x86, vmlinux.lds: unify .text output sections

32 bit x86 had a dedicated .text.head output section,
whereas 64 bit had it all in a single output section.

In the unified version the dedicated .text.head output section
was kept to have full control over the head code.

32 bit:

- Moved definition of _stext to the linker script.
  The definition is located _after_ .text.page_aligned as this
  is what 32 bit did before.

The ALIGN(8) was introduced so we hit the exact same address
(on the tested config) before and after the move.

I assume that it is a bug that _stext did not cover the
.text.page_aligned section - if this is true it can be fixed
in a follow-up patch (and the ugly ALIGN() can be dropped).

[ Impact: 64-bit: cleanup, 32-bit: use the 64-bit linker script ]

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Tim Abbott <tabbott@MIT.EDU>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <1240991249-27117-5-git-send-email-sam@ravnborg.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 20 deletions

diff --git a/arch/x86/kernel/vmlinux_64.lds.S b/arch/x86/kernel/vmlinux_64.lds.S
index 2d7fa2016c31..b5d43670d809 100644
--- a/arch/x86/kernel/vmlinux_64.lds.S
+++ b/arch/x86/kernel/vmlinux_64.lds.S
@@ -1,23 +1,3 @@
-	/* Text and read-only data */
-	.text :  AT(ADDR(.text) - LOAD_OFFSET) {
-		_text = .;
-		/* First the code that has to be first for bootstrapping */
-		*(.text.head)
-		_stext = .;
-		/* Then the rest */
-		TEXT_TEXT
-		SCHED_TEXT
-		LOCK_TEXT
-		KPROBES_TEXT
-		IRQENTRY_TEXT
-		*(.fixup)
-		*(.gnu.warning)
-		/* End of text section */
-		_etext = .;
-	} :text = 0x9090
-
-	NOTES :text :note
-
 	/* Exception table */
 	. = ALIGN(16);
 	__ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {