On Wed, Jan 16, 2019 at 3:40 PM Dave Hansen <dave.hansen@xxxxxxxxx> wrote: > On 1/16/19 1:16 PM, Bjorn Helgaas wrote: > > On Wed, Jan 16, 2019 at 12:25 PM Dave Hansen > > <dave.hansen@xxxxxxxxxxxxxxx> wrote: > >> From: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> > >> Currently, a persistent memory region is "owned" by a device driver, > >> either the "Direct DAX" or "Filesystem DAX" drivers. These drivers > >> allow applications to explicitly use persistent memory, generally > >> by being modified to use special, new libraries. > > > > Is there any documentation about exactly what persistent memory is? > > In Documentation/, I see references to pstore and pmem, which sound > > sort of similar, but maybe not quite the same? > > One instance of persistent memory is nonvolatile DIMMS. They're > described in great detail here: Documentation/nvdimm/nvdimm.txt Thanks! Some bread crumbs in the changelog to lead there would be great. Bjorn
