KVM: arm/arm64: vgic: Add debugfs vgic-state file
authorChristoffer Dall <christoffer.dall@linaro.org>
Tue, 17 Jan 2017 22:09:13 +0000 (23:09 +0100)
committerChristoffer Dall <christoffer.dall@linaro.org>
Wed, 25 Jan 2017 12:50:03 +0000 (13:50 +0100)
commit10f92c4c537794f4e2b5f545a8953790c5445d0f
tree1cb2edb34246edf8a5047f2721608cb2ca48e812
parent8694e4da66a636665f51b94a6a7a40c9fc0dc5ec
KVM: arm/arm64: vgic: Add debugfs vgic-state file

Add a file to debugfs to read the in-kernel state of the vgic.  We don't
do any locking of the entire VGIC state while traversing all the IRQs,
so if the VM is running the user/developer may not see a quiesced state,
but should take care to pause the VM using facilities in user space for
that purpose.

We also don't support LPIs yet, but they can be added easily if needed.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
arch/arm/kvm/Makefile
arch/arm64/kvm/Makefile
include/kvm/arm_vgic.h
virt/kvm/arm/vgic/vgic-debug.c [new file with mode: 0644]
virt/kvm/arm/vgic/vgic-init.c
virt/kvm/arm/vgic/vgic.h