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![Alexander Graf](/assets/img/avatar_default.png)
With the previous patches applied, we can now successfully use PR KVM on little endian hosts which means we can now allow users to select it. However, HV KVM still needs some work, so let's keep the kconfig conflict on that one. Signed-off-by: Alexander Graf <agraf@suse.de>
194 lines
5.3 KiB
Text
194 lines
5.3 KiB
Text
#
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# KVM configuration
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#
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source "virt/kvm/Kconfig"
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menuconfig VIRTUALIZATION
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bool "Virtualization"
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---help---
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Say Y here to get to see options for using your Linux host to run
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other operating systems inside virtual machines (guests).
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This option alone does not add any kernel code.
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If you say N, all options in this submenu will be skipped and
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disabled.
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if VIRTUALIZATION
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config KVM
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bool
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select PREEMPT_NOTIFIERS
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select ANON_INODES
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select HAVE_KVM_EVENTFD
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config KVM_BOOK3S_HANDLER
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bool
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config KVM_BOOK3S_32_HANDLER
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bool
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select KVM_BOOK3S_HANDLER
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select KVM_MMIO
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config KVM_BOOK3S_64_HANDLER
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bool
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select KVM_BOOK3S_HANDLER
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config KVM_BOOK3S_PR_POSSIBLE
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bool
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select KVM_MMIO
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select MMU_NOTIFIER
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config KVM_BOOK3S_HV_POSSIBLE
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bool
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config KVM_BOOK3S_32
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tristate "KVM support for PowerPC book3s_32 processors"
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depends on PPC_BOOK3S_32 && !SMP && !PTE_64BIT
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select KVM
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select KVM_BOOK3S_32_HANDLER
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select KVM_BOOK3S_PR_POSSIBLE
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---help---
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Support running unmodified book3s_32 guest kernels
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in virtual machines on book3s_32 host processors.
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This module provides access to the hardware capabilities through
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a character device node named /dev/kvm.
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If unsure, say N.
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config KVM_BOOK3S_64
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tristate "KVM support for PowerPC book3s_64 processors"
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depends on PPC_BOOK3S_64
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select KVM_BOOK3S_64_HANDLER
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select KVM
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select KVM_BOOK3S_PR_POSSIBLE if !KVM_BOOK3S_HV_POSSIBLE
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---help---
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Support running unmodified book3s_64 and book3s_32 guest kernels
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in virtual machines on book3s_64 host processors.
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This module provides access to the hardware capabilities through
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a character device node named /dev/kvm.
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If unsure, say N.
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config KVM_BOOK3S_64_HV
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tristate "KVM support for POWER7 and PPC970 using hypervisor mode in host"
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depends on KVM_BOOK3S_64
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depends on !CPU_LITTLE_ENDIAN
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select KVM_BOOK3S_HV_POSSIBLE
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select MMU_NOTIFIER
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select CMA
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---help---
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Support running unmodified book3s_64 guest kernels in
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virtual machines on POWER7 and PPC970 processors that have
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hypervisor mode available to the host.
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If you say Y here, KVM will use the hardware virtualization
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facilities of POWER7 (and later) processors, meaning that
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guest operating systems will run at full hardware speed
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using supervisor and user modes. However, this also means
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that KVM is not usable under PowerVM (pHyp), is only usable
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on POWER7 (or later) processors and PPC970-family processors,
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and cannot emulate a different processor from the host processor.
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If unsure, say N.
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config KVM_BOOK3S_64_PR
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tristate "KVM support without using hypervisor mode in host"
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depends on KVM_BOOK3S_64
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select KVM_BOOK3S_PR_POSSIBLE
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---help---
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Support running guest kernels in virtual machines on processors
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without using hypervisor mode in the host, by running the
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guest in user mode (problem state) and emulating all
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privileged instructions and registers.
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This is not as fast as using hypervisor mode, but works on
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machines where hypervisor mode is not available or not usable,
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and can emulate processors that are different from the host
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processor, including emulating 32-bit processors on a 64-bit
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host.
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config KVM_BOOKE_HV
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bool
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config KVM_440
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bool "KVM support for PowerPC 440 processors"
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depends on 44x
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select KVM
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select KVM_MMIO
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---help---
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Support running unmodified 440 guest kernels in virtual machines on
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440 host processors.
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This module provides access to the hardware capabilities through
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a character device node named /dev/kvm.
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If unsure, say N.
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config KVM_EXIT_TIMING
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bool "Detailed exit timing"
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depends on KVM_440 || KVM_E500V2 || KVM_E500MC
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---help---
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Calculate elapsed time for every exit/enter cycle. A per-vcpu
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report is available in debugfs kvm/vm#_vcpu#_timing.
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The overhead is relatively small, however it is not recommended for
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production environments.
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If unsure, say N.
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config KVM_E500V2
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bool "KVM support for PowerPC E500v2 processors"
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depends on E500 && !PPC_E500MC
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select KVM
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select KVM_MMIO
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select MMU_NOTIFIER
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---help---
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Support running unmodified E500 guest kernels in virtual machines on
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E500v2 host processors.
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This module provides access to the hardware capabilities through
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a character device node named /dev/kvm.
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If unsure, say N.
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config KVM_E500MC
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bool "KVM support for PowerPC E500MC/E5500/E6500 processors"
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depends on PPC_E500MC
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select KVM
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select KVM_MMIO
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select KVM_BOOKE_HV
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select MMU_NOTIFIER
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---help---
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Support running unmodified E500MC/E5500/E6500 guest kernels in
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virtual machines on E500MC/E5500/E6500 host processors.
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This module provides access to the hardware capabilities through
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a character device node named /dev/kvm.
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If unsure, say N.
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config KVM_MPIC
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bool "KVM in-kernel MPIC emulation"
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depends on KVM && E500
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select HAVE_KVM_IRQCHIP
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select HAVE_KVM_IRQ_ROUTING
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select HAVE_KVM_MSI
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help
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Enable support for emulating MPIC devices inside the
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host kernel, rather than relying on userspace to emulate.
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Currently, support is limited to certain versions of
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Freescale's MPIC implementation.
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config KVM_XICS
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bool "KVM in-kernel XICS emulation"
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depends on KVM_BOOK3S_64 && !KVM_MPIC
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---help---
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Include support for the XICS (eXternal Interrupt Controller
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Specification) interrupt controller architecture used on
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IBM POWER (pSeries) servers.
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source drivers/vhost/Kconfig
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endif # VIRTUALIZATION
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