Re: How to fake a dax device for debugging purposes?
On Mon, May 11, 2020 at 11:38:45AM -0700, Dan Williams wrote:
Might you have disabled CONFIG_ZONE_DEVICE? That allows the pmem
driver to map 'struct page' for pmem and is required for DAX.
Yep that's it! Apparently there have been changes so that the "make
olddefconfig" starting with [1] doesn't result in CONFIG_ZONE_DEVICE
being defined any more. I'll fix that...
[1] https://github.com/tytso/xfstests-bld/blob/master/kernel-configs/x86_64-c...