To implement dGPU prime feature, virtgpu needs to import/export buffer between virtio iGPU and passthrough dGPU. Before that, virtgpu has to checkout p2pdma_distance. But calling function pci_p2pdma_distance in guest VM will only get virtual p2pdma_distance instead of real physical p2pdma_distance.
This series is to support handling the new virtgpu command from the guest VM to get the physical p2pdma_distance of two PCI devices of guest VM. Julia Zhang (3): virtio-gpu: set hostaddr for virtio iGPU pci: introduce a function to get PCIDevice virtio-gpu: add a new command to calculate p2pdma_distance hw/display/virtio-gpu-virgl.c | 47 +++++++++++++++++++++ hw/display/virtio-gpu.c | 6 +++ hw/i386/xen/xen-hvm.c | 6 +++ hw/pci/pci.c | 22 ++++++++++ hw/xen/xen_pt.c | 10 ++--- hw/xen/xen_pt.h | 1 - include/hw/pci/pci.h | 2 + include/hw/pci/pci_device.h | 1 + include/hw/virtio/virtio-gpu-bswap.h | 12 ++++++ include/hw/virtio/virtio-gpu.h | 2 + include/hw/xen/xen.h | 3 ++ include/standard-headers/linux/virtio_gpu.h | 19 +++++++++ 12 files changed, 125 insertions(+), 6 deletions(-) -- 2.34.1
