[Xen-changelog] [qemu-xen master] intel_iommu: fix incorrect device invalidate

[patchbot@xxxxxxx]

commit 6cb99acc2808cc41e2d772a23e9cc564515535cc
Author:     Peter Xu <peterx@xxxxxxxxxx>
AuthorDate: Tue Nov 29 13:43:40 2016 +0800
Commit:     Michael S. Tsirkin <mst@xxxxxxxxxx>
CommitDate: Wed Nov 30 04:20:57 2016 +0200

    intel_iommu: fix incorrect device invalidate
    
    "mask" needs to be inverted before use.
    
    Signed-off-by: Peter Xu <peterx@xxxxxxxxxx>
    Reviewed-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
    Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
---
 hw/i386/intel_iommu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index 1b706ad..5f3e351 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -988,6 +988,7 @@ static void vtd_context_device_invalidate(IntelIOMMUState 
*s,
         mask = 7;   /* Mask bit 2:0 in the SID field */
         break;
     }
+    mask = ~mask;
     VTD_DPRINTF(INV, "device-selective invalidation source 0x%"PRIx16
                     " mask %"PRIu16, source_id, mask);
     vtd_bus = vtd_find_as_from_bus_num(s, VTD_SID_TO_BUS(source_id));
--
generated by git-patchbot for /home/xen/git/qemu-xen.git#master

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