x86: relocate_kernel_32.S - clear register in more elegant way

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/relocate_kernel_32.S b/arch/x86/kernel/relocate_kernel_32.S
index ec4e6a0..fbc4fad 100644 (file)
--- a/arch/x86/kernel/relocate_kernel_32.S
+++ b/arch/x86/kernel/relocate_kernel_32.S
@@ -185,8 +185,7 @@ identity_mapped:
        /* Set cr4 to a known state:
         * Setting everything to zero seems safe.
         */
-       movl    %cr4, %eax
-       andl    $0, %eax
+       xorl    %eax, %eax
        movl    %eax, %cr4
 
        jmp 1f