Re: fully convert arm to use dma-direct

From: Marc Zyngier
Date: Fri May 06 2022 - 08:06:30 EST


On Fri, 22 Apr 2022 22:17:20 +0100,
Linus Walleij <linus.walleij@xxxxxxxxxx> wrote:
>
> On Thu, Apr 21, 2022 at 9:42 AM Christoph Hellwig <hch@xxxxxx> wrote:
>
> > arm is the last platform not using the dma-direct code for directly
> > mapped DMA. With the dmaboune removal from Arnd we can easily switch
> > arm to always use dma-direct now (it already does for LPAE configs
> > and nommu). I'd love to merge this series through the dma-mapping tree
> > as it gives us the opportunity for additional core dma-mapping
> > improvements.
> (...)
>
> > b/arch/arm/mach-footbridge/Kconfig | 1
> > b/arch/arm/mach-footbridge/common.c | 19
> > b/arch/arm/mach-footbridge/include/mach/dma-direct.h | 8
> > b/arch/arm/mach-footbridge/include/mach/memory.h | 4
>
> I think Marc Z has a Netwinder that he can test this on. Marc?
> I have one too, just not much in my office because of parental leave.

Finally found some time to hook the machine up and throw a new kernel
at it. Booted at its usual glacial speed, so FWIW:

Tested-by: Marc Zyngier <maz@xxxxxxxxxx>

Thanks,

M.

--
Without deviation from the norm, progress is not possible.