Commit Graph

366 Commits

Author SHA1 Message Date
Linus Torvalds
e28cc71572 Relax the rw_verify_area() error checking.
In particular, allow over-large read- or write-requests to be downgraded
to a more reasonable range, rather than considering them outright errors.

We want to protect lower layers from (the sadly all too common) overflow
conditions, but prefer to do so by chopping the requests up, rather than
just refusing them outright.

Cc: Peter Anvin <hpa@zytor.com>
Cc: Ulrich Drepper <drepper@redhat.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Al Viro <viro@ftp.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-04 16:20:40 -08:00
Hugh Dickins
68352e6ee3 [PATCH] mips: setup_zero_pages count 1
Page count should be initialized to 1 on each of the MIPS empty zero pages,
to avoid a bad_page warning whenever one of them is freed from all mappings.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-12 08:57:43 -08:00
Ralf Baechle
80b42598ee [MIPS] Update defconfigs to reflect Kconfig changes.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-12-01 11:05:19 +00:00
Ralf Baechle
85b0549602 [MIPS] Avoid duplicate do_syscall_trace calls on return from sigreturn.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-12-01 11:05:18 +00:00
Ralf Baechle
04a7052c83 [MIPS] Fix register handling in syscalls when debugging.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-12-01 11:05:17 +00:00
Ralf Baechle
ecd5a73904 [MIPS] Alchemy: Set board type on initialization.
From Sergei Shtylylov <sshtylyov@ru.mvista.com>.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-12-01 11:05:16 +00:00
Ralf Baechle
dea91002d4 [MIPS] Alchemy: Fix BCSR accesses.
Fixes BCSR accesses in the board setup/reset code.  The registers are
actually 16-bit, and their addresses are different between DBAu1550 and
other DBAu1xx0 boards.
    
From Sergei Shtylylov <sshtylyov@ru.mvista.com>.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-12-01 11:05:16 +00:00
Ralf Baechle
edcb98d1db [MIPS] Fix return path of sysmips(MIPS_ATOMIC_SET, ...)
The way we were doing things does no longer work on 2.6.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-12-01 11:05:15 +00:00
Ralf Baechle
fe3d72858c [MIPS] Qemu: Accept kernel command line passed by the Emulator.
From Daniel Jacobowitz <dan@debian.org>.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-12-01 11:05:15 +00:00
Daniel Jacobowitz
56ebd51bae [MIPS] Generate SIGILL again
The rdhwr emulation accidentally swallowed the SIGILL from most other
illegal instructions.  Make sure to return -EFAULT by default.
    
Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-12-01 11:05:14 +00:00
Ralf Baechle
b6c3539bdd [MIPS] Kconfig: Include init/Kconfig after we've set 32BIT / 64BIT.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-12-01 11:05:14 +00:00
Ralf Baechle
d981733aaf [MIPS] Use reset_page_mapcount to initialize empty_zero_page usage counter.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-12-01 11:05:13 +00:00
Ralf Baechle
8b36612a23 [MIPS] R10000 and R12000 need to set MIPS_CPU_4K_CACHE ...
... because they have R4000-style caches.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-12-01 11:05:12 +00:00
Ralf Baechle
380b92537c [MIPS] JMR3927: Declare puts function.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-12-01 11:05:11 +00:00
Sergei Shtylylov
702a96a62b [MIPS] JMR3927 fixes.
o Check if IRQ is disabled or in progress before reenabling interrupts
   in jmr3927_irq_end..
 o s/spinlock_irqsave/spin_lock_irqsave/
 o s/spinlock_irqrestore/spin_unlock_irqrestore/
 o Flush write buffer after setting IRQ mask
 o In 2.6 jmr3927_ioc_interrupt interrupt handlers return irqreturn_t
    
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-12-01 11:05:10 +00:00
Ralf Baechle
aec8b7557c [MIPS] Update defconfigs
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-17 16:23:58 +00:00
Ralf Baechle
1a6ea3ec67 [MIPS] SEAD: More build fixes.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-17 16:23:57 +00:00
Ralf Baechle
09b696efd9 [MIPS] TX3927: Try to glue the PCI code.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-17 16:23:56 +00:00
Ralf Baechle
3d5d440176 [MIPS] Ocelot G: Use CPU_MASK_NONE instead of 0 to initialize cpu mask.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-17 16:23:55 +00:00
Ralf Baechle
c32cf78c02 [MIPS] JMR3927: Fix compilation by including <linux/ds1742rtc.h>.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-17 16:23:53 +00:00
Ralf Baechle
5135b0cdb2 [MIPS] JMR3927: need include/asm-mips/mach-jmr3927 in it's include path.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-17 16:23:52 +00:00
Ralf Baechle
8bf4057bdd [MIPS] JMR3927: It's ops-tx3927.o not ops-jmr3927.o
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-17 16:23:51 +00:00
Pantelis Antoniou
b60ccd575c [MIPS] Alchemy: Console output fixup
This is needed to make console output appear with the new driver...
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-17 16:23:50 +00:00
Arnaud Giersch
59f145d28c [MIPS] IP32: Fix sparse warnings.
Add __iomem qualifier to crime and mace pointers.
    
Signed-off-by: Arnaud Giersch <arnaud.giersch@free.fr>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-17 16:23:48 +00:00
Arnaud Giersch
19ce1cfb2d [MIPS] IP32: Export mace symbol.
Export mace symbol so that it can be used in modules.
    
Signed-off-by: Arnaud Giersch <arnaud.giersch@free.fr>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-17 16:23:47 +00:00
Ralf Baechle
70ad7d1840 [MIPS] JMR3927: Fix syntax error.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-17 16:23:46 +00:00
Ralf Baechle
efd9412d85 [MIPS] JMR3927: Undo accidental rename.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-17 16:23:45 +00:00
Ralf Baechle
d93efab838 [MIPS] DDB5477: Fix unused variable warning.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-17 16:23:45 +00:00
Clemens Buchacher
c5b609797b [PATCH] arch/mips/au1000/common/usbdev.c: don't concatenate __FUNCTION__ with strings
It's deprecated. Use "%s", __FUNCTION__ instead.

Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Maximilian Attems <janitor@sternwelten.at>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-13 18:14:16 -08:00
Jeff Garzik
bca73e4bf8 [PATCH] move pm_register/etc. to CONFIG_PM_LEGACY, pm_legacy.h
Since few people need the support anymore, this moves the legacy
pm_xxx functions to CONFIG_PM_LEGACY, and include/linux/pm_legacy.h.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-13 18:14:10 -08:00
Ralf Baechle
01a16fae8e [PATCH] fbdev: Remove remains of epson1356fb
Delete leftovers of the FB_E1356 and anything that did depend on it.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09 07:56:36 -08:00
Nick Piggin
5bfb5d690f [PATCH] sched: disable preempt in idle tasks
Run idle threads with preempt disabled.

Also corrected a bugs in arm26's cpu_idle (make it actually call schedule()).
How did it ever work before?

Might fix the CPU hotplugging hang which Nigel Cunningham noted.

We think the bug hits if the idle thread is preempted after checking
need_resched() and before going to sleep, then the CPU offlined.

After calling stop_machine_run, the CPU eventually returns from preemption and
into the idle thread and goes to sleep.  The CPU will continue executing
previous idle and have no chance to call play_dead.

By disabling preemption until we are ready to explicitly schedule, this bug is
fixed and the idle threads generally become more robust.

From: alexs <ashepard@u.washington.edu>

  PPC build fix

From: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>

  MIPS build fix

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09 07:56:33 -08:00
Christoph Hellwig
7e4c54a2a4 [PATCH] remove ioctl32_handler_t
Some architectures define and use this type in their compat_ioctl code, but
all of them can easily use the identical ioctl_trans_handler_t type that is
defined in common code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09 07:56:00 -08:00
Olaf Hering
733482e445 [PATCH] changing CONFIG_LOCALVERSION rebuilds too much, for no good reason
This patch removes almost all inclusions of linux/version.h.  The 3
#defines are unused in most of the touched files.

A few drivers use the simple KERNEL_VERSION(a,b,c) macro, which is
unfortunatly in linux/version.h.

There are also lots of #ifdef for long obsolete kernels, this was not
touched.  In a few places, the linux/version.h include was move to where
the LINUX_VERSION_CODE was used.

quilt vi `find * -type f -name "*.[ch]"|xargs grep -El '(UTS_RELEASE|LINUX_VERSION_CODE|KERNEL_VERSION|linux/version.h)'|grep -Ev '(/(boot|coda|drm)/|~$)'`

search pattern:
/UTS_RELEASE\|LINUX_VERSION_CODE\|KERNEL_VERSION\|linux\/\(utsname\|version\).h

Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-09 07:55:57 -08:00
Linus Torvalds
3f00d3e8fb Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus 2005-11-07 11:15:23 -08:00
Atsushi Nemoto
16cd395136 Fix return type of setup_frame variants
Since 2.6.13-rc1 setup_frame and its variants return int.  But some bits
were missed in the conversion.
    
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-07 18:05:39 +00:00
Ralf Baechle
0d959c260e IRIX: Use schedule_timeout_interruptible.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-07 18:05:39 +00:00
Atsushi Nemoto
53c2df2f4e Use rtc_lock to protect RTC operations
Many RTC routines were not protected against each other, so there are
potential races, for example, ntp-update against /dev/rtc.  This patch
fixes them using rtc_lock.
    
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-07 18:05:38 +00:00
Ralf Baechle
15b96a4757 Add .gitignore files for MIPS. 2005-11-07 18:05:37 +00:00
Ralf Baechle
307bd284c2 VPE loader janitoring
o Switch to dynamic major
 o Remove duplicate SHN_MIPS_SCOMMON definition
 o Coding style: remove typedefs.
 o Coding style: reorder to avoid the need for forward declarations
 o Use kzalloc.
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-07 18:05:36 +00:00
Ralf Baechle
b8c2a77ce3 PNX8550 uses a MIPS32-like processor core, not R4xx0.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-07 18:05:36 +00:00
Ralf Baechle
afc4841d8a Turn rtlx upside down.
o Coding style
 o Race condition on open
 o Switch to dynamic major
 o Header file cleanup
    
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-11-07 18:05:33 +00:00
Christoph Hellwig
481bed4542 [PATCH] consolidate sys_ptrace()
The sys_ptrace boilerplate code (everything outside the big switch
statement for the arch-specific requests) is shared by most architectures.
This patch moves it to kernel/ptrace.c and leaves the arch-specific code as
arch_ptrace.

Some architectures have a too different ptrace so we have to exclude them.
They continue to keep their implementations.  For sh64 I had to add a
sh64_ptrace wrapper because it does some initialization on the first call.
For um I removed an ifdefed SUBARCH_PTRACE_SPECIAL block, but
SUBARCH_PTRACE_SPECIAL isn't defined anywhere in the tree.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Paul Mackerras <paulus@samba.org>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-By: David Howells <dhowells@redhat.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:53:42 -08:00
Linus Torvalds
4fd5f8267d Merge master.kernel.org:/home/rmk/linux-2.6-drvmodel
Manual #include fixups for clashes - there may be some unnecessary
2005-10-31 07:32:56 -08:00
Tim Schmielau
4e57b68178 [PATCH] fix missing includes
I recently picked up my older work to remove unnecessary #includes of
sched.h, starting from a patch by Dave Jones to not include sched.h
from module.h. This reduces the number of indirect includes of sched.h
by ~300. Another ~400 pointless direct includes can be removed after
this disentangling (patch to follow later).
However, quite a few indirect includes need to be fixed up for this.

In order to feed the patches through -mm with as little disturbance as
possible, I've split out the fixes I accumulated up to now (complete for
i386 and x86_64, more archs to follow later) and post them before the real
patch.  This way this large part of the patch is kept simple with only
adding #includes, and all hunks are independent of each other.  So if any
hunk rejects or gets in the way of other patches, just drop it.  My scripts
will pick it up again in the next round.

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:32 -08:00
Thomas Gleixner
ecea8d19c9 [PATCH] jiffies_64 cleanup
Define jiffies_64 in kernel/timer.c rather than having 24 duplicated
defines in each architecture.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:25 -08:00
Christoph Hellwig
dfb7dac3af [PATCH] unify sys_ptrace prototype
Make sure we always return, as all syscalls should.  Also move the common
prototype to <linux/syscalls.h>

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:20 -08:00
Eric W. Biederman
a928972864 [PATCH] Don't uselessly export task_struct to userspace in core dumps
task_struct is an internal structure to the kernel with a lot of good
information, that is probably interesting in core dumps.  However there is
no way for user space to know what format that information is in making it
useless.

I grepped the GDB 6.3 source code and NT_TASKSTRUCT while defined is not
used anywhere else.  So I would be surprised if anyone notices it is
missing.

In addition exporting kernel pointers to all the interesting kernel data
structures sounds like the very definition of an information leak.  I
haven't a clue what someone with evil intentions could do with that
information, but in any attack against the kernel it looks like this is the
perfect tool for aiming that attack.

So since NT_TASKSTRUCT is useless as currently defined and is potentially
dangerous, let's just not export it.

(akpm: Daniel Jacobowitz <dan@debian.org> "would be amazed" if anything was
using NT_TASKSTRUCT).

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-30 17:37:18 -08:00
Hugh Dickins
872fec16d9 [PATCH] mm: init_mm without ptlock
First step in pushing down the page_table_lock.  init_mm.page_table_lock has
been used throughout the architectures (usually for ioremap): not to serialize
kernel address space allocation (that's usually vmlist_lock), but because
pud_alloc,pmd_alloc,pte_alloc_kernel expect caller holds it.

Reverse that: don't lock or unlock init_mm.page_table_lock in any of the
architectures; instead rely on pud_alloc,pmd_alloc,pte_alloc_kernel to take
and drop it when allocating a new one, to check lest a racing task already
did.  Similarly no page_table_lock in vmalloc's map_vm_area.

Some temporary ugliness in __pud_alloc and __pmd_alloc: since they also handle
user mms, which are converted only by a later patch, for now they have to lock
differently according to whether or not it's init_mm.

If sources get muddled, there's a danger that an arch source taking
init_mm.page_table_lock will be mixed with common source also taking it (or
neither take it).  So break the rules and make another change, which should
break the build for such a mismatch: remove the redundant mm arg from
pte_alloc_kernel (ppc64 scrapped its distinct ioremap_mm in 2.6.13).

Exceptions: arm26 used pte_alloc_kernel on user mm, now pte_alloc_map; ia64
used pte_alloc_map on init_mm, now pte_alloc_kernel; parisc had bad args to
pmd_alloc and pte_alloc_kernel in unused USE_HPPA_IOREMAP code; ppc64
map_io_page forgot to unlock on failure; ppc mmu_mapin_ram and ppc64 im_free
took page_table_lock for no good reason.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:40 -07:00
Hugh Dickins
404351e67a [PATCH] mm: mm_init set_mm_counters
How is anon_rss initialized?  In dup_mmap, and by mm_alloc's memset; but
that's not so good if an mm_counter_t is a special type.  And how is rss
initialized?  By set_mm_counter, all over the place.  Come on, we just need to
initialize them both at once by set_mm_counter in mm_init (which follows the
memcpy when forking).

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:38 -07:00