On Mon, Mar 30, 2020 at 09:46:56AM -0700, Andrzej Jakowski wrote: > This patch introduces support for PMR that has been defined as part of NVMe > 1.4 > spec. User can now specify a pmrdev option that should point to > HostMemoryBackend. > pmrdev memory region will subsequently be exposed as PCI BAR 2 in emulated > NVMe > device. Guest OS can perform mmio read and writes to the PMR region that will > stay > persistent across system reboot.
Looks pretty good to me. Reviewed-by: Keith Busch <kbu...@kernel.org> For a possible future extention, it could be interesting to select the BAR for PMR dynamically, so that you could have CMB and PMR enabled on the same device.
