On Tue, Jun 23, 2015 at 12:39:09PM +0200, Richard Weinberger wrote:
> Not sure if I understand this correctly, is the plan to support pmem also on 
> UML?
> At least drivers/block/pmem.c cannot work on UML as it depends on io memory.
> 
> Only x86 seems to have ARCH_HAS_NOCACHE_UACCESS, if UML would offer these 
> methods
> what drivers need them? I'm still not sure where it would make sense on UML as
> uaccess on UML means ptrace() between host and guest process.

Ok, that makese snese.  Dan, how about just moving the new pmem helpers
from cacheflush.h to a new asm/pmem.h to avoid having them dragged into
the um build?
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