From: Gleb Natapov <gleb@redhat.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Blue Swirl <blauwirbel@gmail.com>,
qemu-devel@nongnu.org, kvm@vger.kernel.org, armbru@redhat.com,
alex.williamson@redhat.com, kevin@koconnor.net
Subject: Re: [PATCHv4 15/15] Pass boot device list to firmware.
Date: Thu, 18 Nov 2010 15:16:15 +0200 [thread overview]
Message-ID: <20101118131614.GP7948@redhat.com> (raw)
In-Reply-To: <20101118131202.GA8247@redhat.com>
On Thu, Nov 18, 2010 at 03:12:02PM +0200, Michael S. Tsirkin wrote:
> On Thu, Nov 18, 2010 at 02:37:08PM +0200, Gleb Natapov wrote:
> > > So that's unavoidable if we think paths are correct.
> > > But if we know they are wrong, we are better off
> > > correcting them first IMO.
> > >
> > They are correct for x86. My patch set does not even tries to cover all
> > HW. If sparc want to use them to it better be fixed. Or if there is enough
> > info in the path to determine device it may choose to use it as is.
>
> Fair enough I guess.
>
> > > > But the problem exists only if migration happens in a short window
> > > > between start of the boot process and BIOS reading boot order string.
> > > > After reboot new qemu should have new BIOS.
> > >
> > > That makes it even more nasty, doesn't it?
> > No.
>
> Nasty as in hard to reproduce.
>
It is very easy to reproduce if you know what you are looking for :).
Just stick sleep() in correct place in the BIOS.
--
Gleb.
next prev parent reply other threads:[~2010-11-18 13:16 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-14 15:39 [PATCHv4 00/15] boot order specification Gleb Natapov
2010-11-14 15:39 ` [PATCHv4 01/15] Introduce fw_name field to DeviceInfo structure Gleb Natapov
2010-11-14 15:39 ` [PATCHv4 02/15] Introduce new BusInfo callback get_fw_dev_path Gleb Natapov
2010-11-14 15:39 ` [PATCHv4 03/15] Keep track of ISA ports ISA device is using in qdev Gleb Natapov
2010-11-14 15:39 ` [PATCHv4 04/15] Add get_fw_dev_path callback to ISA bus " Gleb Natapov
2010-11-14 15:39 ` [PATCHv4 05/15] Store IDE bus id in IDEBus structure for easy access Gleb Natapov
2010-11-14 15:39 ` [PATCHv4 06/15] Add get_fw_dev_path callback to IDE bus Gleb Natapov
2010-11-14 15:39 ` [PATCHv4 07/15] Add get_dev_path callback for system bus Gleb Natapov
2010-11-14 15:39 ` [PATCHv4 08/15] Add get_fw_dev_path callback for pci bus Gleb Natapov
2010-11-14 18:27 ` Michael S. Tsirkin
2010-11-14 18:42 ` Gleb Natapov
2010-11-14 15:39 ` [PATCHv4 09/15] Record which USBDevice USBPort belongs too Gleb Natapov
2010-11-14 15:39 ` [PATCHv4 10/15] Add get_dev_path callback for usb bus Gleb Natapov
2010-11-14 15:39 ` [PATCHv4 11/15] Add bootindex parameter to net/block/fd device Gleb Natapov
2010-11-14 15:39 ` [PATCHv4 12/15] Change fw_cfg_add_file() to get full file path as a parameter Gleb Natapov
2010-11-14 15:39 ` [PATCHv4 13/15] Add bootindex for option roms Gleb Natapov
2010-11-14 21:33 ` Blue Swirl
2010-11-15 10:18 ` Gleb Natapov
2010-11-14 15:39 ` [PATCHv4 14/15] Add notifier that will be called when machine is fully created Gleb Natapov
2010-11-14 15:39 ` [PATCHv4 15/15] Pass boot device list to firmware Gleb Natapov
2010-11-14 18:41 ` Michael S. Tsirkin
2010-11-14 18:52 ` Gleb Natapov
2010-11-14 20:56 ` Michael S. Tsirkin
2010-11-14 20:57 ` Michael S. Tsirkin
2010-11-14 20:49 ` Blue Swirl
2010-11-14 20:54 ` Michael S. Tsirkin
2010-11-14 21:13 ` Blue Swirl
2010-11-14 21:45 ` Michael S. Tsirkin
2010-11-14 22:50 ` Blue Swirl
2010-11-15 8:42 ` Gleb Natapov
2010-11-15 20:29 ` Blue Swirl
2010-11-16 14:11 ` Gleb Natapov
2010-11-16 18:30 ` Blue Swirl
2010-11-16 19:02 ` Gleb Natapov
2010-11-17 21:54 ` Blue Swirl
2010-11-18 10:18 ` Gleb Natapov
2010-11-18 11:38 ` Michael S. Tsirkin
2010-11-18 11:45 ` Gleb Natapov
2010-11-18 11:52 ` Michael S. Tsirkin
2010-11-18 12:16 ` Gleb Natapov
2010-11-18 12:23 ` Michael S. Tsirkin
2010-11-18 12:37 ` Gleb Natapov
2010-11-18 13:12 ` Michael S. Tsirkin
2010-11-18 13:16 ` Gleb Natapov [this message]
2010-11-15 3:40 ` Kevin O'Connor
2010-11-15 7:40 ` Gleb Natapov
2010-11-15 7:53 ` Michael S. Tsirkin
2010-11-15 8:09 ` Gleb Natapov
2010-11-15 13:26 ` Kevin O'Connor
2010-11-15 13:36 ` Gleb Natapov
2010-11-15 13:46 ` Gleb Natapov
2010-11-16 2:52 ` Kevin O'Connor
2010-11-16 7:22 ` Gleb Natapov
2010-11-16 13:49 ` Kevin O'Connor
2010-11-16 18:19 ` Blue Swirl
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