On 03/19/2012 09:25 PM, Dave Airlie wrote:
On Fri, Mar 16, 2012 at 9:47 AM, Inki Dae<inki.dae@xxxxxxxxxxx> wrote:
From: Joonyoung Shim<jy0922.shim@xxxxxxxxxxx>
The G2D is a 2D graphic accelerator that supports Bit Block Transfer.
This G2D driver is exynos drm specific and supports only G2D(version
4.1) of later Exynos series from Exynos4X12 because supporting DMA.
So just to make sure I understand, userspace generates two command
streams, one containing registers that don't need base addresses
and one containing registers that do contain it.
Now tell me how this address security wise, since non-root users have
the ability to use this interface.
can userspace put registers that require a base address into the first
command stream and specify any phy addr in the system?
Right, it's possible scenario. I will add codes to check it.
If not, please
explain in comments where this is blocked. Where is the list of
registers the first command stream and second command stream can
access specified?
I'm not really happy about this appearing so late on the radar for
3.4, you really want new major userspace security features to turn up
a lot earlier for review.
I post the patch to get the review like this and i think time posting
patch can be open always. If the patch has serious problem, certainly
don't apply it. I don't want it too, but i will try to solve it and
resend updated patch.
Thanks.
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
http://lists.freedesktop.org/mailman/listinfo/dri-devel
