From: Ingo Molnar <mingo@elte.hu>
To: Jeremy Fitzhardinge <jeremy@goop.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Yinghai Lu <yinghai@kernel.org>,
Suresh Siddha <suresh.b.siddha@intel.com>,
"Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>,
Arjan van de Ven <arjan@infradead.org>
Cc: the arch/x86 maintainers <x86@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Xen-devel <xen-devel@lists.xensource.com>,
Ian Campbell <ian.campbell@citrix.com>,
Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Subject: Re: [PATCH 06/16] xen: disable PAT
Date: Fri, 8 May 2009 13:14:32 +0200 [thread overview]
Message-ID: <20090508111432.GF11596@elte.hu> (raw)
In-Reply-To: <1241730653-4688-7-git-send-email-jeremy@goop.org>
* Jeremy Fitzhardinge <jeremy@goop.org> wrote:
> From: Ian Campbell <ian.campbell@citrix.com>
>
> Impact: disable PAT under Xen
>
> Xen imposes a particular PAT layout on all paravirtual guests which
> does not match the layout Linux would like to use.
>
> Force PAT to be disabled until this is resolved.
>
> Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
hm, what will the resolution be? Every step in the direction of
making Xen guests more special is a step in the wrong direction.
Coupling between Xen and Linux should be reduced, not increased.
Ingo
WARNING: multiple messages have this Message-ID (diff)
From: Ingo Molnar <mingo@elte.hu>
To: Jeremy Fitzhardinge <jeremy@goop.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Yinghai Lu <yinghai@kernel.org>,
Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Xen-devel <xen-devel@lists.xensource.com>,
the arch/x86 maintainers <x86@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>,
Ian Campbell <ian.campbell@citrix.com>
Subject: Re: [PATCH 06/16] xen: disable PAT
Date: Fri, 8 May 2009 13:14:32 +0200 [thread overview]
Message-ID: <20090508111432.GF11596@elte.hu> (raw)
In-Reply-To: <1241730653-4688-7-git-send-email-jeremy@goop.org>
* Jeremy Fitzhardinge <jeremy@goop.org> wrote:
> From: Ian Campbell <ian.campbell@citrix.com>
>
> Impact: disable PAT under Xen
>
> Xen imposes a particular PAT layout on all paravirtual guests which
> does not match the layout Linux would like to use.
>
> Force PAT to be disabled until this is resolved.
>
> Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
hm, what will the resolution be? Every step in the direction of
making Xen guests more special is a step in the wrong direction.
Coupling between Xen and Linux should be reduced, not increased.
Ingo
next prev parent reply other threads:[~2009-05-08 11:16 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-07 21:10 [GIT PULL] xen: core dom0 support Jeremy Fitzhardinge
2009-05-07 21:10 ` Jeremy Fitzhardinge
2009-05-07 21:10 ` [PATCH 01/16] xen dom0: Make hvc_xen console work for dom0 Jeremy Fitzhardinge
2009-05-07 21:10 ` Jeremy Fitzhardinge
2009-05-07 21:10 ` [PATCH 02/16] xen dom0: Initialize xenbus " Jeremy Fitzhardinge
2009-05-07 21:10 ` Jeremy Fitzhardinge
2009-05-07 21:10 ` [PATCH 03/16] xen dom0: Set up basic IO permissions " Jeremy Fitzhardinge
2009-05-07 21:10 ` Jeremy Fitzhardinge
2009-05-07 21:10 ` [PATCH 04/16] xen dom0: Add support for the platform_ops hypercall Jeremy Fitzhardinge
2009-05-07 21:10 ` Jeremy Fitzhardinge
2009-05-07 21:10 ` [PATCH 05/16] xen mtrr: Add mtrr_ops support for Xen mtrr Jeremy Fitzhardinge
2009-05-07 21:10 ` Jeremy Fitzhardinge
2009-05-08 11:17 ` Ingo Molnar
2009-05-08 11:17 ` Ingo Molnar
2009-05-07 21:10 ` [PATCH 06/16] xen: disable PAT Jeremy Fitzhardinge
2009-05-07 21:10 ` Jeremy Fitzhardinge
2009-05-08 11:14 ` Ingo Molnar [this message]
2009-05-08 11:14 ` Ingo Molnar
2009-05-08 12:38 ` Ian Campbell
2009-05-08 14:50 ` Alan Cox
2009-05-09 8:04 ` [Xen-devel] " Keir Fraser
2009-05-09 8:04 ` Keir Fraser
2009-05-09 18:36 ` [Xen-devel] " H. Peter Anvin
2009-05-10 9:21 ` Keir Fraser
2009-05-10 9:21 ` Keir Fraser
2009-05-10 13:29 ` [Xen-devel] " Alan Cox
2009-05-10 13:29 ` Alan Cox
2009-05-10 17:34 ` [Xen-devel] " Keir Fraser
2009-05-11 9:09 ` Jan Beulich
2009-05-11 9:48 ` Keir Fraser
2009-05-11 18:05 ` Jeremy Fitzhardinge
2009-05-10 17:55 ` [Xen-devel] " H. Peter Anvin
2009-05-11 11:10 ` Ingo Molnar
2009-05-07 21:10 ` [PATCH 07/16] xen/dom0: use _PAGE_IOMAP in ioremap to do machine mappings Jeremy Fitzhardinge
2009-05-07 21:10 ` Jeremy Fitzhardinge
2009-05-07 21:10 ` [PATCH 08/16] xen/dom0: Use host E820 map Jeremy Fitzhardinge
2009-05-07 21:10 ` Jeremy Fitzhardinge
2009-05-07 21:10 ` [PATCH 09/16] xen: implement XENMEM_machphys_mapping Jeremy Fitzhardinge
2009-05-07 21:10 ` Jeremy Fitzhardinge
2009-05-07 21:10 ` [PATCH 10/16] xen: clear reserved bits in l3 entries given in the initial pagetables Jeremy Fitzhardinge
2009-05-07 21:10 ` Jeremy Fitzhardinge
2009-05-07 21:10 ` [PATCH 11/16] xen: allow enable use of VGA console on dom0 Jeremy Fitzhardinge
2009-05-07 21:10 ` Jeremy Fitzhardinge
2009-05-07 21:10 ` [PATCH 12/16] xen/dom0: add XEN_DOM0 config option Jeremy Fitzhardinge
2009-05-07 21:10 ` Jeremy Fitzhardinge
2009-05-07 21:10 ` [PATCH 13/16] x86: make /dev/mem mappings _PAGE_IOMAP Jeremy Fitzhardinge
2009-05-07 21:10 ` Jeremy Fitzhardinge
2009-05-07 21:10 ` [PATCH 14/16] paravirtualize IO permission bitmap Jeremy Fitzhardinge
2009-05-07 21:10 ` Jeremy Fitzhardinge
2009-05-07 21:10 ` [PATCH 15/16] x86: don't need "changed" parameter for set_io_bitmap() Jeremy Fitzhardinge
2009-05-07 21:10 ` Jeremy Fitzhardinge
2009-05-07 21:10 ` [PATCH 16/16] xen: checkpatch cleanups Jeremy Fitzhardinge
2009-05-07 21:10 ` Jeremy Fitzhardinge
-- strict thread matches above, loose matches on Subject: below --
2009-05-12 21:28 [GIT PULL] xen dom0 core changes Jeremy Fitzhardinge
2009-05-12 21:28 ` [PATCH 06/16] xen: disable PAT Jeremy Fitzhardinge
2009-05-12 21:28 ` Jeremy Fitzhardinge
2009-06-02 15:37 ` Thomas Gleixner
2009-06-03 6:33 ` Jeremy Fitzhardinge
2009-06-03 6:33 ` Jeremy Fitzhardinge
2009-05-27 7:15 [GIT PULL REPOST] xen/dom0/core - core Xen dom0 support changes Jeremy Fitzhardinge
2009-05-27 7:15 ` [PATCH 06/16] xen: disable PAT Jeremy Fitzhardinge
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