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authorAlexey Kardashevskiy <aik@ozlabs.ru>2016-05-26 09:43:23 -0600
committerAlex Williamson <alex.williamson@redhat.com>2016-05-26 11:12:08 -0600
commitd78c19b5cf4821d0c198f4132a085bdbf19dda4c (patch)
tree1f3416f37172b620b96121c1ca396a88602cafb7 /include/hw/vfio
parent7a057b4fb9dec2baf975d1737a7258602e793c40 (diff)
memory: Fix IOMMU replay base address
Since a788f227 "memory: Allow replay of IOMMU mapping notifications" when new VFIO listener is added, all existing IOMMU mappings are replayed. However there is a problem that the base address of an IOMMU memory region (IOMMU MR) is ignored which is not a problem for the existing user (which is pseries) with its default 32bit DMA window starting at 0 but it is if there is another DMA window. This stores the IOMMU's offset_within_address_space and adjusts the IOVA before calling vfio_dma_map/vfio_dma_unmap. As the IOMMU notifier expects IOVA offset rather than the absolute address, this also adjusts IOVA in sPAPR H_PUT_TCE handler before calling notifier(s). Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'include/hw/vfio')
-rw-r--r--include/hw/vfio/vfio-common.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index a947f9ccda..0610377789 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -90,6 +90,7 @@ typedef struct VFIOContainer {
typedef struct VFIOGuestIOMMU {
VFIOContainer *container;
MemoryRegion *iommu;
+ hwaddr iommu_offset;
Notifier n;
QLIST_ENTRY(VFIOGuestIOMMU) giommu_next;
} VFIOGuestIOMMU;