Linux设备驱动程序，用途是虚拟一段内存空间为设备驱动程序空间，在此段空间实现读写设备驱动程序。-Linux device driver, uses a memory space for the virtual device driver space, space to achieve during this read-write device drivers.

Linux内存仿真虚拟硬盘的办法_tmpfs-Memory emulation virtual hard way _tmpfs

在linux系统下调整虚拟机的内存大小和vcpu绑定情况-manage the memory and vcpu of virtual machine in the linux