From: Frans Pop <elendil@planet.nl>
To: Bill Davidsen <davidsen@tmr.com>
Cc: 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, 4 Jun 2009 01:29:01 +0200 [thread overview]
Message-ID: <200906040129.07852.elendil@planet.nl> (raw)
In-Reply-To: <4A26FB3B.6010205@tmr.com>
Bill Davidsen wrote:
> I was referring to your "no benefit" comment, I don't dispute the
> technical issues. I think the idea of moving the hypervisor into the
> kernel and letting xen folks do the external parts as they please.
Where does that come from? AFAICT Thomas never made a "no benefit" comment
other than limited to the context of the technical implementation.
I've always understood his meaning in this thread to be: "the proposed
patch set does not improve the technical standard of the linux kernel,
but would instead lower it considerably".
Thomas has been extremely correct in this thread and IMO does not deserve
this attack.
Let's look at his exact comments (emphasis mine).
! The kernel policy always was and still is to accept only those
! features which have a technical benefit **to the code base**.
and
! Aside of the paravirt, which seems to expand through arch/x86 like a
! hydra, the new patches sprinkle "if (xen_...)" all over the
! place. These extra xen dependencies are no improvement, they are a
! royal pain in the ...
Also clearly limited to technical implementation.
! I really have a hard time to see why dom0 support makes Linux more
! useful **to people who do not use it**. It does not improve the Linux
! experience **of Joe User** at all.
Or has Thomas made some "no benefit" comment I've missed?
Cheers,
FJP
next prev parent reply other threads:[~2009-06-03 23:29 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 [this message]
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
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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