Spotted by Al Viro, there was some bogosity in the UML/x86_64 modify_ltd.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

um_mount did nothing but turn around and call sys_mount with the same
arguments.  This makes it useless code, and it has been duly removed.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Prompted by Dave Mielke: This adds a comment explaining why we do not
define _XOPEN_SOURCE, even though the pread man page says you should.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch makes some debug code in the system call path configurable.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch removes some useless code from the system call path, and removes
some debug code, which will reappear in a configurable form in the
syscall-debug patch.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Shifting register restore and userspace resume to the beginning of the
userspace loop, we can remove the identical code done before the loop.
Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The network driver wasn't checking that the host side of an interface had been
successfully opened before trying to close it at shuwtdown.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

ubd_get_config wasn't using the standard device number parser, which caused it
not to recognize letters.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This fixes a couple of copy-user problems spotted by Al Viro.

copy_sc_from_user_tt was doing a copy_from_user to do an in-kernel assignment.
 I commented this, at the request of Chris Wedgewood.  sys_ipc had a void
*__user ptr which should have been void __user *ptr.  Finally, there were a
couple of bogus __user annotations on unsigned longs, which were never going
to be passed into copy_user.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Get rid of the grepping for __st_ino in hostfs, since it doesn't work on
x86_64 (the grep finds it, but it is ifdefed out), and Al says it's
unnecessary anyway.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Tell the netdevice code that a slirp device is not ethernet.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch makes some small changes that parallel changes in 2.6.11:
	The csum buffers are now unsigned char.
	Got rid of an unused define from pgtable-2level.h.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch removes the redundant compiler barrier.  As Linus ever said "The
mb() should make sure that gcc cannot move things around...".
Signed-off-by: Coywolf Qi Hunt <coywolf@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The AMD-8131 I/O APIC (device id 1022:7450/7451) does not support message
signalled interrupts.  Thus, if a device driver attempts to enable msi, it
will suceed, but interrupts are not actually delivered to the cpu.  The
Nforce chipsets do not seem to have this limitation.  AMD confirmed that
MSI mode is unsupported with this APIC.

The following patch adds a flag to pci quirks to detect this and disable
msi.
Signed-off-by: Michael S. Tsirkin <mst@mellano.co.il>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Using the assumption that all addresses in the SRAT are ascending, the
calculations can get a bit simpler, and remove the "been_here_before"
variable.

This also breaks that calculation out into its own function, which further
simplifies the look of the code.
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch is to allow the booting of a numa srat base i386 system without
requiring memory to be in all of it's nodes.  It breaks the assumption that
all nodes have memory during bootup.
Signed-off-by: Keith Mannthey <kmannth@us.ibm.com>
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

memory_present() is how each arch/subarch will tell sparsemem and discontigmem
where all of its memory is.  This is what triggers sparse to go out and create
its mappings for the memory, as well as allocate the mem_map[].

By: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Both the pgdats and the struct zonelist are zeroed unnecessarily.  The
zonelist is a member of the pgdat, so any time the pgdat is cleared, so is the
zonelist.  All of the architectures present a zeroed pgdat to the generic
code, so it's not necessary to set it again.

Not clearing it like this allows the functions to be reused by the memory
hotplug code.  The only architecture which has a dependence on these clears is
i386.  The previous patch in this series fixed that up.
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The next patch in this series will remove the arch-independent clearing of the
pgdat's.  This first patch removes the i386 dependency on that behavior.

The new i386 function, remapped_pgdat_init() takes care of initializing the
pgdats which are finally mapped after paging_init() is done.  The
zone_sizes_init() call has to occur after the pgdat clearing.

zone_sizes_init() is currently called from the end of paging_init(), because
that's the first place where the pgdats could have been zeroed.  However,
zone_sizes_init() really doesn't have anything to do with paging, and probably
shouldn't be in paging_init().

Moving this call into setup_memory() allows the declaration of
zone_sizes_init() to change files as well, which means a net removal of one
#ifdef.  It also provides a handy place to put the new function, far away from
the paging code that it really has nothing to do with.  Moving files required
only using highend_pfn inside of the HIGHMEM ifdef, but this saves a line of
code anyway.

Fixes from: Yasunori Goto <ygoto@us.fujitsu.com>
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Allow userspace programs on ppc64 to use the (privileged) mfpvr instruction
to determine the processor type.  At the moment it emulates the instruction
to provide the real PVR value, though it could be made to lie in future if
for some reason we wish to restrict what CPU features userspace uses.

If nothing else this means that some existing ppc32 applications will now
run on a 64-bit kernel (the 32-bit kernel has long supported this
emulation).  It will also be necessary for ppc64 perfctr support, where
userspace requires finer-grained cpu type information than the kernel in
order to correctly program the performance monitor control registers.
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>

  CC      arch/ppc64/xmon/xmon.o
arch/ppc64/xmon/xmon.c: In function `set_controlled_dabr':
arch/ppc64/xmon/xmon.c:633: warning: implicit declaration of function `plpar_hcall_norets'
arch/ppc64/xmon/xmon.c:633: error: `H_SET_DABR' undeclared (first use in this function)
arch/ppc64/xmon/xmon.c:633: error: (Each undeclared identifier is reported only once
arch/ppc64/xmon/xmon.c:633: error: for each function it appears in.)
arch/ppc64/xmon/xmon.c:634: error: `H_Success' undeclared (first use in this function)
Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Consolidate Kconfig options between arch/ppc/platforms/83xx/Kconfig and
arch/ppc/Kconfig at Tom Rini's request.
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 changes the selinux_setprocattr hook function (which handles
writes to nodes in the /proc/pid/attr directory) to ignore an optional
terminating newline at the end of the value, and to handle a value
beginning with a newline or a null in the same manner as a zero length
value (clearing the attribute for the process and resetting it to using the
default policy behavior).  This change is to address the divergence from
POSIX in the existing API, as POSIX says that write(2) with a zero count
will return zero with no other effect, as well as to simplify use of the
API from scripts (although that isn't recommended).
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch adds a reqprot parameter to the security_file_mmap and
security_file_mprotect hooks that is the original requested protection
value prior to any modification for read-implies-exec, and changes the
SELinux module to allow a mode of operation (controllable via a
checkreqprot setting) where it applies checks based on that protection
value rather than the protection that will be applied by the kernel,
effectively restoring SELinux's original behavior prior to the introduction
of the read-implies-exec logic in the mainline kernel.  The patch also
disables execmem and execmod checking entirely on PPC32, as the PPC32 ELF
ABI presently requires RWE segments per Ulrich Drepper.

At present, the read-implies-exec logic causes SELinux to see every
mmap/mprotect read request by legacy binaries or binaries marked with
PT_GNU_STACK RWE as a read|execute request, which tends to distort policy
even if it reflects what is ultimately possible.  The checkreqprot setting
allows one to set the desired behavior for SELinux, so either the current
behavior or the original behavior is possible.  The checkreqprot value has
a compile-time configurable default value and can also be set via boot
parameter or at runtime via /selinux/checkreqprot if allowed by policy. 
Thanks to Chris Wright, James Morris, and Colin Walters for comments on an
earlier version of the patch.
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch replaces the original experimental Multi-Level Security (MLS)
implementation in SELinux with an enhanced MLS implementation contributed
by Trusted Computer Solutions (TCS).

The enhanced MLS implementation replaces the hardcoded MLS logic with a
flexible constraint-based system and replaces the compile-time option for
MLS support with a policy load-time enable based on whether MLS support was
enabled in the policy when it was built.

The latter change allows a single kernel and policy toolchain to support
both MLS and non-MLS policies.  Compatibility is still provided as usual
for existing policies.
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Kmem_cache_alloc_node is not capable of handling a null cachep pointer as
its input argument.

If I try to increase a slab limit by echoing a very large number into
/proc/slabinfo, kernel will panic from alloc_arraycache() because
Kmem_find_general_cachep() can actually return a NULL pointer if the size
argument is sufficiently large.
Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

If you do 'echo 0 0 > /proc/sys/vm/lowmem_reserve_ratio' the kernel gets a
divide-by-zero.

Prevent that, and fiddle with some whitespace too.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Instead of setting one value lots of times, let's set lots of values once
each, as we should..

This fixes possible inconsistencies that might arise in a version-1 superblock
when devices fail and are removed.

Usage of version-1 superblocks is not yet widespread and no actual problems
have been reported.

From: Paul Clements <paul.clements@steeleye.com>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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

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

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

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

Patch from Ben Dooks

Support for s3c2400 uarts in the s3c2410.c driver,
to go with the s3c2410 and s3c2440 support already
in there.
Add PORT_S3C2400 to include/linux/serial_core.h

Signed-off-by: Ben Dooks
Signed-off-by: Russell King