lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

x86, vmlinux.lds: unify .text output sections

Browse Source 
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>
This commit is contained in:
Sam Ravnborg
2009-04-29 09:47:21 +02:00
committed by Ingo Molnar
parent 444e0ae483
commit dfc20895d9
4 changed files with 31 additions and 51 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
arch/x86/kernel/head_32.S
View File

@ -608,13 +608,6 @@ ignore_int:
ENTRY(initial_code)
.long i386_start_kernel
.section .text
/*
* Real beginning of normal "text" segment
*/
ENTRY(stext)
ENTRY(_stext)
/*
* BSS section
*/