From: Jason Wang <jasowang@redhat.com>
To: Tiwei Bie <tiwei.bie@intel.com>
Cc: mst@redhat.com, linux-kernel@vger.kernel.org,
kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, shahafs@mellanox.com, jgg@mellanox.com,
rob.miller@broadcom.com, haotian.wang@sifive.com,
eperezma@redhat.com, lulu@redhat.com, parav@mellanox.com,
rdunlap@infradead.org, hch@infradead.org, jiri@mellanox.com,
hanand@xilinx.com, mhabets@solarflare.com,
maxime.coquelin@redhat.com, lingshan.zhu@intel.com,
dan.daly@intel.com, cunming.liang@intel.com,
zhihong.wang@intel.com
Subject: Re: [PATCH] vhost: introduce vDPA based backend
Date: Wed, 5 Feb 2020 11:11:08 +0800 [thread overview]
Message-ID: <ad1707a0-7884-1329-52c6-8139230a930c@redhat.com> (raw)
In-Reply-To: <20200205020247.GA368700@___>
On 2020/2/5 上午10:02, Tiwei Bie wrote:
>> Before trying to do this it looks to me we need the following during the
>> probe
>>
>> 1) if set_map() is not supported by the vDPA device probe the IOMMU that is
>> supported by the vDPA device
>> 2) allocate IOMMU domain
>>
>> And then:
>>
>> 3) pin pages through GUP and do proper accounting
>> 4) store GPA->HPA mapping in the umem
>> 5) generate diffs of memory table and using IOMMU API to setup the dma
>> mapping 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.
>
Right, this is what I plan to do in next version.
Thanks
next prev parent reply other threads:[~2020-02-05 3:11 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-31 3:36 [PATCH] vhost: introduce vDPA based backend Tiwei Bie
2020-01-31 3:56 ` Randy Dunlap
2020-01-31 5:12 ` Randy Dunlap
2020-01-31 5:54 ` Tiwei Bie
2020-01-31 5:52 ` Tiwei Bie
2020-02-04 3:30 ` Jason Wang
2020-02-04 6:01 ` Michael S. Tsirkin
2020-02-04 6:46 ` Jason Wang
2020-02-05 2:05 ` Tiwei Bie
2020-02-05 3:12 ` Jason Wang
2020-02-05 5:31 ` Michael S. Tsirkin
2020-02-05 5:50 ` Jason Wang
2020-02-05 6:30 ` Michael S. Tsirkin
2020-02-05 6:49 ` Jason Wang
2020-02-05 7:16 ` Michael S. Tsirkin
2020-02-05 7:42 ` Jason Wang
2020-02-05 9:22 ` Michael S. Tsirkin
2020-02-05 2:02 ` Tiwei Bie
2020-02-05 3:11 ` Jason Wang [this message]
2020-02-05 7:15 ` Shahaf Shuler
2020-02-05 7:50 ` Jason Wang
2020-02-05 9:23 ` Michael S. Tsirkin
2020-02-06 3:07 ` Jason Wang
2020-02-05 9:30 ` Shahaf Shuler
2020-02-05 10:33 ` Michael S. Tsirkin
2020-02-06 3:09 ` Jason Wang
2020-02-06 3:04 ` Jason Wang
2020-02-05 12:56 ` Jason Gunthorpe
2020-02-05 13:14 ` Michael S. Tsirkin
2020-02-06 3:11 ` Jason Wang
2020-02-06 3:21 ` Zhu Lingshan
2020-02-18 13:53 ` Jason Gunthorpe
2020-02-19 2:52 ` Tiwei Bie
2020-02-19 13:11 ` Jason Gunthorpe
2020-02-20 2:42 ` Tiwei Bie
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