1# SPDX-License-Identifier: GPL-2.0 2# 3# KVM configuration 4# 5 6source "virt/kvm/Kconfig" 7 8menuconfig VIRTUALIZATION 9 bool "Virtualization" 10 depends on HAVE_KVM || X86 11 default y 12 help 13 Say Y here to get to see options for using your Linux host to run other 14 operating systems inside virtual machines (guests). 15 This option alone does not add any kernel code. 16 17 If you say N, all options in this submenu will be skipped and disabled. 18 19if VIRTUALIZATION 20 21config KVM 22 tristate "Kernel-based Virtual Machine (KVM) support" 23 depends on HAVE_KVM 24 depends on HIGH_RES_TIMERS 25 # for TASKSTATS/TASK_DELAY_ACCT: 26 depends on NET && MULTIUSER 27 depends on X86_LOCAL_APIC 28 select PREEMPT_NOTIFIERS 29 select MMU_NOTIFIER 30 select HAVE_KVM_IRQCHIP 31 select HAVE_KVM_IRQFD 32 select IRQ_BYPASS_MANAGER 33 select HAVE_KVM_IRQ_BYPASS 34 select HAVE_KVM_IRQ_ROUTING 35 select HAVE_KVM_EVENTFD 36 select KVM_ASYNC_PF 37 select USER_RETURN_NOTIFIER 38 select KVM_MMIO 39 select TASKSTATS 40 select TASK_DELAY_ACCT 41 select PERF_EVENTS 42 select HAVE_KVM_MSI 43 select HAVE_KVM_CPU_RELAX_INTERCEPT 44 select HAVE_KVM_NO_POLL 45 select KVM_XFER_TO_GUEST_WORK 46 select KVM_GENERIC_DIRTYLOG_READ_PROTECT 47 select KVM_VFIO 48 select SRCU 49 help 50 Support hosting fully virtualized guest machines using hardware 51 virtualization extensions. You will need a fairly recent 52 processor equipped with virtualization extensions. You will also 53 need to select one or more of the processor modules below. 54 55 This module provides access to the hardware capabilities through 56 a character device node named /dev/kvm. 57 58 To compile this as a module, choose M here: the module 59 will be called kvm. 60 61 If unsure, say N. 62 63config KVM_WERROR 64 bool "Compile KVM with -Werror" 65 # KASAN may cause the build to fail due to larger frames 66 default y if X86_64 && !KASAN 67 # We use the dependency on !COMPILE_TEST to not be enabled 68 # blindly in allmodconfig or allyesconfig configurations 69 depends on KVM 70 depends on (X86_64 && !KASAN) || !COMPILE_TEST 71 depends on EXPERT 72 help 73 Add -Werror to the build flags for KVM. 74 75 If in doubt, say "N". 76 77config KVM_INTEL 78 tristate "KVM for Intel (and compatible) processors support" 79 depends on KVM && IA32_FEAT_CTL 80 help 81 Provides support for KVM on processors equipped with Intel's VT 82 extensions, a.k.a. Virtual Machine Extensions (VMX). 83 84 To compile this as a module, choose M here: the module 85 will be called kvm-intel. 86 87config KVM_AMD 88 tristate "KVM for AMD processors support" 89 depends on KVM 90 help 91 Provides support for KVM on AMD processors equipped with the AMD-V 92 (SVM) extensions. 93 94 To compile this as a module, choose M here: the module 95 will be called kvm-amd. 96 97config KVM_AMD_SEV 98 def_bool y 99 bool "AMD Secure Encrypted Virtualization (SEV) support" 100 depends on KVM_AMD && X86_64 101 depends on CRYPTO_DEV_SP_PSP && !(KVM_AMD=y && CRYPTO_DEV_CCP_DD=m) 102 help 103 Provides support for launching Encrypted VMs (SEV) and Encrypted VMs 104 with Encrypted State (SEV-ES) on AMD processors. 105 106config KVM_XEN 107 bool "Support for Xen hypercall interface" 108 depends on KVM 109 help 110 Provides KVM support for the hosting Xen HVM guests and 111 passing Xen hypercalls to userspace. 112 113 If in doubt, say "N". 114 115config KVM_MMU_AUDIT 116 bool "Audit KVM MMU" 117 depends on KVM && TRACEPOINTS 118 help 119 This option adds a R/W kVM module parameter 'mmu_audit', which allows 120 auditing of KVM MMU events at runtime. 121 122endif # VIRTUALIZATION 123