[ARM] Ensure head text is always placed at the start of kernel
Commit 86c0baf123e474b6eb404798926ecf62b426bf3a highlighted that we
may end up with the head text placed elsewhere in the kernel image.
Introduce a new .text.head section to contain the initial kernel
startup code, and always place this section at the beginning of the
kernel image.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index faf32de..e4156e7 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -23,11 +23,15 @@
#else
. = PAGE_OFFSET + TEXT_OFFSET;
#endif
- .init : { /* Init code and data */
+ .text.head : {
_stext = .;
- _sinittext = .;
+ _sinittext = .;
+ *(.text.head)
+ }
+
+ .init : { /* Init code and data */
*(.init.text)
- _einittext = .;
+ _einittext = .;
__proc_info_begin = .;
*(.proc.info.init)
__proc_info_end = .;