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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