On Power4 and earlier hardware there is no need to clear the CPPR (see RPAp
479 section 18.5.4.7.2 for what little info there is on the CPPR) when
stopping a cpu.  On hardware that uses Power5 an undocumented change has
been made that requires the CPPR to be cleared if an isolate is to be done
on the stopped cpu.  So the following patch lets cpu hotplug work on the
recent hardware.

I sent this patch to the ppc64-dev list back in mid April and Suse picked
it up then for SLES9 so it has been well tested for several months.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

ppc64 has an optimisation where it loops on get_irq until there are no more
interrupts to be handled.  Mark Hack notes that this optimisation hardly
ever hits and costs us a potentially expensive extra read of an interrupt
register every interrupt.

Also make do_IRQ void, the callers never use the return value.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The PPC64 ABI requires the stack to be 128 byte aligned (and that can
become important if AltiVec registers are saved there).  In the kernel,
that's usually dealt with by the fact that the stack has a page
more-or-less to itself.  However, the emergency stacks (used in SMP bringup
and when we detect a bad stack pointer) aren't necessarily page aligned, or
anything aligned for that matter.  This patch applies the necessary
alignement constraint to them.
Signed-off-by: David Gibson <dwg@au.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Fix some breakage in dvb_usercopy() introduced by sparse cleanups in -rc2.
Signed-off-by: Johannes Stezenbach <js@convergence.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The DVB merge forgot an important change - DVB is currently using 
major 250, which is "local" while devices.txt (and thus FSSTND/LSB) require
it uses the officially allocated 212 major.

Fortunately most 2.6 users don't currently use DVB and vendors ship devfs
or versions of makedev that do the right thing and generate 212 majors.

Fix below, original author: Red Hat <alan@redhat.com>, OSDL certificate
of authorship included by reference.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Updating the mm lock ordering documentation drew attention to the fact that
we were wrong to blithely add down_read(&mm->mmap_sem) to swapoff's
unuse_process, while it holds swapcache page lock: not very likely, but it
could deadlock against, say, mlock faulting a page back in from swap.

But it looks like these days it's safe to drop and reacquire page lock if
down_read_trylock fails: the page lock is held to stop try_to_unmap
unmapping the page's ptes as fast as try_to_unuse is mapping them back in;
but the recent fix for get_user_pages works to prevent that too.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

BK is still missing one piece for Oleg's install_page/vmtruncate races. 
Oleg didn't explicitly ACK this, but I think he did implicitly: Oleg?

The previous patch to install_page, returning an error if !page_mapping
once page_table_lock is held, is not enough to guard against vmtruncate.

When unmap_mapping_range already did this vma, but truncate_inode_pages has
not yet done this page, page->mapping will still be set, but we must now
refrain from inserting the page into the page table.

Could check truncate_count, but that would need caller to read and pass it
down.  Instead, recheck page->index against i_size, which is updated before
unmap_mapping_range.  Better check page->mapping too: not really necessary,
but it's accidental that index is left when mapping is reset.

Also, callers are expecting -EINVAL for beyond end of file, not -EAGAIN.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch moves the clearing of the new personality bit from
selinux_bprm_apply_creds (called from compute_creds) to
selinux_bprm_set_security (called from prepare_binprm).  This ensures that the
bit is cleared at the same point in exec processing as for setuid/setgid
binaries, prior to setting up the new image.
Signed-off-by: Stephen Smalley <sds@epoch.ncsc.mil>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Hopefully fixes the free-of-a-freed-page BUG caused during CDRW writing.

This also fixes a problem in the bouncing for io errors (it needs to free
the pages and clear the BIO_UPTODATE flag, not set it.  it's already set.
passing -EIO to bio_endio() takes care of that).
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

For clock_getres(clockid_t clock_id, struct timespec *res), the specification
says "If res is NULL, the clock resolution is not returned." So this kind of
call should succeed.  The current implementation returns -EFAULT.

The patch fixes the bug in compat_clock_getres().
Signed-off-by: Gordon Jin <gordon.jin@intel.com>
Signed-off-by: Arun Sharma <arun.sharma@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Here is a trivial patch that is required to boot the latest 2.6.7 tree
on the SGI 512p system.

Initialize the busy_factor in the sched_domain_init table.  Otherwise,
booting hangs doing excessive load balance operations.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

I noticed that our PPPoE/PPtP access concentrator leaks pty devices.
When all 4096 indices are leaked, there was need to reboot it.

The following patch fixes this problem.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

rcu_offline_cpu and rcu_move_batch have been broken since the list_head's
in struct rcu_head and struct rcu_data were replaced with singly-linked
lists:

  CC      kernel/rcupdate.o
kernel/rcupdate.c: In function `rcu_move_batch':
kernel/rcupdate.c:222: warning: passing arg 2 of `list_add_tail' from
incompatible pointer type
kernel/rcupdate.c: In function `rcu_offline_cpu':
kernel/rcupdate.c:239: warning: passing arg 1 of `rcu_move_batch' from
incompatible pointer type
kernel/rcupdate.c:240: warning: passing arg 1 of `rcu_move_batch' from
incompatible pointer type
kernel/rcupdate.c:236: warning: label `unlock' defined but not used

Kernel crashes when you try to offline a cpu, not surprisingly.

It also looks like rcu_move_batch isn't preempt-safe so I touched that up,
and got rid of an unused label in rcu_offline_cpu.
Signed-off-by: Nathan Lynch <nathanl@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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

This patch fixes the error in the subject line.

Attached is a second patch to account for (most of) Herbert Xu's
comments.

I have left-out the part about changing state->card to a
local variable where it is used a lot.  Unfortunately, that usage is
somewhat pervasive and I would prefer to make those changes in a separate
patch -- after I have had a chance to do some testing.

If you'd prefer one patch to account for the original plus these
changes, let me know and I'll be happy to provide it.

Enclosed is a patch for the i810_audio OSS driver to support using
memory-mapped I/O for those chipsets that support it.

 o Added a family of macros -- I810_IOREADx() and I810_IOWRITEx() -- that
key off the existing card->use_mmio flag to select between using readx/writex
or inx/outx for I/O operations.

 o Converted existing inx/outx invocations to use
I810_IOREADx/I810_IOWRITEx instead.

 o Changed GET_CIV(), GET_LVI, and CIV_TO_LVI() not only to use
I810_IOREADx/I810_IOWRITEx but also to take "card" (i.e. struct i810_card)
paramter.

 o Removed check for "Pure MMIO interfaces" in i810_probe() -- replaced w/
(relocated) check for no I/O resources available.

The macros ata_id_has_lba() and ata_id_has_dma() seem to have their bits
reversed.  LBA support is bit 9 of word 49 in the identify page, whereas
DMA support is bit 8 of word 49 in the identify page.

I see we lost this source line in the changes since 2.6.7.  But if I try
SATAPI expecting no data without this source line, then my ata_piix.ko
promptly dies with such complaints as:

kernel: irq 18: nobody cared!

With this source line, I find I can expect no data, though I still have
to add auto sense to overcome:

kernel: ata2: BUG: timeout without command

This fixes several small but serious x86-64 bugs in 2.6.8rc2:

 - Fix array overflow in PCI bus checking (Travis Betak) 
 - Fix broken pci_map_sg in swiotlb (Suresh B. Siddha)
 - Remove bogus bus check in IOMMU code
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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

* prism54_get/set_debug_oid are missing checks for a null pointer.
  Reported in Bugzilla number 100.

* In the card initialization routine, we try to set the
  output power. For firmware < 1.0.4.3, this leads to a
  worrying "mgt_commit has failed .." in the log although
  the device continues to react normally.
  Fix is simple, do not try to configure output power.
  (which I believe we should not be doing anyway as it is
   probably against local country regulations)

* Reintroduce pushing 0 into the TRDY_TIMEOUT and RETRY_TIMEOUT
  registers. Make this configurable with module parameter
  init_pcitm.

* We now have the ludicrous situation that some hardware setups
  require this (not even pushing 0xFF helps), whilst others
  don't care either way (the majority), and yet others bork
  if anything is pushed into these regs.
  If anybody can explain this (including Conexant :-) ), my ears
  are open.

* oid_mgt.c is calling islpci_mgt_transaction passing the address
  of a pointer to the management frame. This is not being
  initialized by the caller. The callee only updates this
  pointer when successful. When not, boom.

* Being ultracautious again, not only initialize in the caller,
  also null out the pointer unconditionally in the callee.

into tiger.hpl.hp.com:/data1/bk/lia64/to-linus-2.5

	Wrong ifdef around ppc nvram_read_byte() - it should be
CONFIG_GENERIC_NVRAM.

[that's it for today; there's more (fb stuff), but I'd rather make that
a separate series]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

	compile fixes in open_pic.c - it missed cpumask conversion in several
places.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

	usual "shift definition of inlines before their uses" in a couple of
places in drivers/*
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

	a couple of "replace char with explicit s8 to make sure it's really
signed" fixes.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Signed-off-by: Linus Torvalds <torvalds@osdl.org>

	a) ppc KGDB builds only on two subarch; say so in Kconfig
	b) ide-pmac.c can't be a module; make it dependent on IDE=y.
	c) a bunch of isdn drivers is broken on ppc; marked as such
	d) oaknet is broken; marked as such (includes on files that do not
exist, etc.)
	e) buslogic and cyber2000 are broken on sparc64
	f) s3trio framebuffer is broken
	g) usual 8250-based serial is broken on sparc64; in principle it might
be worth supporting (there are PCI cards of that sort), for now marked as
broken (no asm/serial.h, to start with).
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Usual foo ? void : non-void  in reiserfs; gets triggered on big-endian
platforms.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

	asm-ppc/reg.h defines pollutes namespace like there's no tomorrow;
among other things there are
	LR
	SR0...SR15
	DEC
etc.

That breaks quite a few drivers that should otherwise work on ppc.  SR...
and LR were never used by ppc code; commented out in reg.h (note that
they are just aliases for SPRN_SR... and SPRN_LR).  RPA commented out and
its instances in ppc code (all four of them) replaced with SPRN_RPA.  Ditto
for DEC.  The rest of the offenders (DAR and PVR) are left alone for now and
#undef'ed in drivers in question.

We probably want to rip all these guys out of reg.h and convert ppc users
to SPRN_... forms - file ends up included in alot of places and namespace
pollution like that is a Bad Thing(tm).
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Assorted pointer-to-int fixes:
	a) some places want to take pointer modulo alignment or extract
integer that was cast to pointer (which is legitimate), but do that via
wrong cast, triggering sparse warnings.
	b) usual %x (int)ptr -> %p ptr fixes
Signed-off-by: Linus Torvalds <torvalds@osdl.org>