x86/boot/compressed/64: Use LEA to initialize boot stack pointer

It's shorter, and it's what is used in every other place, so make it consistent. Signed-off-by: Arvind Sankar <[email protected]> Signed-off-by: Borislav Petkov <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
laijs · Feb 12, 2020 · 48bfdb9 · 48bfdb9
1 parent bb6d3fb
commit 48bfdb9
Showing 1 changed file with 1 addition and 3 deletions.
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
@@ -81,9 +81,7 @@ SYM_FUNC_START(startup_32)
 	subl	$1b, %ebp
 
 /* setup a stack and make sure cpu supports long mode. */
-	movl	$boot_stack_end, %eax
-	addl	%ebp, %eax
-	movl	%eax, %esp
+	leal	boot_stack_end(%ebp), %esp
 
 	call	verify_cpu
 	testl	%eax, %eax