Commit ff4c85c0 authored by Brian Gerst's avatar Brian Gerst Committed by Thomas Gleixner
Browse files

x86/asm/32: Remove setup_once() 



After the removal of the stack canary segment setup code, this function
does nothing.

Signed-off-by: default avatarBrian Gerst <brgerst@gmail.com>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20221115184328.70874-1-brgerst@gmail.com
parent ee92fa03

arch/x86/kernel/head_32.S

+0 −22
Original line number Diff line number Diff line
@@ -260,16 +260,6 @@ SYM_FUNC_START(startup_32_smp) 
	/* Shift the stack pointer to a virtual address */

	addl $__PAGE_OFFSET, %esp



/*

 * start system 32-bit setup. We need to re-do some of the things done

 * in 16-bit mode for the "real" operations.

 */

	movl setup_once_ref,%eax

	andl %eax,%eax

	jz 1f				# Did we do this already?

	call *%eax

1:



/*

 * Check if it is 486

 */
@@ -331,18 +321,7 @@ SYM_FUNC_END(startup_32_smp) 


#include "verify_cpu.S"



/*

 *  setup_once

 *

 *  The setup work we only want to run on the BSP.

 *

 *  Warning: %esi is live across this function.

 */

__INIT

setup_once:

	andl $0,setup_once_ref	/* Once is enough, thanks */

	RET



SYM_FUNC_START(early_idt_handler_array)

	# 36(%esp) %eflags

	# 32(%esp) %cs
@@ -458,7 +437,6 @@ SYM_DATA(early_recursion_flag, .long 0) 
__REFDATA

	.align 4

SYM_DATA(initial_code,		.long i386_start_kernel)

SYM_DATA(setup_once_ref,	.long setup_once)



#ifdef CONFIG_PAGE_TABLE_ISOLATION

#define	PGD_ALIGN	(2 * PAGE_SIZE)