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[6/7,V7] migration/ram: Add check and info message to nvdimm post copy.

Message ID 1528784900-7310-7-git-send-email-junyan.he@gmx.com (mailing list archive)
State New, archived
Headers show

Commit Message

junyan.he@gmx.com June 12, 2018, 6:28 a.m. UTC 
From: Junyan He <junyan.he@intel.com>

The nvdimm kind memory does not support post copy now.
We disable post copy if we have nvdimm memory and print some
log hint to user.

Signed-off-by: Junyan He <junyan.he@intel.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 migration/ram.c | 9 +++++++++
 1 file changed, 9 insertions(+)
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Patch

diff --git a/migration/ram.c b/migration/ram.c
index a500015..d9093a7 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -3419,6 +3419,15 @@  static int ram_load(QEMUFile *f, void *opaque, int version_id)
 
 static bool ram_has_postcopy(void *opaque)
 {
+    RAMBlock *rb;
+    RAMBLOCK_FOREACH(rb) {
+        if (ramblock_is_pmem(rb)) {
+            info_report("Block: %s, host: %p is a nvdimm memory, postcopy"
+                         "is not supported now!", rb->idstr, rb->host);
+            return false;
+        }
+    }
+
     return migrate_postcopy_ram();
 }