[PATCH 3/5] libxl: Specify the target ram size to Qemu (new) when calling it

[anthony.perard@citrix.com]

From: Anthony PERARD <anthony.perard@citrix.com>

This patch adds target_ram in device_model_info structure, to be used in
libxl_build_device_model_args_new. Qemu upstream needs to know about it.
---
 tools/libxl/libxl.c      |    4 ++++
 tools/libxl/libxl.idl    |    1 +
 tools/libxl/xl_cmdimpl.c |    1 +
 3 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index 0f6e632..0ddeac0 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -1374,6 +1374,10 @@ static char ** libxl_build_device_model_args_new(libxl__gc *gc,
     else
         flexarray_set(dm_args, num++, "xenfv");
 
+    /* RAM Size */
+    flexarray_set(dm_args, num++, "-m");
+    flexarray_set(dm_args, num++, libxl__sprintf(gc, "%d", info->target_ram));
+
     disks = libxl_device_disk_list(libxl__gc_owner(gc), info->domid, &nb);
     for (i; i < nb; i++) {
         if ( disks[i].is_cdrom ) {
diff --git a/tools/libxl/libxl.idl b/tools/libxl/libxl.idl
index 8dd7749..89694b1 100644
--- a/tools/libxl/libxl.idl
+++ b/tools/libxl/libxl.idl
@@ -139,6 +139,7 @@ libxl_device_model_info = Struct("device_model_info",[
     ("device_model",     string),
     ("saved_state",      string),
     ("type",             libxl_qemu_machine_type),
+    ("target_ram",       uint32),
     ("videoram",         integer,           False, "size of the videoram in MB"),
     ("stdvga",           bool,              False, "stdvga enabled or disabled"),
     ("vnc",              bool,              False, "vnc enabled or disabled"),
diff --git a/tools/libxl/xl_cmdimpl.c b/tools/libxl/xl_cmdimpl.c
index 5555319..897c5bc 100644
--- a/tools/libxl/xl_cmdimpl.c
+++ b/tools/libxl/xl_cmdimpl.c
@@ -359,6 +359,7 @@ static void init_dm_info(libxl_device_model_info *dm_info,
 
     dm_info->dom_name = strdup(c_info->name);
     dm_info->device_model = strdup("qemu-dm");
+    dm_info->target_ram = b_info->target_memkb / 1024;
     dm_info->videoram = b_info->video_memkb / 1024;
     dm_info->apic = b_info->u.hvm.apic;
     dm_info->vcpus = b_info->max_vcpus;
-- 
1.7.1