On 6/21/05, Jon Smirl <[EMAIL PROTECTED]> wrote:
> Second choice would be to make a new map type, DRM_VSHM. The specific
> driver would initmap the needed space at load time. The code
> implementing it would be identical to DRM_SHM, you just need another
> map type defined so that you can tell them apart. This scheme does not
> require anyone to be root and does not have a kernel DOS hole.
So back to the original topic.
I'll add a new map type DRM_VSHM. When initializing, the chip specific
driver needs to do something like this:
if ((ret = drm_initmap(dev, 0, video_size, 0, _DRM_VSHM, 0)))
goto err_g1;
The map needs to be created in the driver. Opening it up to a normal
user is a DOS hole where the kernel can be run out of memory. Use
getmap to find the map from user space.
--
Jon Smirl
[EMAIL PROTECTED]
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