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From: Avi Kivity <avi@redhat.com>
To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Anthony Perard <anthony.perard@citrix.com>,
	Jan Kiszka <jan.kiszka@siemens.com>,
	Xen Devel <xen-devel@lists.xensource.com>,
	QEMU-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] early_savevm
Date: Sun, 18 Dec 2011 19:43:31 +0200	[thread overview]
Message-ID: <4EEE2643.1070504@redhat.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1112131141170.3517@kaball-desktop>

On 12/13/2011 01:55 PM, Stefano Stabellini wrote:
> A bit more context to my suggestion:
>
> - we open the save state file and check the magic number and the
> version number before machine->init();
>
> - we add a new set of entries to the save state file that contains
> early_savevm functions: they are called before machine->init();
>
> - after reaching the end of the early_savevm functions we stop parsing
> the save state file and we call machine->init();
>
> - after machine->init() is completed we continue parsing the save state
> file as usual.

I think this is fragile.  In the general case you can't describe the
framebuffer BAR with just a single number, it may be partially obscured
by another BAR.  It's better to fix this behind the scenes.

-- 
error compiling committee.c: too many arguments to function

WARNING: multiple messages have this Message-ID (diff)
From: Avi Kivity <avi@redhat.com>
To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Anthony Perard <anthony.perard@citrix.com>,
	Jan Kiszka <jan.kiszka@siemens.com>,
	Xen Devel <xen-devel@lists.xensource.com>,
	QEMU-devel <qemu-devel@nongnu.org>
Subject: Re: early_savevm
Date: Sun, 18 Dec 2011 19:43:31 +0200	[thread overview]
Message-ID: <4EEE2643.1070504@redhat.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1112131141170.3517@kaball-desktop>

On 12/13/2011 01:55 PM, Stefano Stabellini wrote:
> A bit more context to my suggestion:
>
> - we open the save state file and check the magic number and the
> version number before machine->init();
>
> - we add a new set of entries to the save state file that contains
> early_savevm functions: they are called before machine->init();
>
> - after reaching the end of the early_savevm functions we stop parsing
> the save state file and we call machine->init();
>
> - after machine->init() is completed we continue parsing the save state
> file as usual.

I think this is fragile.  In the general case you can't describe the
framebuffer BAR with just a single number, it may be partially obscured
by another BAR.  It's better to fix this behind the scenes.

-- 
error compiling committee.c: too many arguments to function

  parent reply	other threads:[~2011-12-18 17:43 UTC|newest]

Thread overview: 107+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-09 21:54 [Qemu-devel] [PATCH V2 0/5] Have a working migration with Xen Anthony PERARD
2011-12-09 21:54 ` Anthony PERARD
2011-12-09 21:54 ` [Qemu-devel] [PATCH V2 1/5] vl.c: Do not save RAM state when Xen is used Anthony PERARD
2011-12-09 21:54   ` Anthony PERARD
2011-12-15 15:12   ` [Qemu-devel] " Anthony Liguori
2011-12-15 15:12     ` Anthony Liguori
2011-12-18 17:44     ` [Qemu-devel] " Avi Kivity
2011-12-18 17:44       ` Avi Kivity
2011-12-20 16:46       ` [Qemu-devel] " Anthony PERARD
2011-12-20 16:46         ` Anthony PERARD
2011-12-09 21:54 ` [Qemu-devel] [PATCH V2 2/5] xen mapcache: Check if a memory space has moved Anthony PERARD
2011-12-09 21:54   ` Anthony PERARD
2011-12-12 12:53   ` [Qemu-devel] " Stefano Stabellini
2011-12-12 12:53     ` Stefano Stabellini
2011-12-09 21:54 ` [Qemu-devel] [PATCH V2 3/5] Introduce premigrate RunState Anthony PERARD
2011-12-09 21:54   ` Anthony PERARD
2011-12-15 15:14   ` [Qemu-devel] " Anthony Liguori
2011-12-15 15:14     ` Anthony Liguori
2011-12-15 16:31     ` [Qemu-devel] " Luiz Capitulino
2011-12-15 16:31       ` Luiz Capitulino
2011-12-19 17:27       ` [Qemu-devel] " Anthony PERARD
2011-12-19 17:27         ` Anthony PERARD
2012-01-03 19:05         ` [Qemu-devel] " Luiz Capitulino
2012-01-03 19:05           ` Luiz Capitulino
2012-01-05 12:26           ` [Qemu-devel] " Anthony PERARD
2012-01-05 12:26             ` Anthony PERARD
2011-12-09 21:54 ` [Qemu-devel] [PATCH V2 4/5] xen: Change memory access behavior during migration Anthony PERARD
2011-12-09 21:54   ` Anthony PERARD
2011-12-12 12:55   ` [Qemu-devel] " Stefano Stabellini
2011-12-12 12:55     ` Stefano Stabellini
2011-12-09 21:54 ` [Qemu-devel] [PATCH V2 5/5] vga-cirrus: Workaround during restore when using Xen Anthony PERARD
2011-12-09 21:54   ` Anthony PERARD
2011-12-10 10:45   ` [Qemu-devel] " Jan Kiszka
2011-12-10 10:45     ` Jan Kiszka
2011-12-12 13:18     ` [Qemu-devel] " Stefano Stabellini
2011-12-12 13:18       ` Stefano Stabellini
2011-12-12 14:03       ` [Qemu-devel] " Jan Kiszka
2011-12-12 14:03         ` Jan Kiszka
2011-12-12 14:41         ` [Qemu-devel] " Stefano Stabellini
2011-12-12 14:41           ` Stefano Stabellini
2011-12-12 15:03           ` [Qemu-devel] " Jan Kiszka
2011-12-12 15:03             ` Jan Kiszka
2011-12-12 15:32             ` [Qemu-devel] " Stefano Stabellini
2011-12-12 15:32               ` Stefano Stabellini
2011-12-13 11:55               ` [Qemu-devel] early_savevm (was: [PATCH V2 5/5] vga-cirrus: Workaround during restore when using Xen.) Stefano Stabellini
2011-12-13 11:55                 ` Stefano Stabellini
2011-12-13 12:35                 ` [Qemu-devel] early_savevm Jan Kiszka
2011-12-13 12:35                   ` early_savevm Jan Kiszka
2011-12-13 13:59                   ` [Qemu-devel] early_savevm Stefano Stabellini
2011-12-13 13:59                     ` early_savevm Stefano Stabellini
2011-12-18 17:43                 ` Avi Kivity [this message]
2011-12-18 17:43                   ` early_savevm Avi Kivity
2012-01-11 17:55                 ` [Qemu-devel] early_savevm Anthony Liguori
2011-12-18 17:41               ` [Qemu-devel] [PATCH V2 5/5] vga-cirrus: Workaround during restore when using Xen Avi Kivity
2011-12-18 17:41                 ` Avi Kivity
2012-01-04 16:38                 ` [Qemu-devel] " Stefano Stabellini
2012-01-04 16:38                   ` Stefano Stabellini
2012-01-04 17:23                   ` [Qemu-devel] " Avi Kivity
2012-01-04 17:23                     ` Avi Kivity
2012-01-05 12:30                     ` [Qemu-devel] " Stefano Stabellini
2012-01-05 12:30                       ` Stefano Stabellini
2012-01-05 12:50                       ` [Qemu-devel] " Avi Kivity
2012-01-05 12:50                         ` Avi Kivity
2012-01-05 13:17                         ` [Qemu-devel] " Stefano Stabellini
2012-01-05 13:17                           ` Stefano Stabellini
2012-01-05 13:32                           ` [Qemu-devel] " Avi Kivity
2012-01-05 13:32                             ` Avi Kivity
2012-01-05 14:34                             ` [Qemu-devel] " Stefano Stabellini
2012-01-05 14:34                               ` Stefano Stabellini
2012-01-05 15:19                               ` [Qemu-devel] " Avi Kivity
2012-01-05 15:19                                 ` Avi Kivity
2012-01-05 15:53                                 ` [Qemu-devel] " Stefano Stabellini
2012-01-05 15:53                                   ` Stefano Stabellini
2012-01-05 16:33                                   ` [Qemu-devel] " Avi Kivity
2012-01-05 16:33                                     ` Avi Kivity
2012-01-05 17:21                                     ` [Qemu-devel] " Stefano Stabellini
2012-01-05 17:21                                       ` Stefano Stabellini
2012-01-05 17:50                                       ` [Qemu-devel] " Avi Kivity
2012-01-05 17:50                                         ` Avi Kivity
2012-01-05 18:49                                         ` [Qemu-devel] " Jan Kiszka
2012-01-05 18:49                                           ` Jan Kiszka
2012-01-06 10:50                                           ` [Qemu-devel] " Stefano Stabellini
2012-01-06 10:50                                             ` Stefano Stabellini
2012-01-06 13:30                                             ` [Qemu-devel] " Jan Kiszka
2012-01-06 13:30                                               ` Jan Kiszka
2012-01-06 14:40                                               ` [Qemu-devel] " Stefano Stabellini
2012-01-06 14:40                                                 ` Stefano Stabellini
2012-01-08 10:39                                                 ` [Qemu-devel] " Avi Kivity
2012-01-08 10:39                                                   ` Avi Kivity
2012-01-09 15:25                                                   ` [Qemu-devel] " Stefano Stabellini
2012-01-09 15:25                                                     ` Stefano Stabellini
2012-01-09 15:28                                                     ` [Qemu-devel] " Jan Kiszka
2012-01-09 15:28                                                       ` Jan Kiszka
2012-01-09 15:36                                                       ` [Qemu-devel] " Avi Kivity
2012-01-09 15:36                                                         ` Avi Kivity
2012-01-06 15:58                                               ` [Qemu-devel] " Peter Maydell
2012-01-06 15:58                                                 ` Peter Maydell
2012-01-06 16:50                                                 ` [Qemu-devel] " Jan Kiszka
2012-01-06 16:50                                                   ` Jan Kiszka
2012-01-06 12:19                                           ` [Qemu-devel] " Avi Kivity
2012-01-06 12:19                                             ` Avi Kivity
2012-01-06 12:22                                             ` [Qemu-devel] " Jan Kiszka
2012-01-06 12:22                                               ` Jan Kiszka
2012-01-06 12:47                                               ` [Qemu-devel] " Avi Kivity
2012-01-06 12:47                                                 ` Avi Kivity
2011-12-12 12:58   ` [Qemu-devel] " Stefano Stabellini
2011-12-12 12:58     ` Stefano Stabellini

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