From a98f26f183801685ef57333de4bafd4bbc692c7c Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 8 Jul 2014 12:09:07 +0100 Subject: arm/arm64: KVM: vgic: make number of irqs a configurable attribute 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 --- Documentation/virtual/kvm/devices/arm-vgic.txt | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'Documentation/virtual') diff --git a/Documentation/virtual/kvm/devices/arm-vgic.txt b/Documentation/virtual/kvm/devices/arm-vgic.txt index 7f4e91b1316b..df8b0c7540b6 100644 --- a/Documentation/virtual/kvm/devices/arm-vgic.txt +++ b/Documentation/virtual/kvm/devices/arm-vgic.txt @@ -71,3 +71,13 @@ Groups: Errors: -ENODEV: Getting or setting this register is not yet supported -EBUSY: One or more VCPUs are running + + KVM_DEV_ARM_VGIC_GRP_NR_IRQS + Attributes: + A value describing the number of interrupts (SGI, PPI and SPI) for + this GIC instance, ranging from 64 to 1024, in increments of 32. + + Errors: + -EINVAL: Value set is out of the expected range + -EBUSY: Value has already be set, or GIC has already been initialized + with default values. -- cgit v1.2.3