[Xen-changelog] [xen-unstable] xend: Auto-balloon a couple megabytes before creating an HVM domain as

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Date 1177683754 -3600
# Node ID 4789f3b2e1b9f4b3baa2bca1fd1f9bcfdca28c05
# Parent  1634486b2a5ca28e0463218f6e8d92a3a6c1259a
xend: Auto-balloon a couple megabytes before creating an HVM domain as
Xen will allocate 1MB for shadow memory immediately.
Suggested by Daniel Berrange.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
---
 tools/python/xen/xend/XendDomainInfo.py |    3 +++
 1 files changed, 3 insertions(+)

diff -r 1634486b2a5c -r 4789f3b2e1b9 tools/python/xen/xend/XendDomainInfo.py
--- a/tools/python/xen/xend/XendDomainInfo.py   Fri Apr 27 15:12:48 2007 +0100
+++ b/tools/python/xen/xend/XendDomainInfo.py   Fri Apr 27 15:22:34 2007 +0100
@@ -1419,6 +1419,9 @@ class XendDomainInfo:
                 raise VmError("HVM guest support is unavailable: is VT/AMD-V "
                               "supported by your CPU and enabled in your "
                               "BIOS?")
+            # Hack to pre-reserve some memory for HVM setup.
+            # Needed because Xen allocates 1MB by default immediately.
+            balloon.free(2*1024) # 2MB should be plenty
 
         self.domid = xc.domain_create(
             domid = 0,

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