From: Avi Kivity <avi@redhat.com>
Date: Wed, 21 Dec 2011 11:22:16 +0000 (+0200)
Subject: Sort RAMBlocks by ID for migration, not by ram_addr
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=8fec98b41b0535ea4823c59ee9bf7d768feac74a;p=qemu-xen-4.4-testing.git

Sort RAMBlocks by ID for migration, not by ram_addr

ram_addr is (a) unstable (b) going away.  Sort by idstr instead.

Commit b2e0a138e initially introduced the sorting for the purpose
of improving debuggability.  After this patch, the order is still
stable, but perhaps less usable by a human.

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---

diff --git a/arch_init.c b/arch_init.c
index c73fa1b2c..5df84048a 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -217,12 +217,8 @@ static int block_compar(const void *a, const void *b)
 {
     RAMBlock * const *ablock = a;
     RAMBlock * const *bblock = b;
-    if ((*ablock)->offset < (*bblock)->offset) {
-        return -1;
-    } else if ((*ablock)->offset > (*bblock)->offset) {
-        return 1;
-    }
-    return 0;
+
+    return strcmp((*ablock)->idstr, (*bblock)->idstr);
 }
 
 static void sort_ram_list(void)