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Subject: Re: [PATCH 0/4] vDPA: API for reporting IOVA range
To:     "Michael S. Tsirkin" <mst@redhat.com>
Cc:     virtualization@lists.linux-foundation.org,
        linux-kernel@vger.kernel.org, rob.miller@broadcom.com,
        lingshan.zhu@intel.com, eperezma@redhat.com, lulu@redhat.com,
        shahafs@mellanox.com, hanand@xilinx.com, mhabets@solarflare.com,
        gdawar@xilinx.com, saugatm@xilinx.com, vmireyno@marvell.com,
        zhangweining@ruijie.com.cn, eli@mellanox.com
References: <20200617032947.6371-1-jasowang@redhat.com>
 <20201021104508-mutt-send-email-mst@kernel.org>
From:   Jason Wang <jasowang@redhat.com>
Message-ID: <09525e8b-2c7a-de5d-128a-79b5b0725224@redhat.com>
Date:   Thu, 22 Oct 2020 13:47:19 +0800
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On 2020/10/21 下午10:45, Michael S. Tsirkin wrote:
> On Wed, Jun 17, 2020 at 11:29:43AM +0800, Jason Wang wrote:
>> Hi All:
>>
>> This series introduces API for reporing IOVA range. This is a must for
>> userspace to work correclty:
>>
>> - for the process that uses vhost-vDPA directly to properly allocate
>>    IOVA
>> - for VM(qemu), when vIOMMU is not enabled, fail early if GPA is out
>>    of range
>> - for VM(qemu), when vIOMMU is enabled, determine a valid guest
>>    address width
>>
>> Please review.
>>
>> Thanks
> OK so what is the plan here? Change begin-end->first-last and repost?


I've posted V2 with this change, but it get some warning for buildbot.

Will post a V3.

Thanks


>
>> Jason Wang (4):
>>    vdpa: introduce config op to get valid iova range
>>    vdpa_sim: implement get_iova_range bus operation
>>    vdpa: get_iova_range() is mandatory for device specific DMA
>>      translation
>>    vhost: vdpa: report iova range
>>
>>   drivers/vdpa/vdpa.c              |  4 ++++
>>   drivers/vdpa/vdpa_sim/vdpa_sim.c | 11 +++++++++++
>>   drivers/vhost/vdpa.c             | 27 +++++++++++++++++++++++++++
>>   include/linux/vdpa.h             | 14 ++++++++++++++
>>   include/uapi/linux/vhost.h       |  4 ++++
>>   include/uapi/linux/vhost_types.h |  5 +++++
>>   6 files changed, 65 insertions(+)
>>
>> -- 
>> 2.20.1