Hi Eric,

>-----Original Message-----
>From: Eric Auger <eric.auger@redhat.com>
>Sent: Thursday, September 14, 2023 5:04 PM
>To: Duan, Zhenzhong <zhenzhong.duan@intel.com>; qemu-devel@nongnu.org
>Cc: alex.williamson@redhat.com; clg@redhat.com; jgg@nvidia.com;
>nicolinc@nvidia.com; Martins, Joao <joao.m.martins@oracle.com>;
>peterx@redhat.com; jasowang@redhat.com; Tian, Kevin <kevin.tian@intel.com>;
>Liu, Yi L <yi.l.liu@intel.com>; Sun, Yi Y <yi.y.sun@intel.com>; Peng, Chao P
><chao.p.peng@intel.com>
>Subject: Re: [PATCH v1 00/22] vfio: Adopt iommufd
>
>Hi Zhenzhong
>
>On 8/30/23 12:37, Zhenzhong Duan wrote:
>> Hi All,
>>
>> As the kernel side iommufd cdev and hot reset feature have been queued,
>> also hwpt alloc has been added in Jason's for_next branch [1], I'd like
>> to update a new version matching kernel side update and with rfc flag
>> removed. Qemu code can be found at [2], look forward more comments!
>>
>>
>> We have done wide test with different combinations, e.g:
>>
>> - PCI device were tested
>> - FD passing and hot reset with some trick.
>> - device hotplug test with legacy and iommufd backends
>> - with or without vIOMMU for legacy and iommufd backends
>> - divices linked to different iommufds
>> - VFIO migration with a E800 net card(no dirty sync support) passthrough
>> - platform, ccw and ap were only compile-tested due to environment limit
>>
>>
>> Given some iommufd kernel limitations, the iommufd backend is
>> not yet fully on par with the legacy backend w.r.t. features like:
>> - p2p mappings (you will see related error traces)
>> - dirty page sync
>> - and etc.
>>
>>
>> Changelog:
>> v1:
>> - Alloc hwpt instead of using auto hwpt
>> - elaborate iommufd code per Nicolin
>> - consolidate two patches and drop as.c
>> - typo error fix and function rename
>>
>> I didn't list change log of rfc stage, see [3] if anyone is interested.
>>
>>
>> [1] https://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd.git
>> [2] https://github.com/yiliu1765/qemu/commits/zhenzhong/iommufd_cdev_v1
>> [3] https://lists.nongnu.org/archive/html/qemu-devel/2023-07/msg02529.html
>
>Do you have a branch to share?
>
>It does not apply to upstream

Sure, https://github.com/yiliu1765/qemu/tree/zhenzhong/iommufd_cdev_v1_rebased
I think this one is already based on today's upstream.

Thanks
Zhenzhong