linux-kernel - Re: [PATCH v4 7/9] xen/gntdev: Add initial support for dma-buf UAPI

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Message-ID: <48b11773-8d69-9386-b60c-c34a6b2803af@oracle.com>
Date:   Fri, 15 Jun 2018 17:00:25 -0400
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Oleksandr Andrushchenko <andr2000@...il.com>,
        xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-media@...r.kernel.org,
        jgross@...e.com, konrad.wilk@...cle.com
Cc:     daniel.vetter@...el.com, dongwon.kim@...el.com,
        matthew.d.roper@...el.com,
        Oleksandr Andrushchenko <oleksandr_andrushchenko@...m.com>
Subject: Re: [PATCH v4 7/9] xen/gntdev: Add initial support for dma-buf UAPI

On 06/15/2018 02:27 AM, Oleksandr Andrushchenko wrote:
> From: Oleksandr Andrushchenko <oleksandr_andrushchenko@...m.com>
>
> Add UAPI and IOCTLs for dma-buf grant device driver extension:
> the extension allows userspace processes and kernel modules to
> use Xen backed dma-buf implementation. With this extension grant
> references to the pages of an imported dma-buf can be exported
> for other domain use and grant references coming from a foreign
> domain can be converted into a local dma-buf for local export.
> Implement basic initialization and stubs for Xen DMA buffers'
> support.
>
> Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@...m.com>

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>