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If ctxsw timeout occurs for a channel with usermode submit enabled, do not attempt to read GP_GET from USERD, since it is not mapped in kernel memory. Instead, assume that there is no progress on PBDMA. Recovery will occur in case ctxsw_timeout_accumulated_ms reaches max. Bug 2674388 Change-Id: I8ccb73f5e51cab6ecdcabbb2359865197163d4aa Signed-off-by: Thomas Fleury <tfleury@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2176006 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com> Reviewed-by: Kajetan Dutka <kdutka@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>