KVM: arm64: vgic-its: Fix vgic_its_check_device_id BE handling

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 <[email protected]>
josf · Jul 18, 2016 · 7e3963a · 7e3963a
1 parent c009107
commit 7e3963a
Showing 1 changed file with 2 additions and 0 deletions.
diff --git 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;