Messages in this thread | | | From | Bjorn Helgaas <> | Date | Wed, 16 Jan 2019 15:44:24 -0600 | Subject | Re: [PATCH 4/4] dax: "Hotplug" persistent memory for use like normal RAM |
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On Wed, Jan 16, 2019 at 3:40 PM Dave Hansen <dave.hansen@intel.com> wrote: > On 1/16/19 1:16 PM, Bjorn Helgaas wrote: > > On Wed, Jan 16, 2019 at 12:25 PM Dave Hansen > > <dave.hansen@linux.intel.com> wrote: > >> From: Dave Hansen <dave.hansen@linux.intel.com> > >> 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
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