diff options
| author | Sam Ravnborg <sam@ravnborg.org> | 2009-04-29 09:47:23 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-29 10:20:32 +0200 |
| commit | 1f6397bac55040cd520d9eaf299e155a7aa01d5f (patch) | |
| tree | 991bccc160d0e5e1825da18b4ca899d1e5f7b14f /arch/x86/kernel/vmlinux_64.lds.S | |
| parent | 448bc3ab0d03e77fee8e4264de0d001fc87bc164 (diff) | |
| download | lwn-1f6397bac55040cd520d9eaf299e155a7aa01d5f.tar.gz lwn-1f6397bac55040cd520d9eaf299e155a7aa01d5f.zip | |
x86, vmlinux.lds: unify data output sections
For 64 bit the following functional changes are introduced:
- .data.page_aligned has moved
- .data.cacheline_aligned has moved
- .data.read_mostly has moved
- ALIGN() moved out of output section for .data.cacheline_aligned
- ALIGN() moved out of output section for .data.page_aligned
Notice that 32 bit and 64 bit has different location of _edata.
.data_nosave is 32 bit only as 64 bit is special due to PERCPU.
[ Impact: 32-bit: cleanup, 64-bit: use 32-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: <1240991249-27117-7-git-send-email-sam@ravnborg.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/vmlinux_64.lds.S')
| -rw-r--r-- | arch/x86/kernel/vmlinux_64.lds.S | 28 |
1 files changed, 0 insertions, 28 deletions
diff --git a/arch/x86/kernel/vmlinux_64.lds.S b/arch/x86/kernel/vmlinux_64.lds.S index 641f3f991a01..826270147b5a 100644 --- a/arch/x86/kernel/vmlinux_64.lds.S +++ b/arch/x86/kernel/vmlinux_64.lds.S @@ -1,26 +1,3 @@ - /* Align data segment to page size boundary */ - . = ALIGN(PAGE_SIZE); - /* Data */ - .data : AT(ADDR(.data) - LOAD_OFFSET) { - DATA_DATA - CONSTRUCTORS - /* End of data section */ - _edata = .; - } :data - - - .data.cacheline_aligned : - AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) { - . = ALIGN(PAGE_SIZE); - . = ALIGN(CONFIG_X86_L1_CACHE_BYTES); - *(.data.cacheline_aligned) - } - - . = ALIGN(CONFIG_X86_INTERNODE_CACHE_BYTES); - .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) { - *(.data.read_mostly) - } - #define VSYSCALL_ADDR (-10*1024*1024) #define VSYSCALL_PHYS_ADDR ((LOADADDR(.data.read_mostly) + \ SIZEOF(.data.read_mostly) + 4095) & ~(4095)) @@ -95,11 +72,6 @@ *(.data.init_task) } :data.init - .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) { - . = ALIGN(PAGE_SIZE); - *(.data.page_aligned) - } - .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) { /* might get freed after init */ . = ALIGN(PAGE_SIZE); |