On Tue, Jun 21, 2016 at 10:13:45PM +0200, Arnd Bergmann wrote:
> On Tuesday, June 21, 2016 5:06:25 PM CEST Catalin Marinas wrote:
> > On Wed, Jun 08, 2016 at 05:49:59PM +0200, Arnd Bergmann wrote:
> > > On Wednesday, June 8, 2016 1:08:29 PM CEST Catalin Marinas wrote:
> > > > On Wed, Jun 08, 2016 a
On Tuesday, June 21, 2016 5:06:25 PM CEST Catalin Marinas wrote:
> On Wed, Jun 08, 2016 at 05:49:59PM +0200, Arnd Bergmann wrote:
> > On Wednesday, June 8, 2016 1:08:29 PM CEST Catalin Marinas wrote:
> > > On Wed, Jun 08, 2016 at 03:53:46PM +0800, Jisheng Zhang wrote:
> > > > static int __init arm
On Wed, Jun 08, 2016 at 05:49:59PM +0200, Arnd Bergmann wrote:
> On Wednesday, June 8, 2016 1:08:29 PM CEST Catalin Marinas wrote:
> > On Wed, Jun 08, 2016 at 03:53:46PM +0800, Jisheng Zhang wrote:
> > > static int __init arm64_dma_init(void)
> > > {
> > > + if (swiotlb_force || max_pfn > (ar
Dear Catalin,
On Wed, 8 Jun 2016 13:13:56 +0100 Catalin Marinas wrote:
> On Wed, Jun 08, 2016 at 03:53:46PM +0800, Jisheng Zhang wrote:
> > --- a/arch/arm64/mm/dma-mapping.c
> > +++ b/arch/arm64/mm/dma-mapping.c
> > @@ -19,6 +19,7 @@
> >
> > #include
> > #include
> > +#include
> > #includ
On Wednesday, June 8, 2016 1:08:29 PM CEST Catalin Marinas wrote:
> On Wed, Jun 08, 2016 at 03:53:46PM +0800, Jisheng Zhang wrote:
> > static int __init arm64_dma_init(void)
> > {
> > + if (swiotlb_force || max_pfn > (arm64_dma_phys_limit >> PAGE_SHIFT))
> > + swiotlb = 1;
> > +
>
On Wed, Jun 08, 2016 at 03:53:46PM +0800, Jisheng Zhang wrote:
> --- a/arch/arm64/mm/dma-mapping.c
> +++ b/arch/arm64/mm/dma-mapping.c
> @@ -19,6 +19,7 @@
>
> #include
> #include
> +#include
> #include
> #include
> #include
Why is this include needed?
--
Catalin
On Wed, Jun 08, 2016 at 03:53:46PM +0800, Jisheng Zhang wrote:
> static int __init arm64_dma_init(void)
> {
> + if (swiotlb_force || max_pfn > (arm64_dma_phys_limit >> PAGE_SHIFT))
> + swiotlb = 1;
> +
> return atomic_pool_init();
> }
So any platform with RAM larger than 4
Dear all,
On Wed, 8 Jun 2016 15:53:46 +0800 Jisheng Zhang wrote:
> we only initialize swiotlb when swiotlb_force is true or not all system
> memory is DMA-able, this trivial optimization saves us 64MB when
> swiotlb is not necessary.
another solution is to call swiotlb_free() as ppc does. Either
we only initialize swiotlb when swiotlb_force is true or not all system
memory is DMA-able, this trivial optimization saves us 64MB when
swiotlb is not necessary.
Signed-off-by: Jisheng Zhang
---
arch/arm64/mm/dma-mapping.c | 15 ++-
arch/arm64/mm/init.c| 3 ++-
2 files chan
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