[PATCH] libxl: Fix vcpu-set for PV guest.

[Anthony PERARD <anthony.perard@citrix.com>]

vcpu-set will try to use the HVM path (through QEMU) instead of the PV
path (through xenstore) for a PV guest, if there is a QEMU running for
this domain. This patch check which kind of guest is running before
before doing any call.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---

Yun, is this patch fix the issue with your PV guest ?


 tools/libxl/libxl.c | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index 2845ca4..c4fe6af 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -4692,12 +4692,21 @@ int libxl_set_vcpuonline(libxl_ctx *ctx, uint32_t domid, libxl_bitmap *cpumap)
 {
     GC_INIT(ctx);
     int rc;
-    switch (libxl__device_model_version_running(gc, domid)) {
-    case LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN_TRADITIONAL:
-        rc = libxl__set_vcpuonline_xenstore(gc, domid, cpumap);
+    switch (libxl__domain_type(gc, domid)) {
+    case LIBXL_DOMAIN_TYPE_HVM:
+        switch (libxl__device_model_version_running(gc, domid)) {
+        case LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN_TRADITIONAL:
+            rc = libxl__set_vcpuonline_xenstore(gc, domid, cpumap);
+            break;
+        case LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN:
+            rc = libxl__set_vcpuonline_qmp(gc, domid, cpumap);
+            break;
+        default:
+            rc = ERROR_INVAL;
+        }
         break;
-    case LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN:
-        rc = libxl__set_vcpuonline_qmp(gc, domid, cpumap);
+    case LIBXL_DOMAIN_TYPE_PV:
+        rc = libxl__set_vcpuonline_xenstore(gc, domid, cpumap);
         break;
     default:
         rc = ERROR_INVAL;
-- 
Anthony PERARD