x86/asm: Remove the last GLOBAL user and remove the macro

Convert the remaining 32bit users and remove the GLOBAL macro finally.
In particular, this means to use SYM_ENTRY for the singlestepping hack
region.

Exclude the global definition of GLOBAL from x86 too.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: linux-arch@vger.kernel.org
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will@kernel.org>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20191011115108.12392-20-jslaby@suse.cz

arch/x86/entry/entry_32.S

@@ -832,7 +832,7 @@ SYM_INNER_LABEL_ALIGN(resume_userspace, SYM_L_LOCAL)
 	jmp	restore_all
 SYM_CODE_END(ret_from_exception)
 
-GLOBAL(__begin_SYSENTER_singlestep_region)
+SYM_ENTRY(__begin_SYSENTER_singlestep_region, SYM_L_GLOBAL, SYM_A_NONE)
 /*
  * All code from here through __end_SYSENTER_singlestep_region is subject
  * to being single-stepped if a user program sets TF and executes SYSENTER.
@@ -1011,7 +1011,7 @@ ENTRY(entry_SYSENTER_32)
 	pushl	$X86_EFLAGS_FIXED
 	popfl
 	jmp	.Lsysenter_flags_fixed
-GLOBAL(__end_SYSENTER_singlestep_region)
+SYM_ENTRY(__end_SYSENTER_singlestep_region, SYM_L_GLOBAL, SYM_A_NONE)
 ENDPROC(entry_SYSENTER_32)
 
 /*

arch/x86/include/asm/linkage.h

@@ -13,14 +13,6 @@
 
 #ifdef __ASSEMBLY__
 
-/*
- * GLOBAL is DEPRECATED
- *
- * use SYM_DATA_START, SYM_FUNC_START, SYM_INNER_LABEL, SYM_CODE_START, or
- * similar
- */
-#define GLOBAL(name)	SYM_ENTRY(name, SYM_L_GLOBAL, SYM_A_NONE)
-
 #if defined(CONFIG_X86_64) || defined(CONFIG_X86_ALIGNMENT_16)
 #define __ALIGN		.p2align 4, 0x90
 #define __ALIGN_STR	__stringify(__ALIGN)

include/linux/linkage.h

@@ -105,12 +105,14 @@
 
 /* === DEPRECATED annotations === */
 
+#ifndef CONFIG_X86
 #ifndef GLOBAL
 /* deprecated, use SYM_DATA*, SYM_ENTRY, or similar */
 #define GLOBAL(name) \
 	.globl name ASM_NL \
 	name:
 #endif
+#endif
 
 #ifndef ENTRY
 /* deprecated, use SYM_FUNC_START */