Re: [Qemu-devel] [PATCH qemu RFC 7/7] spapr: Add NVLink2 pass through support

2018-11-18 Thread Alexey Kardashevskiy
On 19/11/2018 14:01, David Gibson wrote: > On Tue, Nov 13, 2018 at 07:31:04PM +1100, Alexey Kardashevskiy wrote: >> The NVIDIA V100 GPU comes with some on-board RAM which is mapped into >> the host memory space and accessible as normal RAM via NVLink bus. >> The VFIO-PCI driver implements

Re: [Qemu-devel] [PATCH qemu RFC 7/7] spapr: Add NVLink2 pass through support

2018-11-18 Thread David Gibson
On Tue, Nov 13, 2018 at 07:31:04PM +1100, Alexey Kardashevskiy wrote: > The NVIDIA V100 GPU comes with some on-board RAM which is mapped into > the host memory space and accessible as normal RAM via NVLink bus. > The VFIO-PCI driver implements special regions for such GPU and emulated > NVLink

[Qemu-devel] [PATCH qemu RFC 7/7] spapr: Add NVLink2 pass through support

2018-11-13 Thread Alexey Kardashevskiy
The NVIDIA V100 GPU comes with some on-board RAM which is mapped into the host memory space and accessible as normal RAM via NVLink bus. The VFIO-PCI driver implements special regions for such GPU and emulated NVLink bridge (below referred as NPU). The POWER9 CPU also provides address translation