linux.git/virt/kvm/Kconfig, branch v3.12

KVM: Introduce CONFIG_HAVE_KVM_IRQ_ROUTING

2013-04-26T18:27:14+00:00

Quite a bit of code in KVM has been conditionalized on availability of
IOAPIC emulation. However, most of it is generically applicable to
platforms that don't have an IOPIC, but a different type of irq chip.

Make code that only relies on IRQ routing, not an APIC itself, on
CONFIG_HAVE_KVM_IRQ_ROUTING, so that we can reuse it later.

Signed-off-by: Alexander Graf 
Acked-by: Michael S. Tsirkin

KVM: Add config to support ple or cpu relax optimzation

2012-07-23T10:00:53+00:00

Suggested-by: Avi Kivity 
Signed-off-by: Raghavendra K T 
Reviewed-by: Marcelo Tosatti 
Reviewed-by: Rik van Riel 
Tested-by: Christian Borntraeger  # on s390x
Signed-off-by: Avi Kivity

KVM: Introduce direct MSI message injection for in-kernel irqchips

2012-04-24T12:59:47+00:00

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 
Signed-off-by: Avi Kivity

KVM: Halt vcpu if page it tries to access is swapped out

2011-01-12T09:21:39+00:00

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 
Signed-off-by: Gleb Natapov 
Signed-off-by: Marcelo Tosatti

KVM: Add KVM_MMIO kconfig item

2010-03-01T15:35:41+00:00

s390 doesn't have mmio, this will simplify ifdefing it out.

Signed-off-by: Avi Kivity

KVM: Break dependency between vcpu index in vcpus array and vcpu_id.

2009-09-10T05:32:52+00:00

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 
Signed-off-by: Avi Kivity

KVM: irqfd

2009-09-10T05:32:41+00:00

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 
Signed-off-by: Avi Kivity

KVM: Move common KVM Kconfig items to new file virt/kvm/Kconfig

2009-09-10T05:32:41+00:00

Reduce Kconfig code duplication.

Signed-off-by: Avi Kivity