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[libvirt] [PATCH] conf: Check CPU cache for ABI stability



Signed-off-by: Jiri Denemark <jdenemar redhat com>
---
 src/conf/cpu_conf.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/conf/cpu_conf.c b/src/conf/cpu_conf.c
index 1b098c476..194f03faf 100644
--- a/src/conf/cpu_conf.c
+++ b/src/conf/cpu_conf.c
@@ -915,6 +915,16 @@ virCPUDefIsEqual(virCPUDefPtr src,
         }
     }
 
+    if ((src->cache && !dst->cache) ||
+        (!src->cache && dst->cache) ||
+        (src->cache && dst->cache &&
+         (src->cache->level != dst->cache->level ||
+          src->cache->mode != dst->cache->mode))) {
+        virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                       "Target CPU cache does not match source");
+        goto cleanup;
+    }
+
     identical = true;
 
  cleanup:
-- 
2.12.2


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