This patch series are aim to refine the IGD stolen memory support in QEMU. Some features of Intel HW relies on the stolen memory to work, but some of registers used to indicate the base address of stolen memory can only be programmed once after system is powered-up. This will cause problems if the base of the stolen memory is changed during IGD passthrough.
The solution of this patch series is allocating a new VM dedicated memory as "guest stolen memory" in QEMU for isolation and let the "guest stolen memory" sits in the same PA as host. Also it introduces Intel platform definitions and clears some old funtions and definitions. Zhi Wang (6): vfio: Add Intel platform definitions vfio: Setup IGD quirks earlier vfio: Setup IGD stolen memory vfio: Refine GGTT clearing vfio: Remove extra quirks and old definitions vfio: Setup IGD stolen memory under secondary mode hw/vfio/Makefile.objs | 2 +- hw/vfio/intel-platform.c | 366 +++++++++++++++++++++++++++++++++++++++++++++++ hw/vfio/intel-platform.h | 38 +++++ hw/vfio/pci-quirks.c | 322 ++++++++--------------------------------- 4 files changed, 463 insertions(+), 265 deletions(-) create mode 100644 hw/vfio/intel-platform.c create mode 100644 hw/vfio/intel-platform.h -- 2.7.4
