On 12/14/09 22:14, Michael S. Tsirkin wrote:
On Mon, Dec 14, 2009 at 10:12:14PM +0100, Gerd Hoffmann wrote:
On 12/14/09 21:43, Michael S. Tsirkin wrote:
What do we put in e.g. 0.11 compat? Any features we enable
there might not be supported by host.
compat properties as usual?
Sorry, I still fail to see your problem.
You'll have a 'disable' bitmap. Fill it via 'features=<bitmap-prop>'.
Or using separate properties for each feature.
qemu goes figure host_features. When done it masks out the features
disabled via properties. The result is used as final feature bitmap.
-M pc-0.11 will disable hw_checksum
management software can do it too via -device virtio-net-pci,... if some
machines in the pool don't support it. And of course qemu will disable
it on its own in case the host kernel doesn't support it.
cheers,
Gerd
management is always behind :). Imagine a new and improved qemu. I run
old management. I expect to see old properties, but old management can
not disable new ones :)
If management can't deal with 0.12 features it should use -M pc-0.11
cheers,
Gerd
