[Qemu-devel] [PATCH v5 11/11] spapr-vfio: enable for spapr

[Alexey Kardashevskiy <aik@ozlabs.ru>]

This turns the sPAPR support on and enables VFIO container use
in the kernel.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---
Changes:
v5:
* multiple returns converted to gotos

v4:
* fixed format string to use %m which is a glibc extension:
"Print output of strerror(errno). No argument is required."
---
 hw/misc/vfio.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/hw/misc/vfio.c b/hw/misc/vfio.c
index 6dee090..e7b2b36 100644
--- a/hw/misc/vfio.c
+++ b/hw/misc/vfio.c
@@ -3494,6 +3494,34 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as)
 
         container->iommu_data.type1.initialized = true;
 
+    } else if (ioctl(fd, VFIO_CHECK_EXTENSION, VFIO_SPAPR_TCE_IOMMU)) {
+        ret = ioctl(group->fd, VFIO_GROUP_SET_CONTAINER, &fd);
+        if (ret) {
+            error_report("vfio: failed to set group container: %m");
+            ret = -errno;
+            goto free_container_exit;
+        }
+
+        ret = ioctl(fd, VFIO_SET_IOMMU, VFIO_SPAPR_TCE_IOMMU);
+        if (ret) {
+            error_report("vfio: failed to set iommu for container: %m");
+            ret = -errno;
+            goto free_container_exit;
+        }
+
+        ret = ioctl(fd, VFIO_IOMMU_ENABLE);
+        if (ret) {
+            error_report("vfio: failed to enable container: %m");
+            ret = -errno;
+            goto free_container_exit;
+        }
+
+        container->iommu_data.type1.listener = vfio_memory_listener;
+        container->iommu_data.release = vfio_listener_release;
+
+        memory_listener_register(&container->iommu_data.type1.listener,
+                                 container->space->as);
+
     } else {
         error_report("vfio: No available IOMMU models");
         ret = -EINVAL;
-- 
1.8.4.rc4