From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Date: Wed, 22 Sep 2010 16:40:44 +0000 (+0100)
Subject: libxl: introduce the concept of dom0 minimum memory
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~11442
X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/%22bookmarks://%22Dat/%22http:/www.example.com/cgi/%22https:/%22bookmarks:/%22Dat?a=commitdiff_plain;h=98256664456f6d824fd0c3c8ed69eeca267e5ba8;p=xen.git

libxl: introduce the concept of dom0 minimum memory

Introduce a minimum value for the memory assigned to dom0.

[fixed up for conflicts with libxl__ naming policy changes -iwj]

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
---

diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index 8687441f1b..83830d1dbd 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -2916,6 +2916,12 @@ retry_transaction:
         abort = 1;
         goto out;
     }
+    if (!domid && new_target_memkb < LIBXL_MIN_DOM0_MEM) {
+        LIBXL__LOG(ctx, LIBXL__LOG_ERROR,
+                "new target for dom0 is below the minimum threshold\n");
+        abort = 1;
+        goto out;
+    }
 
     if (relative)
         new_target_memkb = current_target_memkb + target_memkb;
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index 97e92965f6..180fdcd1ea 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -43,6 +43,7 @@
 #define LIBXL_MAXMEM_CONSTANT 1024
 #define LIBXL_PV_EXTRA_MEMORY 1024
 #define LIBXL_HVM_EXTRA_MEMORY 2048
+#define LIBXL_MIN_DOM0_MEM (128*1024)
 #define QEMU_SIGNATURE "QemuDeviceModelRecord"
 
 #define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))