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557abc40d1
The new created_vcpus field makes it possible to avoid the race between irqchip and VCPU creation in a much nicer way; just check under kvm->lock whether a VCPU has already been created. We can then remove KVM_APIC_ARCHITECTURE too, because at this point the symbol is only governing the default definition of kvm_vcpu_compatible. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
107 lines
2.9 KiB
Plaintext
107 lines
2.9 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 HAVE_KVM || X86
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default y
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---help---
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Say Y here to get to see options for using your Linux host to run other
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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 disabled.
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if VIRTUALIZATION
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config KVM
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tristate "Kernel-based Virtual Machine (KVM) support"
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depends on HAVE_KVM
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depends on HIGH_RES_TIMERS
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# for TASKSTATS/TASK_DELAY_ACCT:
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depends on NET
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select PREEMPT_NOTIFIERS
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select MMU_NOTIFIER
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select ANON_INODES
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select HAVE_KVM_IRQCHIP
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select HAVE_KVM_IRQFD
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select IRQ_BYPASS_MANAGER
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select HAVE_KVM_IRQ_BYPASS
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select HAVE_KVM_IRQ_ROUTING
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select HAVE_KVM_EVENTFD
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select KVM_ASYNC_PF
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select USER_RETURN_NOTIFIER
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select KVM_MMIO
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select TASKSTATS
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select TASK_DELAY_ACCT
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select PERF_EVENTS
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select HAVE_KVM_MSI
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select HAVE_KVM_CPU_RELAX_INTERCEPT
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select KVM_GENERIC_DIRTYLOG_READ_PROTECT
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select KVM_VFIO
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select SRCU
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---help---
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Support hosting fully virtualized guest machines using hardware
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virtualization extensions. You will need a fairly recent
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processor equipped with virtualization extensions. You will also
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need to select one or more of the processor modules below.
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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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To compile this as a module, choose M here: the module
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will be called kvm.
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If unsure, say N.
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config KVM_INTEL
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tristate "KVM for Intel processors support"
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depends on KVM
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# for perf_guest_get_msrs():
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depends on CPU_SUP_INTEL
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---help---
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Provides support for KVM on Intel processors equipped with the VT
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extensions.
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To compile this as a module, choose M here: the module
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will be called kvm-intel.
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config KVM_AMD
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tristate "KVM for AMD processors support"
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depends on KVM
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---help---
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Provides support for KVM on AMD processors equipped with the AMD-V
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(SVM) extensions.
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To compile this as a module, choose M here: the module
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will be called kvm-amd.
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config KVM_MMU_AUDIT
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bool "Audit KVM MMU"
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depends on KVM && TRACEPOINTS
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---help---
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This option adds a R/W kVM module parameter 'mmu_audit', which allows
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auditing of KVM MMU events at runtime.
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config KVM_DEVICE_ASSIGNMENT
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bool "KVM legacy PCI device assignment support (DEPRECATED)"
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depends on KVM && PCI && IOMMU_API
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default n
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---help---
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Provide support for legacy PCI device assignment through KVM. The
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kernel now also supports a full featured userspace device driver
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framework through VFIO, which supersedes this support and provides
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better security.
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If unsure, say N.
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# OK, it's a little counter-intuitive to do this, but it puts it neatly under
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# the virtualization menu.
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source drivers/vhost/Kconfig
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source drivers/lguest/Kconfig
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endif # VIRTUALIZATION
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