What:		/sys/module/kvm/pvm/mmus_per_vcpu
Date:		October 2026
Contact:	Kunkun Jiang <jiangkunkun@huawei.com>
Description:
		Read or set the default number of user translation contexts per
		vCPU in a PVM VM's user shadow context pool. The kernel side
		uses one pool shared by all vCPUs, sized for two contexts per
		vCPU, and is not affected by this value.
		The code default is 8. Accepted values are 2, 4, 8 and 16.
		Invalid writes return an error and leave the default unchanged.

		Each VM snapshots this default at creation and uses that value
		when growing its user pool. Writes affect only subsequently
		created VMs; existing VMs are not resized or reconfigured.

		The file is readable by everyone and writable by root. It is
		present when PVM is initialized and sysfs is enabled. There is
		no corresponding boot command-line or module parameter.
