kernel.git/Documentation/virtual/kvm/devices, branch linux-3.18.y

KVM: s390: fix get_all_floating_irqs

2015-05-17T23:11:49Z

[ Upstream commit 94aa033efcac47b09db22cb561e135baf37b7887 ] This fixes a bug introduced with commit c05c4186bbe4 ("KVM: s390: add floating irq controller"). get_all_floating_irqs() does copy_to_user() while holding a spin lock. Let's fix this by filling a temporary buffer first and copy it to userspace after giving up the lock. Cc: # 3.18+: 69a8d4562638 KVM: s390: no need to hold... Reviewed-by: David Hildenbrand Signed-off-by: Jens Freimann Signed-off-by: Christian Borntraeger Acked-by: Cornelia Huck Signed-off-by: Sasha Levin

arm/arm64: KVM: vgic: make number of irqs a configurable attribute

2014-09-19T01:48:58Z

In order to make the number of interrupts configurable, use the new fancy device management API to add KVM_DEV_ARM_VGIC_GRP_NR_IRQS as a VGIC configurable attribute. Userspace can now specify the exact size of the GIC (by increments of 32 interrupts). Reviewed-by: Christoffer Dall Signed-off-by: Marc Zyngier

KVM: s390: Exploiting generic userspace interface for cmma

2014-04-22T11:24:32Z

To enable CMMA and to reset its state we use the vm kvm_device ioctls, encapsulating attributes within the KVM_S390_VM_MEM_CTRL group. Signed-off-by: Dominik Dingel Signed-off-by: Christian Borntraeger

KVM: s390: Per-vm kvm device controls

2014-04-22T11:24:12Z

We sometimes need to get/set attributes specific to a virtual machine and so need something else than ONE_REG. Let's copy the KVM_DEVICE approach, and define the respective ioctls for the vm file descriptor. Signed-off-by: Dominik Dingel Reviewed-by: Cornelia Huck Acked-by: Alexander Graf Signed-off-by: Christian Borntraeger

KVM: s390: adapter interrupt sources

2014-03-21T12:42:49Z

Add a new interface to register/deregister sources of adapter interrupts identified by an unique id via the flic. Adapters may also be maskable and carry a list of pinned pages. These adapters will be used by irq routing later. Acked-by: Christian Borntraeger Signed-off-by: Cornelia Huck

KVM: async_pf: Async page fault support on s390

2014-01-30T12:11:02Z

This patch enables async page faults for s390 kvm guests. It provides the userspace API to enable and disable_wait this feature. The disable_wait will enforce that the feature is off by waiting on it. Also it includes the diagnose code, called by the guest to enable async page faults. The async page faults will use an already existing guest interface for this purpose, as described in "CP Programming Services (SC24-6084)". Signed-off-by: Dominik Dingel Signed-off-by: Christian Borntraeger

KVM: s390: add floating irq controller

2014-01-30T09:25:20Z

This patch adds a floating irq controller as a kvm_device. It will be necessary for migration of floating interrupts as well as for hardening the reset code by allowing user space to explicitly remove all pending floating interrupts. Signed-off-by: Jens Freimann Reviewed-by: Cornelia Huck Signed-off-by: Christian Borntraeger

KVM: arm-vgic: Add vgic reg access from dev attr

2013-12-21T18:01:39Z

Add infrastructure to handle distributor and cpu interface register accesses through the KVM_{GET/SET}_DEVICE_ATTR interface by adding the KVM_DEV_ARM_VGIC_GRP_DIST_REGS and KVM_DEV_ARM_VGIC_GRP_CPU_REGS groups and defining the semantics of the attr field to be the MMIO offset as specified in the GICv2 specs. Missing register accesses or other changes in individual register access functions to support save/restore of the VGIC state is added in subsequent patches. Acked-by: Marc Zyngier Signed-off-by: Christoffer Dall

KVM: arm-vgic: Set base addr through device API

2013-12-21T18:01:22Z

Support setting the distributor and cpu interface base addresses in the VM physical address space through the KVM_{SET,GET}_DEVICE_ATTR API in addition to the ARM specific API. This has the added benefit of being able to share more code in user space and do things in a uniform manner. Also deprecate the older API at the same time, but backwards compatibility will be maintained. Acked-by: Marc Zyngier Signed-off-by: Christoffer Dall

KVM: arm-vgic: Support KVM_CREATE_DEVICE for VGIC

2013-12-21T18:01:16Z

Support creating the ARM VGIC device through the KVM_CREATE_DEVICE ioctl, which can then later be leveraged to use the KVM_{GET/SET}_DEVICE_ATTR, which is useful both for setting addresses in a more generic API than the ARM-specific one and is useful for save/restore of VGIC state. Adds KVM_CAP_DEVICE_CTRL to ARM capabilities. Note that we change the check for creating a VGIC from bailing out if any VCPUs were created, to bailing out if any VCPUs were ever run. This is an important distinction that shouldn't break anything, but allows creating the VGIC after the VCPUs have been created. Acked-by: Marc Zyngier Signed-off-by: Christoffer Dall