tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#
2# KVM configuration
3#
4
5source "virt/kvm/Kconfig"
6
7menuconfig VIRTUALIZATION
8 bool "Virtualization"
9 ---help---
10 Say Y here to get to see options for using your Linux host to run
11 other operating systems inside virtual machines (guests).
12 This option alone does not add any kernel code.
13
14 If you say N, all options in this submenu will be skipped and
15 disabled.
16
17if VIRTUALIZATION
18
19config KVM
20 bool
21 select PREEMPT_NOTIFIERS
22 select ANON_INODES
23
24config KVM_BOOK3S_HANDLER
25 bool
26
27config KVM_BOOK3S_32_HANDLER
28 bool
29 select KVM_BOOK3S_HANDLER
30 select KVM_MMIO
31
32config KVM_BOOK3S_64_HANDLER
33 bool
34 select KVM_BOOK3S_HANDLER
35
36config KVM_BOOK3S_PR
37 bool
38 select KVM_MMIO
39
40config KVM_BOOK3S_32
41 tristate "KVM support for PowerPC book3s_32 processors"
42 depends on EXPERIMENTAL && PPC_BOOK3S_32 && !SMP && !PTE_64BIT
43 select KVM
44 select KVM_BOOK3S_32_HANDLER
45 select KVM_BOOK3S_PR
46 ---help---
47 Support running unmodified book3s_32 guest kernels
48 in virtual machines on book3s_32 host processors.
49
50 This module provides access to the hardware capabilities through
51 a character device node named /dev/kvm.
52
53 If unsure, say N.
54
55config KVM_BOOK3S_64
56 tristate "KVM support for PowerPC book3s_64 processors"
57 depends on EXPERIMENTAL && PPC_BOOK3S_64
58 select KVM_BOOK3S_64_HANDLER
59 select KVM
60 ---help---
61 Support running unmodified book3s_64 and book3s_32 guest kernels
62 in virtual machines on book3s_64 host processors.
63
64 This module provides access to the hardware capabilities through
65 a character device node named /dev/kvm.
66
67 If unsure, say N.
68
69config KVM_BOOK3S_64_HV
70 bool "KVM support for POWER7 and PPC970 using hypervisor mode in host"
71 depends on KVM_BOOK3S_64
72 select MMU_NOTIFIER
73 ---help---
74 Support running unmodified book3s_64 guest kernels in
75 virtual machines on POWER7 and PPC970 processors that have
76 hypervisor mode available to the host.
77
78 If you say Y here, KVM will use the hardware virtualization
79 facilities of POWER7 (and later) processors, meaning that
80 guest operating systems will run at full hardware speed
81 using supervisor and user modes. However, this also means
82 that KVM is not usable under PowerVM (pHyp), is only usable
83 on POWER7 (or later) processors and PPC970-family processors,
84 and cannot emulate a different processor from the host processor.
85
86 If unsure, say N.
87
88config KVM_BOOK3S_64_PR
89 def_bool y
90 depends on KVM_BOOK3S_64 && !KVM_BOOK3S_64_HV
91 select KVM_BOOK3S_PR
92
93config KVM_BOOKE_HV
94 bool
95
96config KVM_440
97 bool "KVM support for PowerPC 440 processors"
98 depends on EXPERIMENTAL && 44x
99 select KVM
100 select KVM_MMIO
101 ---help---
102 Support running unmodified 440 guest kernels in virtual machines on
103 440 host processors.
104
105 This module provides access to the hardware capabilities through
106 a character device node named /dev/kvm.
107
108 If unsure, say N.
109
110config KVM_EXIT_TIMING
111 bool "Detailed exit timing"
112 depends on KVM_440 || KVM_E500V2 || KVM_E500MC
113 ---help---
114 Calculate elapsed time for every exit/enter cycle. A per-vcpu
115 report is available in debugfs kvm/vm#_vcpu#_timing.
116 The overhead is relatively small, however it is not recommended for
117 production environments.
118
119 If unsure, say N.
120
121config KVM_E500V2
122 bool "KVM support for PowerPC E500v2 processors"
123 depends on EXPERIMENTAL && E500 && !PPC_E500MC
124 select KVM
125 select KVM_MMIO
126 ---help---
127 Support running unmodified E500 guest kernels in virtual machines on
128 E500v2 host processors.
129
130 This module provides access to the hardware capabilities through
131 a character device node named /dev/kvm.
132
133 If unsure, say N.
134
135config KVM_E500MC
136 bool "KVM support for PowerPC E500MC/E5500 processors"
137 depends on EXPERIMENTAL && PPC_E500MC
138 select KVM
139 select KVM_MMIO
140 select KVM_BOOKE_HV
141 ---help---
142 Support running unmodified E500MC/E5500 (32-bit) guest kernels in
143 virtual machines on E500MC/E5500 host processors.
144
145 This module provides access to the hardware capabilities through
146 a character device node named /dev/kvm.
147
148 If unsure, say N.
149
150source drivers/vhost/Kconfig
151
152endif # VIRTUALIZATION