f080480488
side: the HV and emulation flavors can now coexist in a single kernel is probably the most interesting change from a user point of view. On the x86 side there are nested virtualization improvements and a few bugfixes. ARM got transparent huge page support, improved overcommit, and support for big endian guests. Finally, there is a new interface to connect KVM with VFIO. This helps with devices that use NoSnoop PCI transactions, letting the driver in the guest execute WBINVD instructions. This includes some nVidia cards on Windows, that fail to start without these patches and the corresponding userspace changes. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABAgAGBQJShPAhAAoJEBvWZb6bTYbyl48P/297GgmELHAGBgjvb6q7yyGu L8+eHjKbh4XBAkPwyzbvUjuww5z2hM0N3JQ0BDV9oeXlO+zwwCEns/sg2Q5/NJXq XxnTeShaKnp9lqVBnE6G9rAOUWKoyLJ2wItlvUL8JlaO9xJ0Vmk0ta4n2Nv5GqDp db6UD7vju6rHtIAhNpvvAO51kAOwc01xxRixCVb7KUYOnmO9nvpixzoI/S0Rp1gu w/OWMfCosDzBoT+cOe79Yx1OKcpaVW94X6CH1s+ShCw3wcbCL2f13Ka8/E3FIcuq vkZaLBxio7vjUAHRjPObw0XBW4InXEbhI1DjzIvm8dmc4VsgmtLQkTCG8fj+jINc dlHQUq6Do+1F4zy6WMBUj8tNeP1Z9DsABp98rQwR8+BwHoQpGQBpAxW0TE0ZMngC t1caqyvjZ5pPpFUxSrAV+8Kg4AvobXPYOim0vqV7Qea07KhFcBXLCfF7BWdwq/Jc 0CAOlsLL4mHGIQWZJuVGw0YGP7oATDCyewlBuDObx+szYCoV4fQGZVBEL0KwJx/1 7lrLN7JWzRyw6xTgJ5VVwgYE1tUY4IFQcHu7/5N+dw8/xg9KWA3f4PeMavIKSf+R qteewbtmQsxUnvuQIBHLs8NRWPnBPy+F3Sc2ckeOLIe4pmfTte6shtTXcLDL+LqH NTmT/cfmYp2BRkiCfCiS =rWNf -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull KVM changes from Paolo Bonzini: "Here are the 3.13 KVM changes. There was a lot of work on the PPC side: the HV and emulation flavors can now coexist in a single kernel is probably the most interesting change from a user point of view. On the x86 side there are nested virtualization improvements and a few bugfixes. ARM got transparent huge page support, improved overcommit, and support for big endian guests. Finally, there is a new interface to connect KVM with VFIO. This helps with devices that use NoSnoop PCI transactions, letting the driver in the guest execute WBINVD instructions. This includes some nVidia cards on Windows, that fail to start without these patches and the corresponding userspace changes" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (146 commits) kvm, vmx: Fix lazy FPU on nested guest arm/arm64: KVM: PSCI: propagate caller endianness to the incoming vcpu arm/arm64: KVM: MMIO support for BE guest kvm, cpuid: Fix sparse warning kvm: Delete prototype for non-existent function kvm_check_iopl kvm: Delete prototype for non-existent function complete_pio hung_task: add method to reset detector pvclock: detect watchdog reset at pvclock read kvm: optimize out smp_mb after srcu_read_unlock srcu: API for barrier after srcu read unlock KVM: remove vm mmap method KVM: IOMMU: hva align mapping page size KVM: x86: trace cpuid emulation when called from emulator KVM: emulator: cleanup decode_register_operand() a bit KVM: emulator: check rex prefix inside decode_register() KVM: x86: fix emulation of "movzbl %bpl, %eax" kvm_host: typo fix KVM: x86: emulate SAHF instruction MAINTAINERS: add tree for kvm.git Documentation/kvm: add a 00-INDEX file ...
195 lines
5.3 KiB
Plaintext
195 lines
5.3 KiB
Plaintext
#
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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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depends on !CPU_LITTLE_ENDIAN
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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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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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