[Xen-devel] [PATCH v3 2/7] vTPM: limit libxl__add_vtpms() function to para virtual machine

[Quan Xu <quan.xu@xxxxxxxxx>]

Signed-off-by: Quan Xu <quan.xu@xxxxxxxxx>
---
 tools/libxl/libxl_create.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c
index b1ff5ae..66877b3 100644
--- a/tools/libxl/libxl_create.c
+++ b/tools/libxl/libxl_create.c
@@ -1358,8 +1358,15 @@ static void domcreate_attach_vtpms(libxl__egc *egc,
        goto error_out;
    }
 
-    /* Plug vtpm devices */
-   if (d_config->num_vtpms > 0) {
+    /*
+     * Plug vtpm devices only for PV guest. The xenstore directory is very
+     * different for PV guest and HVM guest, but it is still call it for
+     * creating HVM guest, and xl should create xenstore directory before
+     * spawning QEMU. So try to make it only for PV guest.
+     */
+    if (d_config->num_vtpms > 0 &&
+        d_config->b_info.type == LIBXL_DOMAIN_TYPE_PV) {
+
        /* Attach vtpms */
        libxl__multidev_begin(ao, &dcs->multidev);
        dcs->multidev.callback = domcreate_attach_pci;
-- 
1.8.3.2


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