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authorVijaya Kumar K <Vijaya.Kumar@cavium.com>2017-01-26 15:20:47 +0100
committerMarc Zyngier <marc.zyngier@arm.com>2017-01-30 14:47:07 +0100
commit94574c9488e253c65ad2e8955163e330f07119b6 (patch)
tree1e117aae2d377e820b8d80570746abd021fb9a03 /Documentation/prctl
parentKVM: arm/arm64: vgic: Implement support for userspace access (diff)
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KVM: arm/arm64: vgic: Add distributor and redistributor access
VGICv3 Distributor and Redistributor registers are accessed using KVM_DEV_ARM_VGIC_GRP_DIST_REGS and KVM_DEV_ARM_VGIC_GRP_REDIST_REGS with KVM_SET_DEVICE_ATTR and KVM_GET_DEVICE_ATTR ioctls. These registers are accessed as 32-bit and cpu mpidr value passed along with register offset is used to identify the cpu for redistributor registers access. The version of VGIC v3 specification is defined here Documentation/virtual/kvm/devices/arm-vgic-v3.txt Also update arch/arm/include/uapi/asm/kvm.h to compile for AArch32 mode. Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@cavium.com> Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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