x86/asm: Make some functions local labels

Boris suggests to make a local label (prepend ".L") to these functions
to eliminate them from the symbol table. These are functions with very
local names and really should not be visible anywhere.

Note that objtool won't see these functions anymore (to generate ORC
debug info). But all the functions are not annotated with ENDPROC, so
they won't have objtool's attention anyway.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Cao jin <caoj.fnst@cn.fujitsu.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steve Winslow <swinslow@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wei Huang <wei@redhat.com>
Cc: x86-ml <x86@kernel.org>
Cc: Xiaoyao Li <xiaoyao.li@linux.intel.com>
Link: https://lkml.kernel.org/r/20190906075550.23435-2-jslaby@suse.cz

3 files changed, 26 insertions, 26 deletions

diff --git a/arch/x86/lib/copy_user_64.S b/arch/x86/lib/copy_user_64.S
index 4fe1601dbc5d..86976b55ae74 100644
--- a/arch/x86/lib/copy_user_64.S
+++ b/arch/x86/lib/copy_user_64.S
@@ -33,7 +33,7 @@
 102:
 	.section .fixup,"ax"
 103:	addl %ecx,%edx			/* ecx is zerorest also */
-	jmp copy_user_handle_tail
+	jmp .Lcopy_user_handle_tail
 	.previous
 
 	_ASM_EXTABLE_UA(100b, 103b)
@@ -113,7 +113,7 @@ ENTRY(copy_user_generic_unrolled)
 40:	leal (%rdx,%rcx,8),%edx
 	jmp 60f
 50:	movl %ecx,%edx
-60:	jmp copy_user_handle_tail /* ecx is zerorest also */
+60:	jmp .Lcopy_user_handle_tail /* ecx is zerorest also */
 	.previous
 
 	_ASM_EXTABLE_UA(1b, 30b)
@@ -177,7 +177,7 @@ ENTRY(copy_user_generic_string)
 	.section .fixup,"ax"
 11:	leal (%rdx,%rcx,8),%ecx
 12:	movl %ecx,%edx		/* ecx is zerorest also */
-	jmp copy_user_handle_tail
+	jmp .Lcopy_user_handle_tail
 	.previous
 
 	_ASM_EXTABLE_UA(1b, 11b)
@@ -210,7 +210,7 @@ ENTRY(copy_user_enhanced_fast_string)
 
 	.section .fixup,"ax"
 12:	movl %ecx,%edx		/* ecx is zerorest also */
-	jmp copy_user_handle_tail
+	jmp .Lcopy_user_handle_tail
 	.previous
 
 	_ASM_EXTABLE_UA(1b, 12b)
@@ -231,7 +231,7 @@ EXPORT_SYMBOL(copy_user_enhanced_fast_string)
  * eax uncopied bytes or 0 if successful.
  */
 ALIGN;
-copy_user_handle_tail:
+.Lcopy_user_handle_tail:
 	movl %edx,%ecx
 1:	rep movsb
 2:	mov %ecx,%eax
@@ -239,7 +239,7 @@ copy_user_handle_tail:
 	ret
 
 	_ASM_EXTABLE_UA(1b, 2b)
-END(copy_user_handle_tail)
+END(.Lcopy_user_handle_tail)
 
 /*
  * copy_user_nocache - Uncached memory copy with exception handling
@@ -364,7 +364,7 @@ ENTRY(__copy_user_nocache)
 	movl %ecx,%edx
 .L_fixup_handle_tail:
 	sfence
-	jmp copy_user_handle_tail
+	jmp .Lcopy_user_handle_tail
 	.previous
 
 	_ASM_EXTABLE_UA(1b, .L_fixup_4x8b_copy)
diff --git a/arch/x86/lib/getuser.S b/arch/x86/lib/getuser.S
index 304f958c27b2..9578eb88fc87 100644
--- a/arch/x86/lib/getuser.S
+++ b/arch/x86/lib/getuser.S
@@ -115,7 +115,7 @@ ENDPROC(__get_user_8)
 EXPORT_SYMBOL(__get_user_8)
 
 
-bad_get_user_clac:
+.Lbad_get_user_clac:
 	ASM_CLAC
 bad_get_user:
 	xor %edx,%edx
@@ -123,7 +123,7 @@ bad_get_user:
 	ret
 
 #ifdef CONFIG_X86_32
-bad_get_user_8_clac:
+.Lbad_get_user_8_clac:
 	ASM_CLAC
 bad_get_user_8:
 	xor %edx,%edx
@@ -132,12 +132,12 @@ bad_get_user_8:
 	ret
 #endif
 
-	_ASM_EXTABLE_UA(1b, bad_get_user_clac)
-	_ASM_EXTABLE_UA(2b, bad_get_user_clac)
-	_ASM_EXTABLE_UA(3b, bad_get_user_clac)
+	_ASM_EXTABLE_UA(1b, .Lbad_get_user_clac)
+	_ASM_EXTABLE_UA(2b, .Lbad_get_user_clac)
+	_ASM_EXTABLE_UA(3b, .Lbad_get_user_clac)
 #ifdef CONFIG_X86_64
-	_ASM_EXTABLE_UA(4b, bad_get_user_clac)
+	_ASM_EXTABLE_UA(4b, .Lbad_get_user_clac)
 #else
-	_ASM_EXTABLE_UA(4b, bad_get_user_8_clac)
-	_ASM_EXTABLE_UA(5b, bad_get_user_8_clac)
+	_ASM_EXTABLE_UA(4b, .Lbad_get_user_8_clac)
+	_ASM_EXTABLE_UA(5b, .Lbad_get_user_8_clac)
 #endif
diff --git a/arch/x86/lib/putuser.S b/arch/x86/lib/putuser.S
index 14bf78341d3c..126dd6a9ec9b 100644
--- a/arch/x86/lib/putuser.S
+++ b/arch/x86/lib/putuser.S
@@ -37,7 +37,7 @@
 ENTRY(__put_user_1)
 	ENTER
 	cmp TASK_addr_limit(%_ASM_BX),%_ASM_CX
-	jae bad_put_user
+	jae .Lbad_put_user
 	ASM_STAC
 1:	movb %al,(%_ASM_CX)
 	xor %eax,%eax
@@ -51,7 +51,7 @@ ENTRY(__put_user_2)
 	mov TASK_addr_limit(%_ASM_BX),%_ASM_BX
 	sub $1,%_ASM_BX
 	cmp %_ASM_BX,%_ASM_CX
-	jae bad_put_user
+	jae .Lbad_put_user
 	ASM_STAC
 2:	movw %ax,(%_ASM_CX)
 	xor %eax,%eax
@@ -65,7 +65,7 @@ ENTRY(__put_user_4)
 	mov TASK_addr_limit(%_ASM_BX),%_ASM_BX
 	sub $3,%_ASM_BX
 	cmp %_ASM_BX,%_ASM_CX
-	jae bad_put_user
+	jae .Lbad_put_user
 	ASM_STAC
 3:	movl %eax,(%_ASM_CX)
 	xor %eax,%eax
@@ -79,7 +79,7 @@ ENTRY(__put_user_8)
 	mov TASK_addr_limit(%_ASM_BX),%_ASM_BX
 	sub $7,%_ASM_BX
 	cmp %_ASM_BX,%_ASM_CX
-	jae bad_put_user
+	jae .Lbad_put_user
 	ASM_STAC
 4:	mov %_ASM_AX,(%_ASM_CX)
 #ifdef CONFIG_X86_32
@@ -91,16 +91,16 @@ ENTRY(__put_user_8)
 ENDPROC(__put_user_8)
 EXPORT_SYMBOL(__put_user_8)
 
-bad_put_user_clac:
+.Lbad_put_user_clac:
 	ASM_CLAC
-bad_put_user:
+.Lbad_put_user:
 	movl $-EFAULT,%eax
 	RET
 
-	_ASM_EXTABLE_UA(1b, bad_put_user_clac)
-	_ASM_EXTABLE_UA(2b, bad_put_user_clac)
-	_ASM_EXTABLE_UA(3b, bad_put_user_clac)
-	_ASM_EXTABLE_UA(4b, bad_put_user_clac)
+	_ASM_EXTABLE_UA(1b, .Lbad_put_user_clac)
+	_ASM_EXTABLE_UA(2b, .Lbad_put_user_clac)
+	_ASM_EXTABLE_UA(3b, .Lbad_put_user_clac)
+	_ASM_EXTABLE_UA(4b, .Lbad_put_user_clac)
 #ifdef CONFIG_X86_32
-	_ASM_EXTABLE_UA(5b, bad_put_user_clac)
+	_ASM_EXTABLE_UA(5b, .Lbad_put_user_clac)
 #endif