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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
Pranith Kumar83fe27e2014-12-05 11:24:45 -050024 select SRCU
Hollis Blanchard74ef7402008-11-07 13:15:13 -060025
Alexander Grafc14dea02010-04-16 00:11:41 +020026config KVM_BOOK3S_HANDLER
27 bool
28
Alexander Graf4f841392010-04-16 00:11:58 +020029config KVM_BOOK3S_32_HANDLER
30 bool
31 select KVM_BOOK3S_HANDLER
Paul Mackerrasde56a942011-06-29 00:21:34 +000032 select KVM_MMIO
Alexander Graf4f841392010-04-16 00:11:58 +020033
Alexander Grafc4f9c772009-10-30 05:47:24 +000034config KVM_BOOK3S_64_HANDLER
35 bool
Alexander Grafc14dea02010-04-16 00:11:41 +020036 select KVM_BOOK3S_HANDLER
Alexander Grafc4f9c772009-10-30 05:47:24 +000037
Aneesh Kumar K.V7aa79932013-10-07 22:17:51 +053038config KVM_BOOK3S_PR_POSSIBLE
Paul Mackerrasde56a942011-06-29 00:21:34 +000039 bool
40 select KVM_MMIO
Alexander Graf9b0cb3c2012-08-10 13:23:55 +020041 select MMU_NOTIFIER
Paul Mackerrasde56a942011-06-29 00:21:34 +000042
Aneesh Kumar K.V9975f5e2013-10-07 22:17:52 +053043config KVM_BOOK3S_HV_POSSIBLE
44 bool
45
Alexander Graf4f841392010-04-16 00:11:58 +020046config KVM_BOOK3S_32
47 tristate "KVM support for PowerPC book3s_32 processors"
Kees Cook07ff8b52013-01-16 18:53:22 -080048 depends on PPC_BOOK3S_32 && !SMP && !PTE_64BIT
Alexander Graf4f841392010-04-16 00:11:58 +020049 select KVM
50 select KVM_BOOK3S_32_HANDLER
Aneesh Kumar K.V7aa79932013-10-07 22:17:51 +053051 select KVM_BOOK3S_PR_POSSIBLE
Alexander Graf4f841392010-04-16 00:11:58 +020052 ---help---
53 Support running unmodified book3s_32 guest kernels
54 in virtual machines on book3s_32 host processors.
55
56 This module provides access to the hardware capabilities through
57 a character device node named /dev/kvm.
58
59 If unsure, say N.
60
Alexander Grafc4f9c772009-10-30 05:47:24 +000061config KVM_BOOK3S_64
62 tristate "KVM support for PowerPC book3s_64 processors"
Kees Cook07ff8b52013-01-16 18:53:22 -080063 depends on PPC_BOOK3S_64
Alexander Grafc4f9c772009-10-30 05:47:24 +000064 select KVM_BOOK3S_64_HANDLER
Paul Mackerrasde56a942011-06-29 00:21:34 +000065 select KVM
Aneesh Kumar K.V9975f5e2013-10-07 22:17:52 +053066 select KVM_BOOK3S_PR_POSSIBLE if !KVM_BOOK3S_HV_POSSIBLE
Alexander Grafc4f9c772009-10-30 05:47:24 +000067 ---help---
68 Support running unmodified book3s_64 and book3s_32 guest kernels
69 in virtual machines on book3s_64 host processors.
70
71 This module provides access to the hardware capabilities through
72 a character device node named /dev/kvm.
73
74 If unsure, say N.
75
Paul Mackerrasde56a942011-06-29 00:21:34 +000076config KVM_BOOK3S_64_HV
Thomas Huth129fd422015-05-22 11:41:01 +020077 tristate "KVM for POWER7 and later using hypervisor mode in host"
Shreyas B. Prabhua7e73e72015-04-16 16:28:09 +053078 depends on KVM_BOOK3S_64 && PPC_POWERNV
Aneesh Kumar K.V9975f5e2013-10-07 22:17:52 +053079 select KVM_BOOK3S_HV_POSSIBLE
Paul Mackerras342d3db2011-12-12 12:38:05 +000080 select MMU_NOTIFIER
Aneesh Kumar K.Vfa61a4e32013-07-02 11:15:16 +053081 select CMA
Paul Mackerrasde56a942011-06-29 00:21:34 +000082 ---help---
83 Support running unmodified book3s_64 guest kernels in
Thomas Huth129fd422015-05-22 11:41:01 +020084 virtual machines on POWER7 and newer processors that have
Paul Mackerras9e368f22011-06-29 00:40:08 +000085 hypervisor mode available to the host.
Paul Mackerrasde56a942011-06-29 00:21:34 +000086
87 If you say Y here, KVM will use the hardware virtualization
88 facilities of POWER7 (and later) processors, meaning that
89 guest operating systems will run at full hardware speed
90 using supervisor and user modes. However, this also means
91 that KVM is not usable under PowerVM (pHyp), is only usable
Thomas Huth129fd422015-05-22 11:41:01 +020092 on POWER7 or later processors, and cannot emulate a
93 different processor from the host processor.
Paul Mackerrasde56a942011-06-29 00:21:34 +000094
95 If unsure, say N.
96
97config KVM_BOOK3S_64_PR
Aneesh Kumar K.V2ba9f0d2013-10-07 22:17:59 +053098 tristate "KVM support without using hypervisor mode in host"
99 depends on KVM_BOOK3S_64
Aneesh Kumar K.V7aa79932013-10-07 22:17:51 +0530100 select KVM_BOOK3S_PR_POSSIBLE
Aneesh Kumar K.V9975f5e2013-10-07 22:17:52 +0530101 ---help---
102 Support running guest kernels in virtual machines on processors
103 without using hypervisor mode in the host, by running the
104 guest in user mode (problem state) and emulating all
105 privileged instructions and registers.
106
107 This is not as fast as using hypervisor mode, but works on
108 machines where hypervisor mode is not available or not usable,
109 and can emulate processors that are different from the host
110 processor, including emulating 32-bit processors on a 64-bit
111 host.
Paul Mackerrasde56a942011-06-29 00:21:34 +0000112
Paul Mackerrasb6c295d2015-03-28 14:21:02 +1100113config KVM_BOOK3S_HV_EXIT_TIMING
114 bool "Detailed timing for hypervisor real-mode code"
115 depends on KVM_BOOK3S_HV_POSSIBLE && DEBUG_FS
116 ---help---
117 Calculate time taken for each vcpu in the real-mode guest entry,
118 exit, and interrupt handling code, plus time spent in the guest
119 and in nap mode due to idle (cede) while other threads are still
120 in the guest. The total, minimum and maximum times in nanoseconds
121 together with the number of executions are reported in debugfs in
122 kvm/vm#/vcpu#/timings. The overhead is of the order of 30 - 40
123 ns per exit on POWER8.
124
125 If unsure, say N.
126
Scott Woodd30f6e42011-12-20 15:34:43 +0000127config KVM_BOOKE_HV
128 bool
129
Hollis Blanchard73e75b42008-12-02 15:51:57 -0600130config KVM_EXIT_TIMING
131 bool "Detailed exit timing"
Alexander Grafb2677b82014-07-25 10:38:59 +0200132 depends on KVM_E500V2 || KVM_E500MC
Hollis Blanchard73e75b42008-12-02 15:51:57 -0600133 ---help---
134 Calculate elapsed time for every exit/enter cycle. A per-vcpu
135 report is available in debugfs kvm/vm#_vcpu#_timing.
136 The overhead is relatively small, however it is not recommended for
137 production environments.
138
139 If unsure, say N.
140
Alexander Grafbf7ca4b2012-02-15 23:40:00 +0000141config KVM_E500V2
142 bool "KVM support for PowerPC E500v2 processors"
Kees Cook07ff8b52013-01-16 18:53:22 -0800143 depends on E500 && !PPC_E500MC
Hollis Blanchardbc8080c2009-01-03 16:23:10 -0600144 select KVM
Paul Mackerrasde56a942011-06-29 00:21:34 +0000145 select KVM_MMIO
Alexander Graf862d31f2012-07-31 00:19:50 +0200146 select MMU_NOTIFIER
Hollis Blanchardbc8080c2009-01-03 16:23:10 -0600147 ---help---
148 Support running unmodified E500 guest kernels in virtual machines on
Alexander Grafbf7ca4b2012-02-15 23:40:00 +0000149 E500v2 host processors.
Hollis Blanchardbc8080c2009-01-03 16:23:10 -0600150
151 This module provides access to the hardware capabilities through
152 a character device node named /dev/kvm.
153
154 If unsure, say N.
155
Scott Wood73196cd2011-12-20 15:34:47 +0000156config KVM_E500MC
Mihai Caramand9ce6042013-04-11 00:03:14 +0000157 bool "KVM support for PowerPC E500MC/E5500/E6500 processors"
Kees Cook07ff8b52013-01-16 18:53:22 -0800158 depends on PPC_E500MC
Scott Wood73196cd2011-12-20 15:34:47 +0000159 select KVM
160 select KVM_MMIO
161 select KVM_BOOKE_HV
Alexander Graf862d31f2012-07-31 00:19:50 +0200162 select MMU_NOTIFIER
Scott Wood73196cd2011-12-20 15:34:47 +0000163 ---help---
Mihai Caramand9ce6042013-04-11 00:03:14 +0000164 Support running unmodified E500MC/E5500/E6500 guest kernels in
165 virtual machines on E500MC/E5500/E6500 host processors.
Scott Wood73196cd2011-12-20 15:34:47 +0000166
167 This module provides access to the hardware capabilities through
168 a character device node named /dev/kvm.
169
170 If unsure, say N.
171
Scott Wood5df554a2013-04-12 14:08:46 +0000172config KVM_MPIC
173 bool "KVM in-kernel MPIC emulation"
Alexander Graf447a03c2013-04-17 01:54:26 +0200174 depends on KVM && E500
Alexander Grafde9ba2f2013-04-16 17:42:19 +0200175 select HAVE_KVM_IRQCHIP
Paul Mackerras297e2102014-06-30 20:51:13 +1000176 select HAVE_KVM_IRQFD
Alexander Grafde9ba2f2013-04-16 17:42:19 +0200177 select HAVE_KVM_IRQ_ROUTING
178 select HAVE_KVM_MSI
Scott Wood5df554a2013-04-12 14:08:46 +0000179 help
180 Enable support for emulating MPIC devices inside the
181 host kernel, rather than relying on userspace to emulate.
182 Currently, support is limited to certain versions of
183 Freescale's MPIC implementation.
184
Benjamin Herrenschmidtbc5ad3f2013-04-17 20:30:26 +0000185config KVM_XICS
186 bool "KVM in-kernel XICS emulation"
187 depends on KVM_BOOK3S_64 && !KVM_MPIC
Paul Mackerras25a2150b2014-06-30 20:51:14 +1000188 select HAVE_KVM_IRQCHIP
189 select HAVE_KVM_IRQFD
Anton Blanchard476ce5ef02014-12-03 13:30:42 +1100190 default y
Benjamin Herrenschmidtbc5ad3f2013-04-17 20:30:26 +0000191 ---help---
192 Include support for the XICS (eXternal Interrupt Controller
193 Specification) interrupt controller architecture used on
194 IBM POWER (pSeries) servers.
195
Michael S. Tsirkin3a4d5c94e2010-01-14 06:17:27 +0000196source drivers/vhost/Kconfig
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -0500197
198endif # VIRTUALIZATION