On Mon, Oct 21, 2013 at 8:34 AM, Vikas Patil <vikasmpatil at gmail.com> wrote:
> Hi All,
>
> I am running the webkit on custom linux based on 3.4.25 kernel on omap5.
> However it is failing to map some memory using drm_gem_mmap() at following
> code.
>
> if (map->size < vma->vm_end - vma->vm_start) {
> ret = -EINVAL;
> goto out_unlock;
> }
>
> Here is one of the failing params
> vma->vm_pgoff = 170254
> map->size:73728
> vma->vm_end = 1776594944
> vma->vm_start:1776463872
> (vm_end - vm_start):131072
>
> Could anyone please suggest how to debug this or Is this a known bug?
Hi Vikas,
It is not really a bug.. or rather it is somehow a userspace bug. GEM
only wants you to mmap an entire buffer, and not a partial buffer. So
somehow userspace is asking to only mmap part of the buffer (73728 vs
131072)
BR,
-R
> Regards,
> Vikas
>
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