Displaying 20 results from an estimated 3000 matches similar to: "[PATCH vhost v11 05/10] virtio_ring: introduce virtqueue_dma_dev()"
2023 Jul 31
0
[PATCH vhost v11 05/10] virtio_ring: introduce virtqueue_dma_dev()
On Fri, Jul 28, 2023 at 11:03?PM Jakub Kicinski <kuba at kernel.org> wrote:
>
> On Fri, 28 Jul 2023 14:02:33 +0800 Xuan Zhuo wrote:
> > Hi guys, this topic is stuck again. How should I proceed with this work?
> >
> > Let me briefly summarize:
> > 1. The problem with adding virtio_dma_{map, sync} api is that, for AF_XDP and
> > the driver layer, we need to
2023 Jul 28
1
[PATCH vhost v11 05/10] virtio_ring: introduce virtqueue_dma_dev()
On Tue, 25 Jul 2023 19:07:23 +0800, Xuan Zhuo <xuanzhuo at linux.alibaba.com> wrote:
> On Tue, 25 Jul 2023 03:34:34 -0400, "Michael S. Tsirkin" <mst at redhat.com> wrote:
> > On Tue, Jul 25, 2023 at 10:13:48AM +0800, Xuan Zhuo wrote:
> > > On Mon, 24 Jul 2023 09:43:42 -0700, Christoph Hellwig <hch at infradead.org> wrote:
> > > > On Thu,
2023 Aug 01
1
[PATCH vhost v11 05/10] virtio_ring: introduce virtqueue_dma_dev()
On Fri, Jul 28, 2023 at 02:02:33PM +0800, Xuan Zhuo wrote:
> On Tue, 25 Jul 2023 19:07:23 +0800, Xuan Zhuo <xuanzhuo at linux.alibaba.com> wrote:
> > On Tue, 25 Jul 2023 03:34:34 -0400, "Michael S. Tsirkin" <mst at redhat.com> wrote:
> > > On Tue, Jul 25, 2023 at 10:13:48AM +0800, Xuan Zhuo wrote:
> > > > On Mon, 24 Jul 2023 09:43:42 -0700,
2023 Aug 01
0
[PATCH vhost v11 05/10] virtio_ring: introduce virtqueue_dma_dev()
On Mon, 31 Jul 2023 08:46:51 -0700, Jakub Kicinski <kuba at kernel.org> wrote:
> On Mon, 31 Jul 2023 09:23:29 +0800 Jason Wang wrote:
> > > I'd step back and ask you why do you want to use AF_XDP with virtio.
> > > Instead of bifurcating one virtio instance into different queues why
> > > not create a separate virtio instance?
> >
> > I'm not
2023 Aug 01
0
[PATCH vhost v11 05/10] virtio_ring: introduce virtqueue_dma_dev()
On Mon, 31 Jul 2023 19:36:06 -0700, Jakub Kicinski <kuba at kernel.org> wrote:
> On Tue, 1 Aug 2023 10:03:44 +0800 Xuan Zhuo wrote:
> > > Virtio is either a SW
> > > construct or offloaded to very capable HW, so either way cost of
> > > creating an extra instance for DPDK or whatever else is very low.
> >
> > The extra instance is virtio-net?
>
2023 Aug 02
0
[PATCH vhost v11 05/10] virtio_ring: introduce virtqueue_dma_dev()
On Tue, 1 Aug 2023 08:45:10 -0700, Jakub Kicinski <kuba at kernel.org> wrote:
> On Tue, 1 Aug 2023 10:57:30 +0800 Xuan Zhuo wrote:
> > > You have this working and benchmarked or this is just and idea?
> >
> > This is not just an idea. I said that has been used on large scale.
> >
> > This is the library for the APP to use the AF_XDP. We has open it.
>
2023 Jul 10
10
[PATCH vhost v11 00/10] virtio core prepares for AF_XDP
## About DMA APIs
Now, virtio may can not work with DMA APIs when virtio features do not have
VIRTIO_F_ACCESS_PLATFORM.
1. I tried to let DMA APIs return phy address by virtio-device. But DMA APIs just
work with the "real" devices.
2. I tried to let xsk support callballs to get phy address from virtio-net
driver as the dma address. But the maintainers of xsk may want to use
2023 May 17
12
[PATCH vhost v9 00/12] virtio core prepares for AF_XDP
## About DMA APIs
Now, virtio may can not work with DMA APIs when virtio features do not have
VIRTIO_F_ACCESS_PLATFORM.
1. I tried to let DMA APIs return phy address by virtio-device. But DMA APIs just
work with the "real" devices.
2. I tried to let xsk support callballs to get phy address from virtio-net
driver as the dma address. But the maintainers of xsk may want to use
2023 Apr 25
12
[PATCH vhost v7 00/11] virtio core prepares for AF_XDP
## About DMA APIs
Now, virtio may can not work with DMA APIs when virtio features do not have
VIRTIO_F_ACCESS_PLATFORM.
1. I tried to let DMA APIs return phy address by virtio-device. But DMA APIs just
work with the "real" devices.
2. I tried to let xsk support callballs to get phy address from virtio-net
driver as the dma address. But the maintainers of xsk may want to use
2023 Jun 02
12
[PATCH vhost v10 00/10] virtio core prepares for AF_XDP
## About DMA APIs
Now, virtio may can not work with DMA APIs when virtio features do not have
VIRTIO_F_ACCESS_PLATFORM.
1. I tried to let DMA APIs return phy address by virtio-device. But DMA APIs just
work with the "real" devices.
2. I tried to let xsk support callballs to get phy address from virtio-net
driver as the dma address. But the maintainers of xsk may want to use
2023 Jun 02
12
[PATCH vhost v10 00/10] virtio core prepares for AF_XDP
## About DMA APIs
Now, virtio may can not work with DMA APIs when virtio features do not have
VIRTIO_F_ACCESS_PLATFORM.
1. I tried to let DMA APIs return phy address by virtio-device. But DMA APIs just
work with the "real" devices.
2. I tried to let xsk support callballs to get phy address from virtio-net
driver as the dma address. But the maintainers of xsk may want to use
2023 Apr 12
1
[PATCH vhost v6 08/11] virtio_ring: introduce virtqueue_dma_dev()
Here, this has cc the maintainers of AF_XDP.
For on the same page, I summarize it.
We discusses this question last at [1]. We planned to pass one device to xsk.
Then xsk can use the DMA API on this device. The device can be one hw
device(such as PCI, mmio) or virtio device. If it is one hw device, no problem.
If it is one virtio device, then we expect that DMA API on that will return
direct dma
2023 May 09
12
[PATCH vhost v8 00/12] virtio core prepares for AF_XDP
## About DMA APIs
Now, virtio may can not work with DMA APIs when virtio features do not have
VIRTIO_F_ACCESS_PLATFORM.
1. I tried to let DMA APIs return phy address by virtio-device. But DMA APIs just
work with the "real" devices.
2. I tried to let xsk support callballs to get phy address from virtio-net
driver as the dma address. But the maintainers of xsk may want to use
2023 Jun 22
1
[PATCH vhost v10 10/10] virtio_net: support dma premapped
On Fri, Jun 02, 2023 at 05:22:06PM +0800, Xuan Zhuo wrote:
> Introduce the module param "experiment_premapped" to enable the function
> that the virtio-net do dma mapping.
>
> If that is true, the vq of virtio-net is under the premapped mode.
> It just handle the sg with dma_address. And the driver must get the dma
> address of the buffer to unmap after get the buffer
2023 Mar 02
2
[PATCH vhost 07/10] virtio_ring: add api virtio_dma_map() for advance dma
On Thu, Mar 02, 2023 at 11:26:53AM +0800, Jason Wang wrote:
> On Thu, Mar 2, 2023 at 11:24?AM Xuan Zhuo <xuanzhuo at linux.alibaba.com> wrote:
> >
> > On Thu, 2 Mar 2023 11:05:26 +0800, Jason Wang <jasowang at redhat.com> wrote:
> > > On Thu, Mar 2, 2023 at 10:24?AM Xuan Zhuo <xuanzhuo at linux.alibaba.com> wrote:
> > > >
> > > > On
2023 Aug 16
1
[PATCH vhost v13 05/12] virtio_ring: introduce virtqueue_dma_dev()
On Wed, Aug 16, 2023 at 10:24?AM Xuan Zhuo <xuanzhuo at linux.alibaba.com> wrote:
>
> On Wed, 16 Aug 2023 10:19:34 +0800, Jason Wang <jasowang at redhat.com> wrote:
> > On Wed, Aug 16, 2023 at 10:16?AM Xuan Zhuo <xuanzhuo at linux.alibaba.com> wrote:
> > >
> > > On Wed, 16 Aug 2023 09:13:48 +0800, Jason Wang <jasowang at redhat.com> wrote:
>
2023 Mar 22
11
[PATCH vhost v4 00/11] virtio core prepares for AF_XDP
XDP socket(AF_XDP) is an excellent bypass kernel network framework. The zero
copy feature of xsk (XDP socket) needs to be supported by the driver. The
performance of zero copy is very good.
ENV: Qemu with vhost.
vhost cpu | Guest APP CPU |Guest Softirq CPU | PPS
-----------------------------|---------------|------------------|------------
xmit by sockperf: 90% | 100%
2023 Mar 24
11
[PATCH vhost v5 00/11] virtio core prepares for AF_XDP
XDP socket(AF_XDP) is an excellent bypass kernel network framework. The zero
copy feature of xsk (XDP socket) needs to be supported by the driver. The
performance of zero copy is very good.
ENV: Qemu with vhost.
vhost cpu | Guest APP CPU |Guest Softirq CPU | PPS
-----------------------------|---------------|------------------|------------
xmit by sockperf: 90% | 100%
2023 Mar 27
11
[PATCH vhost v6 00/11] virtio core prepares for AF_XDP
XDP socket(AF_XDP) is an excellent bypass kernel network framework. The zero
copy feature of xsk (XDP socket) needs to be supported by the driver. The
performance of zero copy is very good.
ENV: Qemu with vhost.
vhost cpu | Guest APP CPU |Guest Softirq CPU | PPS
-----------------------------|---------------|------------------|------------
xmit by sockperf: 90% | 100%
2023 Mar 21
11
[PATCH vhost v3 00/11] virtio core prepares for AF_XDP
XDP socket(AF_XDP) is an excellent bypass kernel network framework. The zero
copy feature of xsk (XDP socket) needs to be supported by the driver. The
performance of zero copy is very good.
ENV: Qemu with vhost.
vhost cpu | Guest APP CPU |Guest Softirq CPU | PPS
-----------------------------|---------------|------------------|------------
xmit by sockperf: 90% | 100%