From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Lively <dlively@virtualiron.com>
Subject: [PATCH] [HVM] fix 64-bit hvm guest migration
Date: Wed, 10 Oct 2007 17:14:18 -0400
Message-ID: <470D40AA.9010700@virtualiron.com>
Mime-Version: 1.0
Content-Type: multipart/mixed; boundary="------------090301050006090904090605"
Return-path: <xen-devel-bounces@lists.xensource.com>
List-Unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: xen-devel@lists.xensource.com
List-Id: xen-devel@lists.xenproject.org

This is a multi-part message in MIME format.
--------------090301050006090904090605
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

Hi -
  We (well, Robert) just (earlier today) noticed we couldn't migrate 
64-bit guests with the 3.1.1 and unstable hypervisors.  The culprit was 
a too-strict test on guest EFER bits, trivially fixed by the following 
patch, which applies to both unstable and 3.1.1.  Sorry we didn't catch 
this before today ...

Dave

The sanity check for ctxt.msr_efer used to fail when EFER_LMA was set.
This prevent migration of 64-bit guests.

Signed-off-by: David Lively <dlively@virtualiron.com>
Signed-off-by: Robert Phillips <rphillips@virtualiron.com>


--------------090301050006090904090605
Content-Type: text/x-patch;
 name="xen-hvm-load-efer-test.patch"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
 filename="xen-hvm-load-efer-test.patch"

diff -r e56402b6e155 xen/arch/x86/hvm/hvm.c
--- a/xen/arch/x86/hvm/hvm.c	Wed Oct 10 11:37:02 2007 -0400
+++ b/xen/arch/x86/hvm/hvm.c	Wed Oct 10 11:37:02 2007 -0400
@@ -389,8 +389,7 @@ static int hvm_load_cpu_ctxt(struct doma
                  ctxt.msr_efer);
         return -EINVAL;
     }
-
-    if ( (ctxt.msr_efer & ~(EFER_LME | EFER_NX | EFER_SCE)) ||
+    if ( (ctxt.msr_efer & ~(EFER_LME | EFER_LMA | EFER_NX | EFER_SCE)) ||
          ((sizeof(long) != 8) && (ctxt.msr_efer & EFER_LME)) ||
          (!cpu_has_nx && (ctxt.msr_efer & EFER_NX)) ||
          (!cpu_has_syscall && (ctxt.msr_efer & EFER_SCE)) ||

--------------090301050006090904090605
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel

--------------090301050006090904090605--