Re: [PATCH 5/8] powerpc: override dma_get_required_mask by platform hook and ops

2011-05-25 Thread Nishanth Aravamudan
Ben, On 19.05.2011 [10:46:25 -0700], Nishanth Aravamudan wrote: > On 19.05.2011 [17:43:56 +1000], Benjamin Herrenschmidt wrote: > > On Wed, 2011-05-11 at 15:25 -0700, Nishanth Aravamudan wrote: > > > From: Milton Miller > > > > > > The hook dma_get_required_mask is supposed to return the mask re

Re: [PATCH 5/8] powerpc: override dma_get_required_mask by platform hook and ops

2011-05-19 Thread Nishanth Aravamudan
On 19.05.2011 [17:43:56 +1000], Benjamin Herrenschmidt wrote: > On Wed, 2011-05-11 at 15:25 -0700, Nishanth Aravamudan wrote: > > From: Milton Miller > > > > The hook dma_get_required_mask is supposed to return the mask required > > by the platform to operate efficently. The generic version of >

Re: [PATCH 5/8] powerpc: override dma_get_required_mask by platform hook and ops

2011-05-19 Thread Benjamin Herrenschmidt
On Wed, 2011-05-11 at 15:25 -0700, Nishanth Aravamudan wrote: > From: Milton Miller > > The hook dma_get_required_mask is supposed to return the mask required > by the platform to operate efficently. The generic version of > dma_get_required_mask in driver/base/platform.c returns a mask based >

[PATCH 5/8] powerpc: override dma_get_required_mask by platform hook and ops

2011-05-11 Thread Nishanth Aravamudan
From: Milton Miller The hook dma_get_required_mask is supposed to return the mask required by the platform to operate efficently. The generic version of dma_get_required_mask in driver/base/platform.c returns a mask based only on max_pfn. However, this is likely too big for iommu systems and co