[PATCH] nvme: prepare support for Apple NVMe controller

[Stephan Günther]

On 2015/November/03 05:02, Christoph Hellwig wrote:
> On Thu, Oct 29, 2015 at 09:10:56AM -0600, Jon Derrick wrote:
> > > +#define readq lo_hi_readq
> > > +#define writeq lo_hi_writeq
> > > +
> > 
> > Good job figuring that one out. But this should be a quirk:
> > a) It will sacrifice some io cycles on other devices
> > b) It may get lost at some point in the name of performance
> > 
> > Christoph recently added a quirks mechanism where I think it would fit
> 
> We never access 64 bit registers in the fast path.  I'd be fine to
> apply the patch from Stephan as-is as long as we document in detail why
> we are doing this.  Stephan, can you respin the patch with a comment
> and also with the PCI ID for the Apple controller added to the ID table?

We are testing the new version of the patch and will submit it
afterwards.