Commit Graph

8061 Commits

Author SHA1 Message Date
Heiko Carstens
65912a84c0 [S390] initrd vs. bootmem bitmap.
Move initrd if the bitmap of the bootmem allocator would overwrite it.
In addition this patch sets the default size and address of the initrd to 0.
Therefore all boot loaders must set the initrd size and address correctly.
This is especially relevant for ftp boot via HMC/SE, where this change
requires a special patch file entry in the .ins file which sets these two
values contained at address 0x10408 and 0x10410.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 15:58:41 +02:00
Michael Grundy
4ba069b802 [S390] add kprobes support.
Signed-off-by: Michael Grundy <grundym@us.ibm.com>
Signed-off-by: David Wilder <dwilder@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 15:58:39 +02:00
Mark A. Greer
b2c5f61920 [POWERPC] Start arch/powerpc/boot code reorganization
This abstracts the operations used in the bootwrapper, and defines
the operations needed for the bootwrapper to run on an OF platform.

The operations have been divided up into platform ops (platform_ops),
firmware ops (fw_ops), device tree ops (dt_ops), and console ops
(console_ops).

The proper operations will be hooked up at runtime to provide the
functionality that you need.

Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-20 15:09:58 +10:00
Paul Mackerras
a4dc7ff089 [POWERPC] Define of_read_ulong helper
There are various places where we want to extract an unsigned long
value from a device-tree property that can be 1 or 2 cells in length.
This replaces some open-coded calculations, and one place where we
assumed without checking that properties were the length we wanted,
with a little of_read_ulong() helper.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-20 15:09:48 +10:00
Stephen Rothwell
5adcaf50cf [POWERPC] convert string i/o operations to C
This produces essentially the same code and will make the iSeries i/o
consolidation easier.

The count parameter is changed to long since that will produce the same
(better) code on 32 and 64 bit builds.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-09-20 14:06:18 +10:00
Stephen Rothwell
73ea9e1bcb [POWERPC] clean up ide io accessors
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-09-20 14:06:18 +10:00
Stephen Rothwell
661f1cdb8b [POWERPC] remove unused asm routines
_insw, _outsw, _insl amd _outsl are all unused, so remove them.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-09-20 14:06:18 +10:00
Stephen Rothwell
fa053d2f00 [POWERPC] remove unused io accessors
The io accessors insw_ns, outsw_ns, insl_ns and outsl_ns are unused
(except for one unnecessary use in drivers/net/3c509.c that is addressed
in a previous patch) and are only defined in powerpc/ppc, so remove them.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-09-20 14:06:17 +10:00
Stephen Rothwell
9ca91e0fb5 [POWERPC] silence a warning
Left over from the constifying of get_property.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-09-20 14:02:51 +10:00
Stephen Rothwell
4f896e53ee [POWERPC] make spinlocks work in a combined kernel
If we build a pSeries/iSeries combined kernel, we will need this.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2006-09-20 14:01:16 +10:00
Linus Torvalds
79e453d49b Revert mmiocfg heuristics and blacklist changes
This reverts commits 11012d419c and
40dd2d20f2, which allowed us to use the
MMIO accesses for PCI config cycles even without the area being marked
reserved in the e820 memory tables.

Those changes were needed for EFI-environment Intel macs, but broke some
newer Intel 965 boards, so for now it's better to revert to our old
2.6.17 behaviour and at least avoid introducing any new breakage.

Andi Kleen has a set of patches that work with both EFI and the broken
Intel 965 boards, which will be applied once they get wider testing.

Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Edgar Hucek <hostmaster@ed-soft.at>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-19 08:15:22 -07:00
Linus Torvalds
47a5c6fa0e x86: save/restore eflags in context switch
(And reset it on new thread creation)

It turns out that eflags is important to save and restore not just
because of iopl, but due to the magic bits like the NT bit, which we
don't want leaking between different threads.

Tested-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-18 16:20:40 -07:00
Linus Torvalds
20bf94e266 Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC]: Fix regression in sys_getdomainname()
  [OPENPROMIO]: Handle current_node being NULL correctly.
2006-09-18 16:15:40 -07:00
Linus Torvalds
77e2782f9b Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] 3815/1: headers_install support for ARM
  [ARM] 3794/1: S3C24XX: do not defined set_irq_wake when no CONFIG_PM
  [ARM] 3793/1: S3C2412: fix wrong serial info struct
  [ARM] 3780/1: Fix iop321 cpuid
  [ARM] 3786/1: pnx4008: update defconfig
  [ARM] 3785/1: S3C2412: Fix idle code as default uses wrong clocks
  [ARM] 3784/1: S3C2413: fix config for MACH_S3C2413/MACH_SMDK2413
2006-09-18 16:15:16 -07:00
Andy Walker
b9c54f91a4 [SPARC]: Fix regression in sys_getdomainname()
This patch corrects the buffer length checking in the
sys_getdomainname() implementation for sparc/sparc64.

Signed-off-by: Andy Walker <andy@puszczka.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-18 07:11:36 -07:00
Ben Dooks
a9c3685b2f [ARM] 3794/1: S3C24XX: do not defined set_irq_wake when no CONFIG_PM
Patch from Ben Dooks

Do not define set_irq_wake as a real function if
the CONFIG_PM option is not set.

Fixes bug reported by Thomas Gleixner.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-18 13:30:20 +01:00
Benjamin LaHaise
f04b92e97d [PATCH] i386/x86-64: Add core 2 to oprofile
Add the CPU identification needed by oprofile for Intel (r) Core (tm) 2
CPUs.

Signed-off-by: Benjamin LaHaise <benjamin.c.lahaise@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: "Arun Sharma" <aruns@google.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-16 21:37:48 -07:00
Dan Williams
36694a4c22 [ARM] 3780/1: Fix iop321 cpuid
Patch from Dan Williams

commit a6a38a6622 changed the iop321 id to a value that does not work with all platforms.  Change the mask to permit bit 11.  Tested on an iq80321 600Mhz CRB.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-14 17:45:16 +01:00
Vitaly Wool
0ce046dfca [ARM] 3786/1: pnx4008: update defconfig
Patch from Vitaly Wool

This patch updates the default configuration file for PNX4008.

 arch/arm/configs/pnx4008_defconfig |  715 +++++++------------------------------
 1 file changed, 154 insertions(+), 561 deletions(-)

Signed-off-by: Vitaly Wool <vitalywool@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-14 13:32:08 +01:00
Ben Dooks
c84cbb246e [ARM] 3785/1: S3C2412: Fix idle code as default uses wrong clocks
Patch from Ben Dooks

Fix the idle code on the s3c2412 as the default
code is using bits in the CLKCON register that are
no-longer there.

Provide an override for the idle code, and ensure
that the power configuration is set to allow idle
instead of stop or sleep.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-14 13:29:15 +01:00
Ben Dooks
a55ee0ea51 [ARM] 3784/1: S3C2413: fix config for MACH_S3C2413/MACH_SMDK2413
Patch from Ben Dooks

These two machines are identical, and supported
by the SMDK2413 configuration. When MACH_SMDK2413
is selected, we must also select MACH_S3C2413
to allow machine_is_smdk2413() or machine_is_s3c2413()
to work.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-14 13:29:13 +01:00
Kim Phillips
7dcd86e143 [POWERPC] Fix MPC8349EMDS dts PCI interrupt-map values for IDSEL 0x18
Fix MPC8349EMDS dts PCI interrupt-map values for IDSEL 0x18 per
Tanya's catch.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Tanya Jiang <tanya.jiang@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-14 10:36:11 +10:00
Olof Johansson
f04da0bc36 [POWERPC] Fix non-smp build
This fixes a compile error that only surfaces on CONFIG_SMP=n builds;
<asm/hvcall.h> seems to get pulled in through another header file for
SMP builds.  This problem was introduced by the hvcall stats patch.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-14 10:36:11 +10:00
Paul Mackerras
c547fc28ab Merge branch 'linux-2.6' 2006-09-14 07:07:18 +10:00
Linus Torvalds
63b98080da Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  [POWERPC] Fix G5 DART (IOMMU) race causing occasional data corruption
  [POWERPC] Fix MMIO ops to provide expected barrier behaviour
  [POWERPC] Fix interrupt clearing in kdump shutdown sequence
  [POWERPC] update prep_defconfig
  [POWERPC] kdump: Support kernels having 64k page size.
  [POWERPC] Implement PowerPC futex_atomic_cmpxchg_inatomic().
  [POWERPC] Add new, missing argument to of_irq_map_raw() for 86xx.
  [POWERPC] Update defconfigs
2006-09-13 08:01:41 -07:00
Benjamin Herrenschmidt
eeac5c142b [POWERPC] Fix G5 DART (IOMMU) race causing occasional data corruption
It seems that the occasional data corruption observed with the tg3
driver wasn't due to missing barriers after all, but rather seems to
be due to the DART (= IOMMU) in the U4 northbridge reading stale
IOMMU table entries from memory due to a race.  This fixes it by
making the CPU read the entry back from memory before using it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 22:12:52 +10:00
Paul Mackerras
f007cacffc [POWERPC] Fix MMIO ops to provide expected barrier behaviour
This changes the writeX family of functions to have a sync instruction
before the MMIO store rather than after, because the generally expected
behaviour is that the device receiving the MMIO store can be guaranteed
to see the effects of any preceding writes to normal memory.

To preserve ordering between writeX and readX, and to preserve ordering
between preceding stores and the readX, the readX family of functions
have had an sync added before the load.

Although writeX followed by spin_unlock is not officially guaranteed
to keep the writeX inside the spin-locked region unless an mmiowb()
is used, there are currently drivers that depend on the previous
behaviour on powerpc, which was that the mmiowb wasn't actually required.
Therefore we have a per-cpu flag that is set by writeX, cleared by
__raw_spin_lock and mmiowb, and tested by __raw_spin_unlock.  If it is
set, __raw_spin_unlock does a sync and clears it.

This changes both 32-bit and 64-bit readX/writeX.  32-bit already has a
sync in __raw_spin_unlock (since lwsync doesn't exist on 32-bit), and thus
doesn't need the per-cpu flag.

Tested on G5 (PPC970) and POWER5.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 22:08:26 +10:00
David Howells
3dd836a56d [POWERPC] Export copy_4K_page()
Export copy_4K_page() for use by modules via copy_page() (such as
CacheFiles).

Signed-Off-By: David Howells <dhowells@redhat.com>

Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:53 +10:00
Olaf Hering
26c8af5f01 [POWERPC] print backtrace when entering xmon
xmon does not print a backtrace per default. This is bad on systems with
USB keyboard, the most needed info about the crash is lost.
print a backtrace during the very first xmon entry.

Booting with xmon=nobt disables the autobacktrace functionality.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:53 +10:00
Josh Boyer
06e6d290ac [POWERPC] PPC: Fix Kconfig whitespace warnings
Fix the following whitespace warnings when compiling with ARCH=ppc

arch/ppc/Kconfig:1207:warning: leading whitespace ignored
arch/ppc/Kconfig:1226:warning: leading whitespace ignored
arch/ppc/Kconfig:1231:warning: leading whitespace ignored

Also fix a typo ("Supprt").

Signed-off-by: Josh Boyer <jdub@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:53 +10:00
Mike Kravetz
57852a853b [POWERPC] powerpc: Instrument Hypervisor Calls
Add instrumentation for hypervisor calls on pseries.  Call statistics
include number of calls, wall time and cpu cycles (if available) and
are made available via debugfs.  Instrumentation code is behind the
HCALL_STATS config option and has no impact if not enabled.

Signed-off-by: Mike Kravetz <kravetz@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:53 +10:00
Olof Johansson
1e76875e51 [POWERPC] powerpc: PA Semi PWRficient platform support
Base patch for PA6T and PA6T-1682M. This introduces the
arch/powerpc/platform/pasemi directory, together with basic
implementations for various setup.

Much of this was based on other platform code, i.e. Maple, etc.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:53 +10:00
Olof Johansson
b3ebd1d862 [POWERPC] powerpc: PA6T cputable entry, PVR value
Introduce PWRficient PA6T cputable entries and feature bits.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:52 +10:00
Olof Johansson
5a2fe38d28 [POWERPC] powerpc: Reduce default cacheline size to 64 bytes
Reduce default cacheline size on 64-bit powerpc from 128 bytes to 64.
This is the architected minimum. In most cases we'll still end up using
cache line information from the device tree, but defaults are used during
early boot and doing a few dcbst/icbi's too many there won't do any harm.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:52 +10:00
Josh Boyer
b7e89214aa [POWERPC] PPC 4xx: Enable XMON on PPC 4xx boards
The following patch allows XMON to run on the 4xx platform.  Tested on
Walnut, Ebony, and Nova (440GX based) eval boards.  440EP, 440SP, and
440SPE boards should work as well.  Patch is against 2.6.18-rc6.

Signed-off-by: Josh Boyer <jdub@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:52 +10:00
Corey Minyard
477bcae4c2 [POWERPC] Make function of pm_power_off consistent with x86
Allow the pm_power_off function variable in PPC to work as an override.
This makes the function consistent with the other architectures and it
allows generic poweroff operations (like those provided in IPMI
systems) to work properly on PPC.

Signed-off-by: Corey Minyard <minyard@acm.org>
Cc: Joseph Barnett <jbarnett@motorola.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:52 +10:00
Will Schmidt
c3412dcb75 [POWERPC] Emulate power5 popcntb instruction
In an attempt to make it easier for a power5 optimized app to run on a
power4 or a 970 or random earlier machine, this provides emulation of
the popcntb instruction.

Signed-off-by: Will Schmidt <will_schmidt@vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:52 +10:00
Michael Ellerman
f50d4cfc98 [POWERPC] Split out vpa unregister logic from pseries_kexec_cpu_down_xics()
As part of the new irq code pseries_kexec_cpu_down() was split into a
xics and mpic version. The vpa unregister logic is now only done in the
xics routine, and although that's ok in practice (we don't have SPLPAR
machines with mpic), I'd rather have the two concepts stay separate.

So move the vpa unregister into pseries_kexec_cpu_down(), which gets called
by both the xics and mpic routines. This also gives us an obvious place to
put any new kexec-down logic needed in future.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:39:52 +10:00
Mohan Kumar M
2e8e8dacc5 [POWERPC] Fix interrupt clearing in kdump shutdown sequence
Call chip->eoi(irq) to clear any pending interrupt in case of kdump
shutdown sequence.  chip->end(irq) does not serve this purpose.

Signed-off-by: Mohan Kumar M <mohan@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:31:23 +10:00
Olaf Hering
ebf2ed2838 [POWERPC] update prep_defconfig
Update PReP defconfig, disable some drivers for hardware that is not
used on those systems; enable SL82C105 IDE driver for Powerstack.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:30:08 +10:00
Jon Loeliger
20fb96e2aa [POWERPC] Add new, missing argument to of_irq_map_raw() for 86xx.
Ben speaks; we follow.

Signed-off-by: Jon Loeliger <jdl@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-13 18:28:28 +10:00
Linus Torvalds
bd314d976e Merge branch 'audit.b29' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current
* 'audit.b29' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current:
  [PATCH] sparc64 audit syscall classes hookup
  [PATCH] syscall class hookup for all normal targets
2006-09-12 17:37:24 -07:00
Al Viro
f6bc0c1c5b [PATCH] sparc64 audit syscall classes hookup
... that should do it for all targets; the only remaining issues are
mips (currently treated as non-biarch) and handling of other OS
emulations (OSF/SunOS/Solaris/???).  The latter would need to be
assigned new AUDIT_ARCH_... ABI numbers anyway...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-09-12 03:05:05 -04:00
Al Viro
e65e1fc2d2 [PATCH] syscall class hookup for all normal targets
Take default arch/*/kernel/audit.c to lib/, have those with special
needs (== biarch) define AUDIT_ARCH in their Kconfig.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-09-12 03:04:40 -04:00
Paul Mundt
1bb99a649a sh64: Add a sane pm_power_off implementation.
sh64 wasn't providing a sensible pm_power_off(), add one,
and just wrap it to machine_power_off, which already does
the right thing.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-12 14:40:09 +09:00
Paul Mundt
21264136ce sh64: Trivial build fixes.
While we've been sorting out the toolchain fiasco, some of
the code has suffered a bit of bitrot. Building with GCC4
also brings up some more build warnings. Trivial fixes for
both issues.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-12 14:36:46 +09:00
Paul Mundt
ccdfc526a9 sh64: Drop deprecated ISA tuning for legacy toolchains.
The original sh64 toolchains required that we tune the ISA
level accordingly to not have head.S/entry.S blow up. With
current toolchains, this is no longer the case, and the
syntax magically changed as well, causing all current
toolchains to die a horrible death.

Incidentally, code generation in other parts of the kernel
is now significantly complex enough that none of the older
toolchains make it very far these days, so there's not
even any point in preserving legacy compatability via
as-option.

This fixes a long-standing issue, as noted here:

	http://lkml.org/lkml/2005/1/5/223

Though at the time the current toolchains were too broken
to make adjusting the tuning worthwhile.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-12 14:21:25 +09:00
Al Viro
55669bfa14 [PATCH] audit: AUDIT_PERM support
add support for AUDIT_PERM predicate

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-09-11 13:32:30 -04:00
Al Viro
dc104fb323 [PATCH] audit: more syscall classes added
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-09-11 13:32:27 -04:00
Al Viro
c08037997d [PATCH] syscall classes hookup for ppc and s390
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-09-11 13:32:25 -04:00
Linus Torvalds
5a05e5bf20 Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] 3778/1: S3C24XX: remove changelogs from include/asm-arm/arch-s3c2410 [simtec]
  [ARM] 3783/1: S3C2412: fix IRQ_EINT0 to IRQ_EINT3 handling
  [ARM] 3779/1: S3C24XX: remove changelogs from include/asm-arm/arch-s3c2410 [left]
  [ARM] 3777/1: S3C24XX:  remove changelogs from include/asm-arm/arch-s3c2410 [regs-*.h]
  [ARM] 3776/1: S3C24XX: remove changelogs from include/asm-arm/arch-s3c2410
  [ARM] 3775/1: S3C24XX: do not add same sysdev_driver to two classes
  [ARM] 3774/1: S3C24XX: SMDK2413 has two machine IDs
  [ARM] 3773/1: Add the HWCAP_VFP bit for the ARM926 CPUs
  [ARM] 3772/1: Fix compilation error in mach-ixp4xx/nslu2*
  [ARM] 3767/1: S3C24XX: remove changelog comments from arch/arm/mach-s3c2410
  [ARM] 3766/1: Fix typo in ARM _raw_read_trylock
2006-09-11 07:55:39 -07:00
Paul Mackerras
fb7d527c1a [POWERPC] Update defconfigs
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-09-10 11:04:36 +10:00
Ben Dooks
c6e58ebb37 [ARM] 3783/1: S3C2412: fix IRQ_EINT0 to IRQ_EINT3 handling
Patch from Ben Dooks

The IRQ_EINT0 through IRQ_EINT3 handling has changed
on the S3C2412 from the previous SoCs in the range,
and thus we need to add code to handle this.

The changes come about due to these IRQs being
displayed in two different registers, and needing to
be acked and masked in both.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-09 21:24:13 +01:00
Ben Dooks
189e74ee9c [ARM] 3775/1: S3C24XX: do not add same sysdev_driver to two classes
Patch from Ben Dooks

The s3c244x-irq.c code makes the mistake of adding
the same drive to two different sys-classes. This
causes the class lists to become corrupted and the
suspend code to OOPS.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-09 19:44:50 +01:00
Jack Steiner
38f5745c5a [IA64] SN fix for cpu hotplug/kexec
The sn_cpu_init() is required for cpu initialization on SN platforms.
Change __init to __cpuinit so that the function is not freed with init code/data.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-09-08 11:06:06 -07:00
Jack Steiner
1c7d67073e [IA64] Save register stack contents on cpu start
The SN PROM uses the register stack in the slave loop. The contents
must be preserved for the OS to return to the slave loop via offlining
a cpu or for kexec. A 'flushrs" is needed to force the stack to be written
to memory prior to changing bspstore.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-09-08 11:05:13 -07:00
Andreas Schwab
2636255488 [IA64] Unwire set/get_robust_list
The syscalls set/get_robust_list must not be wired up until
futex_atomic_cmpxchg_inatomic is implemented.  Otherwise the kernel will
hang in handle_futex_death.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-09-08 11:03:40 -07:00
Stephane Eranian
b8444d0076 [IA64] correct file descriptor reference counting in perfmon
Fix a bug in sys_perfmonctl() whereby it was not correctly
decrementing the file descriptor reference count.

Signed-off-by: stephane eranian <eranian@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-09-08 10:59:14 -07:00
Kirill Korotaev
3a45975681 [PATCH] IA64,sparc: local DoS with corrupted ELFs
This prevents cross-region mappings on IA64 and SPARC which could lead
to system crash.  They were correctly trapped for normal mmap() calls,
but not for the kernel internal calls generated by executable loading.

This code just moves the architecture-specific cross-region checks into
an arch-specific "arch_mmap_check()" macro, and defines that for the
architectures that needed it (ia64, sparc and sparc64).

Architectures that don't have any special requirements can just ignore
the new cross-region check, since the mmap() code will just notice on
its own when the macro isn't defined.

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Signed-off-by: Kirill Korotaev <dev@openvz.org>
Acked-by: David Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
[ Cleaned up to not affect architectures that don't need it ]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-08 08:40:46 -07:00
Ben Dooks
3142afb568 [ARM] 3774/1: S3C24XX: SMDK2413 has two machine IDs
Patch from Ben Dooks

It turns out we have both SMDK2413 and S3C2413 for
the same board.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-06 19:03:31 +01:00
Catalin Marinas
f854d37ab6 [ARM] 3773/1: Add the HWCAP_VFP bit for the ARM926 CPUs
Patch from Catalin Marinas

The ARM926EJ-S CPU has the VFP coprocessor and therefore it should be shown
in the /proc/cpuinfo if CONFIG_VFP is enabled.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-06 19:03:28 +01:00
Martin Michlmayr
f64c2c01b7 [ARM] 3772/1: Fix compilation error in mach-ixp4xx/nslu2*
Patch from Martin Michlmayr

Include linux/irq.h in the nslu2 code in order to avoid the following
compiler error:

  CC      arch/arm/mach-ixp4xx/nslu2-power.o
arch/arm/mach-ixp4xx/nslu2-power.c: In function 'nslu2_power_init':
arch/arm/mach-ixp4xx/nslu2-power.c:53: warning: implicit declaration of function 'set_irq_type'
arch/arm/mach-ixp4xx/nslu2-power.c:53: error: 'IRQ_TYPE_LEVEL_LOW' undeclared (first use in this function)
arch/arm/mach-ixp4xx/nslu2-power.c:53: error: (Each undeclared identifier is reported only once
arch/arm/mach-ixp4xx/nslu2-power.c:53: error: for each function it appears in.)
arch/arm/mach-ixp4xx/nslu2-power.c:54: error: 'IRQ_TYPE_LEVEL_HIGH' undeclared (first use in this function)
make[5]: *** [arch/arm/mach-ixp4xx/nslu2-power.o] Error 1

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-06 19:03:24 +01:00
Ben Dooks
916a002101 [ARM] 3767/1: S3C24XX: remove changelog comments from arch/arm/mach-s3c2410
Patch from Ben Dooks

Remove the pointless changelog comments from
arch/arm/mach-s3c2410 files, as all this can
be found from the revision control system.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-06 19:03:21 +01:00
john stultz
ebd6c17109 [PATCH] FRV: Use the generic time stuff for FRV
Use the generic time stuff for FRV.

Signed-off-by: John Stultz <johnstul@us.ibm.com>
Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-06 11:00:02 -07:00
Venkatesh Pallipadi
8adcc0c674 [CPUFREQ] Workaround for BIOS bug in software coordination of frequency
Some buggy BIOSes do a "software any" kind of coordination without telling
about it to OS. So, when OS sets frequency on one CPU on these platforms,
it will also impact all the other logical CPUs that are in the same power
domain. Attached patch is a workaround for those buggy BIOSes.
Patch should be a noop on the normal non-buggy platforms.

Applies over previously sent acpi-cpufreq and software coordination
bug fix patch

Signed-off-by: Denis Sadykov <denis.m.sadykov@intel.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-09-05 17:28:42 -04:00
Rafa Bilski
db44aaf3a2 [CPUFREQ] Longhaul - Add voltage scaling to driver
Rename option "dont_scale_voltage" to "scale_voltage" because
don't will be default.
Use "pos" for calculating voltage. In this way driver don't need
to know mV value or low level value. Simply min U is one pos and
max U is second pos. All pos between these two are used.
Assume that min U is for min f and max U for max f. For frequency
between min and max calculate pos based on difference between
current frequency and min f.
Values in mobile VRM table changed to values from
C3-M datasheet.

Signed-off-by: Rafa Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-09-05 17:28:42 -04:00
Dave Jones
23e735bc7b Merge ../linus 2006-09-05 17:16:33 -04:00
Benjamin Herrenschmidt
8f2779491a [PATCH] powerpc: Fix typo in powermac platform functions
New sparse caught that typo which could have caused erratic hardware
behaviour on some machines if the platform functions are used by the
firmware to change bits in some FCR registers.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-03 17:53:50 -07:00
Linus Torvalds
e694420258 Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] 3762/1: Fix ptrace cache coherency bug for ARM1136 VIPT nonaliasing Harvard caches
  [ARM] 3765/1: S3C24XX: cleanup include/asm-arm/arch-s3c2410/dma.h
  [ARM] 3764/1: S3C24XX: change type naming to kernel style
  [ARM] 3763/1: add both rtcs to csb337 defconfig
  [ARM] Fix ARM __raw_read_trylock() implementation
  [ARM] 3750/3: Fix double VFP emulation for EABI kernels
2006-09-02 14:51:45 -07:00
George G. Davis
a188ad2bc7 [ARM] 3762/1: Fix ptrace cache coherency bug for ARM1136 VIPT nonaliasing Harvard caches
Patch from George G. Davis

Resolve ARM1136 VIPT non-aliasing cache coherency issues observed when
using ptrace to set breakpoints and cleanup copy_{to,from}_user_page()
while we're here as requested by Russell King because "it's also far
too heavy on non-v6 CPUs".

NOTES:

1. Only access_process_vm() calls copy_{to,from}_user_page().
2. access_process_vm() calls get_user_pages() to pin down the "page".
3. get_user_pages() calls flush_dcache_page(page) which ensures cache
   coherency between kernel and userspace mappings of "page".  However
   flush_dcache_page(page) may not invalidate I-Cache over this range
   for all cases, specifically, I-Cache is not invalidated for the VIPT
   non-aliasing case.  So memory is consistent between kernel and user
   space mappings of "page" but I-Cache may still be hot over this
   range.  IOW, we don't have to worry about flush_cache_page() before
   memcpy().
4. Now, for the copy_to_user_page() case, after memcpy(), we must flush
   the caches so memory is consistent with kernel cache entries and
   invalidate the I-Cache if this mm region is executable.  We don't
   need to do anything after memcpy() for the copy_from_user_page()
   case since kernel cache entries will be invalidated via the same
   process above if we access "page" again.  The flush_ptrace_access()
   function (borrowed from SPARC64 implementation) is added to handle
   cache flushing after memcpy() for the copy_to_user_page() case.

Signed-off-by: George G. Davis <gdavis@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-02 18:43:20 +01:00
Benjamin Herrenschmidt
ca72945d2d [PATCH] powerpc: Fix PowerMac IRQ handling bug
The port to genirq & the new powerpc interrupt model in 2.6.18 introduced a
bug in the legacy PowerMac PIC code (used on older machines) because of a
typo potentially causing hangs due to interrupt storms.  This fixes it,
along with a performance issue causing us to do spurrious retriggers after
masking an interrupt.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01 11:39:09 -07:00
Bill Huey (hui
d742eae8e2 [PATCH] xtensa: ptrace: EXIT_ZOMBIE fix
We're testing the wrong task_struct field.

Acked-by: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01 11:39:08 -07:00
john stultz
30f3174d1c [PATCH] Fix faulty HPET clocksource usage (fix for bug #7062)
Apparently some systems export valid HPET addresses, but hpet_enable()
fails.  Then when the HPET clocksource starts up, it only checks for a
valid HPET address, and the result is a system where time does not advance.

See http://bugme.osdl.org/show_bug.cgi?id=7062 for details.

This patch just makes sure we better check that the HPET is functional
before registering the HPET clocksource.

Signed-off-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01 11:39:08 -07:00
Linus Torvalds
dd1a47c21e Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
  [S390] cio: unsolicited interrupts during sense pgid.
  [S390] cio: no path after machine check.
  [S390] cio: kernel stack overflow.
  [S390] dasd: fix device shutdown process.
  [S390] broken copy_in_user function.
2006-08-31 14:42:07 -07:00
Ben Dooks
f105a7dfc5 [ARM] 3764/1: S3C24XX: change type naming to kernel style
Patch from Ben Dooks

The type naming in the s3c24xx dma code is riddled with
typedefs creating _t types, from the code import from 2.4
which is contrary to the current Kernel coding style.

This patch cleans this up, removing the typedefs and
and fixing up the resultant code changes.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-08-31 15:26:37 +01:00
David Brownell
851fb304b5 [ARM] 3763/1: add both rtcs to csb337 defconfig
Patch from David Brownell

This adds RTC support to the csb337 default config.  Both the AT91
and the ds1307 RTCs are enabled (rtc0 and rtc1 respectively).

The ds1307 is used to initialize the system time, since it's battery-backed.

From then on the AT91 RTC is used, since it's more capable (with both
alarm and update irqs, and system wakeup capability) even though it
needs manual initialization (symlink /dev/rtc to /dev/rtc0 for older
versions of hwclock, then "hwclock --systohc") in an rc script or
from inittab.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-08-31 15:26:35 +01:00
Paul Mackerras
aa43f77939 Merge branch 'merge' 2006-08-31 15:45:48 +10:00
Linus Torvalds
4c15343167 Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  [POWERPC] Fix return value from memcpy
  [POWERPC] iseries: Define insw et al. so libata/ide will compile
  [POWERPC] Fix irq enable/disable in smp_generic_take_timebase
  [POWERPC] Fix problem with time not advancing on 32-bit platforms
  [POWERPC] Restore copyright notice in arch/powerpc/kernel/fpu.S
  [POWERPC] Fix up ibm_architecture_vec definition
  [POWERPC] Make OF irq map code detect more error cases
  [POWERPC] Support for "weird" MPICs and fixup mpc7448_hpc2
  [POWERPC] Fix MPIC sense codes in documentation
  [POWERPC] Fix performance regression in IRQ radix tree locking
  [POWERPC] Add mpc7448hpc2 device tree source file
  [POWERPC] Add MPC8349E MDS device tree source file to arch/powerpc/boot/dts
  [POWERPC] modify mpc83xx platforms to use new IRQ layer
  [POWERPC] Adapt ipic driver to new host_ops interface, add set_irq_type to set IRQ sense
  [POWERPC] back up old school ipic.[hc] to arch/ppc
  [POWERPC] Use mpc8641hpcn PIC base address from dev tree.
  [POWERPC] Allow MPC8641 HPCN to build with CONFIG_PCI disabled too.
  [POWERPC] Fix powerpc 44x_mmu build
  [POWERPC] Remove flush_dcache_all export
2006-08-30 21:44:06 -07:00
Paul Mackerras
eb36c2884a [PATCH] ppc32: fix last_jiffy time comparison
This fixes a hang on ppc32.

The problem was that I was comparing a 32-bit quantity with a 64-bit
quantity, and consequently time wasn't advancing.  This makes us use a
64-bit quantity on all platforms, which ends up simplifying the code
since we can now get rid of the tb_last_stamp variable (which actually
fixes another bug that Ben H and I noticed while going carefully through
the code).

This works fine on my G4 tibook.  Let me know how it goes on your
machines.

Acked-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-30 21:21:55 -07:00
Paul Mackerras
d0027bf09f [POWERPC] Fix return value from memcpy
As pointed out by Herbert Xu <herbert@gondor.apana.org.au>, our
memcpy implementation didn't return the destination pointer as its
return value, and there is code in the kernel that expects that.
This fixes it.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-08-31 13:22:58 +10:00
Linus Torvalds
9129d6ea47 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Increase default nodes shift to 10, nr_cpus to 1024
  [IA64] remove redundant local_irq_save() calls from sn_sal.h
  [IA64] panic if topology_init kzalloc fails
  [IA64-SGI] Silent data corruption caused by XPC V2.
2006-08-30 17:12:11 -07:00
Suleiman Souhlal
ec0063b40a [PATCH] x86_64: Don't write out segments from vsyscall32 DSO if it is not mapped
It's possible to get an invalid page fault in kernel mode when we try to
write out segments from vsyscall32 when dumping core for a 32bit process if
the vsyscall32 DSO is not mapped in its address space (which can happen if,
for example, ulimit -v 100 is run).

Signed-off-by: Suleiman Souhlal <suleiman@google.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-30 16:05:16 -07:00
Keith Owens
01ebb77b31 [PATCH] x86_64: Save original IST values for checking stack addresses
The values in init_tss.ist[] can change when an IST event occurs.  Save
the original IST values for checking stack addresses when debugging or
doing stack traces.

Signed-off-by: Keith Owens <kaos@ocs.com.au>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-30 16:05:16 -07:00
Andi Kleen
266f056676 [PATCH] i386: Fix stack switching in do_IRQ
There was a bogus hunk from the genirq merge that essentially
broke stack switching for hard interrupts. Remove it since it isn't
needed.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-30 16:05:16 -07:00
Andi Kleen
40dd2d20f2 [PATCH] x86: Disable MMCONFIG on Intel SDV using DMI blacklist
As a replacement for the earlier removal of the e820 MCFG check
we blacklist the Intel SDV with the original BIOS bug that
motivated that check. On those machines don't use MMCONFIG.

This also adds a new pci=mmconf parameter to override the blacklist.

Cc: Greg KH <gregkh@suse.de>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-30 16:05:16 -07:00
Andi Kleen
ceee882230 [PATCH] x86_64: Recover 1MB of kernel memory
Noticed by Jan Beulich.

When the kernel was moved from 1MB to 2MB in 2.6.17 the kernel reservation
code wasn't adjusted and it still reserved starting with 1MB. This means 1MB always
were lost.

This patch fixes this by reserving only starting with _text.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-30 16:05:15 -07:00
Jan Beulich
ea424055b7 [PATCH] x86: Make backtracer fallback logic more bullet-proof
The unwinder fallback logic still had potential for falling through to
the legacy stack trace code without printing an indication (at once
serving as a separator) of this.

Further, the stack pointer retrieval for the fallback should be as
restrictive as possible (in order to avoid having the legacy stack
tracer try to access invalid memory). The patch tightens that, but
this could certainly be further improved.

Also making the call_trace command line option now conditional upon
CONFIG_STACK_UNWIND (as it's meaningless otherwise).

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-30 16:05:15 -07:00
Andi Kleen
29fe5f3baf [PATCH] i386: Add kernel thread stack frame termination for properly stopping stack unwinds.
One open question: Should this added push perhaps be made conditional
upon CONFIG_STACK_UNWIND or CONFIG_UNWIND_INFO?
[AK: not needed, these are all very slow paths]

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-30 16:05:15 -07:00
Andi Kleen
c05991ed12 [PATCH] x86_64: Add kernel thread stack frame termination for properly stopping stack unwinds.
One open question: Should these added pushes perhaps be made
conditional upon CONFIG_STACK_UNWIND or CONFIG_UNWIND_INFO?
[AK: Not needed -- these are all very slow paths]

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-30 16:05:15 -07:00
Andi Kleen
11012d419c [PATCH] x86: Revert e820 MCFG heuristics
The check for the MCFG table being reserved in the e820 map was originally
added to detect a broken BIOS in a preproduction Intel SDV. However it also
breaks the Apple x86 Macs, which can't supply this properly, but need
a working MCFG. With this patch they wouldn't use the MCFG and not work.

After some discussion I think it's best to remove the heuristic again.
It also failed on some other boxes (although it didn't cause much
problems there because old style port access for PCI config space
still works as fallback), but the preproduction SDVs can just use
pci=nommcfg. Supporting production machines properly is more
important.

Edgar Hucek did all the debugging work.

Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Edgar Hucek <hostmaster@ed-soft.at>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-30 16:05:15 -07:00
Andi Kleen
ddcf36511d [PATCH] x86_64: Update defconfig
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-30 16:05:15 -07:00
Daniel Jacobowitz
0355b3e039 [ARM] 3750/3: Fix double VFP emulation for EABI kernels
Patch from Daniel Jacobowitz

vfp_put_double didn't work in a CONFIG_AEABI kernel.  By swapping
the arguments, we arrange for them to be in the same place regardless
of ABI.  I made the same change to vfp_put_float for consistency.

Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-08-30 15:06:39 +01:00
Martin Schwidefsky
af313e5a4f [S390] broken copy_in_user function.
The copy_in_user primitive does not work as advertised. If the source
and target area are available copy_in_user copies one byte too much.
If one of the memory areas is not available it does not copy as much
data as it can, but up to 257 bytes less.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-08-30 14:33:30 +02:00
Paul Mackerras
467c37801c [POWERPC] Fix irq enable/disable in smp_generic_take_timebase
Eran Ben-Avi <eranpublic@yahoo.com> pointed out that the arch/ppc version
of smp_generic_take_timebase disables interrupts on entry but exits without
restoring them.  However, both it and the arch/powerpc version have another
problem, which is that they use local_irq_disable/enable rather than
local_irq_save/restore, and they are called with interrupts disabled.

This fixes both problems; it changes a return to a break in the arch/ppc
version, and changes both versions to use local_irq_save/restore.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-08-30 16:10:47 +10:00
Paul Mackerras
e0d872d536 [POWERPC] Fix problem with time not advancing on 32-bit platforms
This fixes a problem introduced in 5db9fa9593.
The last_jiffy per-cpu variable is only 32 bits on 32-bit machines, but it
was being compared with a 64-bit quantity (tb_next_jiffy), which resulted in
time not advancing.

This fixes it by changing last_jiffy to be 64 bits on all platforms.  With
this, we no longer need tb_last_stamp as a 32-bit version of tb_last_jiffy,
so this gets rid of tb_last_stamp and we just use tb_last_jiffy instead.
This also fixes a bug when the boot cpu is not online, because using
tb_last_stamp could have caused the wrong timebase origin value to be used
when calculating the time of day.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-08-30 16:09:43 +10:00
Paul Mackerras
fea23bfefb [POWERPC] Restore copyright notice in arch/powerpc/kernel/fpu.S
This code got moved from head.S but the copyright notice on head.S didn't
get transferred with it.  Noticed by Cort Dougan <cort@fsmlabs.com>.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-08-30 14:45:35 +10:00
Will Schmidt
11e9ed43ca [POWERPC] Fix up ibm_architecture_vec definition
This problem was noticed by one of the Phyp firmware folks.
Our ibm,client-architecture-support call was failing.
This corrects the vector length parameters being passed in.

Signed-off-by: Will Schmidt <will_schmidt@vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-08-30 14:34:04 +10:00
Benjamin Herrenschmidt
006b64de60 [POWERPC] Make OF irq map code detect more error cases
Device-tree bugs on js20 with some versions of SLOF were causing the
interrupt for IDE to not be parsed correctly and fail to boot. This
patch adds a bit more sanity checking to the parser to detect some of
those errors and fail instead of returning bogus information.  The
powerpc PCI code can then trigger a fallback that works on those
machines.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-08-30 14:31:03 +10:00
Zang Roy-r61911
7233593b78 [POWERPC] Support for "weird" MPICs and fixup mpc7448_hpc2
This adds a new hardware information table for mpic. This enables
the mpic code to deal with mpic controllers with different register
layouts and hardware behaviours.

This introduces CONFIG_MPIC_WEIRD.  For boards with non standard mpic
controllers, select CONFIG_MPIC_WEIRD and add its hardware information
in the mpic_infos[] array.

TSI108/109 PIC takes the first index of weird hardware information
table.  :)  The table can be extended. The Tsi108/109 PIC looks like
standard OpenPIC but, in fact, is different in register mapping and
behavior.

The patch does not affect the behavior of standard mpic.  If
CONFIG_MPIC_WEIRD is not defined, the code is essentially identical to
the current code.

[benh@kernel.crashing.org:
This patch is a slightly cleaned up version of Zang Roy's support for
the TSI108 MPIC variant. It also fixes up MPC7448_hpc2 to use the new
version of the type macros and changes the way MPIC is selected in
Kconfig to better match what is done for other system devices.
]

Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-08-30 14:29:42 +10:00
David S. Miller
47f2c3604f [SPARC64]: Fix X server hangs due to large pages.
This problem was introduced by changeset
14778d9072

Unlike the hugetlb code paths, the normal fault code is not setup to
propagate PTE changes for large page sizes correctly like the ones we
make for I/O mappings in io_remap_pfn_range().

It is absolutely necessary to update all sub-ptes of a largepage
mapping on a fault.  Adding special handling for this would add
considerably complexity to tlb_batch_add().  So let's just side-step
the issue and forcefully dirty any writable PTEs created by
io_remap_pfn_range().

The only other real option would be to disable to large PTE code of
io_remap_pfn_range() and we really don't want to do that.

Much thanks to Mikael Pettersson for tracking down this problem and
testing debug patches.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-08-29 21:23:31 -07:00