into ppc970.osdl.org:/home/torvalds/v2.6/linux

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into ppc970.osdl.org:/home/torvalds/v2.6/linux

If a debugger set the TF bit, make sure to clear it when creating a
signal context.  Otherwise, TF will be incorrectly restored by
sigreturn.
Signed-off-by: Daniel Jacobowitz <dan@debian.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Signed-off-by: David S. Miller <davem@davemloft.net>

into picasso.davemloft.net:/home/davem/src/BK/flush_cache_page-2.6

into picasso.davemloft.net:/home/davem/src/BK/set_pte-2.6

into northbeach.davemloft.net.davemloft.net:/home/davem/src/BK/sparc-2.6

This makes the resulting assembly not only easier to read,
it results in roughly a 0.5% savings in code size.

Fixes from Richard Henderson for the original broken asm
constraints.

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into pobox.com:/garz/repo/net-drivers-2.6

into pobox.com:/garz/repo/net-drivers-2.6

into pobox.com:/garz/repo/net-drivers-2.6

into pobox.com:/garz/repo/net-drivers-2.6

into pobox.com:/garz/repo/net-drivers-2.6

This patch updates cmu.c to get the resource by standard method.
Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch changes bcu.c to calculate clock at any time.  Because clock can
be changed.  Moreover, EXPORT_SYMBOL_GPLs are added to it.
Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch adds GPIO/LED/DIPSW driver for TANBAC TB0219.
Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The offb code did not take into account a remapped pci address.  Adding in
the pci_mem_offset fixed a DSI in offb.
Signed-off-by: Jake Moilanen <moilanen@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch fixes a bug in the ppc64 zImage wrapper causing it to pass an
incorrect size to flush_cache() when flushing the data and instruction
caches prior to jumping to the kernel entry.  This causes crashes on
firmare environment that do strict MMU mapping only of actually allocated
areas
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

(It's a real bug, but I suspect it doesn't trigger normally as we tend
to allocate the initrd low, but it should be fixed anyway).

This patch fixes an error in prom_init.c in the check for the initrd
location vs. the memory allocation mecanism. 
Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The PPC64 interrupt code includes a hook to call when an exception
from the performance monitor unit occurs.  However, there's no way of
reserving the hook properly, so if more than one bit of code tries to
use it things will get ugly.  Currently oprofile is the only user, but
there are likely to be more in future e.g. perfctr, if and when it
reaches a fit state for merging.

This patch creates functions to reserve and release the performance
monitor hardware (including its interrupt), and makes oprofile use
them.  It also creates a new arch/ppc64/kernel/pmc.c, in which we can
put any future helper functions for handling the performance monitor
counters.
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

make install passes the zImage to the installkernel script.  When an initrd is
used, this script has to pull out the vmlinux from the zImage because yaboot
can not boot a zImage+initrd combo.  It can only handle vmlinux+initrd or
zImage.initrd.  Its simple to just pass the plain vmlinux instead.
Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Hardware multithreading for RS64 cpus is currently broken.  Anton sent me a
patch a few weeks ago, but it did not work.  So just hide the config option
for the time being.
Signed-off-by: Olaf Hering <olh@suse.de>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Fix a false-positive from the smp_processor_id() debugging code.  Idle threads
are per-cpu anwyay.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Patch provides a generic hotplug cpu implementation, with the only current
user being pmac.  This doesn't replace real hotplug code as is currently
used by LPAR systems.  Ben i can add the additional pmac specific code to
put the processor into a sleeping state seperately.  Thanks to Nathan for
testing.
Signed-off-by: Zwane Mwaikambo <zwane@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

I cannot find a version of binutils which doesn't either do

arch/ppc64/kernel/vdso32/gettimeofday.S: Assembler messages:
arch/ppc64/kernel/vdso32/gettimeofday.S:33: Error: syntax error; found `@' but expected `,'

or

arch/ppc64/kernel/vdso32/gettimeofday.S: Assembler messages:
arch/ppc64/kernel/vdso32/gettimeofday.S:33: Internal error, aborting at ../../gas/config/tc-ppc.c line 2658 in md_assemble
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch adds to the ppc64 kernel a virtual .so (vDSO) that is mapped
into every process space, similar to the x86 vsyscall page.  However, the
implementation is very different (and doesn't use the gate area mecanism). 
Actually, it contains two implementations, a 32 bits and a 64 bits one.

These vDSO's are currently mapped at 0x100000 (+1Mb) when possible (when a
process load section isn't already there).  In the future, we can randomize
that address, or even imagine having a special phdr entry letting apps that
wnat finer control over their address space to put it elsewhere (or not at
all).

The implementation adds a hook to binfmt_elf to let the architecture add a
real VMA to the process space instead of using the gate area mecanism.
This mecanism wasn't very suitable for ppc, we couldn't just "shove" PTE
entries mapping kernel addresses into userland without expensive changes to
our hash table management.  Instead, I made the vDSO be a normal VMA which,
additionally, means it supports copy-on-write semantics if made writable
via ptrace/mprotect, thus allowing breakpoints in the vDSO code.

The current implementation of the vDSOs contain the signal trampolines with
appropriate DWARF informations, which enable us to use non-executable
stacks (patches to come later) along with a few more functions that we hope
glibc will soon make good use of (this is the "hard" part now :) Note that
the symbols exposed by the vDSO aren't "normal" function symbols, apps
can't be expected to link against them directly, the vDSO's are both seen
as if they were linked at 0 and the symbols just contain offsets to the
various functions.  This is done on purpose to avoid a relocation step
(ppc64 functions normally have descriptors with abs addresses in them). 
When glibc uses those functions, it's expected to use it's own trampolines
that know how to reach them.

In some cases, the vDSO contains several versions of a given function (for
various CPUs), the kernel will "patch" the symbol table at boot to make it
point to the appropriate one transparently.  What is currently implemented
is:

 -  int __kernel_gettimeofday(struct timeval *tv, struct timezone *tz);

 This is a fully userland implementation of gettimeofday, with no barriers
 and no locks, and providing 100% equivalent results to the syscall version

 - void __kernel_sync_dicache(unsigned long start, unsigned long end)

 This function sync's the data and instruction caches (for making data
 executable), it is expected that userland loaders use this instead of
 doing it themselves, as the kernel will provide optimized versions for the
 current CPU.  Currently, the vDSO procides a full one for all CPUs prior
 to POWER5 and a nop one for POWER5 which implements hardware snooping at
 the L1 level.  In the future, an intermediate implementation may be done
 for the POWER4 and 970 which don't need the "dcbst" loop (the L1D cache is
 write-through on those).

 - void *__kernel_get_syscall_map(unsigned int *syscall_count);

 Returns a pointer to a map of implemented syscalls on the currently
 running kernel.  The map is agnostic to the size of "long", unlike kernel
 bitops, it stores bits from top to bottom so that memory actually contains
 a linear bitmap check for syscall N by testing bit (0x80000000 >> (N &
 0x1f)) of * 32 bits int at N >> 5.

Note about backward compatibility issues: A bug in the ppc64 libgcc
unwinder makes it unable to unwind stacks properly accross signals if the
signal trampoline isn't on the stack.  This has been fixed in CVS for gcc
4.0 and will be soon on the stable branch, but the problem exist will all
currently used versions.

That means that until glibc gets the patch to enable it's use of the vDSO
symbols for the DWARF unwinder (rather trivial patch that will be pushed to
glibc CVS soon hopefully), unwinding from a signal handler will not work
for 64 bits applications.

I consider this as a non-issue though as a patch is about to be produced,
which can easily get pushed to "live" distros like debian, gentoo, fedora,
etc...  soon enough (it breaks compatilbity with kernels below 2.4.20
unfortunately as our signal stack layout changed, crap crap crap), as there
are few 64 bits applications out there (expect gentoo), as it's only really
an issue with C++ code relying on throwing exceptions out of signal
handlers (extremely rare it seems), and as "release" distros like SLES or
RHEL will probably have the vDSO enabled glibc _and_ the unwinder fix by
the time they release a version with a 2.6.11 or 2.6.12 kernel anyway :)

So far, I yet have to see an app failing because of that...

Finally, many many many thanks to Alan Modra for writing the DWARF
information of the signal handlers and debugging the libgcc issues !
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch just moves as many as possible EXPORT_SYMBOL()s from
arch/ppc64/kernel/ppc_ksyms.c to where the symbols are defined.  This has
been compiled on pSeries, iSeries and pmac.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Update several ppc64 defconfigs.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The "systemcfg" data structure in the ppc64 kernel is something that used
to be defined to be at a hard-coded page number in the kernel image.  This
is not necessary (at least not any more) and is a possible problem with
future developements.  This patch removes that constraint, which also
simplifies various bits of assembly in head.S that were dealing with it.

This is the first step of a deeper cleanup of systemcfg definition of usage
(and ultimately removal in it's current incarnation).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

POWER5 machines have a per-hardware-thread register which counts at a rate
which is proportional to the percentage of cycles on which the cpu
dispatches an instruction for this thread (if the thread gets all the
dispatch cycles it counts at the same rate as the timebase register).  This
register is also context-switched by the hypervisor.  Thus it gives a
fine-grained measure of the actual cpu usage by the thread over time.

This patch adds code to read this register every timer interrupt and on
every context switch.  The total over all virtual processors is available
through the existing /proc/ppc64/lparcfg file, giving a way to measure the
total cpu usage over the whole partition.
Signed-off-by: Manish Ahuja <ahuja@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The pseries nvram driver started probably as a copy of nvram.c.  These
includes are not needed to build it.
Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Patch adds support for the initial PowerQUICC II Pro processors
(MPC8343/E, MPC8347/E, and MPC8349/E) and the first reference platform
(MPC834x SYS) from Freescale.

The initial support is limited to existing drivers that overlap with the
MPC85xx subarch (ethernet, I2C, uart).
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch fixes a trival bug in the CRITICAL_EXCEPTION macro
Signed-off-by: Takeharu KATO <kato.takeharu@jp.fujitsu.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch makes the MPC8555 CDS system utilize the DS1553 RTC/NVRAM.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch adds support for the Dallas 1553 RTC/NVRAM.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch adds support for OpenBios on Ebony, as Matt Porter has
suggested.  It will provide same functionality as the pibs extension for
Luan and Ocotea.
Signed-off-by: Gerhard Jaeger <gjaeger@sysgo.com>
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Add mv64x60 GPP IO pin/IRQ register definitions
Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>