The size of the accessible iommu memory region in the guest
is calculated by the gues as:
(PCI Address Limit) - (PCI Base Address) + 1.
Let's use this value to limit the IOMMU region size.
Signed-off-by: Pierre Morel <[email protected]>
---
hw/s390x/s390-pci-bus.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
index 69e0671..e97696a 100644
--- a/hw/s390x/s390-pci-bus.c
+++ b/hw/s390x/s390-pci-bus.c
@@ -660,7 +660,7 @@ void s390_pci_iommu_enable(S390PCIIOMMU *iommu)
char *name = g_strdup_printf("iommu-s390-%04x", iommu->pbdev->uid);
memory_region_init_iommu(&iommu->iommu_mr, sizeof(iommu->iommu_mr),
TYPE_S390_IOMMU_MEMORY_REGION, OBJECT(&iommu->mr),
- name, iommu->pal + 1);
+ name, iommu->pal - iommu->pba + 1);
iommu->enabled = true;
memory_region_add_subregion(&iommu->mr, 0,
MEMORY_REGION(&iommu->iommu_mr));
g_free(name);
--
2.7.4
