|  | # | 
|  | # KVM configuration | 
|  | # | 
|  |  | 
|  | source "virt/kvm/Kconfig" | 
|  |  | 
|  | menuconfig VIRTUALIZATION | 
|  | bool "Virtualization" | 
|  | ---help--- | 
|  | Say Y here to get to see options for using your Linux host to run | 
|  | other operating systems inside virtual machines (guests). | 
|  | This option alone does not add any kernel code. | 
|  |  | 
|  | If you say N, all options in this submenu will be skipped and | 
|  | disabled. | 
|  |  | 
|  | if VIRTUALIZATION | 
|  |  | 
|  | config KVM | 
|  | bool | 
|  | select PREEMPT_NOTIFIERS | 
|  | select ANON_INODES | 
|  | select HAVE_KVM_EVENTFD | 
|  |  | 
|  | config KVM_BOOK3S_HANDLER | 
|  | bool | 
|  |  | 
|  | config KVM_BOOK3S_32_HANDLER | 
|  | bool | 
|  | select KVM_BOOK3S_HANDLER | 
|  | select KVM_MMIO | 
|  |  | 
|  | config KVM_BOOK3S_64_HANDLER | 
|  | bool | 
|  | select KVM_BOOK3S_HANDLER | 
|  |  | 
|  | config KVM_BOOK3S_PR | 
|  | bool | 
|  | select KVM_MMIO | 
|  | select MMU_NOTIFIER | 
|  |  | 
|  | config KVM_BOOK3S_32 | 
|  | tristate "KVM support for PowerPC book3s_32 processors" | 
|  | depends on PPC_BOOK3S_32 && !SMP && !PTE_64BIT | 
|  | select KVM | 
|  | select KVM_BOOK3S_32_HANDLER | 
|  | select KVM_BOOK3S_PR | 
|  | ---help--- | 
|  | Support running unmodified book3s_32 guest kernels | 
|  | in virtual machines on book3s_32 host processors. | 
|  |  | 
|  | This module provides access to the hardware capabilities through | 
|  | a character device node named /dev/kvm. | 
|  |  | 
|  | If unsure, say N. | 
|  |  | 
|  | config KVM_BOOK3S_64 | 
|  | tristate "KVM support for PowerPC book3s_64 processors" | 
|  | depends on PPC_BOOK3S_64 | 
|  | select KVM_BOOK3S_64_HANDLER | 
|  | select KVM | 
|  | ---help--- | 
|  | Support running unmodified book3s_64 and book3s_32 guest kernels | 
|  | in virtual machines on book3s_64 host processors. | 
|  |  | 
|  | This module provides access to the hardware capabilities through | 
|  | a character device node named /dev/kvm. | 
|  |  | 
|  | If unsure, say N. | 
|  |  | 
|  | config KVM_BOOK3S_64_HV | 
|  | bool "KVM support for POWER7 and PPC970 using hypervisor mode in host" | 
|  | depends on KVM_BOOK3S_64 | 
|  | select MMU_NOTIFIER | 
|  | ---help--- | 
|  | Support running unmodified book3s_64 guest kernels in | 
|  | virtual machines on POWER7 and PPC970 processors that have | 
|  | hypervisor mode available to the host. | 
|  |  | 
|  | If you say Y here, KVM will use the hardware virtualization | 
|  | facilities of POWER7 (and later) processors, meaning that | 
|  | guest operating systems will run at full hardware speed | 
|  | using supervisor and user modes.  However, this also means | 
|  | that KVM is not usable under PowerVM (pHyp), is only usable | 
|  | on POWER7 (or later) processors and PPC970-family processors, | 
|  | and cannot emulate a different processor from the host processor. | 
|  |  | 
|  | If unsure, say N. | 
|  |  | 
|  | config KVM_BOOK3S_64_PR | 
|  | def_bool y | 
|  | depends on KVM_BOOK3S_64 && !KVM_BOOK3S_64_HV | 
|  | select KVM_BOOK3S_PR | 
|  |  | 
|  | config KVM_BOOKE_HV | 
|  | bool | 
|  |  | 
|  | config KVM_440 | 
|  | bool "KVM support for PowerPC 440 processors" | 
|  | depends on 44x | 
|  | select KVM | 
|  | select KVM_MMIO | 
|  | ---help--- | 
|  | Support running unmodified 440 guest kernels in virtual machines on | 
|  | 440 host processors. | 
|  |  | 
|  | This module provides access to the hardware capabilities through | 
|  | a character device node named /dev/kvm. | 
|  |  | 
|  | If unsure, say N. | 
|  |  | 
|  | config KVM_EXIT_TIMING | 
|  | bool "Detailed exit timing" | 
|  | depends on KVM_440 || KVM_E500V2 || KVM_E500MC | 
|  | ---help--- | 
|  | Calculate elapsed time for every exit/enter cycle. A per-vcpu | 
|  | report is available in debugfs kvm/vm#_vcpu#_timing. | 
|  | The overhead is relatively small, however it is not recommended for | 
|  | production environments. | 
|  |  | 
|  | If unsure, say N. | 
|  |  | 
|  | config KVM_E500V2 | 
|  | bool "KVM support for PowerPC E500v2 processors" | 
|  | depends on E500 && !PPC_E500MC | 
|  | select KVM | 
|  | select KVM_MMIO | 
|  | select MMU_NOTIFIER | 
|  | ---help--- | 
|  | Support running unmodified E500 guest kernels in virtual machines on | 
|  | E500v2 host processors. | 
|  |  | 
|  | This module provides access to the hardware capabilities through | 
|  | a character device node named /dev/kvm. | 
|  |  | 
|  | If unsure, say N. | 
|  |  | 
|  | config KVM_E500MC | 
|  | bool "KVM support for PowerPC E500MC/E5500/E6500 processors" | 
|  | depends on PPC_E500MC | 
|  | select KVM | 
|  | select KVM_MMIO | 
|  | select KVM_BOOKE_HV | 
|  | select MMU_NOTIFIER | 
|  | ---help--- | 
|  | Support running unmodified E500MC/E5500/E6500 guest kernels in | 
|  | virtual machines on E500MC/E5500/E6500 host processors. | 
|  |  | 
|  | This module provides access to the hardware capabilities through | 
|  | a character device node named /dev/kvm. | 
|  |  | 
|  | If unsure, say N. | 
|  |  | 
|  | config KVM_MPIC | 
|  | bool "KVM in-kernel MPIC emulation" | 
|  | depends on KVM && E500 | 
|  | select HAVE_KVM_IRQCHIP | 
|  | select HAVE_KVM_IRQ_ROUTING | 
|  | select HAVE_KVM_MSI | 
|  | help | 
|  | Enable support for emulating MPIC devices inside the | 
|  | host kernel, rather than relying on userspace to emulate. | 
|  | Currently, support is limited to certain versions of | 
|  | Freescale's MPIC implementation. | 
|  |  | 
|  | config KVM_XICS | 
|  | bool "KVM in-kernel XICS emulation" | 
|  | depends on KVM_BOOK3S_64 && !KVM_MPIC | 
|  | ---help--- | 
|  | Include support for the XICS (eXternal Interrupt Controller | 
|  | Specification) interrupt controller architecture used on | 
|  | IBM POWER (pSeries) servers. | 
|  |  | 
|  | source drivers/vhost/Kconfig | 
|  |  | 
|  | endif # VIRTUALIZATION |