linux-kernel - Re: [PATCH 5/8] xen/gntdev: Add initial support for dma-buf UAPI

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 29 May 2018 18:34:14 -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 5/8] xen/gntdev: Add initial support for dma-buf UAPI

On 05/25/2018 11:33 AM, Oleksandr Andrushchenko wrote:

>  
> +/*
> + * Create a dma-buf [1] from grant references @refs of count @count provided
> + * by the foreign domain @domid with flags @flags.
> + *
> + * By default dma-buf is backed by system memory pages, but by providing
> + * one of the GNTDEV_DMA_FLAG_XXX flags it can also be created as
> + * a DMA write-combine or coherent buffer, e.g. allocated with dma_alloc_wc/
> + * dma_alloc_coherent.
> + *
> + * Returns 0 if dma-buf was successfully created and the corresponding
> + * dma-buf's file descriptor is returned in @fd.
> + *
> + * [1] https://elixir.bootlin.com/linux/latest/source/Documentation/driver-api/dma-buf.rst


Documentation/driver-api/dma-buf.rst.


-boris