[xen staging] x86/thunk: Don't opencode TSX instructions in clear_bhb_tsx()

[patchbot@xxxxxxx]

commit 3f182352c50cc3df17adf25d15ef9b96b1e7cb13
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Thu May 1 19:05:53 2025 +0100
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Fri May 2 14:12:10 2025 +0100

    x86/thunk: Don't opencode TSX instructions in clear_bhb_tsx()
    
    The new toolchain baseline understands the RTM instructions.
    
    No functional change.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/arch/x86/bhb-thunk.S | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/arch/x86/bhb-thunk.S b/xen/arch/x86/bhb-thunk.S
index 678c00c5d0..f5ac41834b 100644
--- a/xen/arch/x86/bhb-thunk.S
+++ b/xen/arch/x86/bhb-thunk.S
@@ -19,8 +19,8 @@
  * disabled for e.g. TAA mitigation reasons.
  */
 FUNC(clear_bhb_tsx)
-        .byte 0xc7, 0xf8; .long 1f - 0f /* xbegin 1f */
-0:      .byte 0xc6, 0xf8, 0             /* xabort $0 */
+        xbegin  1f
+        xabort  $0
         int3
 1:
         ret
--
generated by git-patchbot for /home/xen/git/xen.git#staging