Re: [PATCH v11 12/12] drivers/block/pmem: Map NVDIMM with ioremap_wt()

2015-05-29 Thread Dan Williams
On Fri, May 29, 2015 at 3:59 PM, Toshi Kani wrote: > From: Toshi Kani > > The pmem driver maps NVDIMM with ioremap_nocache() as we cannot > write back the contents of the CPU caches in case of a crash. > > This patch changes to use ioremap_wt(), which provides uncached > writes but cached reads,

Re: [PATCH v11 12/12] drivers/block/pmem: Map NVDIMM with ioremap_wt()

2015-05-29 Thread Dan Williams
On Fri, May 29, 2015 at 3:59 PM, Toshi Kani toshi.k...@hp.com wrote: From: Toshi Kani toshi.k...@hp.com The pmem driver maps NVDIMM with ioremap_nocache() as we cannot write back the contents of the CPU caches in case of a crash. This patch changes to use ioremap_wt(), which provides