The nature of a virtio-mmio node is discovered by the virtio driver at
probe time. However the DMA relation between devices must be described
statically. When a virtio-mmio node is a virtio-iommu device, it needs an
"#iommu-cells" property as specified by bindings/iommu/iommu.txt.
Otherwise, the
Implement the virtio-iommu driver, following specification v0.9 [1].
Only minor changes since v5 [2]. I fixed issues reported by Michael and
added tags from Eric and Bharat. Thanks!
You can find Linux driver and kvmtool device on v0.9 branches [3],
module and x86 support on virtio-iommu/devel.
On 10/12/2018 22:53, Michael S. Tsirkin wrote:
> On Mon, Dec 10, 2018 at 03:06:47PM +, Jean-Philippe Brucker wrote:
>> On 27/11/2018 18:53, Michael S. Tsirkin wrote:
>>> On Tue, Nov 27, 2018 at 06:10:46PM +, Jean-Philippe Brucker wrote:
On 27/11/2018 18:04, Michael S. Tsirkin wrote:
On Tue, Dec 11, 2018 at 11:06:43AM +0800, Jason Wang wrote:
>
> On 2018/12/11 上午9:34, Michael S. Tsirkin wrote:
> > On Mon, Dec 10, 2018 at 05:44:52PM +0800, Jason Wang wrote:
> > > When we try to do rx busy polling in tx path in commit 441abde4cd84
> > > ("net: vhost: add rx busy polling in tx
On 2018/12/11 上午9:34, Michael S. Tsirkin wrote:
On Mon, Dec 10, 2018 at 05:44:52PM +0800, Jason Wang wrote:
When we try to do rx busy polling in tx path in commit 441abde4cd84
("net: vhost: add rx busy polling in tx path"), we lock rx vq mutex
after tx vq mutex is held. This may lead deadlock
On Mon, Dec 10, 2018 at 05:44:52PM +0800, Jason Wang wrote:
> When we try to do rx busy polling in tx path in commit 441abde4cd84
> ("net: vhost: add rx busy polling in tx path"), we lock rx vq mutex
> after tx vq mutex is held. This may lead deadlock so we try to lock vq
> one by one in commit
On Mon, Dec 10, 2018 at 11:14:41PM +0800, kbuild test robot wrote:
> Hi Jason,
>
> I love your patch! Perhaps something to improve:
>
> [auto build test WARNING on net/master]
>
> url:
> https://github.com/0day-ci/linux/commits/Jason-Wang/Fix-various-issue-of-vhost/20181210-223236
> config:
From: Jason Wang
Date: Mon, 10 Dec 2018 17:44:50 +0800
> This series tries to fix various issues of vhost:
>
> - Patch 1 adds a missing write barrier between used idx updating and
> logging.
> - Patch 2-3 brings back the protection of device IOTLB through vq
> mutex, this fixes possible use
