[Xen-changelog] [xen-4.1-testing] x86_64: fix error checking in arch_set_info_guest()

[Xen patchbot-4.1-testing <patchbot@xxxxxxx>]

# HG changeset patch
# User Tim Deegan <Tim.Deegan@xxxxxxxxxx>
# Date 1300122034 0
# Node ID 842aed720b84aba65b9dd3b11250f7116a3d81c1
# Parent  d4352abf34504d5d87e0e18ff8876098724b6bf1
x86_64: fix error checking in arch_set_info_guest()

Cannot specify user mode execution without specifying user-mode
pagetables.

Signed-off-by: Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Acked-by: Keir Fraser <keir@xxxxxxx>
xen-unstable changeset:   23034:c79aae866ad8
xen-unstable date:        Mon Mar 14 16:59:49 2011 +0000
---


diff -r d4352abf3450 -r 842aed720b84 xen/arch/x86/domain.c
--- a/xen/arch/x86/domain.c     Sat Mar 12 13:25:44 2011 +0000
+++ b/xen/arch/x86/domain.c     Mon Mar 14 17:00:34 2011 +0000
@@ -826,6 +826,11 @@
 
             v->arch.guest_table_user = pagetable_from_pfn(cr3_pfn);
         }
+        else if ( !(flags & VGCF_in_kernel) )
+        {
+            destroy_gdt(v);
+            return -EINVAL;
+        }
     }
     else
     {

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