[PATCH 47/55] KVM: arm64: vgic-its: Fix vgic_its_check_device_id BE handling
From: Marc Zyngier <hidden>
Date: 2016-07-22 17:29:04
Also in:
kvm, kvmarm
Subsystem:
kernel virtual machine (kvm), the rest · Maintainers:
Paolo Bonzini, Linus Torvalds
The ITS tables are stored in LE format. If the host is reading a L1 table entry to check its validity, it must convert it to the CPU endianness. Signed-off-by: Marc Zyngier <redacted> --- virt/kvm/arm/vgic/vgic-its.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c
index d6697c4..2ac5927 100644
--- a/virt/kvm/arm/vgic/vgic-its.c
+++ b/virt/kvm/arm/vgic/vgic-its.c@@ -707,6 +707,8 @@ static bool vgic_its_check_device_id(struct kvm *kvm, struct vgic_its *its, &indirect_ptr, sizeof(indirect_ptr))) return false; + indirect_ptr = le64_to_cpu(indirect_ptr); + /* check the valid bit of the first level entry */ if (!(indirect_ptr & BIT_ULL(63))) return false;
--
2.8.1