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Add support for processors that have cache-aliasing issues, such as
the Stretch S5000 processor. Cache-aliasing means that the size of
the cache (for one way) is larger than the page size, thus, a page
can end up in several places in cache depending on the virtual to
physical translation. The method used here is to map a user page
temporarily through the auto-refill way 0 and of of the DTLB.
We probably will want to revisit this issue and use a better
approach with kmap/kunmap.
Signed-off-by: Chris Zankel <chris@zankel.net>
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Add kernel module support.
Signed-off-by: Chris Zankel <chris@zankel.net>
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Newer processor versions starting with Xtensa6/LX2 support an 'executable'
bit for memory pages. This bit replaces the 'valid' bit, so it must be
always set to one for older processor versions. To mark a page invalid, we now
set the cache-attributes to b11, which is backward compatible.
Signed-off-by: Chris Zankel <chris@zankel.net>
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Initialize semaphore_wake_lock.
Signed-off-by: Chris Zankel <chris@zankel.net>
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The timer code could have missed a tick.
Signed-off-by: Chris Zankel <chris@zankel.net>
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Xtensa passes long long arguments in a even/odd register pair,
so we also need to shuffle the arguments when passed through the
system call to avoid an empty argument register.
Signed-off-by: Chris Zankel <chris@zankel.net>
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The string-io functions (outs{bwl}, ins{bwl}) are independent from
the PCI option and should be in a separate file.
Signed-off-by: Chris Zankel <chris@zankel.net>
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Move all initialization structures for the initial task to it's own file.
Signed-off-by: Chris Zankel <chris@zankel.net>
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We also need to set the freestanding option for GCC in the CFLAGS.
Signed-off-by: Chris Zankel <chris@zankel.net>
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A variable was defined with __init instead of __initdata and
the function accessing that variable wasn't initialized with
__init.
Signed-off-by: Chris Zankel <chris@zankel.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (30 commits)
ACPI: work around duplicate name "VID" problem on T61
acpiphp_ibm: add missing '\n' to error message
ACPI: add dump_stack() to trace acpi_format_exception programming errors
make drivers/acpi/scan.c:create_modalias() static
ACPI: Fix a warning of discarding qualifiers from pointer target type
ACPI: "ACPI handle has no context!" should be KERN_DEBUG
ACPI video hotkey: export missing ACPI video hotkey events via input layer
ACPI: Validate XSDT, use RSDT if XSDT fails
ACPI: /proc/acpi/thermal_zone trip points are now read-only, mark them as such
ACPI: fix ia64 allnoconfig build
PNP: remove null pointer checks
PNP: remove MODULE infrastructure
ISAPNP: removed unused isapnp_detected and ISAPNP_DEBUG
PNPACPI: remove unnecessary casts of "void *"
PNPACPI: simplify irq_flags()
PNP: fix up after Lindent
ACPI: enable GPEs before calling _WAK on resume
asus-laptop: Fix rmmod of asus_laptop
sony-laptop: call sonypi_compat_init earlier
sony-laptop: enable Vaio FZ events
...
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git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-x86setup
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-x86setup:
[x86 setup] Make sure AH=00h when setting a video mode
[x86 setup] Volatilize asm() statements
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* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6.23:
sh: missing symbol fix for sh4-202
sh: Fix DSP opcode regression for SH3-DSP parts.
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* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched:
sched: tweak the sched_runtime_limit tunable
sched: skip updating rq's next_balance under null SD
sched: fix broken SMT/MC optimizations
sched: accounting regression since rc1
sched: fix sysctl directory permissions
sched: sched_clock_idle_[sleep|wakeup]_event()
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Include linux/fs.h to get the prototype for do_pipe().
Build fix.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Include linux/fs.h to get the prototype for getname().
Build fix.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Passing a u8 into a register doesn't mean gcc will zero-extend it.
Also, don't depend on thhe register not to change.
Per bug report from Saul Tamari.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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asm() statements need to be volatile when:
a. They have side effects (other than value returned).
b. When the value returned can vary over time.
c. When they have ordering constraints that cannot be expressed to gcc.
In particular, the keyboard and timer reads were violating constraint (b),
which resulted in the keyboard/timeout poll getting
loop-invariant-removed when compiling with gcc 4.2.0.
Thanks to an anonymous bug reporter for pointing this out.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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construct a more or less wall-clock time out of sched_clock(), by
using ACPI-idle's existing knowledge about how much time we spent
idling. This allows the rq clock to work around TSC-stops-in-C2,
TSC-gets-corrupted-in-C3 type of problems.
( Besides the scheduler's statistics this also benefits blktrace and
printk-timestamps as well. )
Furthermore, the precise before-C2/C3-sleep and after-C2/C3-wakeup
callbacks allow the scheduler to get out the most of the period where
the CPU has a reliable TSC. This results in slightly more precise
task statistics.
the ACPI bits were acked by Len.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Len Brown <len.brown@intel.com>
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Xen i386 xen-head.S fix sections mixup
xen-head.S does not come back to the data section, leaving the text section
as current section. It causes problems with a slightly enhanced DEBUG_RODATA
that supports CONFIG_HOTPLUG and bringing a CPU up after the text has been
marked read-only: reference to early_gdt_descr causes a page fault.
Updates:
- It should be using pushsection/popsection.
- Actually, the push/popsections around the ELFNOTEs are redundant; ELFNOTE()
does its own push/popsection to put things into the appropriate .note* section
anyway.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Acked-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Chris Wright <chrisw@sous-sol.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The previous patch which limited the number of sectors in a single request
to a COWed device was correct in concept, but the limit was implemented in
the wrong place.
By putting it in ubd_add, it covered the cases where the COWing was
specified on the command line. However, when the command line only has the
COW file specified, the fact that it's a COW file isn't known until it's
opened, so the limit is missed in these cases.
This patch moves the sector limit from ubd_add to ubd_open_dev.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Don't include RODATA into text segment as it includes the kallsyms data and
can cause spurious link failures (layout differences can change the number of
symbols in kallsyms, i.e. when a symbol is equal to _etext it's not
included).
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Remove an unnecessary m68k_memoffset export and initialization
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Kill a superfluous extern declaration
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Build error fix.
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
[SPARC32]: Revert f642b263800e6e57c377d630be6d2a999683b579.
[SPARC64]: Need to clobber global reg vars in switch_to().
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* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
[S390] Change atomic_read/set to inline functions with barrier semantics.
[S390] kprobes: fix instruction length calculation
[S390] hypfs: inode corruption due to missing locking
[S390] disassembler: fix b2 opcodes like srst, bsg, and others
[S390] vmur: fix reference counting for vmur device structure
[S390] vmur: fix diag14 exceptions with addresses > 2GB.
[S390] qdio: Refresh buffer states for IQDIO Asynchronous output queue
[S390] qdio: fix EQBS handling on CCQ96
[S390] cio: change confusing message in cmf.
[S390] cio: dont forget to set last slot to NULL in ccw_uevent().
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Touching vmalloc memory in the middle of a lazy mode update can generate
a kernel PDE update, which must be flushed immediately. The fix is to
leave lazy mode when doing a vmalloc sync.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Acked-by: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Placing a kprobe on "bc" instruction (s390/s390x) can cause an oops.
The instruction length is encoded into the first two bits of the s390
instruction. Kprobe is incorrectly computing the instruction length.
The instruction length is used for determining what type of "fix-up" is
needed for conditional branch instruction. The problem can bee seen by
placing a kprobe on a "bc" instruction that will not branch. The
results is that Kprobe incorrectly computes the new instruction
pointer (psw.addr) after single stepping the instruction. The problem
is corrected with this patch.
Signed-off-by: David Wilder <dwilder@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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hypfs removes the whole hypfs directory tree and creates a new one, when a
process triggers an update by writing to the "update" attribute. When removing
and creating files, it is necessary to lock the inode of the parent directory
where the files live. Currently hypfs does not lock the parent inode, which
can lead to inode corruption. This patch:
* Introduces correct locking
* Fixes i_nlink reference counting for inodes, when creating directories
* Adds info printk, when hypfs filesystem has been mounted
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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The instruction table for b2 opcodes was missing an opfrag value
for the cpya instruction. All instructions specified after cpya
were not considered by the disassembler. The fix is simple and
obvious - add the opfrag field to the cpya instruction.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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There are several s390 diagnose calls, which must be executed below the
2GB memory boundary. In order to enforce this, those diagnoses must be
compiled into the kernel. Currently diag 14 can be called within the
vmur kernel module from addresses above 2GB. This leads to specification
exceptions. This patch moves diag10, diag14 and diag210 into the new
diag.c file.
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
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This patch adds a plat_irq_setup() symbol for sh4-202. Without
this fix it is impossible to build a working kernel using the
microdev_defconfig.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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The initial user manuals for MPC8544/8533 had some issues with properly
documenting the device IDs for MPC8544/8533. These processors are almost
identical and both show up on the reference boards.
Fix up the quirks for PCIe support to handle MPC8533/E.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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I did some testing and found quite a lot of problems (doesn't
boot at all on non NUMA and misassigns cores on Opteron systems).
Mark it as experimental and warn against its use for now.
It's still default y for SUMMIT/NUMAQ because it'll presumably
work on these systems.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Older versions of binutils do not support -Wa,-isa= tuning, which is
something we rely on for enabling DSP opcode support on the newer
parts. SH3-DSP parts can still be handled with -Wa,-dsp even if the
newer parts require the newer versions of binutils for supporting the
new opcodes.
This was broken in -rc1 when the SH4AL-DSP support was being reworked,
and is needed to get SH3-DSP working with older toolchains again.
Reported-by: Markus Brunner <super.firetwister@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This causes boot failures for some people.
It looks like in fact that some SILO provided
ramdisk images should not be KERNBASE normalized.
Signed-off-by: David S. Miller <davem@davemloft.net>
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* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6:
ide-disk: workaround for buggy HPA support on ST340823A (take 3)
hpt34x: fix CONFIG_HPT34X_AUTODMA=n handling
triflex: add missing ->dma_base check
pdc202xx_old: add missing ->dma_base check
pdc202xx_new: add missing ->dma_base check
cs5530: add missing ->dma_base check
ide: ide_config_drive_speed() bugfixes
ide: add cable detection for early UDMA66 devices (take 3)
ide-pmac: fix drive->init_speed reporting
ide: config_drive_for_dma() fixes
ide-cris: fix ->set_pio_mode method to set transfer mode on the device
ide: fix hidden dependencies on CONFIG_IDE_GENERIC
ide: make CONFIG_IDE_GENERIC default to N
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git://git.kernel.org/pub/scm/linux/kernel/git/galak/powerpc
* 'fixes-2.6.23' of git://git.kernel.org/pub/scm/linux/kernel/git/galak/powerpc:
[POWERPC] Fix 8xx compile failure
[POWERPC] Fix FSL BookE machine check reporting
[POWERPC] Fix interrupt routing and setup of ULI M1575 on FSL boards
[POWERPC] Add interrupt resource for RTC CMOS driver
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In MPS mode, "nosmp" and "maxcpus=0" boot a UP kernel with IOAPIC disabled.
However, in ACPI mode, these parameters didn't completely disable
the IO APIC initialization code and boot failed.
init/main.c:
Disable the IO_APIC if "nosmp" or "maxcpus=0"
undefine disable_ioapic_setup() when it doesn't apply.
i386:
delete ioapic_setup(), it was a duplicate of parse_noapic()
delete undefinition of disable_ioapic_setup()
x86_64:
rename disable_ioapic_setup() to parse_noapic() to match i386
define disable_ioapic_setup() in header to match i386
http://bugzilla.kernel.org/show_bug.cgi?id=1641
Acked-by: Andi Kleen <ak@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
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Some host drivers depend on CONFIG_IDE_GENERIC to do the probing but their
config options lack explicit dependencies on IDE_GENERIC. In the long-term
these host drivers should be fixed to do the probing themselves but for now
fix them by making their config options select CONFIG_IDE_GENERIC.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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With commit ab144f5ec64c42218a555ec1dbde6b60cf2982d6 the patching code
now collects the complete new instruction stream into a temp buffer
before finally patching in the new insns. In some cases the paravirt
patchers will choose to leave the patch site unpatched (length mismatch,
clobbers mismatch, etc).
This causes the new patching code to copy an uninitialized temp buffer,
i.e. garbage, to the callsite. Simply make sure to always initialize
the buffer with the original instruction stream. A better fix is to
audit all the patchers and return proper length so that apply_paravirt()
can skip copies when we leave the patch site untouched.
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] 4549/1: KS8695: Fix build errors
[ARM] 4546/1: s3c2410: fix architecture typo for s3c2442
[ARM] 4544/1: arm: fix section mismatch in pxa fb
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Very old 64bit binutils have .cfi_startproc/endproc, but
no .cfi_rel_offset. Check for .cfi_rel_offset too.
Cc: Jan Beulich <jbeulich@novell.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Very old binutils (2.12.90...) seem to have trouble with newlines
in assembler macro invocation. They put them into the resulting
argument expansion. In this case this lead to a parse error because
a .rept expression ended up spread over multiple lines. Change the PMDS()
invocation to a single line.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fixed wrong expression which enabled watchdogs even if nmi_watchdog kernel
parameter wasn't set. This regression got slightly introduced with commit
b7471c6da94d30d3deadc55986cc38d1ff57f9ca.
Introduced NMI_DISABLED (-1) which allows to switch the value of NMI_DEFAULT
without breaking the APIC NMI watchdog code (again).
Fixes:
https://bugzilla.novell.com/show_bug.cgi?id=298084
http://bugzilla.kernel.org/show_bug.cgi?id=7839
And likely some more nmi_watchdog=0 related issues.
Signed-off-by: Daniel Gollub <dgollub@suse.de>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This should fix an oops with PCMCIA PATA devices
http://bugzilla.kernel.org/show_bug.cgi?id=8424
This is not a full fix for the problem, but probably
still the right thing to do.
[ I'm almost certain it's *not* the right thing to do, but it avoids an
oops, and I want comments from others on what the right thing would
actually be.. I suspect we should just remove the use of dma_mask
entirely in this function, and just use coherent_dma_mask. - Linus ]
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (edited MACINTOSH_DRIVERS per Geert Uytterhoeven's remark)
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh64-2.6:
sh64: arch/sh64/kernel/setup.c: duplicate include removal.
sh64: arch/sh64/kernel/signal.c: duplicate include removal
sh64: Add missing dma_sync_single_for_*().
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