On Thu, Oct 26, 2023 at 2:42 PM Michael S. Tsirkin [off-list ref] wrote:

On Sun, Sep 24, 2023 at 01:05:33AM +0800, Cindy Lu wrote:

quoted

Hi All
Really apologize for the delay, this is the draft RFC for
iommufd support for vdpa, This code provides the basic function
for iommufd support

The code was tested and passed in device vdpa_sim_net
The qemu code is
https://gitlab.com/lulu6/gitlabqemutmp/-/tree/iommufdRFC
The kernel code is
https://gitlab.com/lulu6/vhost/-/tree/iommufdRFC

ToDo
1. this code is out of date and needs to clean and rebase on the latest code
2. this code has some workaround, I Skip the check for
iommu_group and CACHE_COHERENCY, also some misc issues like need to add
mutex for iommfd operations
3. only test in emulated device, other modes not tested yet

After addressed these problems I will send out a new version for RFC. I will
provide the code in 3 weeks

What's the status here?

Hi Michael
The code is finished, but I found some bug after adding the support for ASID,
will post the new version after this bug is fixed, should be next week
Thanks
Cindy

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MST