[libvirt] [PATCH 2/4] Rearrange VGA/IDE controller address reservation

Daniel Veillard veillard at redhat.com
Tue Jul 20 14:52:25 UTC 2010

On Tue, Jul 20, 2010 at 02:09:30PM +0100, Daniel P. Berrange wrote:
> From: Daniel P. Berrange <dan at berrange.com>
> The first VGA and IDE devices need to have fixed PCI address
> reservations. Currently this is handled inline with the other
> non-primary VGA/IDE devices. The fixed virtio balloon device
> at slot 3, ensures auto-assignment skips the slots 1/2. The
> virtio address will shortly become configurable though. This
> means the reservation of fixed slots needs to be done upfront
> to ensure that they don't get re-used for other devices.
> This is more or less reverting the previous changeset:
>   commit 83acdeaf173b2a1206b755c1ab317cac36facd90
>   Author: Daniel P. Berrange <berrange at redhat.com>
>   Date:   Wed Feb 3 16:11:29 2010 +0000
>   Fix restore of QEMU guests with PCI device reservation
> The difference is that this time, instead of unconditionally
> reserving the address, we only reserve the address if it was
> initially type=none. Addresses of type=pci were handled
> earlier in process by qemuDomainPCIAddressSetCreate(). This
> ensures restore step doesn't have problems
> * src/qemu/qemu_conf.c: Reserve first VGA + IDE address
>   upfront
> ---

  Okay, Just that the 2 new loops replacing the old one
are rather different so I had a bit of a hard time following the
logic, but looks fine,



Daniel Veillard      | libxml Gnome XML XSLT toolkit  http://xmlsoft.org/
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