Jonathan Cameron wrote: > On Thu, 23 Jun 2022 21:19:39 -0700 > Dan Williams <dan.j.williams@xxxxxxxxx> wrote: > > > From: Ben Widawsky <bwidawsk@xxxxxxxxxx> > > > > The process of provisioning a region involves triggering the creation of > > a new region object, pouring in the configuration, and then binding that > > configured object to the region driver to start is operation. For > > persistent memory regions the CXL specification mandates that it > > identified by a uuid. Add an ABI for userspace to specify a region's > > uuid. > > > > Signed-off-by: Ben Widawsky <bwidawsk@xxxxxxxxxx> > > [djbw: simplify locking] > > Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx> > > I think this needs to be a little less restrictive as it currently errors > out on trying to write the same UUID to the same region twice. > > Short cut that case and just return 0 if the UUID is same as already set. Sure, fixed that up locally.
