path: root/Documentation/virtual
diff options
authorChristoffer Dall <christoffer.dall@linaro.org>2013-09-23 14:55:56 -0700
committerChristoffer Dall <christoffer.dall@linaro.org>2013-12-21 10:01:22 -0800
commitce01e4e8874d410738f4b4733b26642d6611a331 (patch)
treef58e80efb4fc588858f4c16e48dec45659cb5048 /Documentation/virtual
parent7330672befe6269e575f79b924a7068b26c144b4 (diff)
KVM: arm-vgic: Set base addr through device API
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 <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'Documentation/virtual')
2 files changed, 17 insertions, 1 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index a30035dd4c26..867112f1968d 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -2391,7 +2391,8 @@ struct kvm_reg_list {
This ioctl returns the guest registers that are supported for the
+4.85 KVM_ARM_SET_DEVICE_ADDR (deprecated)
Architectures: arm, arm64
@@ -2429,6 +2430,10 @@ must be called after calling KVM_CREATE_IRQCHIP, but before calling
KVM_RUN on any of the VCPUs. Calling this ioctl twice for any of the
base addresses will return -EEXIST.
+Note, this IOCTL is deprecated and the more flexible SET/GET_DEVICE_ATTR API
+should be used instead.
Capability: KVM_CAP_PPC_RTAS
diff --git a/Documentation/virtual/kvm/devices/arm-vgic.txt b/Documentation/virtual/kvm/devices/arm-vgic.txt
index 38f27f709a99..c9febb2a0c3e 100644
--- a/Documentation/virtual/kvm/devices/arm-vgic.txt
+++ b/Documentation/virtual/kvm/devices/arm-vgic.txt
@@ -8,3 +8,14 @@ Only one VGIC instance may be instantiated through either this API or the
legacy KVM_CREATE_IRQCHIP api. The created VGIC will act as the VM interrupt
controller, requiring emulated user-space devices to inject interrupts to the
VGIC instead of directly to CPUs.
+ Attributes:
+ KVM_VGIC_V2_ADDR_TYPE_DIST (rw, 64-bit)
+ Base address in the guest physical address space of the GIC distributor
+ register mappings.
+ KVM_VGIC_V2_ADDR_TYPE_CPU (rw, 64-bit)
+ Base address in the guest physical address space of the GIC virtual cpu
+ interface register mappings.