The iommu node will be required for other virtio device types too, not just disk device.
Move the call to make_xen_iommu_node(), out of the disk device specific block and rename "iommu_created" variable to "iommu_needed", and set it to true for virtio disk device.
Signed-off-by: Viresh Kumar viresh.kumar@linaro.org --- V6->V6.1: - Initialize iommu_needed at declaration time only. - Update comment.
tools/libs/light/libxl_arm.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-)
diff --git a/tools/libs/light/libxl_arm.c b/tools/libs/light/libxl_arm.c index 55aee15c10b4..fe1c92383dd6 100644 --- a/tools/libs/light/libxl_arm.c +++ b/tools/libs/light/libxl_arm.c @@ -1157,7 +1157,7 @@ static int libxl__prepare_dtb(libxl__gc *gc, libxl_domain_config *d_config, size_t fdt_size = 0; int pfdt_size = 0; libxl_domain_build_info *const info = &d_config->b_info; - bool iommu_created; + bool iommu_needed = false; unsigned int i;
const libxl_version_info *vers; @@ -1265,22 +1265,25 @@ static int libxl__prepare_dtb(libxl__gc *gc, libxl_domain_config *d_config, if (d_config->num_pcidevs) FDT( make_vpci_node(gc, fdt, ainfo, dom) );
- iommu_created = false; for (i = 0; i < d_config->num_disks; i++) { libxl_device_disk *disk = &d_config->disks[i];
if (disk->specification == LIBXL_DISK_SPECIFICATION_VIRTIO) { - if (disk->backend_domid != LIBXL_TOOLSTACK_DOMID && - !iommu_created) { - FDT( make_xen_iommu_node(gc, fdt) ); - iommu_created = true; - } + if (disk->backend_domid != LIBXL_TOOLSTACK_DOMID) + iommu_needed = true;
FDT( make_virtio_mmio_node(gc, fdt, disk->base, disk->irq, disk->backend_domid) ); } }
+ /* + * The iommu node should be created only once for all virtio-mmio + * devices. + */ + if (iommu_needed) + FDT( make_xen_iommu_node(gc, fdt) ); + if (pfdt) FDT( copy_partial_fdt(gc, fdt, pfdt) );