From 4251549eca8b113b508f6bf6a7aaca2541acda61 Mon Sep 17 00:00:00 2001
From: "plai@redhat.com" <plai@redhat.com>
Date: Fri, 31 Aug 2018 16:25:58 +0200
Subject: [PATCH 16/29] migration/ram: Add check and info message to nvdimm
 post copy.

RH-Author: plai@redhat.com
Message-id: <1535732759-22481-9-git-send-email-plai@redhat.com>
Patchwork-id: 82009
O-Subject: [RHEL7.6 PATCH BZ 1539280 8/9] migration/ram: Add check and info message to nvdimm post copy.
Bugzilla: 1539280
RH-Acked-by: Michael S. Tsirkin <mst@redhat.com>
RH-Acked-by: Pankaj Gupta <pagupta@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>

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>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 469dd51bc664979f159d47885997d482991394b8)
Signed-off-by: Paul Lai <plai@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 migration/ram.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/migration/ram.c b/migration/ram.c
index 04b5df5..f850fd0 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -3120,6 +3120,15 @@ static int ram_load(QEMUFile *f, void *opaque, int version_id)
 
 static bool ram_has_postcopy(void *opaque)
 {
+    RAMBlock *rb;
+    RAMBLOCK_FOREACH_MIGRATABLE(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();
 }
 
-- 
1.8.3.1