DDI extension support#285
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- Support in the L0 Loader for https://oneapi-src.github.io/level-zero-spec/level-zero/latest/core/EXT_Driver_DDIHandles.html#ze-extension-driver-ddi-handles - To improve the speed for each call of L0 apis into the correct driver, the new support enables for the driver to allocate a header that stores that driver's ddi tables such that the Loader does not need to perform translation of handles to/from ze_object_t. - Given a driver supports the new extension, the loader will no longer create the ze_object_t and instead use the packed ddi tables in each handle_t. - The code has been refactored such that the legacy path will continue to work for the driver that has not converted over without interfering with a driver which now uses the "fast" path. - This new code path also removes the need for handle translation by the user if the drivers all support the new extension. - This new path is enabled with ZE_ENABLE_LOADER_DRIVER_DDI_PATH=1, by default this new path is disabled. - Updated get_version helper function to expand dynamically Signed-off-by: Neil R. Spruit <neil.r.spruit@intel.com>
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default this new path is disabled.