Limited access system of GPU (Graphics Processing Unit) register

Abstract

The invention relates to the technical field of chip architectures, in particular to a limited access system of a GPU (Graphics Processing Unit) register, which is characterized in that according to a user identifier in a second access request, a first security level corresponding to the user identifier, a second security level of a configuration register corresponding to an access address and a third security level of a sub-register block corresponding to the access address, the first security level and the second security level are accessed; the multi-stage judgment is performed on whether the second access request can access the sub-register group or not, so that the security of register access is improved, and the second access request can only access the sub-register group allowed to be shared by the user through the second security level and the third security level, so that the user experience is improved. And the flexibility of register access in a limited access scene is improved.

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