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This initial GuC Relay ABI specification includes messages for ABI version negotiation and to query values of runtime/fuse registers. We will start handling those messages on the PF driver soon. Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com> Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240423180436.2089-2-michal.wajdeczko@intel.com