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[PATCH v3 3/8] tools/init-dom0less: Only introduce un-introduced domains


  • To: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
  • From: Jason Andryuk <jason.andryuk@xxxxxxx>
  • Date: Tue, 26 Aug 2025 17:08:42 -0400
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  • Cc: Jason Andryuk <jason.andryuk@xxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>
  • Delivery-date: Tue, 26 Aug 2025 21:09:14 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

In preparation for supporting already-introduced domain, only call
xs_introduce_domain() if a domain is not already introduced.  Their
xenstore entries will be written, but the xenstore introduction is
skipped.

Signed-off-by: Jason Andryuk <jason.andryuk@xxxxxxx>
---
v3:
Reordered
---
 tools/helpers/init-dom0less.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/tools/helpers/init-dom0less.c b/tools/helpers/init-dom0less.c
index 8de8e44ad3..3906c4b61a 100644
--- a/tools/helpers/init-dom0less.c
+++ b/tools/helpers/init-dom0less.c
@@ -319,9 +319,13 @@ static int init_domain(libxl_dominfo *info)
     if (rc)
         err(1, "writing to xenstore");
 
-    rc = xs_introduce_domain(xsh, info->domid, xenstore_pfn, xenstore_evtchn);
-    if (!rc)
-        err(1, "xs_introduce_domain");
+    if (!xs_is_domain_introduced(xsh, info->domid)) {
+        rc = xs_introduce_domain(xsh, info->domid, xenstore_pfn,
+                                 xenstore_evtchn);
+        if (!rc)
+            err(1, "xs_introduce_domain");
+    }
+
     return 0;
 }
 
-- 
2.50.1




 


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