1# SPDX-License-Identifier: GPL-2.0-only 2# 3# Virtualization support drivers 4# 5 6menuconfig VIRT_DRIVERS 7 bool "Virtualization drivers" 8 help 9 Say Y here to get to see options for device drivers that support 10 virtualization environments. 11 12 If you say N, all options in this submenu will be skipped and disabled. 13 14if VIRT_DRIVERS 15 16config VMGENID 17 tristate "Virtual Machine Generation ID driver" 18 default y 19 help 20 Say Y here to use the hypervisor-provided Virtual Machine Generation ID 21 to reseed the RNG when the VM is cloned. This is highly recommended if 22 you intend to do any rollback / cloning / snapshotting of VMs. 23 24 Prefer Y to M so that this protection is activated very early. 25 26config FSL_HV_MANAGER 27 tristate "Freescale hypervisor management driver" 28 depends on FSL_SOC 29 select EPAPR_PARAVIRT 30 help 31 The Freescale hypervisor management driver provides several services 32 to drivers and applications related to the Freescale hypervisor: 33 34 1) An ioctl interface for querying and managing partitions. 35 36 2) A file interface to reading incoming doorbells. 37 38 3) An interrupt handler for shutting down the partition upon 39 receiving the shutdown doorbell from a manager partition. 40 41 4) A kernel interface for receiving callbacks when a managed 42 partition shuts down. 43 44config STEAL_GOVERNOR 45 tristate "Dynamic vCPU management based on steal time" 46 depends on PARAVIRT && SMP 47 select PREFERRED_CPU 48 default m 49 help 50 This driver helps to reduce the steal time in paravirtualized 51 environments, thereby reducing vCPU preemption costs. 52 53 By default preferred CPUs will be same as active CPUs. Depending 54 on the steal time when steal_governor driver is enabled, 55 preferred CPUs could become subset of active CPUs. 56 More details are at: Documentation/driver-api/steal-governor.rst 57 58 It is recommended to build it as module and load the module 59 to enable it. 60 61source "drivers/virt/vboxguest/Kconfig" 62 63source "drivers/virt/nitro_enclaves/Kconfig" 64 65source "drivers/virt/acrn/Kconfig" 66 67endif 68 69source "drivers/virt/coco/Kconfig" 70