1# SPDX-License-Identifier: GPL-2.0 2# 3# KVM configuration 4# 5 6source "virt/lib/Kconfig" 7source "virt/kvm/Kconfig" 8 9menuconfig VIRTUALIZATION 10 bool "Virtualization" 11 help 12 Say Y here to get to see options for using your Linux host to run 13 other operating systems inside virtual machines (guests). 14 This option alone does not add any kernel code. 15 16 If you say N, all options in this submenu will be skipped and 17 disabled. 18 19if VIRTUALIZATION 20 21menuconfig KVM 22 bool "Kernel-based Virtual Machine (KVM) support" 23 depends on HAVE_KVM 24 select KVM_GENERIC_HARDWARE_ENABLING 25 select MMU_NOTIFIER 26 select PREEMPT_NOTIFIERS 27 select HAVE_KVM_CPU_RELAX_INTERCEPT 28 select HAVE_KVM_ARCH_TLB_FLUSH_ALL 29 select KVM_MMIO 30 select KVM_GENERIC_DIRTYLOG_READ_PROTECT 31 select KVM_XFER_TO_GUEST_WORK 32 select SRCU 33 select KVM_VFIO 34 select HAVE_KVM_EVENTFD 35 select HAVE_KVM_IRQFD 36 select HAVE_KVM_DIRTY_RING_ACQ_REL 37 select NEED_KVM_DIRTY_RING_WITH_BITMAP 38 select HAVE_KVM_MSI 39 select HAVE_KVM_IRQCHIP 40 select HAVE_KVM_IRQ_ROUTING 41 select IRQ_BYPASS_MANAGER 42 select HAVE_KVM_IRQ_BYPASS 43 select HAVE_KVM_VCPU_RUN_PID_CHANGE 44 select SCHED_INFO 45 select GUEST_PERF_EVENTS if PERF_EVENTS 46 select INTERVAL_TREE 47 help 48 Support hosting virtualized guest machines. 49 50 If unsure, say N. 51 52config NVHE_EL2_DEBUG 53 bool "Debug mode for non-VHE EL2 object" 54 depends on KVM 55 help 56 Say Y here to enable the debug mode for the non-VHE KVM EL2 object. 57 Failure reports will BUG() in the hypervisor. This is intended for 58 local EL2 hypervisor development. 59 60 If unsure, say N. 61 62config PROTECTED_NVHE_STACKTRACE 63 bool "Protected KVM hypervisor stacktraces" 64 depends on NVHE_EL2_DEBUG 65 default n 66 help 67 Say Y here to enable pKVM hypervisor stacktraces on hyp_panic() 68 69 If using protected nVHE mode, but cannot afford the associated 70 memory cost (less than 0.75 page per CPU) of pKVM stacktraces, 71 say N. 72 73 If unsure, or not using protected nVHE (pKVM), say N. 74 75endif # VIRTUALIZATION 76