search for: umnap

On Wed, Feb 05, 2020 at 03:50:14PM +0800, Jason Wang wrote: > > Would it be better for the map/umnap logic to happen inside each device ? > > Devices that needs the IOMMU will call iommu APIs from inside the driver callback. > > Technically, this can work. But if it can be done by vhost-vpda it will make > the vDPA driver more compact and easier to be implemented. Generally speaki...

On Wed, Feb 05, 2020 at 03:50:14PM +0800, Jason Wang wrote: > > Would it be better for the map/umnap logic to happen inside each device ? > > Devices that needs the IOMMU will call iommu APIs from inside the driver callback. > > Technically, this can work. But if it can be done by vhost-vpda it will make > the vDPA driver more compact and easier to be implemented. Generally speaki...

...t; > > > For 1), I'm not sure parent is sufficient for to doing this or need to > > > > introduce new API like iommu_device in mdev. > > > Agree. We may also need to introduce something like the iommu_device. > > > > > Would it be better for the map/umnap logic to happen inside each device ? > > Devices that needs the IOMMU will call iommu APIs from inside the driver callback. > > > Technically, this can work. But if it can be done by vhost-vpda it will make > the vDPA driver more compact and easier to be implemented. > >...

...g in this method >>> >>> For 1), I'm not sure parent is sufficient for to doing this or need to >>> introduce new API like iommu_device in mdev. >> Agree. We may also need to introduce something like the iommu_device. >> > Would it be better for the map/umnap logic to happen inside each device ? > Devices that needs the IOMMU will call iommu APIs from inside the driver callback. Technically, this can work. But if it can be done by vhost-vpda it will make the vDPA driver more compact and easier to be implemented. > Devices that has other ways...

On Wed, Feb 05, 2020 at 08:56:48AM -0400, Jason Gunthorpe wrote: > On Wed, Feb 05, 2020 at 03:50:14PM +0800, Jason Wang wrote: > > > Would it be better for the map/umnap logic to happen inside each device ? > > > Devices that needs the IOMMU will call iommu APIs from inside the driver callback. > > > > Technically, this can work. But if it can be done by vhost-vpda it will make > > the vDPA driver more compact and easier to be implemente...

On 2020/1/31 ??11:36, Tiwei Bie wrote: > This patch introduces a vDPA based vhost backend. This > backend is built on top of the same interface defined > in virtio-vDPA and provides a generic vhost interface > for userspace to accelerate the virtio devices in guest. > > This backend is implemented as a vDPA device driver on > top of the same ops used in virtio-vDPA. It will

On 2020/1/31 ??11:36, Tiwei Bie wrote: > This patch introduces a vDPA based vhost backend. This > backend is built on top of the same interface defined > in virtio-vDPA and provides a generic vhost interface > for userspace to accelerate the virtio devices in guest. > > This backend is implemented as a vDPA device driver on > top of the same ops used in virtio-vDPA. It will

...t; For 1), I'm not sure parent is sufficient for to doing this or need > > >>> to introduce new API like iommu_device in mdev. > > >> Agree. We may also need to introduce something like the iommu_device. > > >> > > > Would it be better for the map/umnap logic to happen inside each device ? > > > Devices that needs the IOMMU will call iommu APIs from inside the driver > > callback. > > > > > > Technically, this can work. But if it can be done by vhost-vpda it will make the > > vDPA driver more compact and ea...

...t;>> For 1), I'm not sure parent is sufficient for to doing this or need >>>>> to introduce new API like iommu_device in mdev. >>>> Agree. We may also need to introduce something like the iommu_device. >>>> >>> Would it be better for the map/umnap logic to happen inside each device ? >>> Devices that needs the IOMMU will call iommu APIs from inside the driver >> callback. >> >> >> Technically, this can work. But if it can be done by vhost-vpda it will make the >> vDPA driver more compact and easier to b...