[xen staging] x86: correct comment about alternatives ordering

[patchbot@xxxxxxx]

commit 9a5071e80be67e7a480ef9ba9680af6754198cdb
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Thu Apr 29 16:04:35 2021 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Apr 29 16:04:35 2021 +0200

    x86: correct comment about alternatives ordering
    
    Unlike Linux, Xen has never (so far) used alternatives patching for
    memcpy() or memset(), even less such utilizing multiple alternatives.
    Correct the Linux-inherited comment to match reality.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 xen/arch/x86/alternative.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/xen/arch/x86/alternative.c b/xen/arch/x86/alternative.c
index 004e9ede25..1cb531c9df 100644
--- a/xen/arch/x86/alternative.c
+++ b/xen/arch/x86/alternative.c
@@ -194,8 +194,7 @@ static void init_or_livepatch _apply_alternatives(struct 
alt_instr *start,
     /*
      * The scan order should be from start to end. A later scanned
      * alternative code can overwrite a previous scanned alternative code.
-     * Some kernel functions (e.g. memcpy, memset, etc) use this order to
-     * patch code.
+     * Some code (e.g. ALTERNATIVE_2()) relies on this order of patching.
      *
      * So be careful if you want to change the scan order to any other
      * order.
--
generated by git-patchbot for /home/xen/git/xen.git#staging