x86/hvm: Correct error message in check_segment()

The error message is wrong (given AMD's older interpretation of what a NUL
segment should contain, attribute wise), and actively unhelpful because you
only get it in response to a hypercall where the one piece of information you
cannot provide is the segment selector.

Fix the message to talk about segment attributes, rather than the selector.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>

diff --git a/xen/arch/x86/hvm/domain.c b/xen/arch/x86/hvm/domain.c
index 0ce132b308cd794013048cc622ee2df609e257df..10e30175a1b6865d4924d08e5baf357794342cb7 100644 (file)
--- a/xen/arch/x86/hvm/domain.c
+++ b/xen/arch/x86/hvm/domain.c
@@ -39,7 +39,7 @@ static int check_segment(struct segment_register *reg, enum x86_segment seg)
     {
         if ( seg != x86_seg_ds && seg != x86_seg_es )
         {
-            gprintk(XENLOG_ERR, "Null selector provided for CS, SS or TR\n");
+            gprintk(XENLOG_ERR, "Null segment attributes for CS, SS or TR\n");
             return -EINVAL;
         }
         return 0;