When restore GIC/ITS, GICR_CTLR must be restored after GICR_PROPBASER
and GICR_PENDBASER. That is important, as both of GICR_PROPBASER and
GICR_PENDBASER will fail to be loaded when lpi has enabled yet in
GICR_CTLR. Keep the restore order above will avoid that issue.
Shout it out at the doc is very helpful that may avoid lots of debug work.
Signed-off-by: Jianyong Wu <jianyong.wu@xxxxxxx>
---
Documentation/virt/kvm/devices/arm-vgic-its.rst | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/Documentation/virt/kvm/devices/arm-vgic-its.rst b/Documentation/virt/kvm/devices/arm-vgic-its.rst
index d257eddbae29..6b36de6937f8 100644
--- a/Documentation/virt/kvm/devices/arm-vgic-its.rst
+++ b/Documentation/virt/kvm/devices/arm-vgic-its.rst
@@ -126,7 +126,8 @@ ITS Restore Sequence:
The following ordering must be followed when restoring the GIC and the ITS:
a) restore all guest memory and create vcpus
-b) restore all redistributors
+b) restore all redistributors:
+ make sure restore GICR_CTLR after GICR_PROPBASER and GICR_PENDBASER
c) provide the ITS base address
(KVM_DEV_ARM_VGIC_GRP_ADDR)
d) restore the ITS in the following order:
--
2.17.1
