[Xen-devel] [PATCH] libxc: really tolerate empty PV records

["Jan Beulich" <JBeulich@xxxxxxxx>]

Commit 119ee4d773 ("tools/libxc: Tolerate specific zero-content records
in migration v2 streams") meant tolerate those, but failed to set rc
accordingly.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
---
This is what is currently breaking save/restore on the 4.8 branch; I
haven't checked yet why the sending side produces an empty record there.
I wonder whether that's related to f1a0a8c3fe ("tools/libxc: Fix
restoration of PV MSRs after migrate") not having been backported yet.
Otoh the latter is missing on 4.7 too, yet there save/restore doesn't
fail.

--- a/tools/libxc/xc_sr_restore_x86_pv.c
+++ b/tools/libxc/xc_sr_restore_x86_pv.c
@@ -770,6 +770,7 @@ static int handle_x86_pv_vcpu_blob(struc
     {
         DBGPRINTF("Skipping empty %s record for vcpu %u\n",
                   rec_type_to_str(rec->type), vhdr->vcpu_id);
+        rc = 0;
         goto out;
     }
 




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