drm/xe/vf: Use only assigned GGTT region
Each VF is assigned a limited range of the GGTT address space. To ensure that the VF driver does not use GGTT allocations outside of the assigned region, explicitly reserve GGTT space below and above this region when initializing GGTT. Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Reviewed-by: Michał Winiarski <michal.winiarski@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240527112015.1020-1-michal.wajdeczko@intel.com
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