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Re: [Qemu-devel] [PATCH v2 8/8] virtio-blk: add x-data-plane=on|off perf
From: |
Kevin Wolf |
Subject: |
Re: [Qemu-devel] [PATCH v2 8/8] virtio-blk: add x-data-plane=on|off performance feature |
Date: |
Tue, 20 Nov 2012 13:53:06 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:13.0) Gecko/20120605 Thunderbird/13.0 |
Am 20.11.2012 13:37, schrieb Daniel P. Berrange:
> On Tue, Nov 20, 2012 at 01:31:52PM +0100, Stefan Hajnoczi wrote:
>> The virtio-blk-data-plane feature is easy to integrate into
>> hw/virtio-blk.c. The data plane can be started and stopped similar to
>> vhost-net.
>>
>> Users can take advantage of the virtio-blk-data-plane feature using the
>> new -device virtio-blk-pci,x-data-plane=on property.
>>
>> The x-data-plane name was chosen because at this stage the feature is
>> experimental and likely to see changes in the future.
>
> Can you give some indication of how it is likely to change, since
> this has a bearing on any libvirt use of this feature ?
I suppose the intended semantics is "libvirt, don't touch this!"
Maybe we could document the x-... prefix for experimental features that
may be changed in incompatible ways or removed in future versions, and
that no management tools should use.
Kevin
- Re: [Qemu-devel] [PATCH v2 2/8] configure: add CONFIG_VIRTIO_BLK_DATA_PLANE, (continued)
- [Qemu-devel] [PATCH v2 1/8] raw-posix: add raw_get_aio_fd() for virtio-blk-data-plane, Stefan Hajnoczi, 2012/11/20
- [Qemu-devel] [PATCH v2 6/8] dataplane: add Linux AIO request queue, Stefan Hajnoczi, 2012/11/20
- [Qemu-devel] [PATCH v2 3/8] dataplane: add host memory mapping code, Stefan Hajnoczi, 2012/11/20
- [Qemu-devel] [PATCH v2 4/8] dataplane: add virtqueue vring code, Stefan Hajnoczi, 2012/11/20
- [Qemu-devel] [PATCH v2 5/8] dataplane: add event loop, Stefan Hajnoczi, 2012/11/20
- [Qemu-devel] [PATCH v2 8/8] virtio-blk: add x-data-plane=on|off performance feature, Stefan Hajnoczi, 2012/11/20
- [Qemu-devel] [PATCH v2 7/8] dataplane: add virtio-blk data plane code, Stefan Hajnoczi, 2012/11/20