Signed-off-by: NIngo Molnar <mingo@elte.hu>

While I realize that the function isn't currently being used, I still
think an obvious mistake like this should be corrected.
Signed-off-by: NJan Beulich <jbeulich@novell.com>
Acked-by: NJeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

A check for unmapped apic was added before reading maxlvt but the early
read of maxlvt wasn't removed.
Signed-off-by: NChuck Ebbert <cebbert@redhat.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: stable@kernel.org

When the TSC calibration fails then TSC is still used in
sched_clock(). Disable it completely in that case.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: stable@kernel.org

tsc_enabled is set to 0 from the command line switch "notsc" and from
the mark_tsc_unstable code. Seperate those functionalities and replace
tsc_enable with tsc_disable. This makes also the native_sched_clock()
decision when to use TSC understandable.

Preparatory patch to solve the sched_clock() issue on 32 bit.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

When the TSC is calibrated against the PIT due to the nonavailability
of PMTIMER/HPET or due to SMI interference then the setup of the per
CPU cyc2ns variables is skipped. This is unlikely to happen but it
would definitely render sched_clock() unusable.

This was introduced with commit 53d517cd

    x86: scale cyc_2_nsec according to CPU frequency

Update the per CPU cyc2ns variables in all exit pathes of tsc_calibrate.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: stable@kernel.org

When we fully commit to returning back to kernel mode from
a trap, zero out the regs->magic value to prevent false
positives during stack backtraces.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The offset to the pt_regs area was wrong, so we weren't
looking at the right location for the magic cookie.

A trap frame is composed of a "struct sparc_stackf" then
a "struct pt_regs", the code was using "struct reg_window"
instead of "struct sparc_stackf".
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Because of the silly way I set up the initial stack for
new kernel threads, there is a loop at the top of the
stack.

To fix this, properly add another stack frame that is copied
from the parent and terminate it in the child by setting
the frame pointer in that frame to zero.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Whether we sidestep it in init/main.c or not, such situations
will arise again; compiler does generate calls of strcat()
on optimizations, so we really ought to have an out-of-line
version...
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

... and we have few enough places using the latter to make it
simpler to do search and replace...
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

We want sys/ptrace.h before any includes of linux/ptrace.h and
asm/user.h pulls the latter.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Acked-by: NJeff Dike <jdike@addtoit.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Acked-by: NJeff Dike <jdike@addtoit.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NPaul Mackerras <paulus@samba.org>

When a cpu really is stuck in the kernel, it can be often
impossible to figure out which cpu is stuck where.  The
worst case is when the stuck cpu has interrupts disabled.

Therefore, implement a global cpu state capture that uses
SMP message interrupts which are not disabled by the
normal IRQ enable/disable APIs of the kernel.

As long as we can get a sysrq 'y' to the kernel, we can
get a dump.  Even if the console interrupt cpu is wedged,
we can trigger it from userspace using /proc/sysrq-trigger

The output is made compact so that this facility is more
useful on high cpu count systems, which is where this
facility will likely find itself the most useful :)
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch removes the CVS keywords that weren't updated for a long time
from comments.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch removes the CVS keywords that weren't updated for a long time
from comments.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

* Add dtbImage.*
* Added zImage.holly
* Folded zImage.coff.lds into zImage.*lds
* Removed some unused zImage.<foo> ignores
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

dtbImage.* and several zImage. targets get created but never cleaned up.

Also, moved zImage to the clean-files line associated with all other image
results (was previously duplicated).
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

This removes a CVS keyword that wasn't updated for a long time from a
comment.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Replace Redundant Whitelist Entries with the Correct Ones

The ProLiant DL585 G2 and the DL585 G2 are entered reundantly in the
dmi_system_id table. What should have been there are the DL360 and DL380. This
patch simply replaces the redundant entries with the correct entries.
Signed-off-by: NTony Camuso <tony.camuso@hp.com>
Signed-off-by: NPat Schoeller <patrick.schoeller@hp.com>
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>

The PowerPC 440EP, 440GR, 440EPx, and 440GRx chips have an issue that
causes the PLB3-to-PLB4 bridge to wait indefinitely for transaction
requests that cross the end-of-memory-range boundary.  Since the DDR
controller only returns the valid portion of a read request, the bridge
will prevent other PLB masters from completing their transactions.

This implements the recommended workaround for this errata for chips that
use older versions of firmware that do not already handle it.  The last
4KiB of memory are hidden from the kernel to prevent the problem
transactions from occurring.
Signed-off-by: NJosh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: NStefan Roese <sr@denx.de>
Signed-off-by: NJosh Boyer <jwboyer@linux.vnet.ibm.com>

There are a few different types of debug trap exceptions, though now
that they are all going through a special jump table, the restorer needs
to be unified as well.

Presently this is falling through the ret_from_fork path, which more or
less does the right thing on SH-3/4 whilst being completely unsuitable on
MMU-less targets.

Ultimately what we want here is a branch through the platform's
restore_all directly, without worrying about the retval being clobbered.
We can accomplish that through a branch to __restore_all directly, so
switch it so we come back from the jump table and branch to the restorer.

This fixes up a recursion in the nommu WARN_ON() path, as well as some
other userspace nastiness where said recursion caused serious stack
corruption.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Currently is_valid_bugaddr() is true for anything >= PAGE_OFFSET, which
happens to be 0 on nommu configurations. Make this a bit smarter by just
reading in the opcode and comparing it against the trap type that we
already know. Follows the logic from avr32.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Add multi_defconfig, to build a kernel for all supported m68k platforms,
excluding Sun 3 (Sun 3 kernels are incompatible with all other m68k platforms)
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Update the m68k defconfigs
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

m68k: Correctly handle multi-ISA at runtime in multi-platform kernels
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The *_ISA type defines are quite generic and cause namespace conflicts
(e.g. with `AMIGAHW_DECLARE(GG2_ISA)' in <asm/amigahw.h>) for some kernel
configurations. Use ISA_TYPE_* to avoid such conflicts.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

UIO needs m68k_mmutype:

ERROR: "m68k_mmutype" [drivers/uio/uio.ko] undefined!

(noticed by Christian T. Steigies)
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Mark Q40/Q60 floppy support broken:

    arch/m68k/q40/q40ints.c: In function 'q40_irq_handler':
    arch/m68k/q40/q40ints.c:214: error: implicit declaration of function 'floppy_hardint'

Including <asm/floppy.h> doesn't help, as it causes a lot of additional error
messages (cfr. Sun 3x).
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

When running a HP300-enabled kernel on non-HP300 hardware, a test in the early
startup code jumps to the wrong label, causing a double bus fault.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The Hisoft Whippet PCMCIA serial driver has been removed a long time ago, but
it's Kconfig symbol still existed.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The old device/driver matching scheme is going away so stop using it.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NOlof Johansson <olof@lixom.net>

I2C_BOARD_INFO() now sets the type field so no need to set it
separatetly.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: Bryan Wu <cooloney@kernel.org>

Only use the APIC pending timers count to break out of HLT emulation if
the timer vector is enabled.

Certain configurations of Windows simply mask out the vector without
disabling the timer.
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: NAvi Kivity <avi@qumranet.com>

The GVMM module is position independent since it is relocated to the guest
address space.

Commit ea696f9c ("ia64 kvm fixes for O=... builds") broke this by linking
GVMM with non-PIC objects.

Fix by creating two files: memset.S and memcpy.S which just include the files
under arch/ia64/lib/{memset.S, memcpy.S} respectively.

[akpm: don't delete files which we need]
Signed-off-by: NXiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NAvi Kivity <avi@qumranet.com>