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The guc_mmio_reg interface supports steering, but it is currently not implemented. This will allow the GuC to control steering of MMIO registers after save-restore and avoid reading from fused off MCR register instances. Fixes:9c57bc0865("drm/xe/lnl: Drop force_probe requirement") Signed-off-by: Jesus Narvaez <jesus.narvaez@intel.com> Cc: Matt Roper <matthew.d.roper@intel.com> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241212190100.3768068-1-jesus.narvaez@intel.com (cherry picked from commitee5a1321df) Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>