KVM: arm/arm64: vgic: Implement support for userspace access
authorVijaya Kumar K <Vijaya.Kumar@cavium.com>
Thu, 26 Jan 2017 14:20:46 +0000 (19:50 +0530)
committerMarc Zyngier <marc.zyngier@arm.com>
Mon, 30 Jan 2017 13:47:02 +0000 (13:47 +0000)
commit2df903a89a81c44da7ae94837af5c00a72ce6aaf
tree238583621706e74c1baf7d05483fe67e49039e05
parent10f92c4c537794f4e2b5f545a8953790c5445d0f
KVM: arm/arm64: vgic: Implement support for userspace access

Read and write of some registers like ISPENDR and ICPENDR
from userspace requires special handling when compared to
guest access for these registers.

Refer to Documentation/virtual/kvm/devices/arm-vgic-v3.txt
for handling of ISPENDR, ICPENDR registers handling.

Add infrastructure to support guest and userspace read
and write for the required registers
Also moved vgic_uaccess from vgic-mmio-v2.c to vgic-mmio.c

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>
virt/kvm/arm/vgic/vgic-mmio-v2.c
virt/kvm/arm/vgic/vgic-mmio-v3.c
virt/kvm/arm/vgic/vgic-mmio.c
virt/kvm/arm/vgic/vgic-mmio.h