tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 (X86_64 && !KASAN) || !COMPILE_TEST
70 depends on EXPERT
71 help
72 Add -Werror to the build flags for KVM.
73
74 If in doubt, say "N".
75
76config KVM_INTEL
77 tristate "KVM for Intel (and compatible) processors support"
78 depends on KVM && IA32_FEAT_CTL
79 help
80 Provides support for KVM on processors equipped with Intel's VT
81 extensions, a.k.a. Virtual Machine Extensions (VMX).
82
83 To compile this as a module, choose M here: the module
84 will be called kvm-intel.
85
86config KVM_AMD
87 tristate "KVM for AMD processors support"
88 depends on KVM
89 help
90 Provides support for KVM on AMD processors equipped with the AMD-V
91 (SVM) extensions.
92
93 To compile this as a module, choose M here: the module
94 will be called kvm-amd.
95
96config KVM_AMD_SEV
97 def_bool y
98 bool "AMD Secure Encrypted Virtualization (SEV) support"
99 depends on KVM_AMD && X86_64
100 depends on CRYPTO_DEV_SP_PSP && !(KVM_AMD=y && CRYPTO_DEV_CCP_DD=m)
101 help
102 Provides support for launching Encrypted VMs on AMD processors.
103
104config KVM_MMU_AUDIT
105 bool "Audit KVM MMU"
106 depends on KVM && TRACEPOINTS
107 help
108 This option adds a R/W kVM module parameter 'mmu_audit', which allows
109 auditing of KVM MMU events at runtime.
110
111endif # VIRTUALIZATION