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From: "Chris Friesen" <cfriesen@nortel.com>
To: Bill Davidsen <davidsen@tmr.com>
Cc: Frans Pop <elendil@planet.nl>,
	tglx@linutronix.de, george.dunlap@eu.citrix.com,
	davem@davemloft.net, jeremy@goop.org, mingo@elte.hu,
	dan.magenheimer@oracle.com, avi@redhat.com,
	xen-devel@lists.xensource.com, x86@kernel.org,
	linux-kernel@vger.kernel.org, Keir.Fraser@eu.citrix.com,
	torvalds@linux-foundation.org, gregkh@suse.de,
	kurt.hackel@oracle.com, Ian.Pratt@eu.citrix.com,
	xen-users@lists.xensource.com, ksrinivasan@novell.com,
	EAnderson@novell.com, wimcoekaerts@wimmekes.net,
	stephen.spector@citrix.com, jens.axboe@oracle.com
Subject: Re: Xen is a feature
Date: Thu, 04 Jun 2009 22:55:28 -0600	[thread overview]
Message-ID: <4A28A540.2000306@nortel.com> (raw)
In-Reply-To: <4A289B96.7030808@tmr.com>

Bill Davidsen wrote:

> Where it comes from is his very recent statement, which contains those 
> very words. You may interpret what he said in any way you choose, but 
> denying that he said it shows that you didn't follow the link back. I 
> never denied the ugliness of the code, nor does the author, but it adds 
> a great deal of value for many people, and that's the point I was making.

Lots of code could be said to add a great deal of value for many people
(semi-closed video card drivers, ndiswrapper, etc.), but it's never
going to be accepted into the kernel.

The maintainers get to decide whether the perceived benefit outweighs
the perceived cost.  So far, they've decided that Xen isn't worth it.

The most likely way to get Xen merged is to lower the cost (reduce the
churn and ugliness), increase the benefit (improve the virtualization
layer, thus cleaning up other code as well), or both.

Chris

  reply	other threads:[~2009-06-05  4:55 UTC|newest]

Thread overview: 108+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-12 23:25 [GIT PULL] Xen APIC hooks (with io_apic_ops) Jeremy Fitzhardinge
2009-05-12 23:25 ` [PATCH 01/17] xen/dom0: handle acpi lapic parsing in Xen dom0 Jeremy Fitzhardinge
2009-05-12 23:25 ` [PATCH 02/17] x86: add io_apic_ops to allow interception Jeremy Fitzhardinge
2009-05-25  3:54   ` Ingo Molnar
2009-05-27  7:17     ` Jeremy Fitzhardinge
2009-05-12 23:25 ` [PATCH 03/17] xen: implement io_apic_ops Jeremy Fitzhardinge
2009-05-12 23:25 ` [PATCH 04/17] xen: create dummy ioapic mapping Jeremy Fitzhardinge
2009-05-12 23:25 ` [PATCH 05/17] xen: implement pirq type event channels Jeremy Fitzhardinge
2009-05-12 23:25 ` [PATCH 06/17] x86/io_apic: add get_nr_irqs_gsi() Jeremy Fitzhardinge
2009-05-12 23:25 ` [PATCH 07/17] xen/apic: identity map gsi->irqs Jeremy Fitzhardinge
2009-05-12 23:25 ` [PATCH 08/17] xen: direct irq registration to pirq event channels Jeremy Fitzhardinge
2009-05-12 23:25 ` [PATCH 09/17] xen: bind pirq to vector and event channel Jeremy Fitzhardinge
2009-05-12 23:25 ` [PATCH 10/17] xen: pre-initialize legacy irqs early Jeremy Fitzhardinge
2009-05-12 23:25 ` [PATCH 11/17] xen: don't setup acpi interrupt unless there is one Jeremy Fitzhardinge
2009-05-12 23:25 ` [PATCH 12/17] xen: use acpi_get_override_irq() to get triggering for legacy irqs Jeremy Fitzhardinge
2009-05-12 23:25 ` [PATCH 13/17] xen: initialize irq 0 too Jeremy Fitzhardinge
2009-05-12 23:25 ` [PATCH 14/17] xen: dynamically allocate irq & event structures Jeremy Fitzhardinge
2009-05-12 23:25 ` [PATCH 15/17] xen: set pirq name to something useful Jeremy Fitzhardinge
2009-05-12 23:25 ` [PATCH 16/17] xen: fix legacy irq setup, make ioapic-less machines work Jeremy Fitzhardinge
2009-05-12 23:25 ` [PATCH 17/17] xen: disable MSI Jeremy Fitzhardinge
2009-05-19 12:35 ` [GIT PULL] Xen APIC hooks (with io_apic_ops) Ingo Molnar
2009-05-20 17:57   ` Jeremy Fitzhardinge
2009-05-25  4:10     ` Ingo Molnar
2009-05-26 12:46       ` [Xen-devel] " George Dunlap
2009-05-26 18:26         ` Avi Kivity
2009-05-26 19:18           ` Dan Magenheimer
2009-05-26 19:41             ` Avi Kivity
2009-05-28  0:13             ` Ingo Molnar
2009-05-28  0:49               ` Jeremy Fitzhardinge
2009-05-28  3:47               ` Dan Magenheimer
2009-05-28 14:26               ` George Dunlap
2009-05-29  0:45               ` Xen is a feature Jeremy Fitzhardinge
2009-05-29  1:27                 ` Greg KH
2009-05-29  4:05                 ` David Miller
2009-05-29  6:37                   ` Jaswinder Singh Rajput
2009-05-29  6:51                     ` David Miller
2009-05-29 12:01                   ` George Dunlap
2009-05-29 14:14                     ` Pasi Kärkkäinen
2009-05-29 21:29                       ` David Miller
     [not found]                     ` <87tz33ep1b.fsf@basil.nowhere.org>
2009-05-29 21:31                       ` [Xen-devel] " Jeremy Fitzhardinge
2009-05-29 23:09                       ` Nakajima, Jun
2009-05-29 23:26                         ` Jeremy Fitzhardinge
2009-06-02 15:23                     ` Thomas Gleixner
2009-06-02 16:41                       ` George Dunlap
2009-06-02 17:28                         ` Chris Friesen
2009-06-02 17:46                         ` Linus Torvalds
2009-06-02 18:02                           ` Linus Torvalds
2009-06-02 18:59                             ` Avi Kivity
2009-06-07  9:13                               ` Ingo Molnar
2009-06-07 10:01                                 ` Avi Kivity
2009-06-07 10:35                                   ` Ingo Molnar
2009-06-07 12:46                                     ` Avi Kivity
2009-06-07 13:02                                       ` Jaswinder Singh Rajput
2009-06-04 14:02                           ` [Xen-users] " Thomas Goirand
2009-06-02 18:59                         ` Thomas Gleixner
2009-06-03 19:49                       ` Bill Davidsen
2009-06-03 20:20                         ` Thomas Gleixner
2009-06-03 22:37                           ` Bill Davidsen
2009-06-03 23:29                             ` Frans Pop
2009-06-04 13:21                               ` George Dunlap
2009-06-04 15:10                                 ` Theodore Tso
2009-06-04 15:31                                 ` Chris Friesen
2009-06-05  4:14                               ` Bill Davidsen
2009-06-05  4:55                                 ` Chris Friesen [this message]
2009-06-02 22:40                     ` Steven Rostedt
2009-06-02 23:28                       ` Merge Xen (the hypervisor) into Linux Ingo Molnar
2009-06-03  0:00                         ` Dan Magenheimer
2009-06-03  0:32                           ` Thomas Gleixner
2009-06-03  2:43                           ` Theodore Tso
2009-06-03  3:42                             ` Steven Rostedt
2009-06-03  4:49                               ` Dan Magenheimer
2009-06-03  4:58                                 ` David Miller
2009-06-03  5:07                                   ` Steven Rostedt
2009-06-03  5:22                                 ` Steven Rostedt
2009-06-03 12:03                                   ` George Dunlap
2009-06-03 19:05                                     ` Theodore Tso
     [not found]                                       ` <4A27CF94.1050903@gmx.de>
2009-06-04 14:03                                         ` [Xen-users] " Steven Rostedt
2009-06-03  7:28                             ` Gerd Hoffmann
2009-06-03  8:47                               ` Alan Cox
2009-06-03  9:09                                 ` Gerd Hoffmann
2009-06-03  9:20                                   ` Keir Fraser
2009-06-03 11:15                                   ` Theodore Tso
2009-06-03 11:39                                     ` Keir Fraser
2009-06-03 11:41                                     ` Gerd Hoffmann
2009-06-03  1:00                         ` Joel Becker
2009-06-03  2:00                           ` david
2009-06-03  7:59                           ` Alan Cox
2009-06-03  8:07                         ` Christian Tramnitz
2009-06-04 18:53                           ` Linus Torvalds
2009-06-05  0:09                             ` Samuel Thibault
2009-06-05  0:18                               ` David Miller
2009-06-05  0:54                               ` Linus Torvalds
2009-06-03 17:31                         ` Chris Friesen
2009-06-03 17:36                           ` Alan Cox
2009-06-02 23:41                       ` Xen is a feature Thomas Gleixner
2009-05-30  2:19                 ` [Xen-devel] " Andy Burns
2009-05-26 21:19         ` [Xen-devel] Re: [GIT PULL] Xen APIC hooks (with io_apic_ops) Gerd Hoffmann
2009-05-27 10:14           ` George Dunlap
2009-05-24 20:10   ` Avi Kivity
2009-05-25  3:51     ` Ingo Molnar
2009-05-25  4:55       ` Avi Kivity
2009-05-25  5:06         ` Ingo Molnar
2009-05-25  5:12           ` Avi Kivity
2009-05-25  5:19             ` Ingo Molnar
  -- strict thread matches above, loose matches on Subject: below --
2009-05-29 11:48 Xen is a feature Tomasz Chmielewski
2009-05-29 13:08 Sander Eikelenboom
2009-05-31 21:11 devzero
2009-06-02 22:44 Sander Eikelenboom

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