On 2019/9/23 下午5:12, wangxu (AE) wrote:
Hi Michael
Thanks for your fast reply.
As the following code, the 2nd branch of iov_iter_advance() does not check if
i->count < size, when this happens, i->count -= size may cause len exceed
INT_MAX, and then total_len exceed INT_MAX.
On 2019/9/24 下午3:21, Ding Xiang wrote:
platform_get_irq already contains error message,
Is this message contained in all possible error path? If not, it's
probably better to keep it as is.
Thanks
so remove
the redundant dev_err message
Signed-off-by: Ding Xiang
---
On Tue, 24 Sep 2019 21:53:30 +0800
Jason Wang wrote:
> This patch implements basic support for mdev driver that supports
> virtio transport for kernel virtio driver.
>
> Signed-off-by: Jason Wang
> ---
> include/linux/mdev.h| 2 +
> include/linux/virtio_mdev.h | 145
On Tue, 24 Sep 2019 21:53:26 +0800
Jason Wang wrote:
> Mdev bus only supports vfio driver right now, so it doesn't implement
> match method. But in the future, we may add drivers other than vfio,
> the first driver could be virtio-mdev. This means we need to add
> device class id support in bus
On Tue, 24 Sep 2019 21:53:29 +0800
Jason Wang wrote:
> Currently, except for the create and remove, the rest of
> mdev_parent_ops is designed for vfio-mdev driver only and may not help
> for kernel mdev driver. With the help of class id, this patch
> introduces device specific callbacks inside
On Mon, 23 Sep 2019 12:00:41 -0400
"Michael S. Tsirkin" wrote:
> On Mon, Sep 23, 2019 at 09:45:59AM -0600, Alex Williamson wrote:
> > On Mon, 23 Sep 2019 21:03:30 +0800
> > Jason Wang wrote:
> >
> > > We want to copy from iov to buf, so the direction was wrong.
> > >
> > > Signed-off-by:
This sample driver creates mdev device that simulate virtio net device
over virtio mdev transport. The device is implemented through vringh
and workqueue. A device specific dma ops is to make sure HVA is used
directly as the IOVA. This should be sufficient for kernel virtio
driver to work.
Only
This patch 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 mdev bus, when a
new virtio-mdev device is probed, it will register the
This patch implements basic support for mdev driver that supports
virtio transport for kernel virtio driver.
Signed-off-by: Jason Wang
---
include/linux/mdev.h| 2 +
include/linux/virtio_mdev.h | 145
2 files changed, 147 insertions(+)
create mode
Currently, except for the create and remove, the rest of
mdev_parent_ops is designed for vfio-mdev driver only and may not help
for kernel mdev driver. With the help of class id, this patch
introduces device specific callbacks inside mdev_device
structure. This allows different set of callback to
This patch adds bus uevent support for mdev bus in order to allow
cooperation with userspace.
Signed-off-by: Jason Wang
---
drivers/vfio/mdev/mdev_driver.c | 8
1 file changed, 8 insertions(+)
diff --git a/drivers/vfio/mdev/mdev_driver.c b/drivers/vfio/mdev/mdev_driver.c
index
Add support to parse mdev class id table.
Signed-off-by: Jason Wang
---
drivers/vfio/mdev/vfio_mdev.c | 2 ++
scripts/mod/devicetable-offsets.c | 3 +++
scripts/mod/file2alias.c | 10 ++
3 files changed, 15 insertions(+)
diff --git a/drivers/vfio/mdev/vfio_mdev.c
Mdev bus only supports vfio driver right now, so it doesn't implement
match method. But in the future, we may add drivers other than vfio,
the first driver could be virtio-mdev. This means we need to add
device class id support in bus match method to pair the mdev device
and mdev driver correctly.
We want to copy from iov to buf, so the direction was wrong.
Signed-off-by: Jason Wang
---
drivers/vhost/vringh.c | 8 +++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c
index 08ad0d1f0476..a0a2d74967ef 100644
---
Hi all:
There are hardware that can do virtio datapath offloading while having
its own control path. This path tries to implement a mdev based
unified API to support using kernel virtio driver to drive those
devices. This is done by introducing a new mdev transport for virtio
(virtio_mdev) and
On 2019/9/24 上午6:28, Parav Pandit wrote:
>
>> -Original Message-
>> From: Jason Wang
>> Sent: Monday, September 23, 2019 8:03 AM
>> To: k...@vger.kernel.org; linux-s...@vger.kernel.org; linux-
>> ker...@vger.kernel.org; dri-de...@lists.freedesktop.org; intel-
>>
On 2019/9/24 上午6:59, Parav Pandit wrote:
>
>> -Original Message-
>> From: Jason Wang
>> Sent: Monday, September 23, 2019 8:03 AM
>> To: k...@vger.kernel.org; linux-s...@vger.kernel.org; linux-
>> ker...@vger.kernel.org; dri-de...@lists.freedesktop.org; intel-
>>
On 2019/9/23 下午11:36, Michael S. Tsirkin wrote:
> On Mon, Sep 23, 2019 at 11:20:12PM +0800, kbuild test robot wrote:
>> Hi Jason,
>>
>> I love your patch! Yet something to improve:
>>
>> [auto build test ERROR on linus/master]
>> [cannot apply to v5.3 next-20190920]
>> [if your patch is applied
On 2019/9/24 上午5:02, Parav Pandit wrote:
> Hi Jason,
>
>
>> -Original Message-
>> From: Jason Wang
>> Sent: Monday, September 23, 2019 8:03 AM
>> To: k...@vger.kernel.org; linux-s...@vger.kernel.org; linux-
>> ker...@vger.kernel.org; dri-de...@lists.freedesktop.org; intel-
>>
On 2019/9/24 上午4:58, Parav Pandit wrote:
> Hi Jason,
>
>> -Original Message-
>> From: Jason Wang
>> Sent: Monday, September 23, 2019 8:03 AM
>> To: k...@vger.kernel.org; linux-s...@vger.kernel.org; linux-
>> ker...@vger.kernel.org; dri-de...@lists.freedesktop.org; intel-
>>
On 2019/9/24 上午12:05, Alex Williamson wrote:
> On Mon, 23 Sep 2019 21:03:26 +0800
> Jason Wang wrote:
>
>> Mdev bus only supports vfio driver right now, so it doesn't implement
>> match method. But in the future, we may add drivers other than vfio,
>> one example is virtio-mdev[1] driver. This
On 05.09.19 15:34, Jaak Ristioja wrote:
> On 05.09.19 10:14, Gerd Hoffmann wrote:
>> On Tue, Aug 06, 2019 at 09:00:10PM +0300, Jaak Ristioja wrote:
>>> Hello!
>>>
>>> I'm writing to report a crash in the QXL / DRM code in the Linux kernel.
>>> I originally filed the issue on LaunchPad and more
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