Re: [RFC] avoid indirect calls for DMA direct mappings v2

["Luck, Tony" <tony.luck@xxxxxxxxx>]

On Fri, Dec 07, 2018 at 11:07:05AM -0800, Christoph Hellwig wrote:
> This works is based on the dma-mapping tree, so you probably want to
> want this git tree for testing:
> 
>     git://git.infradead.org/users/hch/misc.git dma-direct-calls.2

Pulled this tree. Got HEAD

	33b9fc015171 ("dma-mapping: bypass indirect calls for dma-direct")

But the ia64 build fails with:

arch/ia64/mm/init.c:75:21: warning: 'enum dma_data_direction' declared inside parameter list [enabled by default]
arch/ia64/mm/init.c:75:21: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default]
arch/ia64/mm/init.c:75:40: error: parameter 4 ('dir') has incomplete type
arch/ia64/mm/init.c:74:6: error: function declaration isn't a prototype [-Werror=strict-prototypes]
arch/ia64/mm/init.c: In function 'arch_sync_dma_for_cpu':
arch/ia64/mm/init.c:77:2: error: implicit declaration of function '__phys_to_pfn' [-Werror=implicit-function-declaration]

-Tony