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Jan Beulich
2d7f191b39
Linux'es supposedly equivalent "intel_iommu=igfx_off" deals with any graphics devices (not just Intel ones) while at the same time limiting the effect to IOMMUs covering only graphics devices. Keying the decision to leave translation disabled for an IOMMU to merely a magic SBDF tuple was wrong in the first place - systems may very well have non-graphics devices at 0000:00:02.0 (ordinary root ports commonly live there, for example). Any use of igd_drhd_address (and hence is_igd_drhd()) needs further qualification. Introduce a new "graphics only" field in struct acpi_drhd_unit and set it according to device scope parsing outcome. Replace the bad use of is_igd_drhd() in iommu_enable_translation() by use of this new field. While adding the new field also convert the adjacent include_all one to "bool". Signed-off-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Release-Acked-by: Ian Jackson <iwj@xenproject.org>
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