libxl: start pvqemu when 9pfs is requested

PV 9pfs requires the PV backend in QEMU. Make sure that libxl knows it.

Signed-off-by: Stefano Stabellini <stefanos@xilinx.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
(cherry picked from commit 47bc2c29b5a875e5f4abd36f2cb9faa594299f6c)

diff --git a/tools/libxl/libxl_dm.c b/tools/libxl/libxl_dm.c
index bad3ef5b679d85430ff964d376ad45535cbe95d5..b00afe1d13546bcae5a327a257d86c532b02bacf 100644 (file)
--- a/tools/libxl/libxl_dm.c
+++ b/tools/libxl/libxl_dm.c
@@ -2596,7 +2596,7 @@ int libxl__need_xenpv_qemu(libxl__gc *gc, libxl_domain_config *d_config)
         goto out;
     }
 
-    if (d_config->num_vfbs > 0) {
+    if (d_config->num_vfbs > 0 || d_config->num_p9s > 0) {
         ret = 1;
         goto out;
     }