linux-kernel - Re: [PATCH v4 5/9] xen/gntdev: Allow mappings for DMA buffers

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Date:   Mon, 18 Jun 2018 09:17:08 +0300
From:   Oleksandr Andrushchenko <Oleksandr_Andrushchenko@...m.com>
To:     Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Juergen Gross <jgross@...e.com>,
        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,
        konrad.wilk@...cle.com, dongwon.kim@...el.com,
        matthew.d.roper@...el.com, Sumit Semwal <sumit.semwal@...aro.org>
Cc:     daniel.vetter@...el.com
Subject: Re: [PATCH v4 5/9] xen/gntdev: Allow mappings for DMA buffers

On 06/16/2018 12:07 AM, Boris Ostrovsky wrote:
> On 06/15/2018 02:50 AM, Oleksandr Andrushchenko wrote:
>> On 06/15/2018 09:46 AM, Juergen Gross wrote:
>>> On 15/06/18 08:32, Oleksandr Andrushchenko wrote:
>>>> Please note, that this will need a change (attached) while
>>>> applying to the mainline kernel because of API changes [1].
>>>>
>>>> Unfortunately, current Xen tip kernel tree is v4.17-rc5 based,
>>>> so I cannot make the change in this patch now.
>>> I don't see any chance this series could go into 4.18, as the merge
>>> window is just closing. So please post the patch based on current
>>> Linux master of torvalds/linux.git
>> Ok, I'll wait for any comments/r-b's and then rebase to
>> torvalds/linux.git and push v5?
> As I mentioned earlier, I would very much like at least a review of the
> new interfaces by someone more knowledgeable than me.
I am adding "DMA BUFFER SHARING FRAMEWORK" maintainer to the list.
Sumit, could please help reviewing this? The whole work here
is to add dma-buf to Xen's grant device driver.

Intel could probably also say couple of words as they also
might re-use this work.
>
>> BTW, is there any plan to rebase Xen tip kernel?
>
> It is typically rebased to rc5 or r6, at which point patches for the
> next merge window are applied.
>
> -borsi