arch/powerpc/kvm/Kconfig

   1 #
   2 # KVM configuration
   3 #
   4
   5 source "virt/kvm/Kconfig"
   6
   7 menuconfig 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
  17 if VIRTUALIZATION
  18
  19 config KVM
  20         bool
  21         select PREEMPT_NOTIFIERS
  22         select ANON_INODES
  23         select HAVE_KVM_EVENTFD
  24         select SRCU
  25
  26 config KVM_BOOK3S_HANDLER
  27         bool
  28
  29 config KVM_BOOK3S_32_HANDLER
  30         bool
  31         select KVM_BOOK3S_HANDLER
  32         select KVM_MMIO
  33
  34 config KVM_BOOK3S_64_HANDLER
  35         bool
  36         select KVM_BOOK3S_HANDLER
  37
  38 config KVM_BOOK3S_PR_POSSIBLE
  39         bool
  40         select KVM_MMIO
  41         select MMU_NOTIFIER
  42
  43 config KVM_BOOK3S_HV_POSSIBLE
  44         bool
  45
  46 config KVM_BOOK3S_32
  47         tristate "KVM support for PowerPC book3s_32 processors"
  48         depends on PPC_BOOK3S_32 && !SMP && !PTE_64BIT
  49         select KVM
  50         select KVM_BOOK3S_32_HANDLER
  51         select KVM_BOOK3S_PR_POSSIBLE
  52         ---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
  61 config KVM_BOOK3S_64
  62         tristate "KVM support for PowerPC book3s_64 processors"
  63         depends on PPC_BOOK3S_64
  64         select KVM_BOOK3S_64_HANDLER
  65         select KVM
  66         select KVM_BOOK3S_PR_POSSIBLE if !KVM_BOOK3S_HV_POSSIBLE
  67         ---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
  76 config KVM_BOOK3S_64_HV
  77         tristate "KVM support for POWER7 and PPC970 using hypervisor mode in host"
  78         depends on KVM_BOOK3S_64
  79         select KVM_BOOK3S_HV_POSSIBLE
  80         select MMU_NOTIFIER
  81         select CMA
  82         ---help---
  83           Support running unmodified book3s_64 guest kernels in
  84           virtual machines on POWER7 and PPC970 processors that have
  85           hypervisor mode available to the host.
  86
  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
  92           on POWER7 (or later) processors and PPC970-family processors,
  93           and cannot emulate a different processor from the host processor.
  94
  95           If unsure, say N.
  96
  97 config KVM_BOOK3S_64_PR
  98         tristate "KVM support without using hypervisor mode in host"
  99         depends on KVM_BOOK3S_64
 100         select KVM_BOOK3S_PR_POSSIBLE
 101         ---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.
 112
 113 config KVM_BOOKE_HV
 114         bool
 115
 116 config KVM_EXIT_TIMING
 117         bool "Detailed exit timing"
 118         depends on KVM_E500V2 || KVM_E500MC
 119         ---help---
 120           Calculate elapsed time for every exit/enter cycle. A per-vcpu
 121           report is available in debugfs kvm/vm#_vcpu#_timing.
 122           The overhead is relatively small, however it is not recommended for
 123           production environments.
 124
 125           If unsure, say N.
 126
 127 config KVM_E500V2
 128         bool "KVM support for PowerPC E500v2 processors"
 129         depends on E500 && !PPC_E500MC
 130         select KVM
 131         select KVM_MMIO
 132         select MMU_NOTIFIER
 133         ---help---
 134           Support running unmodified E500 guest kernels in virtual machines on
 135           E500v2 host processors.
 136
 137           This module provides access to the hardware capabilities through
 138           a character device node named /dev/kvm.
 139
 140           If unsure, say N.
 141
 142 config KVM_E500MC
 143         bool "KVM support for PowerPC E500MC/E5500/E6500 processors"
 144         depends on PPC_E500MC
 145         select KVM
 146         select KVM_MMIO
 147         select KVM_BOOKE_HV
 148         select MMU_NOTIFIER
 149         ---help---
 150           Support running unmodified E500MC/E5500/E6500 guest kernels in
 151           virtual machines on E500MC/E5500/E6500 host processors.
 152
 153           This module provides access to the hardware capabilities through
 154           a character device node named /dev/kvm.
 155
 156           If unsure, say N.
 157
 158 config KVM_MPIC
 159         bool "KVM in-kernel MPIC emulation"
 160         depends on KVM && E500
 161         select HAVE_KVM_IRQCHIP
 162         select HAVE_KVM_IRQFD
 163         select HAVE_KVM_IRQ_ROUTING
 164         select HAVE_KVM_MSI
 165         help
 166           Enable support for emulating MPIC devices inside the
 167           host kernel, rather than relying on userspace to emulate.
 168           Currently, support is limited to certain versions of
 169           Freescale's MPIC implementation.
 170
 171 config KVM_XICS
 172         bool "KVM in-kernel XICS emulation"
 173         depends on KVM_BOOK3S_64 && !KVM_MPIC
 174         select HAVE_KVM_IRQCHIP
 175         select HAVE_KVM_IRQFD
 176         default y
 177         ---help---
 178           Include support for the XICS (eXternal Interrupt Controller
 179           Specification) interrupt controller architecture used on
 180           IBM POWER (pSeries) servers.
 181
 182 source drivers/vhost/Kconfig
 183
 184 endif # VIRTUALIZATION