` Linus Torvalds
2008-09-08 16:13 ` H. Peter Anvin
2008-09-08 16:15 ` H. Peter Anvin
2008-09-08 16:26 ` David Sanders
2008-09-08 16:20 ` Linus Torvalds
2008-09-08 16:32 ` H. Peter Anvin
2008-09-08 17:02 ` Ingo Molnar
2008-09-08 16:34 ` david
2008-09-08 16:42 ` H. Peter Anvin
2008-09-08 18:51 ` david
2008-09-08 16:59 ` Linus Torvalds
2008-09-08 17:00 ` Andi Kleen
2008-09-08 17:04 ` Linus Torvalds
2008-09-08 17:08 ` H. Peter Anvin
2008-09-08 17:12 ` H. Peter Anvin
2008-09-08 17:41 ` Linus Torvalds
2008-09-08 17:38 ` Linus Torvalds
2008-09-08 17:59 ` H. Peter Anvin
2008-09-08 19:09 ` H. Peter Anvin
2008-09-08 22:42 ` Linus Torvalds
2008-09-08 17:18 ` Andi Kleen
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