Commit 0e83815b authored Jul 27, 2009 by Robert Richter Committed by H. Peter Anvin Jul 27, 2009

x86: fix section mismatch for i386 init code



Startup code for i386 in arch/x86/kernel/head_32.S is using the
reference variable initial_code that is located in the .cpuinit.data
section. If CONFIG_HOTPLUG_CPU is enabled, startup code is not in an
init section and can be called later too. In this case the reference
initial_code must be kept too. This patch fixes this. See below for
the section mismatch warning.

 WARNING: vmlinux.o(.cpuinit.data+0x0): Section mismatch in reference
 from the variable initial_code to the function
 .init.text:i386_start_kernel()
 The variable __cpuinitdata initial_code references
 a function __init i386_start_kernel().
 If i386_start_kernel is only used by initial_code then
 annotate i386_start_kernel with a matching annotation.

Signed-off-by: Robert Richter <robert.richter@amd.com>
LKML-Reference: <1248716632-26844-1-git-send-email-robert.richter@amd.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

parent e00b95de

arch/x86/kernel/head_32.S

+5 −1

Original line number	Diff line number	Diff line
		@@ -602,7 +602,11 @@ ignore_int:
		#endif
		iret

		.section .cpuinit.data,"wa"
		#ifndef CONFIG_HOTPLUG_CPU
		__CPUINITDATA
		#else
		__REFDATA
		#endif
		.align 4
		ENTRY(initial_code)
		.long i386_start_kernel