Within a driver, the mmap function is implemented through the remap_pfn_range kernel function, which provides a linear mapping of device memory into a user's address space.
在一个驱动程序中，mmap函数通过remap _ pfn_range内核函数实现，它提供设备内存到用户地址空间的线性映射。
Within a driver, the mmap function is implemented through the remap_pfn_range kernel function, which provides a linear mapping of device memory into a user's address space.
在一个驱动程序中，mmap函数通过remap _ pfn_range内核函数实现，它提供设备内存到用户地址空间的线性映射。
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