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intel_iommu: fix incorrect device invalidate

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"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>
This commit is contained in:
Peter Xu 2016-11-29 13:43:40 +08:00 committed by Michael S. Tsirkin
parent 5449c230fa
commit 6cb99acc28
1 changed files with 1 additions and 0 deletions
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hw/i386/intel_iommu.c
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@ -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));