The PCI subsystem (also known as the PCI layer) in the kernel provides all the generic functions that are used in common by various PCI device drivers.
在内核中的PCI子系统，也就是众所周知的PCI层，提供了所有可以用于大多数PCI设备驱动的通用功能。
The PCI subsystem (also known as the PCI layer) in the kernel provides all the generic functions that are used in common by various PCI device drivers.
在内核中的PCI子系统，也就是众所周知的PCI层，提供了所有可以用于大多数PCI设备驱动的通用功能。
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