This enables simple hotplug support for sparsemem users. Presently
this only permits memory being added in to node 0 on ZONE_NORMAL.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Currently cpu_to_node() is always 0 in the UP case, though
we do want to have the CPU association linked in under sysfs
even in the cases where we're only on a single CPU.

Fix this up, so we have the cpu0 link on all of the available
nodes that don't already have a CPU link of their own.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

The only platforms that are supporting NUMA are doing so via
sparsemem, so update the dependency.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This adds the URAM block on SH7722 as a separate node.
Sparsemem is required for this, or it can simply be disabled
by explicitly selecting a flatmem model.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This adds basic support for multiple nodes on SH machines.
This is primarily useful for boards with many different
memory blocks that are otherwise unused (SH7722/SH7785 URAM
and so forth).
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Kill off a bunch of externs, and use sections.h instead..
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Currently using multiple nodes tramples the ZONE_NORMAL
max low pfn, tidy up the logic a bit to get it all working
as expected.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Slub currently defaults to 8-byte alignment for the kmalloc
and slab minalign values, where 4 will suffice. In the slab
case BYTES_PER_WORD == 4 already, so defining the minalign
values outright doesn't cause any regressions there either.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Wire up mbind and get/set_mempolicy() in their reserved places.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Some compilers don't support the explicit CPU tuning, while binutils
is still able to handle the special subtype-specific opcodes. Make
the CFLAG optional, falling back on the compiler default if nothing
better exists.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

We have to call in to sparse_memory_present_with_active_regions()
earlier in order for sparsemem to be happy. This was being called
too late, and was causing troubles with the platforms that needed
to enable sparsemem.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

If we have multiple nodes, register these at topology_init() time.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Handy for debugging bootmem troubles.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This implements basic sparsemem support for SH. Presently this only
uses static sparsemem, and we still permit explicit selection of
flatmem. Those boards that want sparsemem can select it as usual.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

pfn_valid() is already defined in the sparsemem case, so we only
need to define this for CONFIG_FLATMEM.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NNobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

.machvec.init can be misaligned with the recent machvec changes,
forcibly align it on the boundary that it expects, as before.
Signed-off-by: NTakashi YOSHII <takashi.yoshii.ze@hitachi.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Now that select no longer works for selecting the "closest" CPU,
we have to explicitly reference the precise sub-type in the few
places where it actually matters (presently only setup code and
some legacy sh-sci cruft).
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This kills off the BareCPU board as a "special" machvec, rather,
we leave this as a default for when no other vector is available,
or when we want to use it in combination with other vectors for
testing with generic ops. As sh_mv is copied out anyways (or
overloaded when an alternate vector is explicitly selected), this
doesn't consume any additional memory.

The generic machvec can be forcibly selected with sh_mv=generic,
or by not having any other boards enabled.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

We now throw all of the machvecs in to .machvec.init and either
select one on the command line, or copy out the first (and
usually only) one to sh_mv. The rest are freed as usual.

This gets rid of all of the silly sh_mv aliasing and makes the
selection explicit rather than link-order dependent.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This tidies up the build rules and permits multiple boards to be
linked in to the same kernel. The earlier Kconfig work ensures that
the CPU configuration is consistent across the boards, as this is
the only thing that we can't do dynamically.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

The command line wasn't being saved off properly after the machvec
changes went in, fix it up.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This was a big mess, rework the logic a bit so that we constrain
to a particular subtype and figure out the board support based
on that. This makes building subtype specific kernels supporting
multiple boards possible again.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This fixes up much of the machvec handling, allowing for it to be
overloaded on boot. Making practical use of this still requires
some Kconfig munging, however.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This adds in some more __user annotations. These weren't being
handled properly in some of the __get_user and __put_user paths,
so tidy those up.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Split out the CPU topology initialization to a separate file,
and switch it to a percpu type, rather than an NR_CPUS array.

At the same time, switch to only registering present CPUs,
rather than using the possible CPU map.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This bug was caught by LTP testcase fchmod06 on Blackfin platform.

In the manpage of fchmod, "EPERM: The effective UID does not match the
owner of the file, and the process is not privileged (Linux: it does not
have the CAP_FOWNER capability)."

But the ramfs nommu code missed the inode_change_ok POSIX UID/GID
verification. This patch fixed this.
Signed-off-by: NBryan Wu <bryan.wu@analog.com>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* git://git.linux-xtensa.org/kernel/xtensa-feed:
  Xtensa: use asm-generic/fcntl.h
  [XTENSA] Remove non-rt signal handling
  [XTENSA] Move common sections into bss sections
  [XTENSA] clean-up header files
  [XTENSA] Use generic 64-bit division
  [XTENSA] Remove multi-exported symbols from xtensa_ksyms.c
  [XTENSA] fix sources using deprecated assembler directive
  [XTENSA] Spelling fixes in arch/xtensa
  [XTENSA] fix bit operations in bitops.h

* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC64]: Fix SBUS IRQ regression caused by PCI-E driver.
  [SPARC64]: Fix 2 bugs in PCI Sabre bus scanning.

* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (24 commits)
  xfrm: Add security check before flushing SAD/SPD
  [NET_SCHED]: Fix filter double free
  [NET]: Avoid duplicate netlink notification when changing link state
  [UDP]: Revert 2-pass hashing changes.
  [AF_UNIX]: Fix stream recvmsg() race.
  [NETFILTER]: nf_conntrack_amanda: fix textsearch_prepare() error check
  [NETFILTER]: ip_tables: fix compat related crash
  [NETFILTER]: nf_conntrack: fix helper module unload races
  [RTNETLINK]: ifindex 0 does not exist
  [NETLINK]: Mark netlink policies const
  [TCP] tcp_probe: Attach printf attribute properly to printl().
  [TCP]: Use LIMIT_NETDEBUG in tcp_retransmit_timer().
  [NET]: Merge dst_discard_in and dst_discard_out.
  [RFKILL]: Make rfkill->name const
  [IPV4]: Restore old behaviour of default config values
  [IPV4]: Add default config support after inetdev_init
  [IPV4]: Convert IPv4 devconf to an array
  [IPV4]: Only panic if inetdev_init fails for loopback
  [TCP]: Honour sk_bound_dev_if in tcp_v4_send_ack
  [BNX2]: Update version and reldate.
  ...

This is a minor fix, but what is currently there is essentially wrong.
In do_page_fault, if the faulting address from user code happens to be
in kernel address space (int *p = (int*)-1; p = 0xbed;)  then the
do_page_fault handler will jump over the local_irq_enable with the

  goto bad_area_nosemaphore;

But the first line there sees this is user code and goes through the
process of sending a signal to send SIGSEGV to the user task. This whole
time interrupts are disabled and the task can not be preempted by a
higher priority task.

This patch always enables interrupts in the user path of the
bad_area_nosemaphore.
Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] pxa: fix pxa27x keyboard driver
  [ARM] Fix 4417/1: Serial: Fix AMBA drivers locking
  [ARM] 4421/1: AT91: Value of _KEY fields.
  [ARM] Solve buggy smp_processor_id() usage
  [ARM] 4422/1: Fix default value handling in gpio_direction_output (PXA)
  [ARM] 4419/1: AT91: SAM9 USB clocks check for suspending
  [ARM] 4418/1: AT91: Number of programmable clocks differs
  [ARM] 4392/2: Do not corrupt the SP register in compressed/head.S

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] Fix warning by moving do_default_vi into CONFIG_CPU_MIPSR2_SRS
  [MIPS] Fix some minor typoes in arch/mips/Kconfig.
  [MIPS] Remove prototype for deleted function qemu_handle_int
  [MIPS] Fix some system calls with long long arguments
  [MIPS] Make dma_map_sg handle sg elements which are longer than one page
  [MIPS] Drop __ARCH_WANT_SYS_FADVISE64
  [MIPS] Fix VGA corruption on RM300C
  [MIPS] RM300: Fix MMIO problems by marking the PCI INT ACK region busy
  [MIPS] EMMA2RH: remove dead KGDB code
  [MIPS] Remove duplicate fpu enable hazard code.
  [MIPS] Atlas, Malta, SEAD: Remove scroll from interrupt handler.

In file included from /usr/src/linux-2.6-2/net/ipv4/ip_input.c:118:

  include2/asm/system.h:245: error: parse error before "__cmpxchg_32"
  include2/asm/system.h:245: error: parse error before '*' token
  include2/asm/system.h:245: warning: type defaults to `int' in declaration of `__cmpxchg_32'
  include2/asm/system.h:245: warning: function declaration isn't a prototype
  include2/asm/system.h:245: warning: data definition has no type or storage class
Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

We used to access the 64-bit IRQ IMAP and ICLR registers of bus
controllers 4-bytes in and as a 32-bit register word, since only the
low 32-bits were relevant.  This seemed like a good idea at the time.

But the PCI-E controller requires full 8-byte 64-bit access to
these registers, so we switched over to accessing them fully.

SBUS was not adjusted properly, which broke interrupts completely.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

If we are on hummingbird, bus runs at 66MHZ.

pbm->pci_bus should be setup with the result of pci_scan_one_pbm()
or else we deref NULL pointers in the error interrupt handlers.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>