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120b114237
linux/arch/x86_64/kernel
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Vivek Goyal 120b114237 [PATCH] Re-positioning the bss segment 
[AK: This apparently broke some systems, but we need it to fix
a compile problem with old binutils and in theory the patch
is correct. So let's trying reenabling it again.]

o Currently bss segment is being placed somewhere in the middle (after .data)
  section and after bss lots of init section and data sections are coming.
  Is it intentional?

o One side affect of placing bss in the middle is that objcopy keeps the
  bss in raw binary image (vmlinux.bin) hence unnecessarily increasing
  the size of raw binary image. (In my case ~600K). It also increases
  the size of generated bzImage, though the increase is very small
  (896 bytes), probably a very high compression ratio for stream
  of zeros.

o This patch moves the bss at the end hence reducing the size of
  bzImage by 896 bytes and size of vmlinux.bin by 600K.

o This change benefits in the context of relocatable kernel patches. If
  kernel bss is not part of compressed data (vmlinux.bin) then it does
  not have to be decompressed and this area can be used by the decompressor
  for its execution hence keeping the memory requirements bounded and
  decompressor code does not stomp over any other data loaded beyond
  kernel image (As might be the case with bootloaders like kexec).

Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-30 01:47:55 +02:00
..
acpi Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
cpufreq Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
aperture.c [PATCH] x86: Allow disabling early pci scans with pci=noearly or disallowing conf1 2006-09-26 10:52:41 +02:00
apic.c [PATCH] insert IOAPIC(s) and Local APIC into resource map 2006-09-26 10:52:39 +02:00
asm-offsets.c [CRYPTO] all: Pass tfm instead of ctx to algorithms 2006-06-26 17:34:39 +10:00
audit.c [PATCH] audit: AUDIT_PERM support 2006-09-11 13:32:30 -04:00
crash_dump.c [PATCH] kdump: read previous kernel's memory 2006-01-10 08:01:28 -08:00
crash.c [PATCH] Remove all ifdefs for local/io apic 2006-09-26 10:52:29 +02:00
e820.c [PATCH] Have x86_64 use add_active_range() and free_area_init_nodes 2006-09-27 08:26:11 -07:00
early_printk.c [PATCH] Convert x86-64 to early param 2006-09-26 10:52:32 +02:00
early-quirks.c [PATCH] x86: Allow disabling early pci scans with pci=noearly or disallowing conf1 2006-09-26 10:52:41 +02:00
entry.S [PATCH] Don't leak NT bit into next task 2006-09-26 10:52:41 +02:00
functionlist [NET]: make skb_release_data() static 2006-06-29 16:58:30 -07:00
genapic_cluster.c [PATCH] remove int_delivery_dest 2006-09-26 10:52:31 +02:00
genapic_flat.c [PATCH] Replace local_save_flags+local_irq_disable with 2006-09-26 10:52:33 +02:00
genapic.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
head64.c [PATCH] Remove need for early lockdep init 2006-09-26 10:52:32 +02:00
head.S [PATCH] Reload CS when startup_64 is used. 2006-09-26 10:52:38 +02:00
i387.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
i8259.c [PATCH] x86: - restore i8259A eoi status on resume 2006-09-26 10:52:41 +02:00
init_task.c [PATCH] x86_64: Save original IST values for checking stack addresses 2006-08-30 16:05:16 -07:00
io_apic.c [PATCH] Remove APIC version/cpu capability mpparse checking/printing 2006-09-26 10:52:37 +02:00
ioport.c [PATCH] x86-64 TIF flags for debug regs and io bitmap in ctxsw 2006-09-26 10:52:28 +02:00
irq.c [PATCH] Remove apic mismatch counter 2006-09-26 10:52:29 +02:00
k8.c [PATCH] x86_64: Clean and enhance up K8 northbridge access code 2006-06-26 10:48:15 -07:00
kprobes.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
ldt.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
machine_kexec.c [PATCH] Avoid overwriting the current pgd (V4, x86_64) 2006-09-26 10:52:38 +02:00
Makefile [PATCH] x86: Refactor thermal throttle processing 2006-09-26 10:52:42 +02:00
mce_amd.c [PATCH] cpu hotplug: use hotplug version of registration in late inits 2006-07-31 13:28:39 -07:00
mce_intel.c [PATCH] x86: Add a cumulative thermal throttle event counter. 2006-09-26 10:52:42 +02:00
mce.c [PATCH] x86: Refactor thermal throttle processing 2006-09-26 10:52:42 +02:00
module.c [PATCH] x86_64: x86_64 version of the smp alternative patch. 2006-06-26 10:48:14 -07:00
mpparse.c [PATCH] Refactor some duplicated code in mpparse.c 2006-09-30 01:47:55 +02:00
nmi.c [PATCH] x86: Clean up x86 NMI sysctls 2006-09-30 01:47:55 +02:00
pci-calgary.c [PATCH] x86: Allow disabling early pci scans with pci=noearly or disallowing conf1 2006-09-26 10:52:41 +02:00
pci-dma.c [PATCH] Document iommu=panic 2006-09-30 01:47:55 +02:00
pci-gart.c [PATCH] remove superflous BUG_ON's in nommu and gart 2006-09-26 10:52:32 +02:00
pci-nommu.c [PATCH] remove superflous BUG_ON's in nommu and gart 2006-09-26 10:52:32 +02:00
pci-swiotlb.c [PATCH] Move valid_dma_direction() from x86_64 to generic code 2006-09-29 09:18:10 -07:00
pmtimer.c [PATCH] make pmtmr_ioport __read_mostly 2006-06-26 09:58:21 -07:00
process.c [PATCH] Fix idle notifiers 2006-09-26 10:52:40 +02:00
ptrace.c [PATCH] i386/x86-64: rename is_at_popf(), add iret to tests and fix 2006-09-26 10:52:33 +02:00
reboot.c [PATCH] x86_64: Move export symbols to their C functions 2006-06-26 10:48:22 -07:00
relocate_kernel.S [PATCH] Avoid overwriting the current pgd (V4, x86_64) 2006-09-26 10:52:38 +02:00
setup64.c [PATCH] Don't leak NT bit into next task 2006-09-26 10:52:41 +02:00
setup.c [PATCH] Use ARRAY_SIZE in setup.c 2006-09-30 01:47:55 +02:00
signal.c [PATCH] Remove all traces of signal number conversion 2006-09-26 10:52:41 +02:00
smp.c [PATCH] Remove safe_smp_processor_id() 2006-09-26 10:52:37 +02:00
smpboot.c Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6 2006-09-26 13:07:55 -07:00
stacktrace.c [PATCH] Merge stacktrace and show_trace 2006-09-26 10:52:34 +02:00
suspend_asm.S [PATCH] Change the name of pagedir_nosave 2006-09-26 08:49:01 -07:00
suspend.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
sys_x86_64.c [PATCH] x86_64: Use common sys_time64 2005-11-14 19:55:17 -08:00
syscall.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
tce.c [PATCH] Calgary IOMMU: consolidate per bus data structures 2006-09-26 10:52:31 +02:00
time.c [PATCH] simplify update_times (avoid jiffies/jiffies_64 aliasing problem) 2006-09-29 09:18:15 -07:00
trampoline.S [PATCH] Fix gdt table size in trampoline.S 2006-09-26 10:52:32 +02:00
traps.c [PATCH] Don't use kernel_text_address in oops context 2006-09-26 10:52:38 +02:00
vmlinux.lds.S [PATCH] Re-positioning the bss segment 2006-09-30 01:47:55 +02:00
vsmp.c [PATCH] x86: Allow disabling early pci scans with pci=noearly or disallowing conf1 2006-09-26 10:52:41 +02:00
vsyscall.c [PATCH] Add sparse annotation to vsyscall.c 2006-09-26 10:52:33 +02:00
x8664_ksyms.c [PATCH] Fix zeroing on exception in copy_*_user 2006-09-26 10:52:39 +02:00