From: Zachary Amsden <zach@vmware.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Andi Kleen <ak@suse.de>, Jeremy Fitzhardinge <jeremy@goop.org>,
tglx@linutronix.de, john stultz <johnstul@us.ibm.com>,
akpm@linux-foundation.org,
Linus Torvalds <torvalds@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Pratap Subrahmanyam <pratap@vmware.com>,
Rusty Russell <rusty@rustcorp.com.au>,
Daniel Hecht <dhecht@vmware.com>, Daniel Arai <arai@vmware.com>,
Chris Wright <chrisw@sous-sol.org>
Subject: Re: hardwired VMI crap
Date: Thu, 08 Mar 2007 14:36:20 -0800 [thread overview]
Message-ID: <45F08FE4.5090909@vmware.com> (raw)
In-Reply-To: <20070308223041.GB30113@elte.hu>
Ingo Molnar wrote:
>
>> [...] And apparently the VMI version is the same, just with some short
>> cuts. Are you just worried about the ->apic_write() hooks or about
>> something else too?
>>
>
> i'm worried about those "shot cuts" (which in essence create software
> variants of silicon), the hooks, the hardwirings combined with the
> hypervisor-side ABIs creating a rigid mess that is harmful to Linux.
> paravirt_ops and the hooks gives a license for all hypervisor 'backends'
> to deviate into random arbitrary directions and to create all their
> separate 'virtual silicon' playgrounds with no regard to Linux
> maintainability. And once this gets released, Linux has no choice but to
> play along.
>
What? And creating a high level API which allows you to implement
totally random silicon with oodles of quirks and obfuscated
implementation requirements creates more maintainability how? We tried
to stay as close as possible to the hardware ABI on purpose,
specifically so we don't need to introduce 100 new concepts into the kernel.
Zaccch
next prev parent reply other threads:[~2007-03-08 22:36 UTC|newest]
Thread overview: 114+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200703060654.l266sVxr014860@shell0.pdx.osdl.net>
[not found] ` <45ED16D2.3000202@vmware.com>
[not found] ` <20070306084258.GA15745@elte.hu>
[not found] ` <20070306084647.GA16280@elte.hu>
[not found] ` <45ED2C82.3080008@vmware.com>
2007-03-06 10:59 ` + stupid-hack-to-make-mainline-build.patch added to -mm tree Thomas Gleixner
2007-03-06 21:07 ` Dan Hecht
2007-03-06 22:21 ` Andi Kleen
2007-03-06 21:32 ` Dan Hecht
2007-03-06 23:53 ` Thomas Gleixner
2007-03-07 0:24 ` Jeremy Fitzhardinge
2007-03-07 0:35 ` Dan Hecht
2007-03-07 0:49 ` Thomas Gleixner
2007-03-07 0:53 ` Dan Hecht
2007-03-07 1:18 ` Thomas Gleixner
2007-03-07 2:08 ` Dan Hecht
2007-03-07 8:37 ` Thomas Gleixner
2007-03-07 17:41 ` Jeremy Fitzhardinge
2007-03-07 17:49 ` Ingo Molnar
2007-03-07 18:03 ` James Morris
2007-03-07 18:35 ` Jeremy Fitzhardinge
2007-03-08 0:45 ` Alan Cox
2007-03-07 17:52 ` Ingo Molnar
2007-03-07 18:28 ` Jeremy Fitzhardinge
2007-03-07 18:53 ` Thomas Gleixner
2007-03-07 18:11 ` James Morris
2007-03-07 18:56 ` Thomas Gleixner
2007-03-07 19:05 ` Jeremy Fitzhardinge
2007-03-07 19:49 ` Dan Hecht
2007-03-07 20:11 ` Jeremy Fitzhardinge
2007-03-07 20:49 ` Dan Hecht
2007-03-07 21:14 ` Thomas Gleixner
2007-03-07 20:57 ` Thomas Gleixner
2007-03-07 21:02 ` Dan Hecht
2007-03-07 21:08 ` Jeremy Fitzhardinge
2007-03-07 21:19 ` Thomas Gleixner
2007-03-07 21:14 ` Dan Hecht
2007-03-07 21:21 ` Thomas Gleixner
2007-03-07 21:33 ` Dan Hecht
2007-03-07 22:05 ` Jeremy Fitzhardinge
2007-03-07 23:05 ` Thomas Gleixner
2007-03-07 23:25 ` Zachary Amsden
2007-03-07 23:36 ` Jeremy Fitzhardinge
2007-03-07 23:40 ` Zachary Amsden
2007-03-08 18:30 ` Chris Wright
2007-03-08 0:22 ` Thomas Gleixner
2007-03-08 1:01 ` Daniel Arai
2007-03-08 1:23 ` Jeremy Fitzhardinge
2007-03-08 7:02 ` Thomas Gleixner
2007-03-08 7:28 ` Thomas Gleixner
2007-03-08 8:01 ` Zachary Amsden
2007-03-08 18:24 ` Chris Wright
2007-03-08 18:44 ` Daniel Arai
2007-03-08 19:14 ` Chris Wright
2007-03-08 19:17 ` Ingo Molnar
2007-03-08 19:42 ` Jeremy Fitzhardinge
2007-03-08 19:47 ` Chris Wright
2007-03-08 19:52 ` Jeremy Fitzhardinge
2007-03-08 20:10 ` Chris Wright
2007-03-08 20:18 ` Jeremy Fitzhardinge
2007-03-08 20:23 ` Chris Wright
2007-03-08 20:33 ` Jeremy Fitzhardinge
2007-03-08 20:42 ` Chris Wright
2007-03-08 20:42 ` Jeremy Fitzhardinge
2007-03-08 21:45 ` Andi Kleen
2007-03-08 19:54 ` Ingo Molnar
2007-03-08 9:10 ` hardwired VMI crap Ingo Molnar
2007-03-08 10:06 ` Zachary Amsden
2007-03-08 11:09 ` Thomas Gleixner
2007-03-08 20:46 ` Zachary Amsden
2007-03-08 21:13 ` Ingo Molnar
2007-03-08 22:17 ` Zachary Amsden
2007-03-08 22:33 ` Ingo Molnar
2007-03-08 22:39 ` Zachary Amsden
2007-03-16 10:12 ` Pavel Machek
2007-03-08 21:15 ` Jeremy Fitzhardinge
2007-03-08 21:34 ` Ingo Molnar
2007-03-08 21:43 ` Andi Kleen
2007-03-08 22:30 ` Ingo Molnar
2007-03-08 22:36 ` Zachary Amsden [this message]
2007-03-08 23:39 ` Jeremy Fitzhardinge
2007-03-08 23:55 ` Zachary Amsden
2007-03-09 0:10 ` Jeremy Fitzhardinge
2007-03-09 0:29 ` Linus Torvalds
2007-03-09 0:22 ` Daniel Walker
2007-03-09 0:28 ` Thomas Gleixner
2007-03-09 0:04 ` Thomas Gleixner
2007-03-09 0:44 ` Jeremy Fitzhardinge
2007-03-08 22:31 ` Zachary Amsden
2007-03-08 21:39 ` Andi Kleen
2007-03-08 22:58 ` Zachary Amsden
2007-03-08 22:42 ` Ingo Molnar
2007-03-08 23:39 ` Zachary Amsden
2007-03-08 18:35 ` Chris Wright
2007-03-07 23:33 ` + stupid-hack-to-make-mainline-build.patch added to -mm tree Jeremy Fitzhardinge
2007-03-07 23:52 ` Dan Hecht
2007-03-08 0:19 ` Jeremy Fitzhardinge
2007-03-08 0:35 ` Thomas Gleixner
2007-03-08 0:38 ` Jeremy Fitzhardinge
2007-03-07 20:40 ` Thomas Gleixner
2007-03-07 21:07 ` Jeremy Fitzhardinge
2007-03-07 21:40 ` Thomas Gleixner
2007-03-07 21:34 ` Dan Hecht
2007-03-07 22:14 ` Thomas Gleixner
2007-03-07 22:17 ` Zachary Amsden
2007-03-07 22:31 ` Thomas Gleixner
2007-03-07 22:28 ` Dan Hecht
2007-03-08 8:01 ` Ingo Molnar
2007-03-08 8:15 ` Keir Fraser
2007-03-08 8:41 ` Jeremy Fitzhardinge
2007-03-08 10:26 ` Rusty Russell
2007-03-07 21:42 ` Dan Hecht
2007-03-07 22:07 ` Thomas Gleixner
2007-03-07 5:10 ` Jeremy Fitzhardinge
2007-03-07 0:40 ` Thomas Gleixner
2007-03-07 0:42 ` Dan Hecht
2007-03-07 1:22 ` Thomas Gleixner
2007-03-07 1:44 ` Dan Hecht
2007-03-07 7:48 ` Thomas Gleixner
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