1. A data access processing method, comprising: copying a kernel code and a global descriptor table on a memory of each node of a plurality of nodes in Non Uniform Memory Access Architecture respectively; making base addresses of segments of the kernel code on the respective nodes in the global descriptor table respectively point to linear addresses of the kernel code corresponding to the respective nodes based on a virtual address of the kernel code, wherein the base addresses represent relative offsets of the locations in the global descriptor table of the kernel codes on the respective nodes; and recording a mapping relation between the linear addresses of the kernel code corresponding to the respective nodes and physical addresses of the respective nodes in a kernel page table respectively, to enable a process to access the kernel code locally in the respective nodes.