Messages in this thread | | | Date | Tue, 6 Dec 2016 09:38:50 -0700 | From | Jason Gunthorpe <> | Subject | Re: Enabling peer to peer device transactions for PCIe devices |
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> > I'm not opposed to mapping /dev/nvmeX. However, the lookup is trivial > > to accomplish in sysfs through /sys/dev/char to find the sysfs path of the > > device-dax instance under the nvme device, or if you already have the nvme > > sysfs path the dax instance(s) will appear under the "dax" sub-directory. > > Personally I think mapping the dax resource in the sysfs tree is a nice > way to do this and a bit more intuitive than mapping a /dev/nvmeX.
It is still not at all clear to me what userpsace is supposed to do with this on nvme.. How is the CMB usable from userspace?
Jason
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