Messages in this thread | | | Date | Mon, 18 Apr 2016 09:06:18 -0400 | From | okaya@codeauro ... | Subject | Re: [PATCH V2] net: ethernet: mellanox: correct page conversion |
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On 2016-04-18 08:12, Christoph Hellwig wrote: > On Sat, Apr 16, 2016 at 06:23:32PM -0400, Sinan Kaya wrote: >> Current code is assuming that the address returned by >> dma_alloc_coherent >> is a logical address. This is not true on ARM/ARM64 systems. > > Can you explain what you mean with a 'logical address' and what actual > issue you're trying to solve?
Vmap call is failing on arm64 systems because dma alloc api already returns an address mapped with vmap.
Please see arch/arm64/mm directory.
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