Re: UIO and memory from dma_alloc_coherent - UIO_MEM_PHYS?

From: Greg KH
Date: Mon Feb 17 2014 - 14:16:18 EST


On Mon, Feb 17, 2014 at 07:32:10PM +0100, Stanislav Meduna wrote:
> On 17.02.2014 19:18, Greg KH wrote:
>
> > The uio_dmem_genirq.c driver showed up in 3.8, so it might be good for
> > you to update your kernel if you want to do DMA memory with a UIO
> > driver, as lots of other things in this area was fixed to accomplish
> > this.
>
> Ah, OK, I will look into this.
>
> I am stuck with 3.4 at the moment because of the real-time patches
> and some semantic changes there in the newer kernels necessitating
> much more tweak-and-test time than I currently have...

The real-time patches are available for 3.10, so that shouldn't be an
excuse anymore :)
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