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[Xen-devel] [PATCH] xen_disk: treat "vhd" as "vpc"

The Xen toolstack uses "vhd" to specify a disk in VHD format, however
the name of the driver in QEMU is "vpc". Replace "vhd" with "vpc", so
that QEMU can find the right driver to use for it.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

diff --git a/hw/block/xen_disk.c b/hw/block/xen_disk.c
index 267d8a8..37e14d1 100644
--- a/hw/block/xen_disk.c
+++ b/hw/block/xen_disk.c
@@ -811,6 +811,9 @@ static int blk_init(struct XenDevice *xendev)
     if (!strcmp("aio", blkdev->fileproto)) {
         blkdev->fileproto = "raw";
+    if (!strcmp("vhd", blkdev->fileproto)) {
+        blkdev->fileproto = "vpc";
+    }
     if (blkdev->mode == NULL) {
         blkdev->mode = xenstore_read_be_str(&blkdev->xendev, "mode");

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