linux-toradex.git/include/uapi/linux/kvm.h, branch v4.6-rc6

Merge tag 'kvm-arm-for-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

2016-03-09T10:50:42+00:00

KVM/ARM updates for 4.6

- VHE support so that we can run the kernel at EL2 on ARMv8.1 systems
- PMU support for guests
- 32bit world switch rewritten in C
- Various optimizations to the vgic save/restore code

Conflicts:
	include/uapi/linux/kvm.h

Merge branch 'kvm-ppc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into HEAD

2016-03-03T13:36:07+00:00

The highlights are:

* Enable VFIO device on PowerPC, from David Gibson
* Optimizations to speed up IPIs between vcpus in HV KVM,
  from Suresh Warrier (who is also Suresh E. Warrier)
* In-kernel handling of IOMMU hypercalls, and support for dynamic DMA
  windows (DDW), from Alexey Kardashevskiy.

Signed-off-by: Paolo Bonzini

KVM: PPC: Add support for 64bit TCE windows

2016-03-01T22:56:50+00:00

The existing KVM_CREATE_SPAPR_TCE only supports 32bit windows which is not
enough for directly mapped windows as the guest can get more than 4GB.

This adds KVM_CREATE_SPAPR_TCE_64 ioctl and advertises it
via KVM_CAP_SPAPR_TCE_64 capability. The table size is checked against
the locked memory limit.

Since 64bit windows are to support Dynamic DMA windows (DDW), let's add
@bus_offset and @page_shift which are also required by DDW.

Signed-off-by: Alexey Kardashevskiy 
Signed-off-by: Paul Mackerras

KVM: PPC: Reserve KVM_CAP_SPAPR_TCE_64 capability number

2016-03-01T22:56:50+00:00

This adds a capability number for 64-bit TCE tables support.

Signed-off-by: Alexey Kardashevskiy 
Signed-off-by: Paul Mackerras

arm64: KVM: Introduce per-vcpu kvm device controls

2016-02-29T18:34:21+00:00

In some cases it needs to get/set attributes specific to a vcpu and so
needs something else than ONE_REG.

Let's copy the KVM_DEVICE approach, and define the respective ioctls
for the vcpu file descriptor.

Signed-off-by: Shannon Zhao 
Reviewed-by: Andrew Jones 
Acked-by: Peter Maydell 
Signed-off-by: Marc Zyngier

arm64: KVM: Add a new feature bit for PMUv3

2016-02-29T18:34:21+00:00

To support guest PMUv3, use one bit of the VCPU INIT feature array.
Initialize the PMU when initialzing the vcpu with that bit and PMU
overflow interrupt set.

Signed-off-by: Shannon Zhao 
Acked-by: Peter Maydell 
Reviewed-by: Andrew Jones 
Signed-off-by: Marc Zyngier

kvm/x86: Hyper-V VMBus hypercall userspace exit

2016-02-16T17:48:44+00:00

The patch implements KVM_EXIT_HYPERV userspace exit
functionality for Hyper-V VMBus hypercalls:
HV_X64_HCALL_POST_MESSAGE, HV_X64_HCALL_SIGNAL_EVENT.

Changes v3:
* use vcpu->arch.complete_userspace_io to setup hypercall
result

Changes v2:
* use KVM_EXIT_HYPERV for hypercalls

Signed-off-by: Andrey Smetanin 
Reviewed-by: Roman Kagan 
CC: Gleb Natapov 
CC: Paolo Bonzini 
CC: Joerg Roedel 
CC: "K. Y. Srinivasan" 
CC: Haiyang Zhang 
CC: Roman Kagan 
CC: Denis V. Lunev 
CC: qemu-devel@nongnu.org
Signed-off-by: Paolo Bonzini

KVM: s390: irq delivery should not rely on icptcode

2016-02-10T12:12:53+00:00

Program irq injection during program irq intercepts is the last candidates
that injects nullifying irqs and relies on delivery to do the right thing.

As we should not rely on the icptcode during any delivery (because that
value will not be migrated), let's add a flag, telling prog IRQ delivery
to not rewind the PSW in case of nullifying prog IRQs.

Signed-off-by: David Hildenbrand 
Signed-off-by: Christian Borntraeger

KVM: s390: migration / injection of prog irq ilc

2016-02-10T12:12:50+00:00

We have to migrate the program irq ilc and someday we will have to
specify the ilc without KVM trying to autodetect the value.

Let's reuse one of the spare fields in our program irq that should
always be set to 0 by user space. Because we also want to make use
of 0 ilcs ("not available"), we need a validity indicator.

If no valid ilc is given, we try to autodetect the ilc via the current
icptcode and icptstatus + parameter and store the valid ilc in the
irq structure.

This has a nice effect: QEMU's making use of KVM_S390_IRQ /
KVM_S390_SET_IRQ_STATE / KVM_S390_GET_IRQ_STATE for migration will
directly migrate the ilc without any changes.

Please note that we use bit 0 as validity and bit 1,2 for the ilc, so
by applying the ilc mask we directly get the ilen which is usually what
we work with.

Reviewed-by: Christian Borntraeger 
Signed-off-by: David Hildenbrand 
Signed-off-by: Christian Borntraeger

KVM: s390: implement the RI support of guest

2016-01-07T13:48:26+00:00

This patch adds runtime instrumentation support for KVM guest. We need to
setup a save area for the runtime instrumentation-controls control block(RICCB)
and implement the necessary interfaces to live migrate the guest settings.

We setup the sie control block in a way, that the runtime
instrumentation instructions of a guest are handled by hardware.

We also add a capability KVM_CAP_S390_RI to make this feature opt-in as
it needs migration support.

Signed-off-by: Fan Zhang 
Acked-by: Cornelia Huck 
Signed-off-by: Christian Borntraeger