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sPAPR/IOMMU: Fix TCE entry permission

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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>
This commit is contained in:
Gavin Shan 2014-07-14 22:09:43 +10:00 • committed by Alexander Graf
parent f92f5da108
commit 27e27782f7
2 changed files with 3 additions and 3 deletions
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2
hw/misc/vfio.c
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@ -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,