From: Eric Auger <eric.auger@redhat.com>
Date: Thu, 26 Oct 2017 17:23:04 +0200
Subject: KVM: arm/arm64: vgic-its: Fix vgic_its_restore_collection_table
returned value
Patch-mainline: v4.14-rc8
Git-commit: f31b98b57f72dcd458eb63f795f4efe272acc2e3
References: bsc#1077761
vgic_its_restore_cte returns +1 if the collection table entry
is valid and properly decoded. As a consequence, if the
collection table is fully filled with valid data that are
decoded without error, vgic_its_restore_collection_table()
returns +1. This is wrong.
Let's return 0 in that case.
Fixes: ea1ad53e1e31a3 (KVM: arm64: vgic-its: Collection table save/restore)
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Acked-by: Alexander Graf <agraf@suse.de>
---
virt/kvm/arm/vgic/vgic-its.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/virt/kvm/arm/vgic/vgic-its.c
+++ b/virt/kvm/arm/vgic/vgic-its.c
@@ -2264,6 +2264,10 @@
gpa += cte_esz;
read += cte_esz;
}
+
+ if (ret > 0)
+ return 0;
+
return ret;
}