add a not device managed memremap_pages v2
From: Christoph Hellwig
Date: Fri Aug 16 2019 - 02:54:53 EST
Hi Dan and Jason,
Bharata has been working on secure page management for kvmppc guests,
and one I thing I noticed is that he had to fake up a struct device
just so that it could be passed to the devm_memremap_pages
instrastructure for device private memory.
This series adds non-device managed versions of the
devm_request_free_mem_region and devm_memremap_pages functions for
his use case.
Changes since v1:
- don't overload devm_request_free_mem_region
- export the memremap_pages and munmap_pages as kvmppc can be a module