Re: [Qemu-devel] [PATCH qemu v5] spapr: Support NVIDIA V100 GPU with NVLink2

2019-03-11 Thread Alex Williamson
On Fri, 8 Mar 2019 12:44:20 +1100 Alexey Kardashevskiy wrote: > NVIDIA V100 GPUs have on-board RAM which is mapped into the host memory > space and accessible as normal RAM via an NVLink bus. The VFIO-PCI driver > implements special regions for such GPUs and emulates an NVLink bridge. > NVLink2-

Re: [Qemu-devel] [PATCH qemu v5] spapr: Support NVIDIA V100 GPU with NVLink2

2019-03-07 Thread Alexey Kardashevskiy
On 08/03/2019 15:30, David Gibson wrote: > On Fri, Mar 08, 2019 at 12:44:20PM +1100, Alexey Kardashevskiy wrote: >> NVIDIA V100 GPUs have on-board RAM which is mapped into the host memory >> space and accessible as normal RAM via an NVLink bus. The VFIO-PCI driver >> implements special regions f

Re: [Qemu-devel] [PATCH qemu v5] spapr: Support NVIDIA V100 GPU with NVLink2

2019-03-07 Thread David Gibson
On Fri, Mar 08, 2019 at 12:44:20PM +1100, Alexey Kardashevskiy wrote: > NVIDIA V100 GPUs have on-board RAM which is mapped into the host memory > space and accessible as normal RAM via an NVLink bus. The VFIO-PCI driver > implements special regions for such GPUs and emulates an NVLink bridge. > NVL

[Qemu-devel] [PATCH qemu v5] spapr: Support NVIDIA V100 GPU with NVLink2

2019-03-07 Thread Alexey Kardashevskiy
NVIDIA V100 GPUs have on-board RAM which is mapped into the host memory space and accessible as normal RAM via an NVLink bus. The VFIO-PCI driver implements special regions for such GPUs and emulates an NVLink bridge. NVLink2-enabled POWER9 CPUs also provide address translation services which inclu