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Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001#
2# KVM configuration
3#
4
Avi Kivity0ba12d12009-05-21 16:45:19 +03005source "virt/kvm/Kconfig"
Avi Kivity5d9b8e32009-01-04 18:04:18 +02006
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05007menuconfig 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
Hollis Blanchard74ef7402008-11-07 13:15:13 -060020 bool
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -050021 select PREEMPT_NOTIFIERS
22 select ANON_INODES
Alexander Graf0e673fb2012-10-09 00:06:20 +020023 select HAVE_KVM_EVENTFD
Hollis Blanchard74ef7402008-11-07 13:15:13 -060024
Alexander Grafc14dea02010-04-16 00:11:41 +020025config KVM_BOOK3S_HANDLER
26 bool
27
Alexander Graf4f841392010-04-16 00:11:58 +020028config KVM_BOOK3S_32_HANDLER
29 bool
30 select KVM_BOOK3S_HANDLER
Paul Mackerrasde56a942011-06-29 00:21:34 +000031 select KVM_MMIO
Alexander Graf4f841392010-04-16 00:11:58 +020032
Alexander Grafc4f9c772009-10-30 05:47:24 +000033config KVM_BOOK3S_64_HANDLER
34 bool
Alexander Grafc14dea02010-04-16 00:11:41 +020035 select KVM_BOOK3S_HANDLER
Alexander Grafc4f9c772009-10-30 05:47:24 +000036
Aneesh Kumar K.V7aa79932013-10-07 22:17:51 +053037config KVM_BOOK3S_PR_POSSIBLE
Paul Mackerrasde56a942011-06-29 00:21:34 +000038 bool
39 select KVM_MMIO
Alexander Graf9b0cb3c2012-08-10 13:23:55 +020040 select MMU_NOTIFIER
Paul Mackerrasde56a942011-06-29 00:21:34 +000041
Aneesh Kumar K.V9975f5e2013-10-07 22:17:52 +053042config KVM_BOOK3S_HV_POSSIBLE
43 bool
44
Alexander Graf4f841392010-04-16 00:11:58 +020045config KVM_BOOK3S_32
46 tristate "KVM support for PowerPC book3s_32 processors"
Kees Cook07ff8b52013-01-16 18:53:22 -080047 depends on PPC_BOOK3S_32 && !SMP && !PTE_64BIT
Alexander Graf4f841392010-04-16 00:11:58 +020048 select KVM
49 select KVM_BOOK3S_32_HANDLER
Aneesh Kumar K.V7aa79932013-10-07 22:17:51 +053050 select KVM_BOOK3S_PR_POSSIBLE
Alexander Graf4f841392010-04-16 00:11:58 +020051 ---help---
52 Support running unmodified book3s_32 guest kernels
53 in virtual machines on book3s_32 host processors.
54
55 This module provides access to the hardware capabilities through
56 a character device node named /dev/kvm.
57
58 If unsure, say N.
59
Alexander Grafc4f9c772009-10-30 05:47:24 +000060config KVM_BOOK3S_64
61 tristate "KVM support for PowerPC book3s_64 processors"
Kees Cook07ff8b52013-01-16 18:53:22 -080062 depends on PPC_BOOK3S_64
Alexander Grafc4f9c772009-10-30 05:47:24 +000063 select KVM_BOOK3S_64_HANDLER
Paul Mackerrasde56a942011-06-29 00:21:34 +000064 select KVM
Aneesh Kumar K.V9975f5e2013-10-07 22:17:52 +053065 select KVM_BOOK3S_PR_POSSIBLE if !KVM_BOOK3S_HV_POSSIBLE
Alexander Grafc4f9c772009-10-30 05:47:24 +000066 ---help---
67 Support running unmodified book3s_64 and book3s_32 guest kernels
68 in virtual machines on book3s_64 host processors.
69
70 This module provides access to the hardware capabilities through
71 a character device node named /dev/kvm.
72
73 If unsure, say N.
74
Paul Mackerrasde56a942011-06-29 00:21:34 +000075config KVM_BOOK3S_64_HV
Aneesh Kumar K.V2ba9f0d2013-10-07 22:17:59 +053076 tristate "KVM support for POWER7 and PPC970 using hypervisor mode in host"
Paul Mackerrasde56a942011-06-29 00:21:34 +000077 depends on KVM_BOOK3S_64
Aneesh Kumar K.V9975f5e2013-10-07 22:17:52 +053078 select KVM_BOOK3S_HV_POSSIBLE
Paul Mackerras342d3db2011-12-12 12:38:05 +000079 select MMU_NOTIFIER
Aneesh Kumar K.Vfa61a4e32013-07-02 11:15:16 +053080 select CMA
Paul Mackerrasde56a942011-06-29 00:21:34 +000081 ---help---
82 Support running unmodified book3s_64 guest kernels in
Paul Mackerras9e368f22011-06-29 00:40:08 +000083 virtual machines on POWER7 and PPC970 processors that have
84 hypervisor mode available to the host.
Paul Mackerrasde56a942011-06-29 00:21:34 +000085
86 If you say Y here, KVM will use the hardware virtualization
87 facilities of POWER7 (and later) processors, meaning that
88 guest operating systems will run at full hardware speed
89 using supervisor and user modes. However, this also means
90 that KVM is not usable under PowerVM (pHyp), is only usable
Paul Mackerras9e368f22011-06-29 00:40:08 +000091 on POWER7 (or later) processors and PPC970-family processors,
92 and cannot emulate a different processor from the host processor.
Paul Mackerrasde56a942011-06-29 00:21:34 +000093
94 If unsure, say N.
95
96config KVM_BOOK3S_64_PR
Aneesh Kumar K.V2ba9f0d2013-10-07 22:17:59 +053097 tristate "KVM support without using hypervisor mode in host"
98 depends on KVM_BOOK3S_64
Aneesh Kumar K.V7aa79932013-10-07 22:17:51 +053099 select KVM_BOOK3S_PR_POSSIBLE
Aneesh Kumar K.V9975f5e2013-10-07 22:17:52 +0530100 ---help---
101 Support running guest kernels in virtual machines on processors
102 without using hypervisor mode in the host, by running the
103 guest in user mode (problem state) and emulating all
104 privileged instructions and registers.
105
106 This is not as fast as using hypervisor mode, but works on
107 machines where hypervisor mode is not available or not usable,
108 and can emulate processors that are different from the host
109 processor, including emulating 32-bit processors on a 64-bit
110 host.
Paul Mackerrasde56a942011-06-29 00:21:34 +0000111
Scott Woodd30f6e42011-12-20 15:34:43 +0000112config KVM_BOOKE_HV
113 bool
114
Hollis Blanchard73e75b42008-12-02 15:51:57 -0600115config KVM_EXIT_TIMING
116 bool "Detailed exit timing"
Alexander Grafb2677b82014-07-25 10:38:59 +0200117 depends on KVM_E500V2 || KVM_E500MC
Hollis Blanchard73e75b42008-12-02 15:51:57 -0600118 ---help---
119 Calculate elapsed time for every exit/enter cycle. A per-vcpu
120 report is available in debugfs kvm/vm#_vcpu#_timing.
121 The overhead is relatively small, however it is not recommended for
122 production environments.
123
124 If unsure, say N.
125
Alexander Grafbf7ca4b2012-02-15 23:40:00 +0000126config KVM_E500V2
127 bool "KVM support for PowerPC E500v2 processors"
Kees Cook07ff8b52013-01-16 18:53:22 -0800128 depends on E500 && !PPC_E500MC
Hollis Blanchardbc8080c2009-01-03 16:23:10 -0600129 select KVM
Paul Mackerrasde56a942011-06-29 00:21:34 +0000130 select KVM_MMIO
Alexander Graf862d31f2012-07-31 00:19:50 +0200131 select MMU_NOTIFIER
Hollis Blanchardbc8080c2009-01-03 16:23:10 -0600132 ---help---
133 Support running unmodified E500 guest kernels in virtual machines on
Alexander Grafbf7ca4b2012-02-15 23:40:00 +0000134 E500v2 host processors.
Hollis Blanchardbc8080c2009-01-03 16:23:10 -0600135
136 This module provides access to the hardware capabilities through
137 a character device node named /dev/kvm.
138
139 If unsure, say N.
140
Scott Wood73196cd32011-12-20 15:34:47 +0000141config KVM_E500MC
Mihai Caramand9ce6042013-04-11 00:03:14 +0000142 bool "KVM support for PowerPC E500MC/E5500/E6500 processors"
Kees Cook07ff8b52013-01-16 18:53:22 -0800143 depends on PPC_E500MC
Scott Wood73196cd32011-12-20 15:34:47 +0000144 select KVM
145 select KVM_MMIO
146 select KVM_BOOKE_HV
Alexander Graf862d31f2012-07-31 00:19:50 +0200147 select MMU_NOTIFIER
Scott Wood73196cd32011-12-20 15:34:47 +0000148 ---help---
Mihai Caramand9ce6042013-04-11 00:03:14 +0000149 Support running unmodified E500MC/E5500/E6500 guest kernels in
150 virtual machines on E500MC/E5500/E6500 host processors.
Scott Wood73196cd32011-12-20 15:34:47 +0000151
152 This module provides access to the hardware capabilities through
153 a character device node named /dev/kvm.
154
155 If unsure, say N.
156
Scott Wood5df554ad2013-04-12 14:08:46 +0000157config KVM_MPIC
158 bool "KVM in-kernel MPIC emulation"
Alexander Graf447a03c2013-04-17 01:54:26 +0200159 depends on KVM && E500
Alexander Grafde9ba2f2013-04-16 17:42:19 +0200160 select HAVE_KVM_IRQCHIP
Paul Mackerras297e2102014-06-30 20:51:13 +1000161 select HAVE_KVM_IRQFD
Alexander Grafde9ba2f2013-04-16 17:42:19 +0200162 select HAVE_KVM_IRQ_ROUTING
163 select HAVE_KVM_MSI
Scott Wood5df554ad2013-04-12 14:08:46 +0000164 help
165 Enable support for emulating MPIC devices inside the
166 host kernel, rather than relying on userspace to emulate.
167 Currently, support is limited to certain versions of
168 Freescale's MPIC implementation.
169
Benjamin Herrenschmidtbc5ad3f2013-04-17 20:30:26 +0000170config KVM_XICS
171 bool "KVM in-kernel XICS emulation"
172 depends on KVM_BOOK3S_64 && !KVM_MPIC
Paul Mackerras25a2150b2014-06-30 20:51:14 +1000173 select HAVE_KVM_IRQCHIP
174 select HAVE_KVM_IRQFD
Anton Blanchard476ce5ef02014-12-03 13:30:42 +1100175 default y
Benjamin Herrenschmidtbc5ad3f2013-04-17 20:30:26 +0000176 ---help---
177 Include support for the XICS (eXternal Interrupt Controller
178 Specification) interrupt controller architecture used on
179 IBM POWER (pSeries) servers.
180
Michael S. Tsirkin3a4d5c92010-01-14 06:17:27 +0000181source drivers/vhost/Kconfig
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500182
183endif # VIRTUALIZATION