On 05/12/16 12:46 PM, Jason Gunthorpe wrote: > NVMe might have to deal with pci-e hot-unplug, which is a similar > problem-class to the GPU case..
Sure, but if the NVMe device gets hot-unplugged it means that all the CMB mappings are useless and need to be torn down. This probably means killing any process that has mappings open. > In any event the allocator still needs to track which regions are in > use and be able to hook 'free' from userspace. That does suggest it > should be integrated into the nvme driver and not a bolt on driver.. Yup, that's correct. And yes, I've never suggested this to be a bolt on driver -- I always expected for it to get integrated into the nvme driver. (iopmem was not meant for this.) Logan
