From 511a4f5ab30a36fdaa48fb0d146cfc3f123b4f0a Mon Sep 17 00:00:00 2001
From: Izik Eidus <ieidus@redhat.com>
Date: Tue, 28 Jul 2009 19:14:26 +0300
Subject: [PATCH] kvm userspace: ksm support

rfc for ksm support to kvm userpsace.

Signed-off-by: Izik Eidus <ieidus@redhat.com>
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Fedora-patch: qemu-add-ksm-support.patch
---
 exec.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/exec.c b/exec.c
index 2134697..88bcff5 100644
--- a/exec.c
+++ b/exec.c
@@ -2578,6 +2578,9 @@ ram_addr_t qemu_ram_alloc(ram_addr_t size)
     new_block->host = file_ram_alloc(size, mem_path);
     if (!new_block->host) {
         new_block->host = qemu_vmalloc(size);
+#ifdef MADV_MERGEABLE
+        madvise(new_block->host, size, MADV_MERGEABLE);
+#endif
     }
     new_block->offset = last_ram_offset;
     new_block->length = size;
-- 
1.6.2.5