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 depends on X86_LOCAL_APIC 26 select PREEMPT_NOTIFIERS 27 select MMU_NOTIFIER 28 select HAVE_KVM_IRQCHIP 29 select HAVE_KVM_PFNCACHE 30 select HAVE_KVM_IRQFD 31 select HAVE_KVM_DIRTY_RING 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 SCHED_INFO 40 select PERF_EVENTS 41 select GUEST_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 select INTERVAL_TREE 50 select HAVE_KVM_PM_NOTIFIER if PM 51 help 52 Support hosting fully virtualized guest machines using hardware 53 virtualization extensions. You will need a fairly recent 54 processor equipped with virtualization extensions. You will also 55 need to select one or more of the processor modules below. 56 57 This module provides access to the hardware capabilities through 58 a character device node named /dev/kvm. 59 60 To compile this as a module, choose M here: the module 61 will be called kvm. 62 63 If unsure, say N. 64 65config KVM_WERROR 66 bool "Compile KVM with -Werror" 67 # KASAN may cause the build to fail due to larger frames 68 default y if X86_64 && !KASAN 69 # We use the dependency on !COMPILE_TEST to not be enabled 70 # blindly in allmodconfig or allyesconfig configurations 71 depends on KVM 72 depends on (X86_64 && !KASAN) || !COMPILE_TEST 73 depends on EXPERT 74 help 75 Add -Werror to the build flags for KVM. 76 77 If in doubt, say "N". 78 79config KVM_INTEL 80 tristate "KVM for Intel (and compatible) processors support" 81 depends on KVM && IA32_FEAT_CTL 82 help 83 Provides support for KVM on processors equipped with Intel's VT 84 extensions, a.k.a. Virtual Machine Extensions (VMX). 85 86 To compile this as a module, choose M here: the module 87 will be called kvm-intel. 88 89config X86_SGX_KVM 90 bool "Software Guard eXtensions (SGX) Virtualization" 91 depends on X86_SGX && KVM_INTEL 92 help 93 94 Enables KVM guests to create SGX enclaves. 95 96 This includes support to expose "raw" unreclaimable enclave memory to 97 guests via a device node, e.g. /dev/sgx_vepc. 98 99 If unsure, say N. 100 101config KVM_AMD 102 tristate "KVM for AMD processors support" 103 depends on KVM 104 help 105 Provides support for KVM on AMD processors equipped with the AMD-V 106 (SVM) extensions. 107 108 To compile this as a module, choose M here: the module 109 will be called kvm-amd. 110 111config KVM_AMD_SEV 112 def_bool y 113 bool "AMD Secure Encrypted Virtualization (SEV) support" 114 depends on KVM_AMD && X86_64 115 depends on CRYPTO_DEV_SP_PSP && !(KVM_AMD=y && CRYPTO_DEV_CCP_DD=m) 116 help 117 Provides support for launching Encrypted VMs (SEV) and Encrypted VMs 118 with Encrypted State (SEV-ES) on AMD processors. 119 120config KVM_XEN 121 bool "Support for Xen hypercall interface" 122 depends on KVM 123 help 124 Provides KVM support for the hosting Xen HVM guests and 125 passing Xen hypercalls to userspace. 126 127 If in doubt, say "N". 128 129config KVM_EXTERNAL_WRITE_TRACKING 130 bool 131 132endif # VIRTUALIZATION 133