Sure, this is not the complete patch. As far as I know the problem
you're facing with arm is that virt_to_page() does not provide the
correct page descriptor so my suggestion will eliminate the need for
it.
On Mon, Apr 18, 2016 at 09:53:30AM -0400, Sinan Kaya wrote:
> On 4/18/2016 2:54 AM, Eli Cohen wrote:
> > Sinan,
> >
> > if we get rid of the part this code:
> >
> > if (BITS_PER_LONG == 64) {
> > struct page **pages;
> > pages = kmalloc(sizeof *pages * buf->nbufs, gfp);
> > if (!pages)
> > goto err_free;
> > ...
> > ...
> > if (!buf->direct.buf)
> > goto err_free;
> > }
> >
> > Does that solve the arm issue?
>
> I will test. As far as I know, there is one more place these DMA addresses
> are called with vmap. This is in mlx4_en_map_buffer.
>
> I was trying to rearrange the allocation so that vmap actually works.
>
> What do you think about mlx4_en_map_buffer?
>
>
> --
> Sinan Kaya
> Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc.
> Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux
> Foundation Collaborative Project
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