Commit graph

3833 commits

Author SHA1 Message Date
Stas Sergeev
557962a926 [PATCH] x86: teach dump_task_regs() about the -8 offset.
This should fix multi-threaded core-files

Signed-off-by: stsp@aknet.ru
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-31 18:01:57 -08:00
Anton Blanchard
e597cb32e9 [PATCH] ppc64: htab_initialize_secondary cannot be marked __init
Sonny has noticed hotplug CPU on ppc64 is broken in 2.6.15-*. One of the
problems is that htab_initialize_secondary is called when a cpu is being
brought up, but it is marked __init.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-29 10:26:36 -08:00
Ravikiran G Thirumalai
576fc0978b [PATCH] x86_64: Fix incorrect node_present_pages on NUMA
Currently, we do not pass the correct start_pfn to e820_hole_size, to
calculate holes.  Following patch fixes that.

The bug results in incorrect number of node_present_pages for each pgdat
and causes ugly output in /sys and probably VM inbalances.

Signed-off-by: Alok N Kataria <alokk@calsoftinc.com>
Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Sighed-off-by: Shair Fultheim <shai@scalex86.org>
Sighed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-29 10:20:19 -08:00
Paolo 'Blaisorblade' Giarrusso
63b4444241 [PATCH] uml: fix compilation with CONFIG_MODE_TT disabled
Fix UML compilation when SKAS mode is disabled. Indeed, we were compiling
SKAS-only object files, which failed due to some SKAS-only headers being
excluded from the search path.

Thanks to the bug report from Pekka J Enberg.

Acked-by: Pekka J Enberg <penberg (at) cs ! helsinki ! fi>
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-29 09:48:15 -08:00
Paolo 'Blaisorblade' Giarrusso
74433c0fe1 [PATCH] Hostfs: update for new glibc - add missing symbol exports
Today, when compiling UML, I got warnings for two used unexported symbols:
readdir64 and truncate64. Indeed, my glibc headers are aliasing readdir to
readdir64 and truncate to truncate64 (and so on).

I'm then adding additional exports. Since I've no idea if the symbols where
always provided in the supported glibc's, I've added weak definitions too.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-29 09:48:15 -08:00
Paolo 'Blaisorblade' Giarrusso
516949480d [PATCH] uml: fix random segfaults at bootup
Don't use printk() where "current_thread_info()" is crap.

Until when we switch to running on init_stack, current_thread_info() evaluates
to crap. Printk uses "current" at times (in detail, &current is evaluated with
CONFIG_DEBUG_SPINLOCK to check the spinlock owner task).

And this leads to random segmentation faults.

Exactly, what happens is that &current = *(current_thread_info()), i.e. round
down $esp and dereference the value. I.e. access the stack below $esp, which
causes SIGSEGV on a VM_GROWSDOWN vma (see arch/i386/mm/fault.c).

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-29 09:48:15 -08:00
David S. Miller
d5784b57d2 [SPARC]: Use STABS_DEBUG and DWARF_DEBUG macros in vmlinux.lds.S
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-12-28 13:22:54 -08:00
David S. Miller
597d1f0622 [SPARC]: Kill CHILD_MAX.
It's definition is wrong (-1 means "no limit" not 999),
only the Sparc SunOS/Solaris compat code uses it, so
let's just kill it off completely from limits.h and
all referencing code.

Noticed by Ulrich Drepper.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-12-22 23:10:03 -08:00
Adrian Bunk
0b57ee9e55 [SPARC]: introduce a SPARC Kconfig symbol
Introduce a Kconfig symbol SPARC that is defined on both the sparc and
sparc64 architectures.

This symbol makes some dependencies more readable.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2005-12-22 23:09:54 -08:00
Paul Mackerras
8b1af56b29 powerpc: Fix i8259 cascade on pSeries with XICS interrupt controller
It turns out that commit f9bd170a87
broke the cascade from XICS to i8259 on pSeries machines; specifically
we ended up not ever doing the EOI on the XICS for the cascade.  The
result was that interrupts from the serial ports (and presumably any
other devices using ISA interrupts) didn't get through.  This fixes
it and also simplifies the code, by doing the EOI on the XICS in the
xics_get_irq routine after reading and acking the interrupt on the
i8259.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-12-22 21:55:37 +11:00
David S. Miller
a9c9dff1bc [SPARC64]: Stop putting -finline-limit=XXX into CFLAGS
It was a stupid workaround for the "static inline" vs.
"extern inline" issues of long ago, and it is what causes
schedule() to be inlined like crazy into kernel/sched.c
when -Os is specified.

MIPS and S390 should probably do the same.

Now CC_OPTIMIZE_FOR_SIZE can be safely used on sparc64
once more.

Signed-off-by: David S. Miller <davem@davemloft.net>
2005-12-20 14:53:05 -08:00
Andi Kleen
391eadeec8 [PATCH] Fix build with CONFIG_PCI_MMCONFIG
Now needs to include the type 1 functions ("direct") too.

Reported by Pavel Roskin <proski@gnu.org>

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-20 10:41:57 -08:00
Linus Torvalds
d5d74efbea Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge 2005-12-20 09:41:25 -08:00
Paul Mackerras
5a1244e9dd powerpc: update defconfigs
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-12-20 16:00:17 +11:00
Edson Seabra
b273ed266a [PATCH] powerpc: CPM2 interrupt handler failure after 100,000 interrupts
The CPM2 interrupt handler does not return success to the IRQ subsystem, which
causes it to kill the IRQ line after 100,000 interrupts.

Signed-off-by: Edson Seabra <Edson.Seabra@cyclades.com>
Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-12-20 15:39:33 +11:00
Paul Mackerras
3eb6f26bcd powerpc: correct register usage in 64-bit syscall exit path
Since we don't restore the volatile registers in the syscall exit
path, we need to make sure we don't leak any potentially interesting
values from the kernel to userspace.  This was already the case for
all except r11.  This makes it use r11 for an MSR value, so r11 will
have an (uninteresting) MSR value in it on return to userspace.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-12-20 15:38:47 +11:00
Linus Torvalds
d898d485e7 Merge master.kernel.org:/home/rmk/linux-2.6-arm 2005-12-19 16:43:13 -08:00
Nicolas Pitre
7c612bfd4e [ARM] 3210/1: add missing memory barrier helper for NPTL support
Patch from Nicolas Pitre

Strictly speaking, the NPTL kernel helpers are required for pre ARMv6
only.  They are available on ARMv6+ as well for obvious compatibility
reasons.  However there are cases where extra memory barriers are needed
when using an SMP ARMv6 machine but not on pre-ARMv6.

This patch adds a memory barrier kernel helper that glibc can use as
needed for pre-ARMv6 binaries to be forward compatible with an SMP
kernel on ARMv6, as well as the necessary dmb instructions to the
cmpxchg helper.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Acked-by: Daniel Jacobowitz <dan@codesourcery.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-12-19 22:20:51 +00:00
Jeff Dike
5b7b15afee [PATCH] uml skas0: stop gcc's insanity
With Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>

UML skas0 stub has been miscompiling for many people (incidentally not
the authors), depending on the used GCC versions.

I think (and testing on some GCC versions shows) this patch avoids the
fundamental issue which is behind this, namely gcc using the stack when
we have just replaced it, behind gcc's back.  The remapping and storage
of the return value is hidden in a blob of asm, hopefully giving gcc no
room for creativity.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-18 11:19:44 -08:00
Paolo 'Blaisorblade' Giarrusso
76c842d8f8 [PATCH] uml - fix some funkiness in Kconfig
So you may have seen the miniconfig stuff wander by, which means that my
build script exits if there's a .config error, and we have this:

  fs/Kconfig:1749:warning: 'select' used by config symbol 'CIFS_UPCALL'
	refer to undefined symbol 'CONNECTOR'

This makes it shut up.

Signed-off-by: Rob Landley <rob@landley.net>
[ Verified it makes sense. ]
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-18 11:19:44 -08:00
Rob Landley
53c0b59dcd [PATCH] uml: fix dynamic linking on some 64-bit distros
With Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>

The current UML build assumes that on x86-64 systems, /lib is a symlink
to /lib64, but in some distributions (like PLD and CentOS) they are
separate directories, so the 64 bit library loader isn't found.  This
patch inserts /lib64 at the start of the rpath on x86-64 UML builds.

Signed-off-by: Rob Landley <rob@landley.net>
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-18 11:19:44 -08:00
Paolo 'Blaisorblade' Giarrusso
9ce7677cfd [PATCH] uml: arch/um/scripts/Makefile.rules - remove duplicated code
Duplicated code - the patch adding it was probably applied twice without
enough care.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-18 11:19:44 -08:00
Russell King
567bd98017 [ARM] Fix sys_sendto and sys_recvfrom 6-arg syscalls
Rather than providing more wrappers for 6-arg syscalls, arrange for
them to be supported as standard.  This just means that we always
store the 6th argument on the stack, rather than in the wrappers.

This means we eliminate the wrappers for:
* sys_futex
* sys_arm_fadvise64_64
* sys_mbind
* sys_ipc

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-12-17 15:25:42 +00:00
Linus Torvalds
48ea753075 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 2005-12-16 14:43:57 -08:00
Al Viro
7c3dbbe982 [PATCH] ppc: ppc4xx_dma DMA_MODE_{READ,WRITE} fix
DMA_MODE_{READ,WRITE} are declared in asm-powerpc/dma.h and their
declarations there match the definitions.  Old declarations in
ppc4xx_dma.h are not right anymore (wrong type, to start with).
Killed them, added include of asm/dma.h where needed.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-16 14:43:05 -08:00
Andi Kleen
42f3ab4287 [PATCH] PCI: Fix dumb bug in mmconfig fix
Use correct address when referencing mmconfig aperture while checking
for broken MCFG.  This was a typo when porting the code from 64bit to
32bit.  It caused oopses at boot on some ThinkPads.

Should definitely go into 2.6.15.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-16 11:25:25 -08:00
Christoph Lameter
dc86e88c2b [IA64] Add __read_mostly support for IA64
sparc64, i386 and x86_64 have support for a special data section dedicated
to rarely updated data that is frequently read. The section was created to
avoid false sharing of those rarely read data with frequently written kernel
data.

This patch creates such a data section for ia64 and will group rarely written
data into this section.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-12-16 10:52:46 -08:00
hawkes@sgi.com
d5bf3165b6 [IA64-SGI] change default_sn2 to NR_CPUS==1024
Change the NR_CPUS default for ia64/sn up to 1024.

Signed-off-by: John Hawkes <hawkes@sgi.com>
Signed-off-by: John Hesterberg <jh@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-12-16 10:51:29 -08:00
Jack Steiner
d74700e604 [IA64-SGI] Missed TLB flush
I see why the problem exists only on SN. SN uses a different hardware
mechanism to purge TLB entries across nodes.

It looks like there is a bug in the SN TLB flushing code. During context switch,
kernel threads inherit the mm of the task that was previously running on the
cpu. This confuses the code in sn2_global_tlb_purge().

The result is a missed TLB purge for the task that owns the "borrowed" mm.

(I hit the problem running heavy stress where kswapd was purging code pages of
a user task that woke kswapd. The user task took a SIGILL fault trying to
execute code in the page that had been ripped out from underneath it).

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-12-16 10:46:25 -08:00
Jes Sorensen
3bd7f01713 [IA64] uncached ref count leak
Use raw_smp_processor_id() instead of get_cpu() as we don't need the
extra features of get_cpu().

Signed-off-by: Jes Sorensen <jes@trained-monkey.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-12-16 10:29:52 -08:00
John Hawkes
f5899b5d4f [IA64] disable preemption in udelay()
The udelay() inline for ia64 uses the ITC.  If CONFIG_PREEMPT is enabled
and the platform has unsynchronized ITCs and the calling task migrates
to another CPU while doing the udelay loop, then the effective delay may
be too short or very, very long.

This patch disables preemption around 100 usec chunks of the overall
desired udelay time.  This minimizes preemption-holdoffs.

udelay() is now too big to be inline, move it out of line and export it.

Signed-off-by: John Hawkes <hawkes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-12-16 10:00:24 -08:00
Al Viro
ebbd1bce79 [PATCH] arch/powerpc/kernel/syscalls.c __user annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-15 10:04:31 -08:00
Al Viro
e17f008bbe [PATCH] arch/alpha/kernel/machvec_impl.h: C99 struct initializer
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-15 10:04:31 -08:00
Al Viro
b3e5b5b227 [PATCH] ia64 sn __iomem annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-15 10:04:31 -08:00
Al Viro
b16b88e55d [PATCH] i386,amd64: ioremap.c __iomem annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-15 10:04:30 -08:00
Al Viro
8b8a4e33e4 [PATCH] i386,amd64: mmconfig __iomem annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-15 10:04:30 -08:00
Al Viro
80ce8baf5d [PATCH] arch/sparc/kernel/led.c __user annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-15 10:01:29 -08:00
Al Viro
a32972965e [PATCH] sun4c_memerr_reg __iomem annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-15 10:01:29 -08:00
Al Viro
e4fe342f93 [PATCH] sparc: NULL noise removal (ebus.c)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-15 10:01:28 -08:00
Al Viro
c316ef0494 [PATCH] sparc/kernel/time: __iomem annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-15 10:01:28 -08:00
Al Viro
f8ad23a401 [PATCH] fix iomem annotations in sparc32 pcic code
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-15 10:01:28 -08:00
Linus Torvalds
c7868048a7 Merge master.kernel.org:/home/rmk/linux-2.6-arm 2005-12-14 15:48:06 -08:00
Daniel Jacobowitz
c2e2611425 [ARM] 3205/1: Handle new EABI relocations when loading kernel modules.
Patch from Daniel Jacobowitz

Handle new EABI relocations when loading kernel modules.  This is
necessary for CONFIG_AEABI kernels, and also for some broken
(since fixed) old ABI toolchains.

Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-12-14 22:04:22 +00:00
Robin Holt
27af4cfd11 [IA64] fix for SET_PERSONALITY when CONFIG_IA32_SUPPORT is not set.
Missed this when fixing the SET_PERSONALITY change.

Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-12-14 08:52:57 -08:00
Eric Dumazet
8309cf66fd [PATCH] x86_64: Bug correction in populate_memnodemap()
As reported by Keith Mannthey, there are problems in populate_memnodemap()

The bug was that the compute_hash_shift() was returning 31, with incorrect
initialization of memnodemap[]

To correct the bug, we must use (1UL << shift) instead of (1 << shift) to
avoid an integer overflow, and we must check that shift < 64 to avoid an
infinite loop.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-12 22:31:16 -08:00
john stultz
fd4954714e [PATCH] x86_64: Fix collision between pmtimer and pit/hpet
On systems that do not support the HPET legacy functions (basically the IBM
x460, but there could be others), in time_init() we accidentally fall into a
PM timer conditional and set the vxtime_hz value to the PM timer's frequency.
We then use this value with the HPET for timekeeping.

This patch (which mimics the behavior in time_init_gtod) corrects the
collision.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-12 22:31:16 -08:00
Andi Kleen
df818a52fb [PATCH] x86_64: Fix 32bit thread coredumps
When a register set is passed in don't try to fix up the pointer.

Noticed by Al Viro

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-12 22:31:16 -08:00
Andi Kleen
d6ece5491a [PATCH] i386/x86-64 Correct for broken MCFG tables on K8 systems
They report all busses as MMCONFIG capable, but it never works for the
internal devices in the CPU's builtin northbridge.

It just probes all func 0 devices on bus 0 (the internal northbridge is
currently always on bus 0) and if they are not accessible using MCFG they are
put into a special fallback bitmap.

On systems where it isn't we assume the BIOS vendor supplied correct MCFG.

Requires the earlier patch for mmconfig type1 fallback

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-12 22:31:16 -08:00
Andi Kleen
928cf8c627 [PATCH] i386/x86-64 Fall back to type 1 access when no entry found
When there is no entry for a bus in MCFG fall back to type1.  This is
especially important on K8 systems where always some devices can't be accessed
using mmconfig (in particular the builtin northbridge doesn't support it for
its own devices)

Cc: <gregkh@suse.de>
Cc: <jgarzik@pobox.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-12 22:31:16 -08:00
Andi Kleen
bf5421c309 [PATCH] i386/x86-64: Don't call change_page_attr with a spinlock held
It's illegal because it can sleep.

Use a two step lookup scheme instead.  First look up the vm_struct, then
change the direct mapping, then finally unmap it.  That's ok because nobody
can change the particular virtual address range as long as the vm_struct is
still in the global list.

Also added some LinuxDoc documentation to iounmap.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-12 22:31:16 -08:00