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authorGavin Shan <gwshan@linux.vnet.ibm.com>2014-07-14 22:09:43 +1000
committerAlexander Graf <agraf@suse.de>2014-07-15 16:11:59 +0200
commit27e27782f78212cbd97170b0854c35a0738cfd34 (patch)
treeb89877a5020186b5f4fcd49a2cfebdd5389c433d /hw/misc
parentf92f5da108225fc7dcc5f357fdc473083890fe3f (diff)
sPAPR/IOMMU: Fix TCE entry permission
The permission of TCE entry should exclude physical base address. Otherwise, unmapping TCE entry can be interpreted to mapping TCE entry wrongly for VFIO devices. Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Acked-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'hw/misc')
-rw-r--r--hw/misc/vfio.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/misc/vfio.c b/hw/misc/vfio.c
index aef4c9ce9d..0b9eba0c84 100644
--- a/hw/misc/vfio.c
+++ b/hw/misc/vfio.c
@@ -2489,7 +2489,7 @@ static void vfio_iommu_map_notify(Notifier *n, void *data)
return;
}
- if (iotlb->perm != IOMMU_NONE) {
+ if ((iotlb->perm & IOMMU_RW) != IOMMU_NONE) {
vaddr = memory_region_get_ram_ptr(mr) + xlat;
ret = vfio_dma_map(container, iotlb->iova,