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

The cpucontrol mutex is not required when no cpus can go up and down.
Andrew wrote a wrapper for it to avoid #ifdefs, this expands that to only
be defined for CONFIG_HOTPLUG_CPU, and uses it everywhere.

The only downside is that the cpucontrol lock was overloaded by my recent
patch to net/core/flow.c to protect it from reentrance, so this
reintroduces the local flow_flush_sem.  This code isn't speed critical, so
taking two locks when CONFIG_HOTPLUG_CPU=y is not really an issue.

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>

- Make sure that all console operations are approriately protected under
  console_sem.

- Adds checks to make sure that people are taking console_sem when it is
  expected to be held.

From: Jes Sorensen <jes@trained-monkey.org>

I'd like to propose the following for 2.6.1-mm/2.6.2. On systems with a
large number of CPUs the number of printk's flowing by for each CPU
booting starts becoming a real console hog.

The following patch eliminates a couple of them (already sent a patch to
David for the ia64 specific ones) as well as changes the
"Building zonelist : X" in "Built Y zonelists". IMHO it doesn't make any
sense to print for each zonelist since it's run in a for loop running
from 0 to Y-1 anyway.

The patch nukes a few new printk's that were introduced with the
scheduler changes to the NUMA code in -mm3, if these are still needed
then I won't fight for that part of the patch.

From: Anton Blanchard <anton@samba.org>

We have IO BARs on ppc64 machines that begin at address 0. The current
pci probe code will ignore anything that starts at 0. Remove these checks.

From: David Gibson <david@gibson.dropbear.id.au>

In the current ppc64 code the function __ste_allocate() in
arch/ppc64/mm/stab.c takes a context parameter which is never used.  This
patch removes it.

From: Tom Rini <trini@kernel.crashing.org>

The following has been approved by Paul, FWIW.

The following patch makes PPC601_SYNC_FIX depend on PPC_PMAC || PPC_PREP.
It used to depend on ALL_PPC I believe, but this was (at least
semi-intentionally I gather) backed out.  The last time this was discussed,
the only platforms old enough to have a 601 to support were pmacs and
preps, so it makes some sense to only ask for these machines.

From: Tom Rini <trini@kernel.crashing.org>

Various fixes for the PPC_GEN550 backend.

- Move PPC_GEN550 bool into a more appropriate spot.

- Add PPC_GEN550 support to the MCPN765 platform.

- Allow for SERIAL_TEXT_DEBUG on PPC_GEN550.

- Add missing headers to arch/ppc/syslib/gen550_dbg.c

- Clean-up the KGDB interface such that we allow for a kgdb_map_scc call,
  but do not require one.

- Add gen550 prototypes to <asm/kgdb.h>

- PPC_GEN550 backend code doesn't depend on 8250_SERIAL.

From: Jes Sorensen <jes@trained-monkey.org>

The following patch sets the IOMMU bounce limit on the SN2 which is require
to avoid some ISA checks in ll_rw_blk.c causing a BUG_ON().

From: Armin <armin@melware.de>

flush_scheduled_work() may not be called from irq-context and it is not
necessary for the diva_os_cancel_soft_isr() function anyway.

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

Fix a race on sleep_avg in sched_exit().

The symptom I saw on 64-bit s390 has been a fixpoint divide exception
because sleep_avg had a value > NS_MAX_SLEEP_AVG.  I tracked it down and
the problem is sched_exit which recalculates the parents sleep average
without taking the runqueue lock.  schedule() subtracts run_time from
sleep_avg of the previous process.  This can turn out negative and is
corrected shortly after the subtraction but that is already too late.
sched_exit() already read the negative value an miscalculated the parents
sleep_avg -> bang.

I fixed this by adding task_rq_lock/task_rq_unlock to sched_exit().

See http://www.cse.unsw.edu.au/~gernot/persona/hobbies/dunnart.html
for more information about Dunnarts, in case you've never heard of
them before. Courtesy of Gernot Heiser.

the size to "vsnprintf()".

That's a pretty clear case of overflow.

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

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

into kernel.bkbits.net:/home/davem/tg3-2.6

  http://bugzilla.kernel.org/show_bug.cgi?id=1766

into kernel.bkbits.net:/home/davem/tg3-2.6

sparc_do_fault assumes that pmd_val(*pmd) = pmd_val(*pmd_k) will
duplicate a PMD entry.  With large soft-PMDs this doesn't work.

Align the pkmap area on a 4MB region so that a single
large pagetable can be used.  Fixes random killing of
processes which used high memory.

This has been in -mm since 2.6.1-mm5

 - IDE can be used as module again (compiles and works),
   this fixes bugzilla bugs #576 and #1700
 - separate module for probing is no longer required
 - generic/default host driver is available as ide_generic module

This contains the build fixes by Adrian Bunk and Andrew Morton.

Thanks to Eric Brower for spotting this.

into nuts.davemloft.net:/disk1/davem/BK/sparc-2.6

From: Davin McCall <davmac@ozonline.com.au>

Set hwif->chipset to ide_forced if it was forced by kernel parameters.

Set hwif->chipset to ide_generic for hwifs controlled by generic IDE
code, so they wont be taken by setup_pci.c:ide_match_hwif().

Patch also fixes /proc/ide/ideX/model to report "generic" instead of
"(none)" for default hwifs.

This has been in -mm since 2.6.1-mm1.

You can't just cast cpumasks.  It doesn't compile if NR_CPUS is greater than
4 * BITS_PER_LONG.

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

into nuts.davemloft.net:/disk1/davem/BK/sparc-2.6

This should fix some picky USB devices.

From Tom Rini <trini@kernel.crashing.org>

On the MBX the kernel made an assumption about where the MAC address would
be in the VPD (Vital Product Data).  However, the documentation for the
firmware (EPPC-Bug) describes the format of the VPD and makes no
guarrantees about the location of any VPD record.  It does however describe
the format of each record type and the MAC address record will be of type
'08' and of size 6.  This changes the code so that instead of assuming a
position, it searches for the record, which I assume is also what EPPC-Bug
does.

From: "H. Peter Anvin" <hpa@zytor.com>

Apparently, on x86-64, the stack isn't always aligned properly (16 bytes)
in the kernel at the moment.  This causes the RAID-6 code to crash the
system.  This patch is a workaround for that; the right thing is to muck
with the assembly entrypoints to enforce proper stack alignment.  However,
that's not anything I feel comfortable doing in an evening, especially
since I don't have a machine on which I can test the resulting kernels.

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

SCLP console/tty fixes:

- Fix incorrect state change of SCLP_RUNNING flag in interrupt handler

- Suppress emission of empty buffers to prevent stack overflow

- Fix off by one error in sclp_write (used to return # of chars written + 1)

- Prevent sclp_tty_write_string from waiting in interrupt (during flush)

- Fix deadlock after TIOCSCLPSNL ioctl

- Fix sclp_tty_chars_in_buffer calculation

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

s390 inline assembly bug-fixes:

- Add memory barriers to spinlocks, atomic variable functions and to
  test_and_{set,clear,change}_bit.

- Add "=m" and "m" contraints to tell gcc that the content of a variable
  is in fact used.

- Replace "+m" constraints by "=m" on the output and "m" on the input list.

- Use c-implemtation for ffz and __ffs.

- Use generic c-implemtation for ffs and fls.

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

s390 general update:

- Add archhelp for "make image".

- 32-bit execve fix.

- Export some symbols: sys_ioctl, put_files_struct & ccw_device_work.

- Minor cleanups in arch/s390/mm/init.c & drivers/s390/net/ctctty.c.

From: David Gibson <david@gibson.dropbear.id.au>

These are some trivial cleanups to the hugepage ppc64 support