[Qemu-devel] [PATCH v4 11/12] spapr vfio: enable for spapr

[Alexey Kardashevskiy]

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

Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru>
---
Changes:
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 | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/hw/misc/vfio.c b/hw/misc/vfio.c
index 4210471..882da70 100644
--- a/hw/misc/vfio.c
+++ b/hw/misc/vfio.c
@@ -2815,6 +2815,36 @@ static int vfio_connect_container(VFIOGroup *group, 
VFIOAddressSpace *space)
 
         memory_listener_register(&container->iommu_data.listener,
                                  container->space->as);
+    } 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");
+            g_free(container);
+            close(fd);
+            return -errno;
+        }
+
+        ret = ioctl(fd, VFIO_SET_IOMMU, VFIO_SPAPR_TCE_IOMMU);
+        if (ret) {
+            error_report("vfio: failed to set iommu for container: %m");
+            g_free(container);
+            close(fd);
+            return -errno;
+        }
+
+        ret = ioctl(fd, VFIO_IOMMU_ENABLE);
+        if (ret) {
+            error_report("vfio: failed to enable container: %m");
+            g_free(container);
+            close(fd);
+            return -errno;
+        }
+
+        container->iommu_data.listener = vfio_memory_listener;
+        container->iommu_data.release = vfio_listener_release;
+
+        memory_listener_register(&container->iommu_data.listener,
+                                 container->space->as);
     } else {
         error_report("vfio: No available IOMMU models");
         g_free(container);
-- 
1.8.4.rc4