system/xen: Local attach support for PHY backends using scripts

1 files changed, 58 insertions, 0 deletions

diff --git a/system/xen/patches/local_attach_support_for_phy.patch b/system/xen/patches/local_attach_support_for_phy.patch
new file mode 100644
index 0000000000000..41fe63984559a
--- /dev/null
+++ b/system/xen/patches/local_attach_support_for_phy.patch
@@ -0,0 +1,58 @@
+commit 3bcf91cbbd9a18db9ae7d594ffde7979774ed512
+Author: Roger Pau Monne <roger.pau@xxxxxxxxxx>
+Date:   Wed Feb 12 11:15:17 2014 +0100
+
+    libxl: local attach support for PHY backends using scripts
+    
+    Allow disks using the PHY backend to locally attach if using a script.
+    
+    Signed-off-by: Roger Pau Monnà <roger.pau@xxxxxxxxxx>
+    Suggested-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
+
+
+Index: xen-4.3.2-testing/tools/libxl/libxl.c
+===================================================================
+--- xen-4.3.2-testing.orig/tools/libxl/libxl.c
++++ xen-4.3.2-testing/tools/libxl/libxl.c
+@@ -2604,6 +2604,16 @@ void libxl__device_disk_local_initiate_a
+ 
+     switch (disk->backend) {
+         case LIBXL_DISK_BACKEND_PHY:
++            if (disk->script != NULL) {
++                LOG(DEBUG, "trying to locally attach PHY device %s with script %s",
++                           disk->pdev_path, disk->script);
++                libxl__prepare_ao_device(ao, &dls->aodev);
++                dls->aodev.callback = local_device_attach_cb;
++                device_disk_add(egc, LIBXL_TOOLSTACK_DOMID, disk,
++                                &dls->aodev, libxl__alloc_vdev,
++                                (void *) blkdev_start);
++                return;
++            }
+             LIBXL__LOG(ctx, LIBXL__LOG_DEBUG, "locally attaching PHY disk %s",
+                        disk->pdev_path);
+             dev = disk->pdev_path;
+@@ -2683,7 +2693,7 @@ static void local_device_attach_cb(libxl
+     }
+ 
+     dev = GCSPRINTF("/dev/%s", disk->vdev);
+-    LOG(DEBUG, "locally attaching qdisk %s", dev);
++    LOG(DEBUG, "locally attached disk %s", dev);
+ 
+     rc = libxl__device_from_disk(gc, LIBXL_TOOLSTACK_DOMID, disk, &device);
+     if (rc < 0)
+@@ -2723,6 +2733,7 @@ void libxl__device_disk_local_initiate_d
+     if (!dls->diskpath) goto out;
+ 
+     switch (disk->backend) {
++        case LIBXL_DISK_BACKEND_PHY:
+         case LIBXL_DISK_BACKEND_QDISK:
+             if (disk->vdev != NULL) {
+                 GCNEW(device);
+@@ -2740,7 +2751,6 @@ void libxl__device_disk_local_initiate_d
+             /* disk->vdev == NULL; fall through */
+         default:
+             /*
+-             * Nothing to do for PHYSTYPE_PHY.
+              * For other device types assume that the blktap2 process is
+              * needed by the soon to be started domain and do nothing.
+              */