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         select KVM_VFIO
  26         select IRQ_BYPASS_MANAGER
  27         select HAVE_KVM_IRQ_BYPASS
  28
  29 config KVM_BOOK3S_HANDLER
  30         bool
  31
  32 config KVM_BOOK3S_32_HANDLER
  33         bool
  34         select KVM_BOOK3S_HANDLER
  35         select KVM_MMIO
  36
  37 config KVM_BOOK3S_64_HANDLER
  38         bool
  39         select KVM_BOOK3S_HANDLER
  40
  41 config KVM_BOOK3S_PR_POSSIBLE
  42         bool
  43         select KVM_MMIO
  44         select MMU_NOTIFIER
  45
  46 config KVM_BOOK3S_HV_POSSIBLE
  47         bool
  48
  49 config KVM_BOOK3S_32
  50         tristate "KVM support for PowerPC book3s_32 processors"
  51         depends on PPC_BOOK3S_32 && !SMP && !PTE_64BIT
  52         select KVM
  53         select KVM_BOOK3S_32_HANDLER
  54         select KVM_BOOK3S_PR_POSSIBLE
  55         ---help---
  56           Support running unmodified book3s_32 guest kernels
  57           in virtual machines on book3s_32 host processors.
  58
  59           This module provides access to the hardware capabilities through
  60           a character device node named /dev/kvm.
  61
  62           If unsure, say N.
  63
  64 config KVM_BOOK3S_64
  65         tristate "KVM support for PowerPC book3s_64 processors"
  66         depends on PPC_BOOK3S_64
  67         select KVM_BOOK3S_64_HANDLER
  68         select KVM
  69         select KVM_BOOK3S_PR_POSSIBLE if !KVM_BOOK3S_HV_POSSIBLE
  70         select SPAPR_TCE_IOMMU if IOMMU_SUPPORT
  71         ---help---
  72           Support running unmodified book3s_64 and book3s_32 guest kernels
  73           in virtual machines on book3s_64 host processors.
  74
  75           This module provides access to the hardware capabilities through
  76           a character device node named /dev/kvm.
  77
  78           If unsure, say N.
  79
  80 config KVM_BOOK3S_64_HV
  81         tristate "KVM for POWER7 and later using hypervisor mode in host"
  82         depends on KVM_BOOK3S_64 && PPC_POWERNV
  83         select KVM_BOOK3S_HV_POSSIBLE
  84         select MMU_NOTIFIER
  85         select CMA
  86         ---help---
  87           Support running unmodified book3s_64 guest kernels in
  88           virtual machines on POWER7 and newer processors that have
  89           hypervisor mode available to the host.
  90
  91           If you say Y here, KVM will use the hardware virtualization
  92           facilities of POWER7 (and later) processors, meaning that
  93           guest operating systems will run at full hardware speed
  94           using supervisor and user modes.  However, this also means
  95           that KVM is not usable under PowerVM (pHyp), is only usable
  96           on POWER7 or later processors, and cannot emulate a
  97           different processor from the host processor.
  98
  99           If unsure, say N.
 100
 101 config KVM_BOOK3S_64_PR
 102         tristate "KVM support without using hypervisor mode in host"
 103         depends on KVM_BOOK3S_64
 104         select KVM_BOOK3S_PR_POSSIBLE
 105         ---help---
 106           Support running guest kernels in virtual machines on processors
 107           without using hypervisor mode in the host, by running the
 108           guest in user mode (problem state) and emulating all
 109           privileged instructions and registers.
 110
 111           This is not as fast as using hypervisor mode, but works on
 112           machines where hypervisor mode is not available or not usable,
 113           and can emulate processors that are different from the host
 114           processor, including emulating 32-bit processors on a 64-bit
 115           host.
 116
 117 config KVM_BOOK3S_HV_EXIT_TIMING
 118         bool "Detailed timing for hypervisor real-mode code"
 119         depends on KVM_BOOK3S_HV_POSSIBLE && DEBUG_FS
 120         ---help---
 121           Calculate time taken for each vcpu in the real-mode guest entry,
 122           exit, and interrupt handling code, plus time spent in the guest
 123           and in nap mode due to idle (cede) while other threads are still
 124           in the guest.  The total, minimum and maximum times in nanoseconds
 125           together with the number of executions are reported in debugfs in
 126           kvm/vm#/vcpu#/timings.  The overhead is of the order of 30 - 40
 127           ns per exit on POWER8.
 128
 129           If unsure, say N.
 130
 131 config KVM_BOOKE_HV
 132         bool
 133
 134 config KVM_EXIT_TIMING
 135         bool "Detailed exit timing"
 136         depends on KVM_E500V2 || KVM_E500MC
 137         ---help---
 138           Calculate elapsed time for every exit/enter cycle. A per-vcpu
 139           report is available in debugfs kvm/vm#_vcpu#_timing.
 140           The overhead is relatively small, however it is not recommended for
 141           production environments.
 142
 143           If unsure, say N.
 144
 145 config KVM_E500V2
 146         bool "KVM support for PowerPC E500v2 processors"
 147         depends on E500 && !PPC_E500MC
 148         select KVM
 149         select KVM_MMIO
 150         select MMU_NOTIFIER
 151         ---help---
 152           Support running unmodified E500 guest kernels in virtual machines on
 153           E500v2 host processors.
 154
 155           This module provides access to the hardware capabilities through
 156           a character device node named /dev/kvm.
 157
 158           If unsure, say N.
 159
 160 config KVM_E500MC
 161         bool "KVM support for PowerPC E500MC/E5500/E6500 processors"
 162         depends on PPC_E500MC
 163         select KVM
 164         select KVM_MMIO
 165         select KVM_BOOKE_HV
 166         select MMU_NOTIFIER
 167         ---help---
 168           Support running unmodified E500MC/E5500/E6500 guest kernels in
 169           virtual machines on E500MC/E5500/E6500 host processors.
 170
 171           This module provides access to the hardware capabilities through
 172           a character device node named /dev/kvm.
 173
 174           If unsure, say N.
 175
 176 config KVM_MPIC
 177         bool "KVM in-kernel MPIC emulation"
 178         depends on KVM && E500
 179         select HAVE_KVM_IRQCHIP
 180         select HAVE_KVM_IRQFD
 181         select HAVE_KVM_IRQ_ROUTING
 182         select HAVE_KVM_MSI
 183         help
 184           Enable support for emulating MPIC devices inside the
 185           host kernel, rather than relying on userspace to emulate.
 186           Currently, support is limited to certain versions of
 187           Freescale's MPIC implementation.
 188
 189 config KVM_XICS
 190         bool "KVM in-kernel XICS emulation"
 191         depends on KVM_BOOK3S_64 && !KVM_MPIC
 192         select HAVE_KVM_IRQCHIP
 193         select HAVE_KVM_IRQFD
 194         default y
 195         ---help---
 196           Include support for the XICS (eXternal Interrupt Controller
 197           Specification) interrupt controller architecture used on
 198           IBM POWER (pSeries) servers.
 199
 200 config KVM_XIVE
 201         bool
 202         default y
 203         depends on KVM_XICS && PPC_XIVE_NATIVE && KVM_BOOK3S_HV_POSSIBLE
 204
 205 source drivers/vhost/Kconfig
 206
 207 endif # VIRTUALIZATION