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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         ---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 
 25 config KVM_BOOK3S_HANDLER
 26         bool
 27 
 28 config KVM_BOOK3S_32_HANDLER
 29         bool
 30         select KVM_BOOK3S_HANDLER
 31         select KVM_MMIO
 32 
 33 config KVM_BOOK3S_64_HANDLER
 34         bool
 35         select KVM_BOOK3S_HANDLER
 36 
 37 config KVM_BOOK3S_PR_POSSIBLE
 38         bool
 39         select KVM_MMIO
 40         select MMU_NOTIFIER
 41 
 42 config KVM_BOOK3S_HV_POSSIBLE
 43         bool
 44 
 45 config KVM_BOOK3S_32
 46         tristate "KVM support for PowerPC book3s_32 processors"
 47         depends on PPC_BOOK3S_32 && !SMP && !PTE_64BIT
 48         select KVM
 49         select KVM_BOOK3S_32_HANDLER
 50         select KVM_BOOK3S_PR_POSSIBLE
 51         ---help---
 52           Support running unmodified book3s_32 guest kernels
 53           in virtual machines on book3s_32 host processors.
 54 
 55           This module provides access to the hardware capabilities through
 56           a character device node named /dev/kvm.
 57 
 58           If unsure, say N.
 59 
 60 config KVM_BOOK3S_64
 61         tristate "KVM support for PowerPC book3s_64 processors"
 62         depends on PPC_BOOK3S_64
 63         select KVM_BOOK3S_64_HANDLER
 64         select KVM
 65         select KVM_BOOK3S_PR_POSSIBLE if !KVM_BOOK3S_HV_POSSIBLE
 66         ---help---
 67           Support running unmodified book3s_64 and book3s_32 guest kernels
 68           in virtual machines on book3s_64 host processors.
 69 
 70           This module provides access to the hardware capabilities through
 71           a character device node named /dev/kvm.
 72 
 73           If unsure, say N.
 74 
 75 config KVM_BOOK3S_64_HV
 76         tristate "KVM support for POWER7 and PPC970 using hypervisor mode in host"
 77         depends on KVM_BOOK3S_64
 78         select KVM_BOOK3S_HV_POSSIBLE
 79         select MMU_NOTIFIER
 80         select CMA
 81         ---help---
 82           Support running unmodified book3s_64 guest kernels in
 83           virtual machines on POWER7 and PPC970 processors that have
 84           hypervisor mode available to the host.
 85 
 86           If you say Y here, KVM will use the hardware virtualization
 87           facilities of POWER7 (and later) processors, meaning that
 88           guest operating systems will run at full hardware speed
 89           using supervisor and user modes.  However, this also means
 90           that KVM is not usable under PowerVM (pHyp), is only usable
 91           on POWER7 (or later) processors and PPC970-family processors,
 92           and cannot emulate a different processor from the host processor.
 93 
 94           If unsure, say N.
 95 
 96 config KVM_BOOK3S_64_PR
 97         tristate "KVM support without using hypervisor mode in host"
 98         depends on KVM_BOOK3S_64
 99         select KVM_BOOK3S_PR_POSSIBLE
100         ---help---
101           Support running guest kernels in virtual machines on processors
102           without using hypervisor mode in the host, by running the
103           guest in user mode (problem state) and emulating all
104           privileged instructions and registers.
105 
106           This is not as fast as using hypervisor mode, but works on
107           machines where hypervisor mode is not available or not usable,
108           and can emulate processors that are different from the host
109           processor, including emulating 32-bit processors on a 64-bit
110           host.
111 
112 config KVM_BOOKE_HV
113         bool
114 
115 config KVM_EXIT_TIMING
116         bool "Detailed exit timing"
117         depends on KVM_E500V2 || KVM_E500MC
118         ---help---
119           Calculate elapsed time for every exit/enter cycle. A per-vcpu
120           report is available in debugfs kvm/vm#_vcpu#_timing.
121           The overhead is relatively small, however it is not recommended for
122           production environments.
123 
124           If unsure, say N.
125 
126 config KVM_E500V2
127         bool "KVM support for PowerPC E500v2 processors"
128         depends on E500 && !PPC_E500MC
129         select KVM
130         select KVM_MMIO
131         select MMU_NOTIFIER
132         ---help---
133           Support running unmodified E500 guest kernels in virtual machines on
134           E500v2 host processors.
135 
136           This module provides access to the hardware capabilities through
137           a character device node named /dev/kvm.
138 
139           If unsure, say N.
140 
141 config KVM_E500MC
142         bool "KVM support for PowerPC E500MC/E5500/E6500 processors"
143         depends on PPC_E500MC
144         select KVM
145         select KVM_MMIO
146         select KVM_BOOKE_HV
147         select MMU_NOTIFIER
148         ---help---
149           Support running unmodified E500MC/E5500/E6500 guest kernels in
150           virtual machines on E500MC/E5500/E6500 host processors.
151 
152           This module provides access to the hardware capabilities through
153           a character device node named /dev/kvm.
154 
155           If unsure, say N.
156 
157 config KVM_MPIC
158         bool "KVM in-kernel MPIC emulation"
159         depends on KVM && E500
160         select HAVE_KVM_IRQCHIP
161         select HAVE_KVM_IRQFD
162         select HAVE_KVM_IRQ_ROUTING
163         select HAVE_KVM_MSI
164         help
165           Enable support for emulating MPIC devices inside the
166           host kernel, rather than relying on userspace to emulate.
167           Currently, support is limited to certain versions of
168           Freescale's MPIC implementation.
169 
170 config KVM_XICS
171         bool "KVM in-kernel XICS emulation"
172         depends on KVM_BOOK3S_64 && !KVM_MPIC
173         select HAVE_KVM_IRQCHIP
174         select HAVE_KVM_IRQFD
175         ---help---
176           Include support for the XICS (eXternal Interrupt Controller
177           Specification) interrupt controller architecture used on
178           IBM POWER (pSeries) servers.
179 
180 source drivers/vhost/Kconfig
181 
182 endif # VIRTUALIZATION

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