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24d9649574fbe591fdfa6b00893d4096f513e539
linux/arch/powerpc/kernel
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Benjamin Herrenschmidt 24d9649574 [POWERPC] Document when printk is useable 
When debugging early boot problems, it's common to sprinkle printk's
all over the place.  However, on 64-bit powerpc, this can lead to
memory corruption if done too early due to the PACA pointer and
lockdep core not being initialized.

This adds some comments to early_setup() that document when it is
safe to do so in order to save time for whoever has to debug that
stuff next.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-05-09 20:22:58 +10:00
..
vdso32
[POWERPC] vdso: Fixes for cache block sizes
2007-11-20 13:56:31 +11:00
vdso64
[POWERPC] vdso: Fixes for cache block sizes
2007-11-20 13:56:31 +11:00
align.c
[POWERPC] Handle alignment faults on SPE load/store instructions
2007-09-14 08:51:48 -05:00
asm-offsets.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
2008-04-29 08:19:14 -07:00
audit.c
[PATCH] audit signal recipients
2007-05-11 05:38:25 -04:00
btext.c
[LIB]: Make PowerPC LMB code generic so sparc64 can use it too.
2008-02-13 16:56:49 -08:00
clock.c
[POWERPC] clk.h interface for platforms
2007-10-03 09:11:56 +10:00
compat_audit.c
[PATCH] add SIGNAL syscall class (v3)
2007-05-11 05:38:25 -04:00
cpu_setup_6xx.S
[POWERPC] ppc32: Fix errata for 603 CPUs
2008-04-21 15:00:32 -05:00
cpu_setup_44x.S
[POWERPC] 4xx: Fix 460GT support to not enable FPU
2008-04-24 13:32:47 -05:00
cpu_setup_pa6t.S
[POWERPC] pasemi: Enable one more hid bit
2007-04-24 21:31:49 +10:00
cpu_setup_ppc970.S
[POWERPC] powerpc: Enable DEEPNAP power savings mode on 970MP
2006-10-16 16:32:25 +10:00
cputable.c
[POWERPC] Make default cputable entries reflect selected CPU family
2008-05-09 20:22:57 +10:00
crash_dump.c
[LIB]: Make PowerPC LMB code generic so sparc64 can use it too.
2008-02-13 16:56:49 -08:00
crash.c
[LIB]: Make PowerPC LMB code generic so sparc64 can use it too.
2008-02-13 16:56:49 -08:00
dma_64.c
iommu sg: powerpc: convert iommu to use the IOMMU helper
2008-02-05 09:44:11 -08:00
entry_32.S
[POWERPC] Add IRQSTACKS support on ppc32
2008-04-29 15:57:34 +10:00
entry_64.S
[POWERPC] irqtrace support for 64-bit powerpc
2008-04-18 15:38:47 +10:00
firmware.c
…
fpu.S
[POWERPC] Restore copyright notice in arch/powerpc/kernel/fpu.S
2006-08-30 14:45:35 +10:00
head_8xx.S
[POWERPC] 8xx: fix swap
2008-03-07 08:42:28 -06:00
head_32.S
[POWERPC] Move stackframe definitions to common header
2008-04-18 15:37:18 +10:00
head_40x.S
[POWERPC] Fix swapper_pg_dir size when CONFIG_PTE_64BIT=y on FSL_BOOKE
2007-12-06 13:11:04 -06:00
head_44x.S
[POWERPC] 4xx: Fix problem with new TLB storage attibute fields on 440x6 core
2008-05-06 10:36:20 -05:00
head_64.S
[POWERPC] Fix bogus paca->_current initialization
2008-05-09 20:22:58 +10:00
head_booke.h
[POWERPC] Rework Book-E debug exception handling
2008-04-17 01:01:36 -05:00
head_fsl_booke.S
[POWERPC] 85xx: Add support for relocatable kernel (and booting at non-zero)
2008-04-24 20:58:01 +10:00
ibmebus.c
[POWERPC] Replace remaining __FUNCTION__ occurrences
2008-04-01 20:43:09 +11:00
idle_6xx.S
…
idle_power4.S
[POWERPC] powermac: Support G5 CPU hotplug
2007-05-07 20:31:13 +10:00
idle.c
[POWERPC] Fix sysctl table check failure on PowerMac
2007-11-08 14:15:30 +11:00
init_task.c
[PATCH] nsproxy: move init_nsproxy into kernel/nsproxy.c
2006-10-02 07:57:20 -07:00
io.c
[POWERPC] Move inline asm eieio to using eieio inline function
2007-07-10 00:33:14 -05:00
iomap.c
[POWERPC] Add 64-bit resources support to pci_iomap
2007-09-20 07:36:52 -05:00
iommu.c
[POWERPC] Replace remaining __FUNCTION__ occurrences
2008-04-01 20:43:09 +11:00
irq.c
[POWERPC] Add IRQSTACKS support on ppc32
2008-04-29 15:57:34 +10:00
isa-bridge.c
[POWERPC] Replace logical-AND by bit-AND in pci_process_ISA_OF_ranges()
2008-04-07 10:03:02 +10:00
kprobes.c
[POWERPC] Kill sparse warnings in kprobes
2008-02-20 13:33:37 +11:00
l2cr_6xx.S
Convert files to UTF-8 and some cleanups
2007-10-19 23:21:04 +02:00
legacy_serial.c
[POWERPC] Fix legacy serial search for opb bus ports
2008-02-06 16:30:00 +11:00
lparcfg.c
powerpc: use non-racy method for proc entries creation
2008-04-29 08:06:22 -07:00
machine_kexec_32.c
…
machine_kexec_64.c
[POWERPC] Rename get_property to of_get_property: arch/powerpc
2007-04-13 03:55:19 +10:00
machine_kexec.c
[POWERPC] Fix crashkernel= handling when no crashkernel= specified
2008-04-30 19:49:48 +10:00
Makefile
[RAPIDIO] Add OF-tree support to RapidIO controller driver
2008-04-29 19:40:28 +10:00
misc_32.S
[POWERPC] Add IRQSTACKS support on ppc32
2008-04-29 15:57:34 +10:00
misc_64.S
[POWERPC] Clean up misc_64.S
2008-04-24 20:58:03 +10:00
misc.S
[POWERPC] Make setjmp/longjmp code usable outside of xmon
2008-01-25 22:52:50 +11:00
module_32.c
[POWERPC] Optimize counting distinct entries in the relocation sections
2007-12-21 15:05:58 +11:00
module_64.c
[POWERPC] Optimize counting distinct entries in the relocation sections
2007-12-21 15:05:58 +11:00
msi.c
[POWERPC] PowerPC MSI infrastructure
2007-05-08 13:40:31 +10:00
nvram_64.c
[POWERPC] pseries: Eliminate global error_log_cnt variable
2007-08-17 11:01:52 +10:00
of_device.c
[POWERPC] Use <linux/of_{platform, device}.h> and not <asm/...> variants.
2008-01-17 14:58:57 +11:00
of_platform.c
[POWERPC] cell: Generalize io-workarounds code
2008-04-24 21:08:12 +10:00
paca.c
[POWERPC] Raise the upper limit of NR_CPUS and move the pacas into the BSS
2008-04-24 20:58:04 +10:00
pci_32.c
[POWERPC] Remove update_bridge_resource
2008-01-23 19:32:30 -06:00
pci_64.c
[POWERPC] Always hookup PHB IO resource even when empty
2008-01-25 22:52:53 +11:00
pci_dn.c
[POWERPC] iSeries: eliminate pci_dn bussubno
2008-01-17 14:57:05 +11:00
pci-common.c
PCI: powerpc: use generic pci_enable_resources()
2008-04-20 21:47:05 -07:00
pmc.c
[POWERPC] Made FSL Book-E PMC support more generic
2008-02-05 23:34:14 -06:00
ppc32.h
Revert "[POWERPC] Add compat handler for PTRACE_GETSIGINFO"
2008-04-24 14:05:15 +10:00
ppc_ksyms.c
Basic braille screen reader support
2008-04-30 08:29:52 -07:00
proc_ppc64.c
powerpc: use non-racy method for proc entries creation
2008-04-29 08:06:22 -07:00
process.c
[POWERPC] Add IRQSTACKS support on ppc32
2008-04-29 15:57:34 +10:00
prom_init_check.sh
[POWERPC] Discourage people from fiddling with kernel data from prom_init
2008-04-24 20:58:03 +10:00
prom_init.c
[POWERPC] Efika: Really, don't pretend to be CHRP
2008-04-17 07:46:12 +10:00
prom_parse.c
[POWERPC] Add of_translate_dma_address
2007-12-11 15:43:35 +11:00
prom.c
[POWERPC] 85xx: Add support for relocatable kernel (and booting at non-zero)
2008-04-24 20:58:01 +10:00
ptrace32.c
Revert "[POWERPC] Add compat handler for PTRACE_GETSIGINFO"
2008-04-24 14:05:15 +10:00
ptrace.c
[POWERPC] user_regset PTRACE_SETREGS regression fix
2008-03-20 10:10:56 +11:00
rtas_flash.c
powerpc: use non-racy method for proc entries creation
2008-04-29 08:06:22 -07:00
rtas_pci.c
[POWERPC] Convert pci and eeh code to of_device_is_available
2008-04-07 13:49:25 +10:00
rtas-proc.c
powerpc: use non-racy method for proc entries creation
2008-04-29 08:06:22 -07:00
rtas-rtc.c
…
rtas.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
2008-04-21 15:50:49 -07:00
setup_32.c
[POWERPC] Add IRQSTACKS support on ppc32
2008-04-29 15:57:34 +10:00
setup_64.c
[POWERPC] Document when printk is useable
2008-05-09 20:22:58 +10:00
setup-common.c
[POWERPC] Add 'model: ...' line to common show_cpuinfo()
2008-03-26 08:44:04 +11:00
setup.h
…
signal_32.c
[POWERPC] Define copy_siginfo_from_user32
2008-04-20 13:03:36 +10:00
signal_64.c
[POWERPC] Implement logging of unhandled signals
2007-10-12 14:05:18 +10:00
signal.c
[POWERPC] Implement logging of unhandled signals
2007-10-12 14:05:18 +10:00
signal.h
[POWERPC] Less ifdef's in signal.c/signal.h
2007-06-14 22:29:58 +10:00
smp-tbsync.c
[POWERPC] Replace kmalloc+memset with kzalloc
2006-12-04 20:42:09 +11:00
smp.c
[POWERPC] Bolt in SLB entry for kernel stack on secondary cpus
2008-05-02 15:00:45 +10:00
softemu8xx.c
[POWERPC] 8xx: Move softemu8xx.c from arch/ppc
2007-10-04 11:02:54 -05:00
stacktrace.c
[POWERPC] Fix new warnings arising from stacktrace patch
2008-04-24 20:58:02 +10:00
suspend.c
[PATCH] x86: Move swsusp __pa() dependent code to arch portion
2007-05-02 19:27:07 +02:00
swsusp_32.S
[POWERPC] Make altivec code in swsusp_32.S depend on CONFIG_ALTIVEC
2007-11-08 14:15:34 +11:00
swsusp_64.c
[POWERPC] powermac: Suspend to disk on G5
2007-05-07 20:31:14 +10:00
swsusp_asm64.S
[POWERPC] powermac: Suspend to disk on G5
2007-05-07 20:31:14 +10:00
swsusp.c
powerpc: fixup hard_irq_disable semantics
2007-05-11 08:29:34 -07:00
sys_ppc32.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
2008-04-21 15:50:49 -07:00
syscalls.c
unified (weak) sys_pipe implementation
2008-05-03 13:50:33 -07:00
sysfs.c
remove __attribute_used__
2008-01-28 23:21:18 +01:00
systbl_chk.c
[POWERPC] Fix a couple of copyright symbols
2008-01-25 22:52:50 +11:00
systbl_chk.sh
[POWERPC] Fix a couple of copyright symbols
2008-01-25 22:52:50 +11:00
systbl.S
[POWERPC] Align the sys_call_table
2007-10-11 14:36:47 +10:00
tau_6xx.c
…
time.c
ntp: rename TICK_LENGTH_SHIFT to NTP_SCALE_SHIFT
2008-05-01 08:03:59 -07:00
traps.c
[POWERPC] Fix compilation for CONFIG_DEBUGGER=n and CONFIG_KEXEC=y
2008-02-07 11:40:18 +11:00
udbg_16550.c
[POWERPC] 4xx: Add early udbg support for 40x processors
2007-12-23 13:13:03 -06:00
udbg.c
[POWERPC] Mark udbg console as CON_ANYTIME, ie. callable early in boot
2008-04-24 21:08:11 +10:00
vdso.c
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/lmb-2.6
2008-02-26 21:08:45 +11:00
vecemu.c
…
vector.S
…
vio.c
[POWERPC] Replace remaining __FUNCTION__ occurrences
2008-04-01 20:43:09 +11:00
vmlinux.lds.S
[POWERPC] Update linker script to properly set physical addresses
2008-04-17 07:46:14 +10:00