1 # SPDX-License-Identifier: GPL-2.0
2 #
3 # KVM configuration
4 #
5
6 source "virt/kvm/Kconfig"
7
8 menuconfig VIRTUALIZATION
9 bool "Virtualization"
10 help
11 Say Y here to get to see options for
12 other operating systems inside virtu
13 This option alone does not add any k
14
15 If you say N, all options in this su
16 disabled.
17
18 if VIRTUALIZATION
19
20 config KVM
21 bool
22 select KVM_COMMON
23 select HAVE_KVM_VCPU_ASYNC_IOCTL
24 select KVM_VFIO
25 select HAVE_KVM_IRQ_BYPASS
26
27 config KVM_BOOK3S_HANDLER
28 bool
29
30 config KVM_BOOK3S_32_HANDLER
31 bool
32 select KVM_BOOK3S_HANDLER
33 select KVM_MMIO
34
35 config KVM_BOOK3S_64_HANDLER
36 bool
37 select KVM_BOOK3S_HANDLER
38
39 config KVM_BOOK3S_PR_POSSIBLE
40 bool
41 select KVM_MMIO
42 select KVM_GENERIC_MMU_NOTIFIER
43
44 config KVM_BOOK3S_HV_POSSIBLE
45 bool
46
47 config KVM_BOOK3S_32
48 tristate "KVM support for PowerPC book
49 depends on PPC_BOOK3S_32 && !SMP && !P
50 depends on !CONTEXT_TRACKING_USER
51 select KVM
52 select KVM_BOOK3S_32_HANDLER
53 select KVM_BOOK3S_PR_POSSIBLE
54 select PPC_FPU
55 help
56 Support running unmodified book3s_32
57 in virtual machines on book3s_32 hos
58
59 This module provides access to the h
60 a character device node named /dev/k
61
62 If unsure, say N.
63
64 config KVM_BOOK3S_64
65 tristate "KVM support for PowerPC book
66 depends on PPC_BOOK3S_64
67 select KVM_BOOK3S_64_HANDLER
68 select KVM
69 select KVM_BOOK3S_PR_POSSIBLE if !KVM_
70 select PPC_64S_HASH_MMU
71 select SPAPR_TCE_IOMMU if IOMMU_SUPPOR
72 help
73 Support running unmodified book3s_64
74 in virtual machines on book3s_64 hos
75
76 This module provides access to the h
77 a character device node named /dev/k
78
79 If unsure, say N.
80
81 config KVM_BOOK3S_64_HV
82 tristate "KVM for POWER7 and later usi
83 depends on KVM_BOOK3S_64 && PPC_POWERN
84 select KVM_BOOK3S_HV_POSSIBLE
85 select KVM_GENERIC_MMU_NOTIFIER
86 select CMA
87 help
88 Support running unmodified book3s_64
89 virtual machines on POWER7 and newer
90 hypervisor mode available to the hos
91
92 If you say Y here, KVM will use the
93 facilities of POWER7 (and later) pro
94 guest operating systems will run at
95 using supervisor and user modes. Ho
96 that KVM is not usable under PowerVM
97 on POWER7 or later processors, and c
98 different processor from the host pr
99
100 If unsure, say N.
101
102 config KVM_BOOK3S_64_PR
103 tristate "KVM support without using hy
104 depends on KVM_BOOK3S_64
105 depends on !CONTEXT_TRACKING_USER
106 select KVM_BOOK3S_PR_POSSIBLE
107 help
108 Support running guest kernels in vir
109 without using hypervisor mode in the
110 guest in user mode (problem state) a
111 privileged instructions and register
112
113 This is only available for hash MMU
114 guests that use hash MMU mode.
115
116 This is not as fast as using hypervi
117 machines where hypervisor mode is no
118 and can emulate processors that are
119 processor, including emulating 32-bi
120 host.
121
122 Selecting this option will cause the
123 disabled when the kernel is booted o
124 hash MMU mode (regardless of PR VMs
125 are running, "AIL" mode is disabled
126 and system calls on the host.
127
128 config KVM_BOOK3S_HV_EXIT_TIMING
129 bool
130
131 config KVM_BOOK3S_HV_P9_TIMING
132 bool "Detailed timing for the P9 entry
133 select KVM_BOOK3S_HV_EXIT_TIMING
134 depends on KVM_BOOK3S_HV_POSSIBLE && D
135 help
136 Calculate time taken for each vcpu d
137 exit, time spent inside the guest an
138 hypercalls and page faults. The tota
139 times in nanoseconds together with t
140 are reported in debugfs in kvm/vm#/v
141
142 If unsure, say N.
143
144 config KVM_BOOK3S_HV_P8_TIMING
145 bool "Detailed timing for hypervisor r
146 select KVM_BOOK3S_HV_EXIT_TIMING
147 depends on KVM_BOOK3S_HV_POSSIBLE && D
148 help
149 Calculate time taken for each vcpu i
150 exit, and interrupt handling code, p
151 and in nap mode due to idle (cede) w
152 in the guest. The total, minimum an
153 together with the number of executio
154 kvm/vm#/vcpu#/timings. The overhead
155 ns per exit on POWER8.
156
157 If unsure, say N.
158
159 config KVM_BOOK3S_HV_NESTED_PMU_WORKAROUND
160 bool "Nested L0 host workaround for L1
161 depends on KVM_BOOK3S_HV_POSSIBLE
162 default !EXPERT
163 help
164 Old nested HV capable Linux guests h
165 reflect the PMU in-use status of the
166 while the L2 PMU registers are live.
167 of L2 PMU register state, causing pe
168 L2 guests.
169
170 Selecting this option for the L0 hos
171 those buggy L1s which saves the L2 s
172 in all nested-capable guest entry/ex
173
174 config KVM_BOOKE_HV
175 bool
176
177 config KVM_EXIT_TIMING
178 bool "Detailed exit timing"
179 depends on KVM_E500V2 || KVM_E500MC
180 help
181 Calculate elapsed time for every exi
182 report is available in debugfs kvm/v
183 The overhead is relatively small, ho
184 production environments.
185
186 If unsure, say N.
187
188 config KVM_E500V2
189 bool "KVM support for PowerPC E500v2 p
190 depends on PPC_E500 && !PPC_E500MC
191 depends on !CONTEXT_TRACKING_USER
192 select KVM
193 select KVM_MMIO
194 select KVM_GENERIC_MMU_NOTIFIER
195 help
196 Support running unmodified E500 gues
197 E500v2 host processors.
198
199 This module provides access to the h
200 a character device node named /dev/k
201
202 If unsure, say N.
203
204 config KVM_E500MC
205 bool "KVM support for PowerPC E500MC/E
206 depends on PPC_E500MC
207 depends on !CONTEXT_TRACKING_USER
208 select KVM
209 select KVM_MMIO
210 select KVM_BOOKE_HV
211 select KVM_GENERIC_MMU_NOTIFIER
212 help
213 Support running unmodified E500MC/E5
214 virtual machines on E500MC/E5500/E65
215
216 This module provides access to the h
217 a character device node named /dev/k
218
219 If unsure, say N.
220
221 config KVM_MPIC
222 bool "KVM in-kernel MPIC emulation"
223 depends on KVM && PPC_E500
224 select HAVE_KVM_IRQCHIP
225 select HAVE_KVM_IRQ_ROUTING
226 select HAVE_KVM_MSI
227 help
228 Enable support for emulating MPIC de
229 host kernel, rather than relying on
230 Currently, support is limited to cer
231 Freescale's MPIC implementation.
232
233 config KVM_XICS
234 bool "KVM in-kernel XICS emulation"
235 depends on KVM_BOOK3S_64 && !KVM_MPIC
236 select HAVE_KVM_IRQCHIP
237 default y
238 help
239 Include support for the XICS (eXtern
240 Specification) interrupt controller
241 IBM POWER (pSeries) servers.
242
243 config KVM_XIVE
244 bool
245 default y
246 depends on KVM_XICS && PPC_XIVE_NATIVE
247
248 endif # VIRTUALIZATION
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