linux/virt/kvm/Kconfig

# KVM common configuration items and defaults

config HAVE_KVM
       bool

config HAVE_KVM_IRQCHIP
       bool

config HAVE_KVM_EVENTFD
       bool
       select EVENTFD

config KVM_APIC_ARCHITECTURE
       bool

config KVM_MMIO
       bool

config KVM_ASYNC_PF
       bool

config HAVE_KVM_MSI
       bool

config HAVE_KVM_CPU_RELAX_INTERCEPT
       bool
KVM: Move common KVM Kconfig items to new file virt/kvm/Kconfig Reduce Kconfig code duplication. Signed-off-by: Avi Kivity <avi@redhat.com> 2009-05-21 13:45:19 +00:00			`# KVM common configuration items and defaults`

			`config HAVE_KVM`
			`bool`

			`config HAVE_KVM_IRQCHIP`
			`bool`
KVM: irqfd KVM provides a complete virtual system environment for guests, including support for injecting interrupts modeled after the real exception/interrupt facilities present on the native platform (such as the IDT on x86). Virtual interrupts can come from a variety of sources (emulated devices, pass-through devices, etc) but all must be injected to the guest via the KVM infrastructure. This patch adds a new mechanism to inject a specific interrupt to a guest using a decoupled eventfd mechnanism: Any legal signal on the irqfd (using eventfd semantics from either userspace or kernel) will translate into an injected interrupt in the guest at the next available interrupt window. Signed-off-by: Gregory Haskins <ghaskins@novell.com> Signed-off-by: Avi Kivity <avi@redhat.com> 2009-05-20 14:30:49 +00:00
			`config HAVE_KVM_EVENTFD`
			`bool`
			`select EVENTFD`
KVM: Break dependency between vcpu index in vcpus array and vcpu_id. Archs are free to use vcpu_id as they see fit. For x86 it is used as vcpu's apic id. New ioctl is added to configure boot vcpu id that was assumed to be 0 till now. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com> 2009-06-09 12:56:28 +00:00
			`config KVM_APIC_ARCHITECTURE`
			`bool`
KVM: Add KVM_MMIO kconfig item s390 doesn't have mmio, this will simplify ifdefing it out. Signed-off-by: Avi Kivity <avi@redhat.com> 2009-12-20 13:00:10 +00:00
			`config KVM_MMIO`
			`bool`
KVM: Halt vcpu if page it tries to access is swapped out If a guest accesses swapped out memory do not swap it in from vcpu thread context. Schedule work to do swapping and put vcpu into halted state instead. Interrupts will still be delivered to the guest and if interrupt will cause reschedule guest will continue to run another task. [avi: remove call to get_user_pages_noio(), nacked by Linus; this makes everything synchrnous again] Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> 2010-10-14 09:22:46 +00:00
			`config KVM_ASYNC_PF`
			`bool`
KVM: Introduce direct MSI message injection for in-kernel irqchips Currently, MSI messages can only be injected to in-kernel irqchips by defining a corresponding IRQ route for each message. This is not only unhandy if the MSI messages are generated "on the fly" by user space, IRQ routes are a limited resource that user space has to manage carefully. By providing a direct injection path, we can both avoid using up limited resources and simplify the necessary steps for user land. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com> 2012-03-29 19:14:12 +00:00
			`config HAVE_KVM_MSI`
			`bool`
KVM: Add config to support ple or cpu relax optimzation Suggested-by: Avi Kivity <avi@redhat.com> Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Reviewed-by: Rik van Riel <riel@redhat.com> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> # on s390x Signed-off-by: Avi Kivity <avi@redhat.com> 2012-07-18 13:37:32 +00:00
			`config HAVE_KVM_CPU_RELAX_INTERCEPT`
			`bool`