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

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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
This commit is contained in:
Arvind Sankar 2020-01-07 14:44:35 -05:00 committed by Borislav Petkov
parent bb6d3fb354
commit 48bfdb9def
1 changed files with 1 additions and 3 deletions
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4
arch/x86/boot/compressed/head_64.S
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@ -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