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x86/asm/32: Remove setup_once()

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

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20221115184328.70874-1-brgerst@gmail.com
This commit is contained in:
Brian Gerst 2022-11-15 13:43:28 -05:00 committed by Thomas Gleixner
parent ee92fa0391
commit ff4c85c053
1 changed files with 0 additions and 22 deletions
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22
arch/x86/kernel/head_32.S
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@ -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)