On Tue, Jul 05, 2022 at 10:51:02AM -0300, Jason Gunthorpe wrote: > > In fact I'm not even sure this should be a character device, it seems > > to fit it way better with the PCI sysfs hierchacy, just like how we > > map MMIO resources, which these are anyway. And once it is on sysfs > > we do have a uniqueue inode and need none of the pseudofs stuff, and > > don't need all the glue code in nvme either. > > Shouldn't there be an allocator here? It feels a bit weird that the > entire CMB is given to a single process, it is a sharable resource, > isn't it? Making the entire area given by the device to the p2p allocator available to user space seems sensible to me. That is what the current series does, and what a sysfs interface would do as well.
