... yes, Virginia, some perverts *do* tweak widely shared
method tables and do that in very sensitive spots, at that...

This fixes the ppc64 /proc/cpuinfo oops introduced with the lmb
cleanups.

We are trying to slowly phase out the LMB stuff (it mostly duplicates
functionality of bootmem...), this part got overlooked.

into ppc970.osdl.org:/home/torvalds/v2.5/linux

From: Anton Blanchard <anton@samba.org>

There were a number of bugs in our cmd_line handling:

- We were looking at cmd_line after it had been tokenised. Use saved_command
  line instead
- Use strlcpy instead of memcpy/explicit NULL set.
- Remove magic numbers in iseries cmd_line parsing

From: Anton Blanchard <anton@samba.org>

UP compile fixes.

From: Anton Blanchard <anton@samba.org>

Restore the old cpu names in /proc/cpuinfo, some applications parse this
field.

From: Anton Blanchard <anton@samba.org>

Some trivial oops cleanups.

From: Anton Blanchard <anton@samba.org>

Set node 0 online, otherwise the recent cpu/memory topology stuff will oops
on a non NUMA machine.

From: Linda Xie <lxiep@us.ibm.com>

set err to -ENODEV when a new node doesn't have "interrupt" property.

From: Anton Blanchard <anton@samba.org>

__get_SP used to be a function call which meant we allocated a stack
frame before calling it. This meant the SP it returned was one frame
below the current function. Lets call that bogusSP (and the real one
SP).

The new dump_stack was being tail call optimised so it remained one
frame above bogusSP. dump_stack would then store below SP (as the ABI
allows us to) and would stomp over the back link that bogusSP pointed
to (__get_SP had set the back link up so it worked sometimes, just not
all the time).

Fix this by just making __get_SP an inline that returns the current SP.

From: Stephen Rothwell <sfr@canb.auug.org.au>

I think Ben introduced this new file and iSeries doesn't need it.

From: Anton Blanchard <anton@samba.org>

Another decent optimisation found in the ia64 port, dont take the irq
descriptor lock or do the note_interrupt stuff on PER_CPU irqs (ie IPIs).

From: Anton Blanchard <anton@samba.org>

Clean up per cpu usage in segment table code.

From: Anton Blanchard <anton@samba.org>

Make a number of segment table functions static.
Clean up one duplicated slbia.

From: Anton Blanchard <anton@samba.org>

Add cpus and NUMA memory nodes to sysfs. Also add cpu physical id.

From: Anton Blanchard <anton@samba.org>

The might_sleep infrastructure doesnt like our get_users in the backtrace
code, we often end up with might_sleep warnings inside might_sleep warnings.

Instead just be careful about pointers before dereferencing them.

Also remove the hack where we only printed the bottom 32bits of the WCHAN
value.

From: Anton Blanchard <anton@samba.org>

This adds stack overflow debugging much like x86. Its pretty agressive
and checks if > 8kB out of 16kB of stack is used.

From: Rusty Russell <rusty@rustcorp.com.au>

This cleans up the rtasd logic, and also makes it hotplug CPU safe.

From: Anton Blanchard <anton@samba.org>

smp_message_pass has a few args that are never used. Remove em.
Also add memory missing memory barrier in smp_call_function_interrupt.

From: Rusty Russell <rusty@rustcorp.com.au>

1) Check for cpuids >= NR_CPUS in prom_hold_cpus: we previously
   overflowed arrays when this happened, and checking it here ensures
   that it doesn't happen elsewhere.  Still move processors to
   secondary_hold (out of OF), but we won't release them.

2) smp_iSeries_message_pass and smp_xics_message_pass don't need to
   iterate if given a specific CPU: cleanup and fix.

3) kick_cpu variants don't need to check cpu range (caller is screwed
   anyway if this happened): replaced with BUG_ON for now.

4) smp_openpic_probe and smp_xics_probe can use cpus_weight(): it's
   faster and simpler.

5) User for_each_cpu/for_each_online_cpu as appropriate.

From: Hollis Blanchard <hollisb@us.ibm.com>

fix warning and compile error without CONFIG_SMP

From: Dave Boutcher <sleddog@us.ibm.com>

fix naming collision with asm-ppc64/vio.h. The define would be set there and
this file would not get pulled in.

From: Olaf Hering <olh@suse.de>

Fix for valid nvram rtas tokens.

From: Jake Moilanen <moilanen@austin.ibm.com>

Add 970FX entry into the cputable.

From: Anton Blanchard <anton@samba.org>

Be like x86 and enable -funit-at-a-time.
Use the check_gcc hook when enabling -mcpu=power4/-mtune=power4.

From: Anton Blanchard <anton@samba.org>

Add DEBUG_STACK_USAGE to ppc64

From: Anton Blanchard <anton@samba.org

print useful flags in oops, like x86

From: Jeremy Kerr <jk@ozlabs.org>

Add a ppc64 archhelp.

From: Dave Hansen <haveblue@us.ibm.com>

Allow CROSS32_COMPILE to be set via environment variable

From: Nathan Fontenot <nfont@austin.ibm.com>

Add log_rtas_error(), to be called in the event that a rtas call
returns a hardware error (-1) so we can log additional information
about the hardware error.

From: Nathan Fontenot <nfont@austin.ibm.com>

Add call to rtas to retrieve slot-error-detail information and
log this data to nvram in an EEH event.

From: Anton Blanchard <anton@samba.org>

Fix for ppc64 SMT enablement bug provided by Jimi Xenidis and Michael Day

From: Anton Blanchard <anton@samba.org>

Remove duplicate pcibios_scan_all_fns definition

From: Anton Blanchard <anton@samba.org>

This appeared in the ia64 port and sounds like a good idea. Potentially
avoid an atomic operation in switch_mm.