[PATCH] x86/asm: Make more symbols local

From: Jiri Slaby
Date: Fri Oct 11 2019 - 05:22:17 EST


During the assembly cleanup patchset reveiew, I found more symbols which
are used only locally. So make them really local by prepending ".L" to
them. Namely:
* wakeup_idt is used only in realmode/rm/wakeup_asm.S.
* in_pm32 is used only in boot/pmjump.S.
* retint_user is used only in entry/entry_64.S, perhaps since commit
2ec67971facc ("x86/entry/64/compat: Remove most of the fast system
call machinery"), where entry_64_compat's caller was removed.

Drop GLOBAL from all of them too. I do not see more candidates in the
series.

Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: x86@xxxxxxxxxx
---
arch/x86/boot/pmjump.S | 6 +++---
arch/x86/entry/entry_64.S | 4 ++--
arch/x86/realmode/rm/wakeup_asm.S | 6 +++---
3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/x86/boot/pmjump.S b/arch/x86/boot/pmjump.S
index c22f9a7d1aeb..ea88d52eeac7 100644
--- a/arch/x86/boot/pmjump.S
+++ b/arch/x86/boot/pmjump.S
@@ -40,13 +40,13 @@ GLOBAL(protected_mode_jump)

# Transition to 32-bit mode
.byte 0x66, 0xea # ljmpl opcode
-2: .long in_pm32 # offset
+2: .long .Lin_pm32 # offset
.word __BOOT_CS # segment
ENDPROC(protected_mode_jump)

.code32
.section ".text32","ax"
-GLOBAL(in_pm32)
+.Lin_pm32:
# Set up data segments for flat 32-bit mode
movl %ecx, %ds
movl %ecx, %es
@@ -72,4 +72,4 @@ GLOBAL(in_pm32)
lldt %cx

jmpl *%eax # Jump to the 32-bit entrypoint
-ENDPROC(in_pm32)
+ENDPROC(.Lin_pm32)
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index b7c3ea4cb19d..86cbb22208c8 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -616,7 +616,7 @@ ret_from_intr:
jz retint_kernel

/* Interrupt came from user space */
-GLOBAL(retint_user)
+.Lretint_user:
mov %rsp,%rdi
call prepare_exit_to_usermode
TRACE_IRQS_IRETQ
@@ -1372,7 +1372,7 @@ ENTRY(error_exit)
TRACE_IRQS_OFF
testb $3, CS(%rsp)
jz retint_kernel
- jmp retint_user
+ jmp .Lretint_user
END(error_exit)

/*
diff --git a/arch/x86/realmode/rm/wakeup_asm.S b/arch/x86/realmode/rm/wakeup_asm.S
index 05ac9c17c811..dad6198f1a26 100644
--- a/arch/x86/realmode/rm/wakeup_asm.S
+++ b/arch/x86/realmode/rm/wakeup_asm.S
@@ -73,7 +73,7 @@ ENTRY(wakeup_start)
movw %ax, %fs
movw %ax, %gs

- lidtl wakeup_idt
+ lidtl .Lwakeup_idt

/* Clear the EFLAGS */
pushl $0
@@ -171,8 +171,8 @@ END(wakeup_gdt)

/* This is the standard real-mode IDT */
.balign 16
-GLOBAL(wakeup_idt)
+.Lwakeup_idt:
.word 0xffff /* limit */
.long 0 /* address */
.word 0
-END(wakeup_idt)
+END(.Lwakeup_idt)
--
2.23.0