+ hwaddr iova, ram_addr_t size)
+{
+ int ret;
+ struct iommu_ioas_unmap unmap = {
+ .size = sizeof(unmap),
+ .ioas_id = ioas_id,
+ .iova = iova,
+ .length = size,
+ };
+
+ ret = ioctl(be->fd, IOMMU_IOAS_UNMAP, &unmap);
+ trace_iommufd_backend_unmap_dma(be->fd, ioas_id, iova, size, ret);
+ /*
+ * TODO: IOMMUFD doesn't support mapping PCI BARs for now.
+ * It's not a problem if there is no p2p dma, relax it here
+ * and avoid many noisy trigger from vIOMMU side.
Should we add a warn_report() ?
The purpose of checking "ret && errno == ENOENT" is to avoid many
error_report() for PCI BARs, If we add warn_report(), there will still be
many print for PCI BARs.
a trace event then ?
Thanks,
C.
