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

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Tim Deegan <Tim.Deegan@xxxxxxxxxx>
# Date 1300121989 0
# Node ID c79aae866ad8397e129b5801f8f97f604743a7c2
# Parent  84bacd800bf88e37434d49547ad8224be46e2a52
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>
---


diff -r 84bacd800bf8 -r c79aae866ad8 xen/arch/x86/domain.c
--- a/xen/arch/x86/domain.c     Sat Mar 12 13:20:51 2011 +0000
+++ b/xen/arch/x86/domain.c     Mon Mar 14 16:59:49 2011 +0000
@@ -820,6 +820,11 @@
 
             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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