1# SPDX-License-Identifier: GPL-2.0 2# 3# KVM configuration 4# 5 6source "virt/kvm/Kconfig" 7 8menuconfig VIRTUALIZATION 9 bool "Virtualization" 10 help 11 Say Y here to get to see options for using your Linux host to run 12 other operating systems inside virtual machines (guests). 13 This option alone does not add any kernel code. 14 15 If you say N, all options in this submenu will be skipped and 16 disabled. 17 18if VIRTUALIZATION 19 20menuconfig KVM 21 bool "Kernel-based Virtual Machine (KVM) support" 22 select KVM_COMMON 23 select KVM_GENERIC_HARDWARE_ENABLING 24 select KVM_GENERIC_MMU_NOTIFIER 25 select HAVE_KVM_CPU_RELAX_INTERCEPT 26 select KVM_MMIO 27 select KVM_GENERIC_DIRTYLOG_READ_PROTECT 28 select VIRT_XFER_TO_GUEST_WORK 29 select KVM_VFIO 30 select HAVE_KVM_DIRTY_RING_ACQ_REL 31 select NEED_KVM_DIRTY_RING_WITH_BITMAP 32 select HAVE_KVM_MSI 33 select HAVE_KVM_IRQCHIP 34 select HAVE_KVM_IRQ_ROUTING 35 select HAVE_KVM_IRQ_BYPASS 36 select HAVE_KVM_READONLY_MEM 37 select HAVE_KVM_VCPU_RUN_PID_CHANGE 38 select SCHED_INFO 39 select GUEST_PERF_EVENTS if PERF_EVENTS 40 select KVM_GUEST_MEMFD 41 help 42 Support hosting virtualized guest machines. 43 44 If unsure, say N. 45 46config NVHE_EL2_DEBUG 47 bool "Debug mode for non-VHE EL2 object" 48 depends on KVM 49 help 50 Say Y here to enable the debug mode for the non-VHE KVM EL2 object. 51 Failure reports will BUG() in the hypervisor. This is intended for 52 local EL2 hypervisor development. 53 54 If unsure, say N. 55 56config PROTECTED_NVHE_STACKTRACE 57 bool "Protected KVM hypervisor stacktraces" 58 depends on NVHE_EL2_DEBUG 59 default n 60 help 61 Say Y here to enable pKVM hypervisor stacktraces on hyp_panic() 62 63 If using protected nVHE mode, but cannot afford the associated 64 memory cost (less than 0.75 page per CPU) of pKVM stacktraces, 65 say N. 66 67 If unsure, or not using protected nVHE (pKVM), say N. 68 69config PTDUMP_STAGE2_DEBUGFS 70 bool "Present the stage-2 pagetables to debugfs" 71 depends on KVM 72 depends on DEBUG_KERNEL 73 depends on DEBUG_FS 74 depends on ARCH_HAS_PTDUMP 75 select PTDUMP 76 default n 77 help 78 Say Y here if you want to show the stage-2 kernel pagetables 79 layout in a debugfs file. This information is only useful for kernel developers 80 who are working in architecture specific areas of the kernel. 81 It is probably not a good idea to enable this feature in a production 82 kernel. 83 84 If in doubt, say N. 85 86endif # VIRTUALIZATION 87