linux-kernel - Re: [RFC PATCH 6/6] drm/i915/gvt: support QEMU getting the dmabuf

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Message-ID: <1495191087.627.59.camel@redhat.com>
Date:   Fri, 19 May 2017 12:51:27 +0200
From:   Gerd Hoffmann <kraxel@...hat.com>
To:     "Chen, Xiaoguang" <xiaoguang.chen@...el.com>
Cc:     "Tian, Kevin" <kevin.tian@...el.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "zhenyuw@...ux.intel.com" <zhenyuw@...ux.intel.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        "Lv, Zhiyuan" <zhiyuan.lv@...el.com>,
        "intel-gvt-dev@...ts.freedesktop.org" 
        <intel-gvt-dev@...ts.freedesktop.org>,
        "Wang, Zhi A" <zhi.a.wang@...el.com>
Subject: Re: [RFC PATCH 6/6] drm/i915/gvt: support QEMU getting the dmabuf

  Hi,

> Or more simply just pass the plane id, because even the plane description did not match the current one we will eventually create a dmabuf based on current plane.

That is the current behavior.

Works as long as we return the plane description too, so userspace knows
what it actually got.

cheers,
  Gerd