linux-kernel - Re: [PATCH] vhost: introduce vDPA based backend

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Date:   Tue, 4 Feb 2020 01:01:48 -0500
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     Jason Wang <jasowang@...hat.com>
Cc:     Tiwei Bie <tiwei.bie@...el.com>, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        netdev@...r.kernel.org, shahafs@...lanox.com, jgg@...lanox.com,
        rob.miller@...adcom.com, haotian.wang@...ive.com,
        eperezma@...hat.com, lulu@...hat.com, parav@...lanox.com,
        rdunlap@...radead.org, hch@...radead.org, jiri@...lanox.com,
        hanand@...inx.com, mhabets@...arflare.com,
        maxime.coquelin@...hat.com, lingshan.zhu@...el.com,
        dan.daly@...el.com, cunming.liang@...el.com, zhihong.wang@...el.com
Subject: Re: [PATCH] vhost: introduce vDPA based backend

On Tue, Feb 04, 2020 at 11:30:11AM +0800, Jason Wang wrote:
> 5) generate diffs of memory table and using IOMMU API to setup the dma
> mapping in this method

Frankly I think that's a bunch of work. Why not a MAP/UNMAP interface?

-- 
MST