File 0112-intel_iommu-fix-incorrect-device-in.patch of Package qemu.19799

From: Peter Xu <peterx@redhat.com>
Date: Tue, 29 Nov 2016 13:43:40 +0800
Subject: intel_iommu: fix incorrect device invalidate

"mask" needs to be inverted before use.

Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 6cb99acc2808cc41e2d772a23e9cc564515535cc)
[BR: BSC#1013341]
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 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 347718f938636fe67d96b4388e70..08b0c4e343c476d91ff73adb40b1 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -957,6 +957,7 @@ 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));