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

2 files changed, 11 insertions, 11 deletions

diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S
index 37380c0d5999..5e30eaaf8576 100644
--- a/arch/x86/boot/compressed/head_32.S
+++ b/arch/x86/boot/compressed/head_32.S
@@ -140,7 +140,7 @@ ENTRY(startup_32)
 /*
  * Jump to the relocated address.
  */
-	leal	relocated(%ebx), %eax
+	leal	.Lrelocated(%ebx), %eax
 	jmp	*%eax
 ENDPROC(startup_32)
 
@@ -209,7 +209,7 @@ ENDPROC(efi32_stub_entry)
 #endif
 
 	.text
-relocated:
+.Lrelocated:
 
 /*
  * Clear BSS (stack is currently empty)
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
index 6233ae35d0d9..d98cd483377e 100644
--- a/arch/x86/boot/compressed/head_64.S
+++ b/arch/x86/boot/compressed/head_64.S
@@ -87,7 +87,7 @@ ENTRY(startup_32)
 
 	call	verify_cpu
 	testl	%eax, %eax
-	jnz	no_longmode
+	jnz	.Lno_longmode
 
 /*
  * Compute the delta between where we were compiled to run at
@@ -322,7 +322,7 @@ ENTRY(startup_64)
 1:	popq	%rdi
 	subq	$1b, %rdi
 
-	call	adjust_got
+	call	.Ladjust_got
 
 	/*
 	 * At this point we are in long mode with 4-level paging enabled,
@@ -421,7 +421,7 @@ trampoline_return:
 
 	/* The new adjustment is the relocation address */
 	movq	%rbx, %rdi
-	call	adjust_got
+	call	.Ladjust_got
 
 /*
  * Copy the compressed kernel to the end of our buffer
@@ -440,7 +440,7 @@ trampoline_return:
 /*
  * Jump to the relocated address.
  */
-	leaq	relocated(%rbx), %rax
+	leaq	.Lrelocated(%rbx), %rax
 	jmp	*%rax
 
 #ifdef CONFIG_EFI_STUB
@@ -511,7 +511,7 @@ ENDPROC(efi64_stub_entry)
 #endif
 
 	.text
-relocated:
+.Lrelocated:
 
 /*
  * Clear BSS (stack is currently empty)
@@ -548,7 +548,7 @@ relocated:
  * first time we touch GOT).
  * RDI is the new adjustment to apply.
  */
-adjust_got:
+.Ladjust_got:
 	/* Walk through the GOT adding the address to the entries */
 	leaq	_got(%rip), %rdx
 	leaq	_egot(%rip), %rcx
@@ -622,7 +622,7 @@ ENTRY(trampoline_32bit_src)
 	movl	%eax, %cr4
 
 	/* Calculate address of paging_enabled() once we are executing in the trampoline */
-	leal	paging_enabled - trampoline_32bit_src + TRAMPOLINE_32BIT_CODE_OFFSET(%ecx), %eax
+	leal	.Lpaging_enabled - trampoline_32bit_src + TRAMPOLINE_32BIT_CODE_OFFSET(%ecx), %eax
 
 	/* Prepare the stack for far return to Long Mode */
 	pushl	$__KERNEL_CS
@@ -635,7 +635,7 @@ ENTRY(trampoline_32bit_src)
 	lret
 
 	.code64
-paging_enabled:
+.Lpaging_enabled:
 	/* Return from the trampoline */
 	jmp	*%rdi
 
@@ -647,7 +647,7 @@ paging_enabled:
 	.org	trampoline_32bit_src + TRAMPOLINE_32BIT_CODE_SIZE
 
 	.code32
-no_longmode:
+.Lno_longmode:
 	/* This isn't an x86-64 CPU, so hang intentionally, we cannot continue */
 1:
 	hlt