hw/i386/intel_iommu: Fix index calculation in vtd_interrupt_remap_msi()

The values in "addr" are populated locally in this function in host
endian byte order, so we must not swap the index_l field here.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230802135723.178083-5-thuth@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Xu <peterx@redhat.com>

diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index 4028e3270179aaaa2a63a9ed077c438d9d96632b..3ca71df36938af00dc08e2d96045d3d582003b8a 100644 (file)
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -3459,7 +3459,7 @@ static int vtd_interrupt_remap_msi(IntelIOMMUState *iommu,
         goto out;
     }
 
-    index = addr.addr.index_h << 15 | le16_to_cpu(addr.addr.index_l);
+    index = addr.addr.index_h << 15 | addr.addr.index_l;
 
 #define  VTD_IR_MSI_DATA_SUBHANDLE       (0x0000ffff)
 #define  VTD_IR_MSI_DATA_RESERVED        (0xffff0000)