On Fri, Apr 16, 2021 at 11:24 AM Jason Wang wrote:
>
>
> 在 2021/3/31 下午4:05, Xie Yongji 写道:
> > + }
> > + case VDUSE_INJECT_VQ_IRQ:
> > + ret = -EINVAL;
> > + if (arg >= dev->vq_num)
> > + break;
> > +
> > + ret = 0;
> > +
On Fri, Apr 16, 2021 at 10:24 AM Jason Wang wrote:
>
>
> 在 2021/4/15 下午10:38, Stefan Hajnoczi 写道:
> > On Thu, Apr 15, 2021 at 04:36:35PM +0800, Jason Wang wrote:
> >> 在 2021/4/15 下午3:19, Stefan Hajnoczi 写道:
> >>> On Thu, Apr 15, 2021 at 01:38:37PM +0800, Yon
On Fri, Apr 16, 2021 at 11:03 AM Jason Wang wrote:
>
>
> 在 2021/4/16 上午10:58, Yongji Xie 写道:
> > On Fri, Apr 16, 2021 at 10:20 AM Jason Wang wrote:
> >>
> >> 在 2021/4/15 下午7:17, Yongji Xie 写道:
> >>> On Thu, Apr 15, 2021 at 5:05 PM Jason Wang wr
On Thu, Apr 15, 2021 at 10:38 PM Stefan Hajnoczi wrote:
>
> On Thu, Apr 15, 2021 at 04:36:35PM +0800, Jason Wang wrote:
> >
> > 在 2021/4/15 下午3:19, Stefan Hajnoczi 写道:
> > > On Thu, Apr 15, 2021 at 01:38:37PM +0800, Yongji Xie wrote:
> > > > On Wed, A
On Fri, Apr 16, 2021 at 10:20 AM Jason Wang wrote:
>
>
> 在 2021/4/15 下午7:17, Yongji Xie 写道:
> > On Thu, Apr 15, 2021 at 5:05 PM Jason Wang wrote:
> >>
> >> 在 2021/4/15 下午4:36, Jason Wang 写道:
> >>>> Please state this explicitly at the start of th
On Thu, Apr 15, 2021 at 5:05 PM Jason Wang wrote:
>
>
> 在 2021/4/15 下午4:36, Jason Wang 写道:
> >>>
> >> Please state this explicitly at the start of the document. Existing
> >> interfaces like FUSE are designed to avoid trusting userspace.
> >
> >
> > There're some subtle difference here. VDUSE pres
On Thu, Apr 15, 2021 at 3:19 PM Stefan Hajnoczi wrote:
>
> On Thu, Apr 15, 2021 at 01:38:37PM +0800, Yongji Xie wrote:
> > On Wed, Apr 14, 2021 at 10:15 PM Stefan Hajnoczi
> > wrote:
> > >
> > > On Wed, Mar 31, 2021 at 04:05:19PM +0800, Xie Yongji wrote:
>
On Wed, Apr 14, 2021 at 10:15 PM Stefan Hajnoczi wrote:
>
> On Wed, Mar 31, 2021 at 04:05:19PM +0800, Xie Yongji wrote:
> > VDUSE (vDPA Device in Userspace) is a framework to support
> > implementing software-emulated vDPA devices in userspace. This
> > document is intended to clarify the VDUSE de
On Wed, Apr 14, 2021 at 3:35 PM Michael S. Tsirkin wrote:
>
> On Wed, Mar 31, 2021 at 04:05:09PM +0800, Xie Yongji wrote:
> > This series introduces a framework, which can be used to implement
> > vDPA Devices in a userspace program. The work consist of two parts:
> > control path forwarding and d
On Tue, Apr 13, 2021 at 11:35 AM Jason Wang wrote:
>
>
> 在 2021/4/12 下午5:59, Yongji Xie 写道:
> > On Mon, Apr 12, 2021 at 5:37 PM Jason Wang wrote:
> >>
> >> 在 2021/4/12 下午4:02, Yongji Xie 写道:
> >>> On Mon, Apr 12, 2021 at 3:16 PM Jason Wang w
On Mon, Apr 12, 2021 at 5:37 PM Jason Wang wrote:
>
>
> 在 2021/4/12 下午4:02, Yongji Xie 写道:
> > On Mon, Apr 12, 2021 at 3:16 PM Jason Wang wrote:
> >>
> >> 在 2021/4/9 下午4:02, Yongji Xie 写道:
> >>>>>>> +};
> >>>>>>> +
On Mon, Apr 12, 2021 at 3:16 PM Jason Wang wrote:
>
>
> 在 2021/4/9 下午4:02, Yongji Xie 写道:
> >>>>> +};
> >>>>> +
> >>>>> +struct vduse_dev_config_data {
> >>>>> + __u32 offset; /* offset from the
On Mon, Apr 12, 2021 at 4:49 AM Michael S. Tsirkin wrote:
>
> On Sun, Apr 11, 2021 at 01:36:18PM +0800, Yongji Xie wrote:
> > On Sat, Apr 10, 2021 at 12:16 AM Michael S. Tsirkin wrote:
> > >
> > > On Wed, Mar 31, 2021 at 04:05:12PM +0800, Xie Yongji wrote:
> >
On Sat, Apr 10, 2021 at 12:16 AM Michael S. Tsirkin wrote:
>
> On Wed, Mar 31, 2021 at 04:05:12PM +0800, Xie Yongji wrote:
> > Use vhost_dev->mutex to protect vhost device iotlb from
> > concurrent access.
> >
> > Fixes: 4c8cf318("vhost: introduce vDPA-based backend")
> > Cc: sta...@vger.kernel.or
On Fri, Apr 9, 2021 at 1:36 PM Jason Wang wrote:
>
>
> 在 2021/4/8 下午5:36, Yongji Xie 写道:
> > On Thu, Apr 8, 2021 at 2:57 PM Jason Wang wrote:
> >>
> >> 在 2021/3/31 下午4:05, Xie Yongji 写道:
> >>> This VDUSE driver enables implementing vDPA devices in use
dpa_user/vduse_dev.c
> > b/drivers/vdpa/vdpa_user/vduse_dev.c
> > new file mode 100644
> > index ..51ca73464d0d
> > --- /dev/null
> > +++ b/drivers/vdpa/vdpa_user/vduse_dev.c
> > @@ -0,0 +1,1362 @@
> > +// SPDX-License-Identifier: GPL-2.0-only
> >
On Thu, Apr 8, 2021 at 3:18 PM Jason Wang wrote:
>
>
> 在 2021/3/31 下午4:05, Xie Yongji 写道:
> > VDUSE (vDPA Device in Userspace) is a framework to support
> > implementing software-emulated vDPA devices in userspace. This
> > document is intended to clarify the VDUSE design and usage.
> >
> > Signed
On Thu, Apr 8, 2021 at 11:26 AM Jason Wang wrote:
>
>
> 在 2021/3/31 下午4:05, Xie Yongji 写道:
> > This implements an MMU-based IOMMU driver to support mapping
> > kernel dma buffer into userspace. The basic idea behind it is
> > treating MMU (VA->PA) as IOMMU (IOVA->PA). The driver will set
> > up MM
On Wed, Mar 31, 2021 at 10:08 PM Christian Brauner
wrote:
>
> On Wed, Mar 31, 2021 at 09:59:07PM +0800, Yongji Xie wrote:
> > On Wed, Mar 31, 2021 at 8:23 PM Christian Brauner
> > wrote:
> > >
> > > On Wed, Mar 31, 2021 at 07:32:33PM +0800, Yongji Xie wrote:
On Wed, Mar 31, 2021 at 8:23 PM Christian Brauner
wrote:
>
> On Wed, Mar 31, 2021 at 07:32:33PM +0800, Yongji Xie wrote:
> > On Wed, Mar 31, 2021 at 5:15 PM Christian Brauner
> > wrote:
> > >
> > > On Wed, Mar 31, 2021 at 04:05:10PM +0800, Xie Yongji wrote:
On Wed, Mar 31, 2021 at 5:15 PM Christian Brauner
wrote:
>
> On Wed, Mar 31, 2021 at 04:05:10PM +0800, Xie Yongji wrote:
> > Export receive_fd() so that some modules can use
> > it to pass file descriptor between processes without
> > missing any security stuffs.
> >
> > Signed-off-by: Xie Yongji
On Fri, Mar 26, 2021 at 2:16 PM Jason Wang wrote:
>
>
> 在 2021/3/26 下午1:14, Yongji Xie 写道:
>
> + }
> + map->bounce_page = page;
> +
> + /* paired with vduse_domain_map_page() */
> + smp_mb();
>
> So this is suspicious. It's better to ex
On Fri, Mar 26, 2021 at 12:27 PM Jason Wang wrote:
>
>
> 在 2021/3/25 下午3:38, Yongji Xie 写道:
> > On Thu, Mar 25, 2021 at 12:53 PM Jason Wang wrote:
> >>
> >> 在 2021/3/24 下午3:39, Yongji Xie 写道:
> >>> On Wed, Mar 24, 2021 at 11:54 AM Jason Wang wr
On Thu, Mar 25, 2021 at 4:25 PM Christoph Hellwig wrote:
>
> On Mon, Mar 15, 2021 at 05:46:43PM +0800, Yongji Xie wrote:
> > On Mon, Mar 15, 2021 at 5:08 PM Christoph Hellwig
> > wrote:
> > >
> > > On Mon, Mar 15, 2021 at 01:37:11PM +0800, Xie Yongji wrote:
&
On Thu, Mar 25, 2021 at 12:53 PM Jason Wang wrote:
>
>
> 在 2021/3/24 下午3:39, Yongji Xie 写道:
> > On Wed, Mar 24, 2021 at 11:54 AM Jason Wang wrote:
> >>
> >> 在 2021/3/15 下午1:37, Xie Yongji 写道:
> >>> This implements an MMU-based IOMMU driver to
On Thu, Mar 25, 2021 at 2:31 PM Jason Wang wrote:
>
>
> 在 2021/3/24 下午4:55, Yongji Xie 写道:
> > On Wed, Mar 24, 2021 at 12:43 PM Jason Wang wrote:
> >>
> >> 在 2021/3/15 下午1:37, Xie Yongji 写道:
> >>> This VDUSE driver enables implementing vDPA devices i
On Wed, Mar 24, 2021 at 12:45 PM Jason Wang wrote:
>
>
> 在 2021/3/15 下午1:37, Xie Yongji 写道:
> > This patch introduces a new ioctl VDUSE_INJECT_CONFIG_IRQ
> > to support injecting config interrupt.
> >
> > Signed-off-by: Xie Yongji
>
>
> I suggest to squash this into path 9.
>
Will do it in v6.
t; new file mode 100644
> > index ..07d0ae92d470
> > --- /dev/null
> > +++ b/drivers/vdpa/vdpa_user/vduse_dev.c
> > @@ -0,0 +1,1281 @@
> > +// SPDX-License-Identifier: GPL-2.0-only
> > +/*
> > + * VDUSE: vDPA Device in Userspace
On Wed, Mar 24, 2021 at 11:54 AM Jason Wang wrote:
>
>
> 在 2021/3/15 下午1:37, Xie Yongji 写道:
> > This implements an MMU-based IOMMU driver to support mapping
> > kernel dma buffer into userspace. The basic idea behind it is
> > treating MMU (VA->PA) as IOMMU (IOVA->PA). The driver will set
> > up M
On Tue, Mar 23, 2021 at 11:13 AM Jason Wang wrote:
>
>
> 在 2021/3/15 下午1:37, Xie Yongji 写道:
> > This patch introduces an attribute for vDPA device to indicate
> > whether virtual address can be used. If vDPA device driver set
> > it, vhost-vdpa bus driver will not pin user page and transfer
> > us
On Tue, Mar 23, 2021 at 11:02 AM Jason Wang wrote:
>
>
> 在 2021/3/15 下午1:37, Xie Yongji 写道:
> > Use vhost_dev->mutex to protect vhost device iotlb from
> > concurrent access.
> >
> > Fixes: 4c8cf318("vhost: introduce vDPA-based backend")
> > Signed-off-by: Xie Yongji
>
>
> Acked-by: Jason Wang
>
On Mon, Mar 15, 2021 at 10:44 PM Christian Brauner
wrote:
>
> On Mon, Mar 15, 2021 at 05:46:43PM +0800, Yongji Xie wrote:
> > On Mon, Mar 15, 2021 at 5:08 PM Christoph Hellwig
> > wrote:
> > >
> > > On Mon, Mar 15, 2021 at 01:37:11PM +0800, Xie Yongji wro
On Mon, Mar 15, 2021 at 5:08 PM Christoph Hellwig wrote:
>
> On Mon, Mar 15, 2021 at 01:37:11PM +0800, Xie Yongji wrote:
> > Export __receive_fd() so that some modules can use
> > it to pass file descriptor between processes.
>
> I really don't think any non-core code should do that, especilly not
On Wed, Mar 10, 2021 at 8:58 PM Jason Wang wrote:
>
>
> On 2021/2/23 7:50 下午, Xie Yongji wrote:
> > +
> > + switch (cmd) {
> > + case VDUSE_IOTLB_GET_FD: {
> > + struct vduse_iotlb_entry entry;
> > + struct vhost_iotlb_map *map;
> > + struct vdpa_map_fil
On Mon, Mar 8, 2021 at 3:02 PM Jason Wang wrote:
>
>
> On 2021/3/8 12:50 下午, Yongji Xie wrote:
> > On Mon, Mar 8, 2021 at 11:04 AM Jason Wang wrote:
> >>
> >> On 2021/3/5 4:12 下午, Yongji Xie wrote:
> >>> On Fri, Mar 5, 2021 at 3:37 PM Jason Wang
On Mon, Mar 8, 2021 at 3:04 PM Jason Wang wrote:
>
>
> On 2021/3/8 1:05 下午, Yongji Xie wrote:
> > On Mon, Mar 8, 2021 at 11:52 AM Jason Wang wrote:
> >>
> >> On 2021/3/8 11:45 上午, Yongji Xie wrote:
> >>> On Mon, Mar 8, 2021 at 11:17 AM Jason Wang
On Mon, Mar 8, 2021 at 11:52 AM Jason Wang wrote:
>
>
> On 2021/3/8 11:45 上午, Yongji Xie wrote:
> > On Mon, Mar 8, 2021 at 11:17 AM Jason Wang wrote:
> >>
> >> On 2021/3/5 3:59 下午, Yongji Xie wrote:
> >>> On Fri, Mar 5, 2021 at 3:27 PM Jason Wang
On Mon, Mar 8, 2021 at 11:04 AM Jason Wang wrote:
>
>
> On 2021/3/5 4:12 下午, Yongji Xie wrote:
> > On Fri, Mar 5, 2021 at 3:37 PM Jason Wang wrote:
> >>
> >> On 2021/3/5 3:27 下午, Yongji Xie wrote:
> >>> On Fri, Mar 5, 2021 at 3:01 PM Jason Wang
On Mon, Mar 8, 2021 at 11:17 AM Jason Wang wrote:
>
>
> On 2021/3/5 3:59 下午, Yongji Xie wrote:
> > On Fri, Mar 5, 2021 at 3:27 PM Jason Wang wrote:
> >>
> >> On 2021/3/5 3:13 下午, Yongji Xie wrote:
> >>> On Fri, Mar 5, 2021 at 2:52 PM Jason Wang
On Fri, Mar 5, 2021 at 3:37 PM Jason Wang wrote:
>
>
> On 2021/3/5 3:27 下午, Yongji Xie wrote:
> > On Fri, Mar 5, 2021 at 3:01 PM Jason Wang wrote:
> >>
> >> On 2021/3/5 2:36 下午, Yongji Xie wrote:
> >>> On Fri, Mar 5, 2021 at 11:42 AM Jason Wang w
On Fri, Mar 5, 2021 at 3:27 PM Jason Wang wrote:
>
>
> On 2021/3/5 3:13 下午, Yongji Xie wrote:
> > On Fri, Mar 5, 2021 at 2:52 PM Jason Wang wrote:
> >>
> >> On 2021/3/5 2:15 下午, Yongji Xie wrote:
> >>
> >> Sorry if I've asked this before.
&
On Fri, Mar 5, 2021 at 3:01 PM Jason Wang wrote:
>
>
> On 2021/3/5 2:36 下午, Yongji Xie wrote:
> > On Fri, Mar 5, 2021 at 11:42 AM Jason Wang wrote:
> >>
> >> On 2021/3/5 11:30 上午, Yongji Xie wrote:
> >>> On Fri, Mar 5, 2021 at 11:05 AM Jason Wang
On Fri, Mar 5, 2021 at 2:52 PM Jason Wang wrote:
>
>
> On 2021/3/5 2:15 下午, Yongji Xie wrote:
>
> Sorry if I've asked this before.
>
> But what's the reason for maintaing a dedicated IOTLB here? I think we
> could reuse vduse_dev->iommu since the device can n
On Fri, Mar 5, 2021 at 11:44 AM Jason Wang wrote:
>
>
> On 2021/3/5 11:37 上午, Yongji Xie wrote:
> > On Fri, Mar 5, 2021 at 11:11 AM Jason Wang wrote:
> >>
> >> On 2021/3/4 4:19 下午, Yongji Xie wrote:
> >>> On Thu, Mar 4, 2021 at 3:30 PM Jason Wang w
On Fri, Mar 5, 2021 at 11:42 AM Jason Wang wrote:
>
>
> On 2021/3/5 11:30 上午, Yongji Xie wrote:
> > On Fri, Mar 5, 2021 at 11:05 AM Jason Wang wrote:
> >>
> >> On 2021/3/4 4:58 下午, Yongji Xie wrote:
> >>> On Thu, Mar 4, 2021 at 2:59 PM Jason Wang w
On Fri, Mar 5, 2021 at 11:36 AM Jason Wang wrote:
>
>
> On 2021/3/4 1:12 下午, Yongji Xie wrote:
> > On Thu, Mar 4, 2021 at 12:21 PM Jason Wang wrote:
> >>
> >> On 2021/2/23 7:50 下午, Xie Yongji wrote:
> >>> This implements a MMU-based IOMMU driver to
On Fri, Mar 5, 2021 at 11:20 AM Jason Wang wrote:
>
>
> On 2021/3/4 4:05 下午, Yongji Xie wrote:
> > On Thu, Mar 4, 2021 at 2:27 PM Jason Wang wrote:
> >>
> >> On 2021/2/23 7:50 下午, Xie Yongji wrote:
> >>> This VDUSE driver enables implementing vDPA
On Fri, Mar 5, 2021 at 11:11 AM Jason Wang wrote:
>
>
> On 2021/3/4 4:19 下午, Yongji Xie wrote:
> > On Thu, Mar 4, 2021 at 3:30 PM Jason Wang wrote:
> >>
> >> On 2021/2/23 7:50 下午, Xie Yongji wrote:
> >>> Add a parameter for the ioctl VDUSE_INJECT_
On Fri, Mar 5, 2021 at 11:05 AM Jason Wang wrote:
>
>
> On 2021/3/4 4:58 下午, Yongji Xie wrote:
> > On Thu, Mar 4, 2021 at 2:59 PM Jason Wang wrote:
> >>
> >> On 2021/2/23 7:50 下午, Xie Yongji wrote:
> >>> This patch introduces a workqueue to
On Thu, Mar 4, 2021 at 2:40 PM Jason Wang wrote:
>
>
> On 2021/2/23 7:50 下午, Xie Yongji wrote:
> > VDUSE (vDPA Device in Userspace) is a framework to support
> > implementing software-emulated vDPA devices in userspace. This
> > document is intended to clarify the VDUSE design and usage.
> >
> > S
On Thu, Mar 4, 2021 at 2:59 PM Jason Wang wrote:
>
>
> On 2021/2/23 7:50 下午, Xie Yongji wrote:
> > This patch introduces a workqueue to support injecting
> > virtqueue's interrupt asynchronously. This is mainly
> > for performance considerations which makes sure the push()
> > and pop() for used v
On Thu, Mar 4, 2021 at 3:30 PM Jason Wang wrote:
>
>
> On 2021/2/23 7:50 下午, Xie Yongji wrote:
> > Add a parameter for the ioctl VDUSE_INJECT_VQ_IRQ to support
> > injecting virtqueue's interrupt to the specified cpu.
>
>
> How userspace know which CPU is this irq for? It looks to me we need to
>
/vdpa_user/vduse_dev.c
> > new file mode 100644
> > index ..393bf99c48be
> > --- /dev/null
> > +++ b/drivers/vdpa/vdpa_user/vduse_dev.c
> > @@ -0,0 +1,1348 @@
> > +// SPDX-License-Identifier: GPL-2.0-only
> > +/*
> > + * VDUSE: vDPA Device
On Thu, Mar 4, 2021 at 11:07 AM Jason Wang wrote:
>
>
> On 2021/2/23 7:50 下午, Xie Yongji wrote:
> > This patch introduces an attribute for vDPA device to indicate
> > whether virtual address can be used. If vDPA device driver set
> > it, vhost-vdpa bus driver will not pin user page and transfer
>
On Thu, Mar 4, 2021 at 12:21 PM Jason Wang wrote:
>
>
> On 2021/2/23 7:50 下午, Xie Yongji wrote:
> > This implements a MMU-based IOMMU driver to support mapping
> > kernel dma buffer into userspace. The basic idea behind it is
> > treating MMU (VA->PA) as IOMMU (IOVA->PA). The driver will set
> > u
On Wed, Mar 3, 2021 at 6:52 PM Mika Penttilä wrote:
>
>
>
> On 23.2.2021 13.50, Xie Yongji wrote:
> > This patch introduces an attribute for vDPA device to indicate
> > whether virtual address can be used. If vDPA device driver set
> > it, vhost-vdpa bus driver will not pin user page and transfer
On Tue, Mar 2, 2021 at 2:44 PM Jason Wang wrote:
>
>
> On 2021/2/23 7:50 下午, Xie Yongji wrote:
> > Increase the recursion depth of eventfd_signal() to 1. This
> > is the maximum recursion depth we have found so far.
> >
> > Signed-off-by: Xie Yongji
>
>
> Acked-by: Jason Wang
>
> It might be use
On Tue, Mar 2, 2021 at 2:47 PM Jason Wang wrote:
>
>
> On 2021/2/23 7:50 下午, Xie Yongji wrote:
> > Use vhost_dev->mutex to protect vhost device iotlb from
> > concurrent access.
> >
> > Fixes: 4c8cf318("vhost: introduce vDPA-based backend")
> > Signed-off-by: Xie Yongji
> > ---
> > drivers/vhos
On Fri, Jan 29, 2021 at 11:04 PM Stefano Garzarella wrote:
>
> On Thu, Jan 28, 2021 at 11:11:49AM +0800, Jason Wang wrote:
> >
> >On 2021/1/27 下午4:57, Stefano Garzarella wrote:
> >>On Wed, Jan 27, 2021 at 11:33:03AM +0800, Jason Wang wrote:
> >>>
> >>>On 2021/1/20 下午7:08, Stefano Garzarella wrote:
On Thu, Jan 28, 2021 at 2:14 PM Jason Wang wrote:
>
>
> On 2021/1/28 下午2:03, Yongji Xie wrote:
> >>>>> +
> >>>>> +static const struct file_operations vduse_domain_fops = {
> >>>>> + .mmap = vduse_domain_mmap,
> >>>
On Thu, Jan 28, 2021 at 12:31 PM Jason Wang wrote:
>
>
> On 2021/1/28 上午11:52, Yongji Xie wrote:
> > On Thu, Jan 28, 2021 at 11:05 AM Jason Wang wrote:
> >>
> >> On 2021/1/27 下午5:11, Yongji Xie wrote:
> >>> On Wed, Jan 27, 2021 at 11:38 AM Jason Wa
On Thu, Jan 28, 2021 at 12:27 PM Jason Wang wrote:
>
>
> On 2021/1/27 下午4:50, Yongji Xie wrote:
> > On Tue, Jan 26, 2021 at 4:09 PM Jason Wang wrote:
> >>
> >> On 2021/1/19 下午1:07, Xie Yongji wrote:
> >>> This VDUSE driver enables implementing vDPA
On Thu, Jan 28, 2021 at 11:08 AM Jens Axboe wrote:
>
> On 1/27/21 8:04 PM, Jason Wang wrote:
> >
> > On 2021/1/27 下午5:11, Yongji Xie wrote:
> >> On Wed, Jan 27, 2021 at 11:38 AM Jason Wang wrote:
> >>>
> >>> On 2021/1/20 下午2:52, Yongji Xie w
On Thu, Jan 28, 2021 at 11:05 AM Jason Wang wrote:
>
>
> On 2021/1/27 下午5:11, Yongji Xie wrote:
> > On Wed, Jan 27, 2021 at 11:38 AM Jason Wang wrote:
> >>
> >> On 2021/1/20 下午2:52, Yongji Xie wrote:
> >>> On Wed, Jan 20, 2021 at 12:24 PM Jason
; + struct file *file;
> > + unsigned long bounce_pfns = PAGE_ALIGN(bounce_size) >> PAGE_SHIFT;
> > +
> > + domain = kzalloc(sizeof(*domain), GFP_KERNEL);
> > + if (!domain)
> > + return NULL;
> > +
> > + domain
On Wed, Jan 27, 2021 at 11:51 AM Jason Wang wrote:
>
>
> On 2021/1/20 下午3:52, Yongji Xie wrote:
> > On Wed, Jan 20, 2021 at 2:24 PM Jason Wang wrote:
> >>
> >> On 2021/1/19 下午12:59, Xie Yongji wrote:
> >>> Add an opaque pointer for vhost IOTLB to s
On Wed, Jan 27, 2021 at 11:38 AM Jason Wang wrote:
>
>
> On 2021/1/20 下午2:52, Yongji Xie wrote:
> > On Wed, Jan 20, 2021 at 12:24 PM Jason Wang wrote:
> >>
> >> On 2021/1/19 下午12:59, Xie Yongji wrote:
> >>> Now we have a global percpu counter to limi
On Wed, Jan 27, 2021 at 4:59 PM Stefano Garzarella wrote:
>
> On Tue, Jan 19, 2021 at 12:59:12PM +0800, Xie Yongji wrote:
> >With VDUSE, we should be able to support all kinds of virtio devices.
> >
> >Signed-off-by: Xie Yongji
> >---
> > drivers/vhost/vdpa.c | 29 +++--
>
On Tue, Jan 26, 2021 at 4:17 PM Jason Wang wrote:
>
>
> On 2021/1/19 下午1:07, Xie Yongji wrote:
> > This patch introduces a dedicated workqueue for irq injection
> > so that we are able to do some performance tuning for it.
> >
> > Signed-off-by: Xie Yongji
>
>
> If we want the split like this.
>
On Tue, Jan 26, 2021 at 4:19 PM Jason Wang wrote:
>
>
> On 2021/1/19 下午1:07, Xie Yongji wrote:
> > This VDUSE driver enables implementing vDPA devices in userspace.
> > Both control path and data path of vDPA devices will be able to
> > be handled in userspace.
> >
> > In the control path, the VDU
On Tue, Jan 26, 2021 at 4:10 PM Jason Wang wrote:
>
>
> On 2021/1/19 下午1:07, Xie Yongji wrote:
> > The module should not be unloaded if any vduse device exists.
> > So increase the module's reference count when creating vduse
> > device. And the reference count is kept until the device is
> > dest
On Wed, Jan 20, 2021 at 2:24 PM Jason Wang wrote:
>
>
> On 2021/1/19 下午12:59, Xie Yongji wrote:
> > Add an opaque pointer for vhost IOTLB to store the
> > corresponding vma->vm_file and offset on the DMA mapping.
>
>
> Let's split the patch into two.
>
> 1) opaque pointer
> 2) vma stuffs
>
OK.
>
On Wed, Jan 20, 2021 at 1:55 PM Jason Wang wrote:
>
>
> On 2021/1/19 下午12:59, Xie Yongji wrote:
> > This patches introduces SVA (Shared Virtual Addressing)
> > support for vDPA device. During vDPA device allocation,
> > vDPA device driver needs to indicate whether SVA is
> > supported by the devic
On Wed, Jan 20, 2021 at 12:24 PM Jason Wang wrote:
>
>
> On 2021/1/19 下午12:59, Xie Yongji wrote:
> > Now we have a global percpu counter to limit the recursion depth
> > of eventfd_signal(). This can avoid deadlock or stack overflow.
> > But in stack overflow case, it should be OK to increase the
On Wed, Jan 20, 2021 at 11:47 AM Jason Wang wrote:
>
>
> On 2021/1/19 下午12:59, Xie Yongji wrote:
> > With VDUSE, we should be able to support all kinds of virtio devices.
> >
> > Signed-off-by: Xie Yongji
> > ---
> > drivers/vhost/vdpa.c | 29 +++--
> > 1 file changed,
On Wed, Jan 20, 2021 at 11:44 AM Jason Wang wrote:
>
>
> On 2021/1/19 下午12:59, Xie Yongji wrote:
> > Introduce a mutex to protect vhost device iotlb from
> > concurrent access.
> >
> > Fixes: 4c8cf318("vhost: introduce vDPA-based backend")
> > Signed-off-by: Xie Yongji
> > ---
> > drivers/vhost
On Wed, Jan 20, 2021 at 1:54 AM Randy Dunlap wrote:
>
> Hi,
>
> Documentation comments only:
>
Will fix it.
Thanks,
Yongji
> On 1/18/21 9:07 PM, Xie Yongji wrote:
> >
> > Signed-off-by: Xie Yongji
> > ---
> > Documentation/driver-api/vduse.rst | 85 ++
> >
> > diff --git a/D
On Tue, Jan 19, 2021 at 10:54 PM Jonathan Corbet wrote:
>
> X-Gm-Spam: 0
> X-Gm-Phishy: 0
>
> On Tue, 19 Jan 2021 13:07:53 +0800
> Xie Yongji wrote:
>
> > diff --git a/Documentation/driver-api/vduse.rst
> > b/Documentation/driver-api/vduse.rst
> > new file mode 100644
> > index ..941
On Fri, Jan 8, 2021 at 9:32 PM Bob Liu wrote:
>
> On 12/22/20 10:52 PM, Xie Yongji wrote:
> > This VDUSE driver enables implementing vDPA devices in userspace.
> > Both control path and data path of vDPA devices will be able to
> > be handled in userspace.
> >
> > In the control path, the VDUSE dr
On Thu, Dec 31, 2020 at 3:12 PM Jason Wang wrote:
>
>
> On 2020/12/31 下午2:52, Yongji Xie wrote:
> > On Thu, Dec 31, 2020 at 1:50 PM Jason Wang wrote:
> >>
> >> On 2020/12/31 下午1:15, Yongji Xie wrote:
> >>> On Thu, Dec 31, 2020 at 10:49 AM Jason Wan
On Thu, Dec 31, 2020 at 1:50 PM Jason Wang wrote:
>
>
> On 2020/12/31 下午1:15, Yongji Xie wrote:
> > On Thu, Dec 31, 2020 at 10:49 AM Jason Wang wrote:
> >>
> >> On 2020/12/30 下午6:12, Yongji Xie wrote:
> >>> On Wed, Dec 30, 2020 at 4:41 PM Jason Wan
On Thu, Dec 31, 2020 at 10:49 AM Jason Wang wrote:
>
>
> On 2020/12/30 下午6:12, Yongji Xie wrote:
> > On Wed, Dec 30, 2020 at 4:41 PM Jason Wang wrote:
> >>
> >> On 2020/12/30 下午3:09, Yongji Xie wrote:
> >>> On Wed, Dec 30, 2020 at 2:11 PM Jason Wan
On Wed, Dec 30, 2020 at 4:41 PM Jason Wang wrote:
>
>
> On 2020/12/30 下午3:09, Yongji Xie wrote:
> > On Wed, Dec 30, 2020 at 2:11 PM Jason Wang wrote:
> >>
> >> On 2020/12/29 下午6:26, Yongji Xie wrote:
> >>> On Tue, Dec 29, 2020 at 5:11 PM Jason Wang
On Wed, Dec 30, 2020 at 2:11 PM Jason Wang wrote:
>
>
> On 2020/12/29 下午6:26, Yongji Xie wrote:
> > On Tue, Dec 29, 2020 at 5:11 PM Jason Wang wrote:
> >>
> >>
> >> - Original Message -
> >>> On Mon, Dec 28, 2020 at 4:43 PM Jason W
On Tue, Dec 29, 2020 at 5:11 PM Jason Wang wrote:
>
>
>
> - Original Message -
> > On Mon, Dec 28, 2020 at 4:43 PM Jason Wang wrote:
> > >
> > >
> > > On 2020/12/28 下午4:14, Yongji Xie wrote:
> > > >> I see. So all the abov
On Mon, Dec 28, 2020 at 4:43 PM Jason Wang wrote:
>
>
> On 2020/12/28 下午4:14, Yongji Xie wrote:
> >> I see. So all the above two questions are because VHOST_IOTLB_INVALIDATE
> >> is expected to be synchronous. This need to be solved by tweaking the
> >> curren
On Mon, Dec 28, 2020 at 3:43 PM Jason Wang wrote:
>
>
> On 2020/12/25 下午6:31, Yongji Xie wrote:
> > On Fri, Dec 25, 2020 at 2:58 PM Jason Wang wrote:
> >>
> >> On 2020/12/24 下午3:37, Yongji Xie wrote:
> >>> On Thu, Dec 24, 2020 at 10:41 AM Jason Wan
On Fri, Dec 25, 2020 at 3:02 PM Jason Wang wrote:
>
>
> On 2020/12/25 上午10:37, Yongji Xie wrote:
> > On Thu, Dec 24, 2020 at 3:37 PM Yongji Xie wrote:
> >> On Thu, Dec 24, 2020 at 10:41 AM Jason Wang wrote:
> >>>
> >>> On 2020/12/23 下午8:14, Yongj
On Fri, Dec 25, 2020 at 2:58 PM Jason Wang wrote:
>
>
> On 2020/12/24 下午3:37, Yongji Xie wrote:
> > On Thu, Dec 24, 2020 at 10:41 AM Jason Wang wrote:
> >>
> >> On 2020/12/23 下午8:14, Yongji Xie wrote:
> >>> On Wed, Dec 23, 2020 at 5:05 PM Jason W
On Thu, Dec 24, 2020 at 3:37 PM Yongji Xie wrote:
>
> On Thu, Dec 24, 2020 at 10:41 AM Jason Wang wrote:
> >
> >
> > On 2020/12/23 下午8:14, Yongji Xie wrote:
> > > On Wed, Dec 23, 2020 at 5:05 PM Jason Wang wrote:
> > >>
> > >> On 2020/
On Thu, Dec 24, 2020 at 11:01 AM Jason Wang wrote:
>
>
> On 2020/12/23 下午10:17, Yongji Xie wrote:
> > On Wed, Dec 23, 2020 at 4:08 PM Jason Wang wrote:
> >>
> >> On 2020/12/22 下午10:52, Xie Yongji wrote:
> >>> This VDUSE driver enables implementing
On Thu, Dec 24, 2020 at 10:41 AM Jason Wang wrote:
>
>
> On 2020/12/23 下午8:14, Yongji Xie wrote:
> > On Wed, Dec 23, 2020 at 5:05 PM Jason Wang wrote:
> >>
> >> On 2020/12/22 下午10:52, Xie Yongji wrote:
> >>> To support vhost-vdpa bus driver, we nee
On Thu, Dec 24, 2020 at 10:37 AM Jason Wang wrote:
>
>
> On 2020/12/23 下午7:06, Yongji Xie wrote:
> > On Wed, Dec 23, 2020 at 4:37 PM Jason Wang wrote:
> >>
> >> On 2020/12/22 下午10:52, Xie Yongji wrote:
> >>> This patch introduces a new method in th
On Wed, Dec 23, 2020 at 4:13 PM Christoph Hellwig wrote:
>
> On Wed, Dec 23, 2020 at 02:32:07PM +0800, Yongji Xie wrote:
> > Now I want to map/unmap some pages in an userland vma dynamically. The
> > vm_insert_page() is being used for mapping. In the unmapping case, it
> + domain->size = size;
> > + INIT_LIST_HEAD(&domain->vma_list);
> > + mutex_init(&domain->vma_lock);
> > + mutex_init(&domain->map_lock);
> > +
> > + return domain;
> > +err:
> > + for (j
On Wed, Dec 23, 2020 at 5:05 PM Jason Wang wrote:
>
>
> On 2020/12/22 下午10:52, Xie Yongji wrote:
> > To support vhost-vdpa bus driver, we need a way to share the
> > vhost-vdpa backend process's memory with the userspace VDUSE process.
> >
> > This patch tries to make use of the vhost iotlb messag
On Wed, Dec 23, 2020 at 4:37 PM Jason Wang wrote:
>
>
> On 2020/12/22 下午10:52, Xie Yongji wrote:
> > This patch introduces a new method in the vdpa_config_ops to
> > support processing the raw vhost memory mapping message in the
> > vDPA device driver.
> >
> > Signed-off-by: Xie Yongji
> > ---
>
On Wed, Dec 23, 2020 at 2:38 PM Jason Wang wrote:
>
>
> On 2020/12/22 下午10:52, Xie Yongji wrote:
> > This series introduces a framework, which can be used to implement
> > vDPA Devices in a userspace program. The work consist of two parts:
> > control path forwarding and data path offloading.
> >
On Tue, Dec 22, 2020 at 11:44 PM Christoph Hellwig wrote:
>
> On Tue, Dec 22, 2020 at 10:52:09PM +0800, Xie Yongji wrote:
> > Export zap_page_range() for use in VDUSE.
>
> Err, no. This has absolutely no business being used by drivers.
Now I want to map/unmap some pages in an userland vma dynami
On Wed, Dec 2, 2020 at 7:13 PM Parav Pandit wrote:
>
>
>
> > From: Yongji Xie
> > Sent: Wednesday, December 2, 2020 2:52 PM
> >
> > On Wed, Dec 2, 2020 at 12:53 PM Parav Pandit wrote:
> > >
> > >
> > >
> > >
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