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In raw addressing mode of CBC backing storage, comptaglines are not required to be allocated or need to programmed in the ptes. Introduce a flag to detect if the hardware supports raw mode and use that to skip all the comptagline allocations and respective page table programming. JIRA NVGPU-9717 Change-Id: I0a16881fc3e897c3c408b30d1835f30564649dad Signed-off-by: Prathap Kumar Valsan <prathapk@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2908278 Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>