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Re: [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property
From: |
Gerd Hoffmann |
Subject: |
Re: [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property |
Date: |
Mon, 14 Dec 2009 22:12:14 +0100 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.4pre) Gecko/20090922 Fedora/3.0-3.9.b4.fc12 Lightning/1.0pre Thunderbird/3.0b4 |
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
- [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property, (continued)
- [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property, Gerd Hoffmann, 2009/12/14
- [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property, Michael S. Tsirkin, 2009/12/14
- Re: [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property, Markus Armbruster, 2009/12/14
- Re: [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property, Michael S. Tsirkin, 2009/12/14
- Re: [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property, Gerd Hoffmann, 2009/12/14
- Re: [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property, Michael S. Tsirkin, 2009/12/14
- Re: [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property, Gerd Hoffmann, 2009/12/14
- Re: [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property, Michael S. Tsirkin, 2009/12/14
- Re: [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property, Gerd Hoffmann, 2009/12/14
- Re: [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property, Michael S. Tsirkin, 2009/12/14
- Re: [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property,
Gerd Hoffmann <=
- Re: [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property, Michael S. Tsirkin, 2009/12/14
- Re: [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property, Gerd Hoffmann, 2009/12/14
- Re: [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property, Gerd Hoffmann, 2009/12/14
- [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property, Michael S. Tsirkin, 2009/12/14
- [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property, Gerd Hoffmann, 2009/12/14
- Re: [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property, Alexander Graf, 2009/12/14