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Re: [Qemu-devel] [QA-virtio]:Why vring size is limited to 1024?
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [QA-virtio]:Why vring size is limited to 1024? |
Date: |
Wed, 8 Oct 2014 12:15:47 +0300 |
On Wed, Oct 08, 2014 at 10:43:07AM +0300, Avi Kivity wrote:
>
> On 09/30/2014 12:33 PM, Michael S. Tsirkin wrote:
> >a single descriptor might use all of
> >the virtqueue. In this case we wont to be able to pass the
> >descriptor directly to linux as a single iov, since
> >
>
> You could separate maximum request scatter/gather list size from the
> virtqueue size. They are totally unrelated - even now you can have a larger
> request by using indirect descriptors.
We could add a feature to have a smaller or larger S/G length limit.
Is this something useful?
--
MST
- Re: [Qemu-devel] [QA-virtio]:Why vring size is limited to 1024?, Zhangjie (HZ), 2014/10/08
- Re: [Qemu-devel] [QA-virtio]:Why vring size is limited to 1024?, Avi Kivity, 2014/10/08
- Re: [Qemu-devel] [QA-virtio]:Why vring size is limited to 1024?, Zhangjie (HZ), 2014/10/08
- Re: [Qemu-devel] [QA-virtio]:Why vring size is limited to 1024?,
Michael S. Tsirkin <=
- Re: [Qemu-devel] [QA-virtio]:Why vring size is limited to 1024?, Avi Kivity, 2014/10/08
- Re: [Qemu-devel] [QA-virtio]:Why vring size is limited to 1024?, Michael S. Tsirkin, 2014/10/08
- Re: [Qemu-devel] [QA-virtio]:Why vring size is limited to 1024?, Avi Kivity, 2014/10/08
- Re: [Qemu-devel] [QA-virtio]:Why vring size is limited to 1024?, Michael S. Tsirkin, 2014/10/08
- Re: [Qemu-devel] [QA-virtio]:Why vring size is limited to 1024?, Avi Kivity, 2014/10/08
- Re: [Qemu-devel] [QA-virtio]:Why vring size is limited to 1024?, Michael S. Tsirkin, 2014/10/08
- Re: [Qemu-devel] [QA-virtio]:Why vring size is limited to 1024?, Avi Kivity, 2014/10/08
- Re: [Qemu-devel] [QA-virtio]:Why vring size is limited to 1024?, Avi Kivity, 2014/10/08
- Re: [Qemu-devel] [QA-virtio]:Why vring size is limited to 1024?, Avi Kivity, 2014/10/08