> From: Zhu Lingshan
> Sent: Friday, July 1, 2022 9:28 AM
>
> This commit fixes spars warnings: cast to restricted __le16 in function
> vdpa_dev_net_config_fill() and
> vdpa_fill_stats_rec()
>
Missing fixes tag.
But I fail to understand the warning.
config.status is le16, and API used is to
> From: Zhu Lingshan
> Sent: Friday, July 1, 2022 9:28 AM
>
> Users may want to query the config space of a vDPA device, to choose a
> appropriate one for a certain guest. This means the users need to read the
> config space before FEATURES_OK, and the existence of config space
> contents
> From: Zhu Lingshan
> Sent: Friday, July 1, 2022 9:28 AM
> If VIRTIO_NET_F_MQ == 0, the virtio device should have one queue pair, so
> when userspace querying queue pair numbers, it should return mq=1 than
> zero.
>
> Function vdpa_dev_net_config_fill() fills the attributions of the vDPA
>
> From: Zhu Lingshan
> Sent: Friday, July 1, 2022 9:28 AM
>
> This commit adds a new vDPA netlink attribution
> VDPA_ATTR_VDPA_DEV_SUPPORTED_FEATURES. Userspace can query
> features of vDPA devices through this new attr.
>
> Fixes: a64917bc2e9b vdpa: (Provide interface to read driver
On 01/07/2022 5:43 pm, Nicolin Chen wrote:
On Fri, Jul 01, 2022 at 11:21:48AM +0100, Robin Murphy wrote:
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c
b/drivers/iommu/arm/arm-smmu/arm-smmu.c
index 2ed3594f384e..072cac5ab5a4 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu.c
+++
* Indexed in Scopus, WoS, DBLP, etc.
* Google Scholar H5-Index = 15
ICITS'23 - The 6th International Conference on Information Technology & Systems
Cusco, Peru, 8 - 10 February
On 2022-06-30 21:36, Nicolin Chen wrote:
Cases like VFIO wish to attach a device to an existing domain that was
not allocated specifically from the device. This raises a condition
where the IOMMU driver can fail the domain attach because the domain and
device are incompatible with each other.
在 2022/6/29 14:56, Xuan Zhuo 写道:
Introduce new helpers to implement queue reset and get queue reset
status.
https://github.com/oasis-tcs/virtio-spec/issues/124
https://github.com/oasis-tcs/virtio-spec/issues/139
Signed-off-by: Xuan Zhuo
Acked-by: Jason Wang
---
在 2022/7/1 14:31, Michael S. Tsirkin 写道:
On Wed, Jun 29, 2022 at 02:56:41PM +0800, Xuan Zhuo wrote:
This patch allows the new introduced
__virtqueue_break()/__virtqueue_unbreak() to break/unbreak the
virtqueue.
Signed-off-by: Xuan Zhuo
I wonder how this interacts with the hardening patches.
在 2022/6/29 14:56, Xuan Zhuo 写道:
Add queue_notify_data in struct virtio_pci_common_cfg, which comes from
here https://github.com/oasis-tcs/virtio-spec/issues/89
Since I want to add queue_reset after queue_notify_data, I submitted
this patch first.
Signed-off-by: Xuan Zhuo
Acked-by: Jason
在 2022/6/29 14:56, Xuan Zhuo 写道:
In order to facilitate the expansion of virtio_pci_common_cfg in the
future, move it from uapi to virtio_pci_modern.h. In this way, we can
freely expand virtio_pci_common_cfg in the future.
Other projects using virtio_pci_common_cfg in uapi need to maintain a
在 2022/6/29 14:56, Xuan Zhuo 写道:
Introduce virtqueue_resize() to implement the resize of vring.
Based on these, the driver can dynamically adjust the size of the vring.
For example: ethtool -G.
virtqueue_resize() implements resize based on the vq reset function. In
case of failure to allocate
在 2022/6/29 14:56, Xuan Zhuo 写道:
virtio ring packed supports resize.
Only after the new vring is successfully allocated based on the new num,
we will release the old vring. In any case, an error is returned,
indicating that the vring still points to the old vring.
In the case of an error,
在 2022/6/29 14:56, Xuan Zhuo 写道:
virtio ring split supports resize.
Only after the new vring is successfully allocated based on the new num,
we will release the old vring. In any case, an error is returned,
indicating that the vring still points to the old vring.
In the case of an error,
在 2022/6/29 14:56, Xuan Zhuo 写道:
In vring_create_virtqueue_split() save vring_align, may_reduce_num to
structure vring_virtqueue_split. Used to create a new vring when
implementing resize .
Signed-off-by: Xuan Zhuo
Acked-by: Jason Wang
---
drivers/virtio/virtio_ring.c | 9 +
在 2022/6/29 14:56, Xuan Zhuo 写道:
Separate the logic of initializing vring, and subsequent patches will
call it separately.
This function completes the variable initialization of split vring. It
together with the logic of atatch constitutes the initialization of
vring.
Signed-off-by: Xuan Zhuo
在 2022/6/29 14:56, Xuan Zhuo 写道:
Separate the logic of attach vring, subsequent patches will call it
separately.
Since the "struct vring_virtqueue_split split" is created on the
stack and has been initialized to 0. So using
split->queue_dma_addr/split->queue_size_in_bytes assignment for
在 2022/6/29 14:56, Xuan Zhuo 写道:
Separate the logic of creating desc_state, desc_extra, and subsequent
patches will call it independently.
Since only the structure vring is passed into __vring_new_virtqueue(),
when creating the function vring_alloc_state_extra_split(), we prefer to
use
On Fri, 1 Jul 2022 16:26:25 +0800, Jason Wang wrote:
>
> 在 2022/6/29 14:56, Xuan Zhuo 写道:
> > Separate the logic of split to create vring queue.
> >
> > This feature is required for subsequent virtuqueue reset vring.
> >
> > Signed-off-by: Xuan Zhuo
> > ---
> > drivers/virtio/virtio_ring.c |
在 2022/6/29 14:56, Xuan Zhuo 写道:
Separate the logic of split to create vring queue.
This feature is required for subsequent virtuqueue reset vring.
Signed-off-by: Xuan Zhuo
---
drivers/virtio/virtio_ring.c | 68 ++--
1 file changed, 42 insertions(+), 26
On Thu, Jun 30 2022, "Michael S. Tsirkin" wrote:
> This option doesn't really work and breaks too many drivers.
> Not yet sure what's the right thing to do, for now
> let's make sure randconfig isn't broken by this.
>
> Fixes: c346dae4f3fb ("virtio: disable notification hardening by default")
>
On Thu, 30 Jun 2022 14:35:38 +0800, Jason Wang wrote:
> On Wed, Jun 29, 2022 at 2:57 PM Xuan Zhuo wrote:
> >
> > Record the maximum queue num supported by the device.
> >
> > virtio-net can display the maximum (supported by hardware) ring size in
> > ethtool -g eth0.
> >
> > When the subsequent
On Fri, 1 Jul 2022 02:28:46 -0400, "Michael S. Tsirkin" wrote:
> On Wed, Jun 29, 2022 at 02:56:18PM +0800, Xuan Zhuo wrote:
> > reset can be divided into the following four steps (example):
> > 1. transport: notify the device to reset the queue
> > 2. vring: recycle the buffer submitted
> >
On Wed, Jun 29, 2022 at 02:56:41PM +0800, Xuan Zhuo wrote:
> This patch allows the new introduced
> __virtqueue_break()/__virtqueue_unbreak() to break/unbreak the
> virtqueue.
>
> Signed-off-by: Xuan Zhuo
I wonder how this interacts with the hardening patches.
Jason?
> ---
>
On Wed, Jun 29, 2022 at 02:56:18PM +0800, Xuan Zhuo wrote:
> reset can be divided into the following four steps (example):
> 1. transport: notify the device to reset the queue
> 2. vring: recycle the buffer submitted
> 3. vring: reset/resize the vring (may re-alloc)
> 4. transport:
On Fri, Jul 01, 2022 at 09:22:15AM +0800, Jason Wang wrote:
> On Fri, Jul 1, 2022 at 3:20 AM Michael S. Tsirkin wrote:
> >
> > On Thu, Jun 30, 2022 at 11:51:30AM -0600, Mathieu Poirier wrote:
> > > + virtualization@lists.linux-foundation.org
> > > + jasow...@redhat.com
> > > + m...@redhat.com
> >
On Fri, Jul 01, 2022 at 09:12:58AM +0800, Jason Wang wrote:
> On Thu, Jun 30, 2022 at 11:44 PM Michael S. Tsirkin wrote:
> >
> > On Thu, Jun 30, 2022 at 01:08:53PM +0300, Alexander Atanasov wrote:
> > > Hello,
> > >
> > > On 30/06/2022 12:46, Michael S. Tsirkin wrote:
> > > > On Thu, Jun 30, 2022
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