Hi, Qemu has experimental support for GPU passthrough of Intels integrated graphic devices. Unfortunately, Intel has changed some bits for their gen 11 devices and later. To support these devices, we have to account for those changes. This patch series adds the missing bits on the Qemu side.
I've tested the patch series on an ElkhartLake and TigerLake device. On the guest side, I've tested an EFI environment (GOP driver), a Linux guest and a Windows VM. The driver of all guests are able to use the GPU and produce an output on the connected display. Corvin Köhne (7): vfio/igd: return an invalid generation for unknown devices vfio/igd: support legacy mode for all known generations vfio/igd: use new BDSM register location and size for gen 11 and later vfio/igd: add new bar0 quirk to emulate BDSM mirror vfio/igd: add ID's for ElkhartLake and TigerLake vfio/igd: don't set stolen memory size to zero vfio/igd: correctly calculate stolen memory size for gen 9 and later hw/vfio/igd.c | 185 +++++++++++++++++++++++++++++++++++++------ hw/vfio/pci-quirks.c | 1 + hw/vfio/pci.h | 1 + 3 files changed, 161 insertions(+), 26 deletions(-) -- 2.46.0
