KVM: Don't reset mmu context unnecessarily when updating EFER

[mirror_ubuntu-artful-kernel.git] / arch / x86 / kvm / Kconfig

#
# KVM configuration
#

source "virt/kvm/Kconfig"

menuconfig VIRTUALIZATION
	bool "Virtualization"
	depends on HAVE_KVM || X86
	default y
	---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
	tristate "Kernel-based Virtual Machine (KVM) support"
	depends on HAVE_KVM
	# for device assignment:
	depends on PCI
	select PREEMPT_NOTIFIERS
	select MMU_NOTIFIER
	select ANON_INODES
	select HAVE_KVM_IRQCHIP
	select HAVE_KVM_EVENTFD
	select KVM_APIC_ARCHITECTURE
	select USER_RETURN_NOTIFIER
	select KVM_MMIO
	---help---
	  Support hosting fully virtualized guest machines using hardware
	  virtualization extensions.  You will need a fairly recent
	  processor equipped with virtualization extensions. You will also
	  need to select one or more of the processor modules below.

	  This module provides access to the hardware capabilities through
	  a character device node named /dev/kvm.

	  To compile this as a module, choose M here: the module
	  will be called kvm.

	  If unsure, say N.

config KVM_INTEL
	tristate "KVM for Intel processors support"
	depends on KVM
	---help---
	  Provides support for KVM on Intel processors equipped with the VT
	  extensions.

	  To compile this as a module, choose M here: the module
	  will be called kvm-intel.

config KVM_AMD
	tristate "KVM for AMD processors support"
	depends on KVM
	---help---
	  Provides support for KVM on AMD processors equipped with the AMD-V
	  (SVM) extensions.

	  To compile this as a module, choose M here: the module
	  will be called kvm-amd.

config KVM_MMU_AUDIT
	bool "Audit KVM MMU"
	depends on KVM && TRACEPOINTS
	---help---
	 This option adds a R/W kVM module parameter 'mmu_audit', which allows
	 audit  KVM MMU at runtime.

# OK, it's a little counter-intuitive to do this, but it puts it neatly under
# the virtualization menu.
source drivers/vhost/Kconfig
source drivers/lguest/Kconfig
source drivers/virtio/Kconfig

endif # VIRTUALIZATION