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Linux/arch/powerpc/kvm/Kconfig

  1 #
  2 # KVM configuration
  3 #
  4 
  5 source "virt/kvm/Kconfig"
  6 
  7 menuconfig VIRTUALIZATION
  8         bool "Virtualization"
  9         depends on !CPU_LITTLE_ENDIAN
 10         ---help---
 11           Say Y here to get to see options for using your Linux host to run
 12           other operating systems inside virtual machines (guests).
 13           This option alone does not add any kernel code.
 14 
 15           If you say N, all options in this submenu will be skipped and
 16           disabled.
 17 
 18 if VIRTUALIZATION
 19 
 20 config KVM
 21         bool
 22         select PREEMPT_NOTIFIERS
 23         select ANON_INODES
 24         select HAVE_KVM_EVENTFD
 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_440
117         bool "KVM support for PowerPC 440 processors"
118         depends on 44x
119         select KVM
120         select KVM_MMIO
121         ---help---
122           Support running unmodified 440 guest kernels in virtual machines on
123           440 host processors.
124 
125           This module provides access to the hardware capabilities through
126           a character device node named /dev/kvm.
127 
128           If unsure, say N.
129 
130 config KVM_EXIT_TIMING
131         bool "Detailed exit timing"
132         depends on KVM_440 || KVM_E500V2 || KVM_E500MC
133         ---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 
141 config KVM_E500V2
142         bool "KVM support for PowerPC E500v2 processors"
143         depends on E500 && !PPC_E500MC
144         select KVM
145         select KVM_MMIO
146         select MMU_NOTIFIER
147         ---help---
148           Support running unmodified E500 guest kernels in virtual machines on
149           E500v2 host processors.
150 
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 
156 config KVM_E500MC
157         bool "KVM support for PowerPC E500MC/E5500/E6500 processors"
158         depends on PPC_E500MC
159         select KVM
160         select KVM_MMIO
161         select KVM_BOOKE_HV
162         select MMU_NOTIFIER
163         ---help---
164           Support running unmodified E500MC/E5500/E6500 guest kernels in
165           virtual machines on E500MC/E5500/E6500 host processors.
166 
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 
172 config KVM_MPIC
173         bool "KVM in-kernel MPIC emulation"
174         depends on KVM && E500
175         select HAVE_KVM_IRQCHIP
176         select HAVE_KVM_IRQ_ROUTING
177         select HAVE_KVM_MSI
178         help
179           Enable support for emulating MPIC devices inside the
180           host kernel, rather than relying on userspace to emulate.
181           Currently, support is limited to certain versions of
182           Freescale's MPIC implementation.
183 
184 config KVM_XICS
185         bool "KVM in-kernel XICS emulation"
186         depends on KVM_BOOK3S_64 && !KVM_MPIC
187         ---help---
188           Include support for the XICS (eXternal Interrupt Controller
189           Specification) interrupt controller architecture used on
190           IBM POWER (pSeries) servers.
191 
192 source drivers/vhost/Kconfig
193 
194 endif # VIRTUALIZATION

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