Re: [PATCH v8 09/13] nvme-pci: Use PCI p2pmem subsystem to manage the CMB

2018-09-27 Thread Keith Busch
On Thu, Sep 27, 2018 at 10:54:16AM -0600, Logan Gunthorpe wrote: > Register the CMB buffer as p2pmem and use the appropriate allocation > functions to create and destroy the IO submission queues. > > If the CMB supports WDS and RDS, publish it for use as P2P memory > by other devices. > > Kernels

[PATCH v8 09/13] nvme-pci: Use PCI p2pmem subsystem to manage the CMB

2018-09-27 Thread Logan Gunthorpe
Register the CMB buffer as p2pmem and use the appropriate allocation functions to create and destroy the IO submission queues. If the CMB supports WDS and RDS, publish it for use as P2P memory by other devices. Kernels without CONFIG_PCI_P2PDMA will also no longer support NVMe CMB. However, seein