Commit 48bfdb9d authored Jan 07, 2020 by Arvind Sankar Committed by Borislav Petkov Feb 12, 2020

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 <nivedita@alum.mit.edu>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200107194436.2166846-2-nivedita@alum.mit.edu

parent bb6d3fb3

arch/x86/boot/compressed/head_64.S

+1 −3

Original line number	Diff line number	Diff line
		@@ -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

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