[dm-devel] [PATCH] vmalloc: introduce vmap_pfn for persistent memory

[Christoph Hellwig]

On Wed, Nov 08, 2017 at 10:21:38AM -0500, Mikulas Patocka wrote:
> > And what do you do for an architecture with virtuall indexed caches?
> 
> Persistent memory is not supported on such architectures - it is only 
> supported on x86-64 and arm64.

For now.  But once support is added your driver will just corrupt data
unless you have the right API in place.