linux-kernel - [tip: x86/cleanups] x86/asm/32: Remove setup

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Date:   Fri, 02 Dec 2022 13:14:43 -0000
From:   "tip-bot2 for Brian Gerst" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Brian Gerst <brgerst@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: x86/cleanups] x86/asm/32: Remove setup_once()

The following commit has been merged into the x86/cleanups branch of tip:

Commit-ID:     ff4c85c05333c6f24d3fe0a344c6dacd18a7ee49
Gitweb:        https://git.kernel.org/tip/ff4c85c05333c6f24d3fe0a344c6dacd18a7ee49
Author:        Brian Gerst <brgerst@...il.com>
AuthorDate:    Tue, 15 Nov 2022 13:43:28 -05:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Fri, 02 Dec 2022 14:06:34 +01:00

x86/asm/32: Remove setup_once()

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

Signed-off-by: Brian Gerst <brgerst@...il.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lore.kernel.org/r/20221115184328.70874-1-brgerst@gmail.com

---
 arch/x86/kernel/head_32.S | 22 ----------------------
 1 file changed, 22 deletions(-)

diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
index 9b7acc9..67c8ed9 100644
--- a/arch/x86/kernel/head_32.S
+++ b/arch/x86/kernel/head_32.S
@@ -261,16 +261,6 @@ SYM_FUNC_START(startup_32_smp)
 	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
  */
 	movb $4,X86			# at least 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)