On Fri, Apr 13, 2018 at 12:30:24PM +0800, Jason Wang wrote:
> On 2018年04月01日 22:12, Tiwei Bie wrote:
> > Hello everyone,
> >
> > This RFC implements packed ring support for virtio driver.
> >
> > The code was tested with DPDK vhost (testpmd/vhost-PMD) implement
On Fri, Mar 16, 2018 at 07:36:47PM +0800, Jason Wang wrote:
> On 2018年03月16日 18:04, Tiwei Bie wrote:
> > On Fri, Mar 16, 2018 at 04:34:28PM +0800, Jason Wang wrote:
> > > On 2018年03月16日 15:40, Tiwei Bie wrote:
> > > > On Fri, Mar 16, 2018 at 02:44:12PM +0800, Jason Wa
> > No.
> > > Hmm.. Sorry, I didn't describe my question well.
> > > I mean do you have any suggestions about the API
> > > design for packed ring in uapi header? Currently
> > > I introduced below two new helpers:
> > >
> > > static inline void vring_packed_init(struct vring_packed *vr, unsigned
> > > int num,
> > >void *p, unsigned long align);
> > > static inline unsigned vring_packed_size(unsigned int num, unsigned long
> > > align);
> > >
> > > When new rings are introduced in the future, above
> > > helpers can't be reused. Maybe we should make the
> > > helpers be able to determine the ring type?
> >
> > Let's wait for Michael's comment here. Generally, I fail to understand why
> > vring_init() become a part of uapi. Git grep shows the only use cases are
> > virtio_test/vringh_test.
> >
> > Thanks
>
> For init - I think it's a mistake that stems from lguest which sometimes
> made it less than obvious which code is where. I don't see a reason to
> add to it.
Got it! I'll move vring_packed_init() out of uapi. Many thanks! :)
Best regards,
Tiwei Bie
>
> --
> MST
On Tue, Apr 10, 2018 at 10:55:25AM +0800, Jason Wang wrote:
> On 2018年04月01日 22:12, Tiwei Bie wrote:
> > Hello everyone,
> >
> > This RFC implements packed ring support for virtio driver.
> >
> > The code was tested with DPDK vhost (testpmd/vhost-PMD) implement
On Tue, Apr 10, 2018 at 10:52:52AM +0800, Jason Wang wrote:
> On 2018年04月02日 23:23, Tiwei Bie wrote:
> > This patch introduces a mdev (mediated device) based hardware
> > vhost backend. This backend is an abstraction of the various
> > hardware vhost accelerators (potentially
On Fri, Nov 30, 2018 at 04:10:55PM +0800, Jason Wang wrote:
>
> On 2018/11/21 下午6:03, Tiwei Bie wrote:
> > Add types and macros for packed ring.
> >
> > Signed-off-by: Tiwei Bie
> > ---
> > include/uapi/linux/virtio_config.h | 3 +++
> >
On Fri, Nov 30, 2018 at 08:52:42AM -0500, Michael S. Tsirkin wrote:
> On Fri, Nov 30, 2018 at 02:01:06PM +0100, Maxime Coquelin wrote:
> > On 11/30/18 1:47 PM, Michael S. Tsirkin wrote:
> > > On Fri, Nov 30, 2018 at 05:53:40PM +0800, Tiwei Bie wrote:
> > > > On F
Introduce _SPLIT_ and/or _PACKED_ variants for VRING_DESC_F_*,
VRING_AVAIL_F_NO_INTERRUPT and VRING_USED_F_NO_NOTIFY. These
variants are defined as shifts instead of shifted values for
consistency with other _F_ flags.
Suggested-by: Michael S. Tsirkin
Signed-off-by: Tiwei Bie
---
include/uapi
This is a follow up of the discussion in this thread:
https://patchwork.ozlabs.org/patch/1001015/#2042353
Tiwei Bie (3):
virtio_ring: define flags as shifts consistently
virtio_ring: add VIRTIO_RING_NO_LEGACY
virtio_ring: use new vring flags
drivers/virtio/virtio_ring.c | 100
Switch to using the _SPLIT_ and _PACKED_ variants of vring flags
in split ring and packed ring respectively.
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 100 +--
1 file changed, 59 insertions(+), 41 deletions(-)
diff --git a/drivers/virtio
Introduce VIRTIO_RING_NO_LEGACY to support disabling legacy
macros and layout definitions.
Suggested-by: Michael S. Tsirkin
Signed-off-by: Tiwei Bie
---
VRING_AVAIL_ALIGN_SIZE, VRING_USED_ALIGN_SIZE and VRING_DESC_ALIGN_SIZE
are not pre-virtio 1.0, but can also be disabled by
On Fri, Dec 07, 2018 at 01:11:42PM -0500, Michael S. Tsirkin wrote:
> On Fri, Dec 07, 2018 at 04:48:39PM +0800, Tiwei Bie wrote:
> > This is a follow up of the discussion in this thread:
> > https://patchwork.ozlabs.org/patch/1001015/#2042353
>
> How was this tested? I'
On Fri, Dec 07, 2018 at 01:05:35PM -0500, Michael S. Tsirkin wrote:
> On Fri, Dec 07, 2018 at 04:48:41PM +0800, Tiwei Bie wrote:
> > Introduce VIRTIO_RING_NO_LEGACY to support disabling legacy
> > macros and layout definitions.
> >
> > Suggested-by: Michael S. Tsirki
On Fri, Dec 07, 2018 at 01:10:48PM -0500, Michael S. Tsirkin wrote:
> On Fri, Dec 07, 2018 at 04:48:42PM +0800, Tiwei Bie wrote:
> > Switch to using the _SPLIT_ and _PACKED_ variants of vring flags
> > in split ring and packed ring respectively.
> >
> &g
On Fri, May 25, 2018 at 10:31:26AM +0800, Jason Wang wrote:
> On 2018年05月22日 16:16, Tiwei Bie wrote:
> > Hello everyone,
> >
> > This RFC implements packed ring support in virtio driver.
> >
> > Some simple functional tests have been done with Jason's
> &
Suggested-by: Michael S. Tsirkin
Signed-off-by: Tiwei Bie
---
This patch is generated on top of below patch:
https://lists.oasis-open.org/archives/virtio-dev/201805/msg00212.html
include/uapi/linux/virtio_config.h | 9 ++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a
On Thu, May 17, 2018 at 08:01:52PM +0800, Jason Wang wrote:
> On 2018年05月16日 22:33, Tiwei Bie wrote:
> > On Wed, May 16, 2018 at 10:05:44PM +0800, Jason Wang wrote:
> > > On 2018年05月16日 21:45, Tiwei Bie wrote:
> > > > On Wed, May 16, 2018 at 08:51:43PM +0800, Jason Wa
On Fri, May 18, 2018 at 09:17:05PM +0800, Jason Wang wrote:
> On 2018年05月18日 19:29, Tiwei Bie wrote:
> > On Thu, May 17, 2018 at 08:01:52PM +0800, Jason Wang wrote:
> > > On 2018年05月16日 22:33, Tiwei Bie wrote:
> > > > On Wed, May 16, 2018 at 10:05:44PM +0800, Jason Wa
On Wed, Oct 10, 2018 at 10:36:26AM -0400, Michael S. Tsirkin wrote:
> On Thu, Sep 13, 2018 at 05:47:29PM +0800, Jason Wang wrote:
> > On 2018年09月13日 16:59, Tiwei Bie wrote:
> > > > If what you say is true then we should take a careful look
> > > > and not sup
On Thu, Oct 11, 2018 at 09:48:48AM -0400, Michael S. Tsirkin wrote:
> On Thu, Oct 11, 2018 at 08:12:21PM +0800, Tiwei Bie wrote:
> > > > But if it's not too late, I second for a OUT_OF_ORDER feature.
> > > > Starting from in order can have much simpler code in
On Thu, Oct 11, 2018 at 10:17:15AM -0400, Michael S. Tsirkin wrote:
> On Thu, Oct 11, 2018 at 10:13:31PM +0800, Tiwei Bie wrote:
> > On Thu, Oct 11, 2018 at 09:48:48AM -0400, Michael S. Tsirkin wrote:
> > > On Thu, Oct 11, 2018 at 08:12:21PM +0800, Tiwei Bie wrote:
> > >
() for packed ring and split ring (Jason);
- Avoid using '%' operator (Jason);
- Rename free_head -> next_avail_idx (Jason);
- Add comments for virtio_wmb() in virtqueue_add_packed() (Jason);
- Some other refinements and bug fixes;
Thanks!
Tiwei Bie (5):
virtio: add packed ring
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 1ee52a89cb04..355dfef4f1eb 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -1956,6
This commit introduces the support for creating packed ring.
All split ring specific functions are added _split suffix.
Some necessary stubs for packed ring are also added.
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 801 +++
include/linux
This commit introduces the EVENT_IDX support in packed ring.
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 67 ++--
1 file changed, 64 insertions(+), 3 deletions(-)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index
This commit introduces the support (without EVENT_IDX) for
packed ring.
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 474 ++-
1 file changed, 468 insertions(+), 6 deletions(-)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio
Signed-off-by: Tiwei Bie
---
include/uapi/linux/virtio_config.h | 5 -
include/uapi/linux/virtio_ring.h | 36 ++
2 files changed, 40 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/virtio_config.h
b/include/uapi/linux/virtio_config.h
index
On Fri, Apr 27, 2018 at 02:17:51PM +0800, Jason Wang wrote:
> On 2018年04月27日 12:18, Michael S. Tsirkin wrote:
> > On Fri, Apr 27, 2018 at 11:56:05AM +0800, Jason Wang wrote:
> > > On 2018年04月25日 13:15, Tiwei Bie wrote:
> > > > Hello everyone,
> > > >
On Wed, May 02, 2018 at 10:51:06AM +0800, Jason Wang wrote:
> On 2018年04月25日 13:15, Tiwei Bie wrote:
> > This commit introduces the event idx support in packed
> > ring. This feature is temporarily disabled, because the
> > implementation in this patch may not work as e
On Mon, Apr 23, 2018 at 01:34:53PM +0800, Jason Wang wrote:
> Move get_rx_bufs() to vhost.c and rename it to
> vhost_get_rx_bufs(). This helps to hide vring internal layout from
A small typo. Based on the code change in this patch, it
seems that this function is renamed to vhost_get_bufs().
Thank
On Wed, May 02, 2018 at 04:51:01PM +0300, Michael S. Tsirkin wrote:
> On Wed, May 02, 2018 at 03:28:19PM +0800, Tiwei Bie wrote:
> > On Wed, May 02, 2018 at 10:51:06AM +0800, Jason Wang wrote:
> > > On 2018年04月25日 13:15, Tiwei Bie wrote:
> > > > This commit intro
On Wed, May 02, 2018 at 06:42:57PM +0300, Michael S. Tsirkin wrote:
> On Wed, May 02, 2018 at 11:12:55PM +0800, Tiwei Bie wrote:
> > On Wed, May 02, 2018 at 04:51:01PM +0300, Michael S. Tsirkin wrote:
> > > On Wed, May 02, 2018 at 03:28:19PM +0800, Tiwei Bie wrote:
> > >
On Thu, May 03, 2018 at 04:44:39AM +0300, Michael S. Tsirkin wrote:
> On Thu, May 03, 2018 at 09:11:16AM +0800, Tiwei Bie wrote:
> > On Wed, May 02, 2018 at 06:42:57PM +0300, Michael S. Tsirkin wrote:
> > > On Wed, May 02, 2018 at 11:12:55PM +0800, Tiwei Bie wrote:
> > >
This patch introduces the support for VIRTIO_F_IO_BARRIER.
When this feature is negotiated, driver will use the barriers
suitable for hardware devices.
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 5 +
include/uapi/linux/virtio_config.h | 8 +++-
2 files changed, 12
On Thu, May 03, 2018 at 03:30:03PM +0800, Jason Wang wrote:
> On 2018年05月03日 10:59, Tiwei Bie wrote:
> > This patch introduces the support for VIRTIO_F_IO_BARRIER.
> > When this feature is negotiated, driver will use the barriers
> > suitable for hardware devices.
> >
&
On Tue, May 29, 2018 at 11:18:57AM +0800, Jason Wang wrote:
> On 2018年05月22日 16:16, Tiwei Bie wrote:
[...]
> > +static void detach_buf_packed(struct vring_virtqueue *vq,
> > + unsigned int id, void **ctx)
> > +{
> > + struct vring_desc_state_pa
On Tue, May 29, 2018 at 10:49:11AM +0800, Jason Wang wrote:
> On 2018年05月22日 16:16, Tiwei Bie wrote:
> > This commit introduces the support for creating packed ring.
> > All split ring specific functions are added _split suffix.
> > Some necessary stubs for packe
On Wed, May 16, 2018 at 01:01:04PM +0800, Jason Wang wrote:
> On 2018年04月25日 13:15, Tiwei Bie wrote:
[...]
> > @@ -1143,10 +1160,17 @@ static unsigned
> > virtqueue_enable_cb_prepare_packed(struct virtqueue *_vq)
> > /* We optimistically turn back on interrupts, th
e() for packed ring and split ring (Jason);
- Avoid using '%' operator (Jason);
- Rename free_head -> next_avail_idx (Jason);
- Add comments for virtio_wmb() in virtqueue_add_packed() (Jason);
- Some other refinements and bug fixes;
Thanks!
Tiwei Bie (5):
virtio: add packed rin
This commit introduces the support for creating packed ring.
All split ring specific functions are added _split suffix.
Some necessary stubs for packed ring are also added.
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 764 +++
include/linux
This commit introduces the basic support (without EVENT_IDX)
for packed ring.
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 491 ++-
1 file changed, 481 insertions(+), 10 deletions(-)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index de3839f3621a..b158692263b0 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -1940,6
This commit introduces the event idx support in
packed ring.
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 75 +---
1 file changed, 70 insertions(+), 5 deletions(-)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index
Signed-off-by: Tiwei Bie
---
include/uapi/linux/virtio_config.h | 12 +-
include/uapi/linux/virtio_ring.h | 36 ++
2 files changed, 47 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/virtio_config.h
b/include/uapi/linux/virtio_config.h
index
On Wed, May 16, 2018 at 01:15:48PM +0300, Sergei Shtylyov wrote:
> On 5/16/2018 11:37 AM, Tiwei Bie wrote:
>
> > Signed-off-by: Tiwei Bie
> > ---
> > drivers/virtio/virtio_ring.c | 2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/dri
On Wed, May 16, 2018 at 02:42:53PM +0300, Sergei Shtylyov wrote:
> On 05/16/2018 01:21 PM, Tiwei Bie wrote:
>
> >>> Signed-off-by: Tiwei Bie
> >>> ---
> >>> drivers/virtio/virtio_ring.c | 2 ++
> >>> 1 file changed, 2 insertions(+)
&
On Wed, May 16, 2018 at 07:50:16PM +0800, Jason Wang wrote:
> On 2018年05月16日 16:37, Tiwei Bie wrote:
[...]
> > struct vring_virtqueue {
> > @@ -116,6 +117,9 @@ struct vring_virtqueue {
> > /* Last written value to driver->flags in
> >
On Wed, May 16, 2018 at 08:17:21PM +0800, Jason Wang wrote:
> On 2018年05月16日 16:37, Tiwei Bie wrote:
[...]
> > @@ -1160,15 +1186,27 @@ static void virtqueue_disable_cb_packed(struct
> > virtqueue *_vq)
> > static unsigned virtqueue_enable_cb_prepare_packed(
On Wed, May 16, 2018 at 08:51:43PM +0800, Jason Wang wrote:
> On 2018年05月16日 20:39, Tiwei Bie wrote:
> > On Wed, May 16, 2018 at 07:50:16PM +0800, Jason Wang wrote:
> > > On 2018年05月16日 16:37, Tiwei Bie wrote:
> > [...]
> > > >struct vring_virtqueue
On Wed, May 16, 2018 at 10:05:44PM +0800, Jason Wang wrote:
> On 2018年05月16日 21:45, Tiwei Bie wrote:
> > On Wed, May 16, 2018 at 08:51:43PM +0800, Jason Wang wrote:
> > > On 2018年05月16日 20:39, Tiwei Bie wrote:
> > > > On Wed, May 16, 2018 at 07:50:16PM +0800, Jason Wa
d_packed() (Jason);
- Some other refinements and bug fixes;
Thanks!
Tiwei Bie (5):
virtio: add packed ring definitions
virtio_ring: support creating packed ring
virtio_ring: add packed ring support
virtio_ring: add event idx support in packed ring
virtio_ring: enable packed rin
This commit introduces the support for creating packed ring.
All split ring specific functions are added _split suffix.
Some necessary stubs for packed ring are also added.
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 764 ---
include/linux
kick is needed?
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 53
1 file changed, 49 insertions(+), 4 deletions(-)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 0181e93897be..b1039c2985b9 100644
--- a
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index b1039c2985b9..9a3d13e1e2ba 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -1873,6
This commit introduces the basic support (without EVENT_IDX)
for packed ring.
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 444 ++-
1 file changed, 434 insertions(+), 10 deletions(-)
diff --git a/drivers/virtio/virtio_ring.c b/drivers
Signed-off-by: Tiwei Bie
---
include/uapi/linux/virtio_config.h | 12 +++-
include/uapi/linux/virtio_ring.h | 36
2 files changed, 47 insertions(+), 1 deletion(-)
diff --git a/include/uapi/linux/virtio_config.h
b/include/uapi/linux/virtio_config.h
On Mon, Sep 02, 2019 at 12:15:05PM +0800, Jason Wang wrote:
> On 2019/8/28 下午1:37, Tiwei Bie wrote:
> > Details about this can be found here:
> >
> > https://lwn.net/Articles/750770/
> >
> > What's new in this version
> > ==
&
On Tue, Sep 03, 2019 at 07:26:03AM -0400, Michael S. Tsirkin wrote:
> On Wed, Aug 28, 2019 at 01:37:12PM +0800, Tiwei Bie wrote:
> > Details about this can be found here:
> >
> > https://lwn.net/Articles/750770/
> >
> > What's new in this version
> > =
Since below commit, callers need to specify the iov_limit in
vhost_dev_init() explicitly.
Fixes: b46a0bf78ad7 ("vhost: fix OOB in get_rx_bufs()")
Cc: sta...@vger.kernel.org
Signed-off-by: Tiwei Bie
---
drivers/vhost/test.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
di
")
Cc: sta...@vger.kernel.org
Signed-off-by: Tiwei Bie
---
drivers/vhost/test.c | 13 +
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/vhost/test.c b/drivers/vhost/test.c
index ac4f762c4f65..7804869c6a31 100644
--- a/drivers/vhost/test.c
+++ b/drivers/vhost/
sed to setup the device.
And the device will report device_api as "vfio-vhost".
Note that, there are dirty hacks in this version. If we decide to
go this way, some refactoring in vhost.c/vhost.h may be needed.
PS. The direct mapping of the notify registers isn't implemented
On Tue, Sep 10, 2019 at 04:19:34PM +0800, Jason Wang wrote:
> This path introduces a new mdev transport for virtio. This is used to
> use kernel virtio driver to drive the mediated device that is capable
> of populating virtqueue directly.
>
> A new virtio-mdev driver will be registered to the mde
On Wed, Sep 11, 2019 at 10:52:03AM +0800, Jason Wang wrote:
> On 2019/9/11 上午9:47, Tiwei Bie wrote:
> > On Tue, Sep 10, 2019 at 04:19:34PM +0800, Jason Wang wrote:
> > > This path introduces a new mdev transport for virtio. This is used to
> > > use kernel virtio d
do VHOST_MDEV_SET_BACKEND ioctl with VFIO group fd and device
fd first before doing other vhost ioctls);
Only compile test has been done for this series for now.
RFCv3: https://patchwork.kernel.org/patch/7785/
[1] https://lkml.org/lkml/2019/9/10/135
Tiwei Bie (3):
vfio: support getting
This patch introduces the support for getting VFIO device
from VFIO device fd. With this support, it's possible for
vhost to get VFIO device from the group fd and device fd
set by the userspace.
Signed-off-by: Tiwei Bie
---
drivers/vfio/vfio.c | 25 +
include/
This patch introduces the support for checking the VFIO driver
by device ops. And vfio-mdev's device ops is also exported to
make it possible to check whether a VFIO device is based on a
mdev device.
Signed-off-by: Tiwei Bie
---
drivers/vfio/mdev/vfio_mdev.c | 3 ++-
drivers/vfio/v
More details about this patch can be found from the cover
letter for now. Only compile test has been done for now.
Signed-off-by: Tiwei Bie
---
drivers/vhost/Kconfig| 9 +
drivers/vhost/Makefile | 3 +
drivers/vhost/mdev.c | 462
On Tue, Sep 17, 2019 at 11:32:03AM +0800, Jason Wang wrote:
> On 2019/9/17 上午9:02, Tiwei Bie wrote:
> > This RFC is to demonstrate below ideas,
> >
> > a) Build vhost-mdev on top of the same abstraction defined in
> > the virtio-mdev series [1];
> >
>
On Thu, Sep 19, 2019 at 09:08:11PM +0800, Jason Wang wrote:
> On 2019/9/18 下午10:32, Michael S. Tsirkin wrote:
> > > > > So I have some questions:
> > > > >
> > > > > 1) Compared to method 2, what's the advantage of creating a new vhost
> > > > > char
> > > > > device? I guess it's for keep the AP
On Fri, Sep 20, 2019 at 09:30:58AM +0800, Jason Wang wrote:
> On 2019/9/19 下午11:45, Tiwei Bie wrote:
> > On Thu, Sep 19, 2019 at 09:08:11PM +0800, Jason Wang wrote:
> > > On 2019/9/18 下午10:32, Michael S. Tsirkin wrote:
> > > > > > > So I have some qu
On Tue, Sep 17, 2019 at 03:26:30PM +0800, Jason Wang wrote:
> On 2019/9/17 上午9:02, Tiwei Bie wrote:
> > diff --git a/drivers/vhost/mdev.c b/drivers/vhost/mdev.c
> > new file mode 100644
> > index ..8c6597aff45e
> > --- /dev/null
> > +++ b/driver
this device, userspace can use vhost ioctls
to setup the backend.
Signed-off-by: Tiwei Bie
---
This patch depends on below series:
https://lkml.org/lkml/2019/9/24/357
RFC v4 -> v1:
- Implement vhost-mdev as a mdev device driver directly and
connect it to VFIO container/group. (Jason);
- P
On Thu, Sep 26, 2019 at 04:35:18AM -0400, Michael S. Tsirkin wrote:
> On Thu, Sep 26, 2019 at 12:54:27PM +0800, Tiwei Bie wrote:
[...]
> > diff --git a/include/uapi/linux/vhost.h b/include/uapi/linux/vhost.h
> > index 40d028eed645..5afbc2f08fa3 100644
> > --- a/include/uapi/li
On Thu, Sep 26, 2019 at 09:26:22AM -0400, Michael S. Tsirkin wrote:
> On Thu, Sep 26, 2019 at 09:14:39PM +0800, Tiwei Bie wrote:
> > > 4. Does device need to limit max ring size?
> > > 5. Does device need to limit max number of queues?
> >
> > I think so. It'
On Fri, Sep 27, 2019 at 11:51:35AM +0800, Jason Wang wrote:
> On 2019/9/27 上午11:46, Jason Wang wrote:
> > +
> > +static struct mdev_class_id id_table[] = {
> > + { MDEV_ID_VHOST },
> > + { 0 },
> > +};
> > +
> > +static struct mdev_driver vhost_mdev_driver = {
> > + .name = "vhost_mdev"
On Fri, Sep 27, 2019 at 11:46:06AM +0800, Jason Wang wrote:
> On 2019/9/26 下午12:54, Tiwei Bie wrote:
> > +
> > +static long vhost_mdev_start(struct vhost_mdev *m)
> > +{
> > + struct mdev_device *mdev = m->mdev;
> > + const struct virtio_mdev_dev
On Fri, Sep 27, 2019 at 03:14:42PM +0800, Jason Wang wrote:
> On 2019/9/27 下午12:54, Tiwei Bie wrote:
> > > > +
> > > > + /*
> > > > +* In vhost-mdev, userspace should pass ring addresses
> > > > +* in
this device, userspace can use vhost ioctls
to setup the backend.
Signed-off-by: Tiwei Bie
---
This patch depends on below series:
https://lkml.org/lkml/2019/10/17/286
v1 -> v2:
- Replace _SET_STATE with _SET_STATUS (MST);
- Check status bits at each step (MST);
- Report the max ring size and
On Tue, Oct 22, 2019 at 09:30:16PM +0800, Jason Wang wrote:
> On 2019/10/22 下午5:52, Tiwei Bie wrote:
> > This patch introduces a mdev based hardware vhost backend.
> > This backend is built on top of the same abstraction used
> > in virtio-mdev and provides a generi
On Wed, Oct 23, 2019 at 01:46:23PM +0800, Jason Wang wrote:
> On 2019/10/23 上午11:02, Tiwei Bie wrote:
> > On Tue, Oct 22, 2019 at 09:30:16PM +0800, Jason Wang wrote:
> > > On 2019/10/22 下午5:52, Tiwei Bie wrote:
> > > > This patch introduces a mdev based hardware vhost
On Wed, Oct 23, 2019 at 03:25:00PM +0800, Jason Wang wrote:
> On 2019/10/23 下午3:07, Tiwei Bie wrote:
> > On Wed, Oct 23, 2019 at 01:46:23PM +0800, Jason Wang wrote:
> > > On 2019/10/23 上午11:02, Tiwei Bie wrote:
> > > > On Tue, Oct 22, 2019 at 09:30:16PM +0800, Jason
This patch introduces the support for VIRTIO_F_ORDER_PLATFORM.
When this feature is negotiated, driver will use the barriers
suitable for hardware devices.
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 8
include/uapi/linux/virtio_config.h | 6 ++
2 files
On Tue, Jan 22, 2019 at 11:04:29PM -0500, Michael S. Tsirkin wrote:
> On Wed, Jan 23, 2019 at 01:03:46AM +0800, Tiwei Bie wrote:
> > This patch introduces the support for VIRTIO_F_ORDER_PLATFORM.
> > When this feature is negotiated, driver will use the barriers
> > suitable
but not accepted.
Signed-off-by: Tiwei Bie
---
v2:
- Add more explanations in commit log (MST);
drivers/virtio/virtio_ring.c | 8
include/uapi/linux/virtio_config.h | 6 ++
2 files changed, 14 insertions(+)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio
On Fri, Feb 01, 2019 at 05:16:01PM -0500, Michael S. Tsirkin wrote:
> There's no reason to expose struct vring_packed in UAPI - if we do we
> won't be able to change or drop it, and it's not part of any interface.
>
> Let's move it to virtio_ring.c
>
> Cc:
zeof(queue_idx),
vfio->notify_offset + offset);
..
}
3. VFIO interrupt ioctl API
VFIO interrupt ioctl API is used to setup device interrupts.
IRQ-bypass can also be supported.
Currently, the data path interrupt can be configured via the
VFIO_VHOST_VQ_IR
On Wed, Jul 03, 2019 at 06:09:51PM +0800, Jason Wang wrote:
> On 2019/7/3 下午5:13, Tiwei Bie wrote:
> > Details about this can be found here:
> >
> > https://lwn.net/Articles/750770/
> >
> > What's new in this version
> > ==
&
On Wed, Jul 03, 2019 at 08:16:23PM +0800, Jason Wang wrote:
> On 2019/7/3 下午7:52, Tiwei Bie wrote:
> > On Wed, Jul 03, 2019 at 06:09:51PM +0800, Jason Wang wrote:
> > > On 2019/7/3 下午5:13, Tiwei Bie wrote:
> > > > Details about this can be found here:
> > &
On Wed, Jul 03, 2019 at 12:31:57PM -0600, Alex Williamson wrote:
> On Wed, 3 Jul 2019 17:13:39 +0800
> Tiwei Bie wrote:
> > diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
> > index 8f10748dac79..6c5718ab7eeb 100644
> > --- a/include/uapi/linux/vfio.
On Thu, Jul 04, 2019 at 12:31:48PM +0800, Jason Wang wrote:
> On 2019/7/3 下午9:08, Tiwei Bie wrote:
> > On Wed, Jul 03, 2019 at 08:16:23PM +0800, Jason Wang wrote:
> > > On 2019/7/3 下午7:52, Tiwei Bie wrote:
> > > > On Wed, Jul 03, 2019 at 06:09:51PM +0800, Jason Wang w
On Thu, Jul 04, 2019 at 02:35:20PM +0800, Jason Wang wrote:
> On 2019/7/4 下午2:21, Tiwei Bie wrote:
> > On Thu, Jul 04, 2019 at 12:31:48PM +0800, Jason Wang wrote:
> > > On 2019/7/3 下午9:08, Tiwei Bie wrote:
> > > > On Wed, Jul 03, 2019 at 08:16:23PM +0800, Jason Wang w
On Fri, Jul 05, 2019 at 08:30:00AM +0800, Jason Wang wrote:
> On 2019/7/4 下午3:02, Tiwei Bie wrote:
> > On Thu, Jul 04, 2019 at 02:35:20PM +0800, Jason Wang wrote:
> > > On 2019/7/4 下午2:21, Tiwei Bie wrote:
> > > > On Thu, Jul 04, 2019 at 12:31:48PM +0800, Jason Wang w
On Fri, Jul 05, 2019 at 08:49:46AM -0600, Alex Williamson wrote:
> On Thu, 4 Jul 2019 14:21:34 +0800
> Tiwei Bie wrote:
> > On Thu, Jul 04, 2019 at 12:31:48PM +0800, Jason Wang wrote:
> > > On 2019/7/3 下午9:08, Tiwei Bie wrote:
> > > > On Wed, Jul 03, 2019 at 0
On Tue, Jul 09, 2019 at 10:50:38AM +0800, Jason Wang wrote:
> On 2019/7/8 下午2:16, Tiwei Bie wrote:
> > On Fri, Jul 05, 2019 at 08:49:46AM -0600, Alex Williamson wrote:
> > > On Thu, 4 Jul 2019 14:21:34 +0800
> > > Tiwei Bie wrote:
> > > > On Thu, Jul 04, 201
On Wed, Jul 10, 2019 at 10:26:10AM +0800, Jason Wang wrote:
> On 2019/7/9 下午2:33, Tiwei Bie wrote:
> > On Tue, Jul 09, 2019 at 10:50:38AM +0800, Jason Wang wrote:
> > > On 2019/7/8 下午2:16, Tiwei Bie wrote:
> > > > On Fri, Jul 05, 2019 at 08:49:46AM -0600, Alex William
On Thu, Jun 07, 2018 at 05:50:32PM +0800, Jason Wang wrote:
> On 2018年06月05日 15:40, Tiwei Bie wrote:
> > static bool virtqueue_enable_cb_delayed_packed(struct virtqueue *_vq)
> > {
> > struct vring_virtqueue *vq = to_vvq(_vq);
> > + u16 bufs, used_idx, wrap_co
On Sat, May 19, 2018 at 09:12:30AM +0800, Jason Wang wrote:
> On 2018年05月18日 22:33, Tiwei Bie wrote:
> > On Fri, May 18, 2018 at 09:17:05PM +0800, Jason Wang wrote:
> > > On 2018年05月18日 19:29, Tiwei Bie wrote:
> > > > On Thu, May 17, 2018 at 08:01:52PM +0800, Jason Wa
On Mon, May 21, 2018 at 10:30:51AM +0800, Jason Wang wrote:
> On 2018年05月19日 10:29, Tiwei Bie wrote:
> > > I don't hope so.
> > >
> > > > I agreed driver should track the DMA addrs or some
> > > > other necessary things from the very beginning.
On Mon, Mar 26, 2018 at 11:38:53AM +0800, Jason Wang wrote:
> This patch introduces basic support for event suppression aka driver
> and device area. Compile tested only.
>
> Signed-off-by: Jason Wang
> ---
[...]
> +
> +static bool vhost_notify_packed(struct vhost_dev *dev,
> +
queue_add_packed() (Jason);
- Some other refinements and bug fixes;
Thanks!
Signed-off-by: Tiwei Bie
---
drivers/virtio/virtio_ring.c | 1094 +---
include/linux/virtio_ring.h|8 +-
include/uapi/linux/virtio_config.h | 12 +-
include/uapi/lin
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