On Fri, Jun 17, 2022 at 03:13:33PM -0400, Chuck Zmudzinski wrote: > Currently we are creating a register group for the Intel IGD OpRegion > for every device we pass through, but the XEN_PCI_INTEL_OPREGION > register group is only valid for an Intel IGD. Add a check to make > sure the device is an Intel IGD and a check that the administrator has > enabled gfx_passthru in the xl domain configuration. Require both checks > to be true before creating the register group. Use the existing > is_igd_vga_passthrough() function to check for a graphics device from > any vendor and that the administrator enabled gfx_passthru in the xl > domain configuration, but further require that the vendor be Intel, > because only Intel IGD devices have an Intel OpRegion. These are the > same checks hvmloader and libxl do to determine if the Intel OpRegion > needs to be mapped into the guest's memory. Also, move the comment > about trapping 0xfc for the Intel OpRegion where it belongs after > applying this patch. > > Signed-off-by: Chuck Zmudzinski <brchu...@aol.com>
Reviewed-by: Anthony PERARD <anthony.per...@citrix.com> Thanks, -- Anthony PERARD
