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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc64: remove unused calc_npages() in iommu_common.h
sparc64: add the segment boundary checking to IOMMUs while merging SG entries
[SPARC64]: Don't open-code {get,put}_cpu_var() in flush_tlb_pending().
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Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Some IOMMUs allocate memory areas spanning LLD's segment boundary limit. It
forces low level drivers to have a workaround to adjust scatter lists that the
IOMMU builds. We are in the process of making all the IOMMUs respect the
segment boundary limits to remove such work around in LLDs.
SPARC64 IOMMUs were rewritten to use the IOMMU helper functions and the commit
89c94f2f70d093f59b55d3ea8042d13889169346 made the IOMMUs not allocate memory
areas spanning the segment boundary limit.
However, SPARC64 IOMMUs allocate memory areas first then try to merge them
(while some IOMMUs walk through all the sg entries to see how they can be
merged first and allocate memory areas). So SPARC64 IOMMUs also need the
boundary limit checking when they try to merge sg entries.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Noticed by Andrew Morton.
Signed-off-by: David S. Miller <davem@davemloft.net>
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* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.25:
sh: Fix up uImage compression type
remove include/asm-sh/floppy.h
sh: Fix TIF_USEDFPU clearing under FPU emulation.
sh: Fix occasional FPU register corruption under preempt.
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Fix up uImage compression type.
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This patch removes the unused include/asm-sh/floppy.h
(ARCH_MAY_HAVE_PC_FDC was not enabled).
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Presently with preempt enabled there's the possibility to be preempted
after the TIF_USEDFPU test and the register save, leading to bogus
state post-__switch_to(). Use an explicit preempt_disable()/enable()
pair around unlazy_fpu()/clear_fpu() to avoid this. Follows the x86
change.
Reported-by: Takuo Koguchi <takuo.koguchi.sw@hitachi.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/ralf/upstream-linus
* 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/ralf/upstream-linus:
[MIPS] XSS1500: Fix compilation
[MIPS] Bigsur: make defconfig more useful.
[MIPS] Alchemy: work around clock misdetection on early Au1000
[MIPS] Add missing 4KEC TLB refill handler
[MIPS] BCM1480: Fix PCI/HT IO access
[MIPS] Fix the installation condition of MIPS clocksource
[MIPS] Check for GCC r10k-cache-barrier support
[MIPS] I8253: Export i2853_lock to modules.
[MIPS] VPE loader: Check result of memory allocation.
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This patch fixes the compilation of the Au1000 XSS1500
board setup and irqmap code.
Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Work around the CPU clock miscalculation on Au1000DA/HA/HB due the
sys_cpupll register being write-only, i.e. actually do what the comment
before cal_r4off() function advertised for years but the code failed at.
This is achieved by just giving user a chance to define the clock
explicitly in the board config. via CONFIG_SOC_AU1000_FREQUENCY option,
defaulting to 396 MHz if the option is not given...
The patch is based on the AMD's big unpublished patch, the issue seems to
be an undocumented errata (or feature :-)...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Early 4KEc were MIPS32r1 and therefore need some love to get a TLB
refill handler.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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- removed check for enable HT-PCI bridges, because some CFE version
init only the needed one and scanning works even with disabled HT
links
- implemented I/O access behind HT PCI busses
- fixed pci_map for IO resource behind PCI bridge
Tested with E100 and Tulip driver.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Check whether gcc supports -mr10-cache-barrier=1 and issue a cleaner
error message if not. This option is needed to build working SGI IP28
kernels.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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This fixes:
ERROR: "i8253_lock" [drivers/input/misc/pcspkr.ko] undefined!
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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And while at it, make it a little cleaner. Issue originally reported by
Tiejun Chen (tiejun.chen@windriver.com).
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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* master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] 4875/1: Add MODULE_ALIAS to ixp4xx-beeper module
[ARM] 4873/1: Fix ITE 8152 interrupt demux
[ARM] 4878/1: Add oabi shim for fstatat64
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This patch fixes misprints in ITE 8152 interrupt demuxing
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Ccoreutils and other have started using fstatat64. Thus, we
need a shim for it if we want to support modern oldabi
userlands (such as Debian/arm/lenny) with EABI kernels.
See http://bugs.debian.org/462677
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Riku Voipio <riku.voipio@movial.fi>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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I believe http://bugzilla.kernel.org/show_bug.cgi?id=10318 is a false
positive. There's no way in which networking will be using highmem pages
here, so it won't be taking the KM_USER0 kmap slot, so there's no point in
performing these checks.
Cc: Pawel Staszewski <pstaszewski@artcom.pl>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: Christoph Lameter <clameter@sgi.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Really sad. We lose almost all real-life coverage of the debug tests
with this patch. Now it will only report problems for the cases where
people actually end up using a HIGHMEM page, not when they just _might_
use one. - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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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 missed hardware breakpoints across multiple threads
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There is a bug in the powerpc DABR (data access breakpoint) handling,
which can result in us missing breakpoints if several threads are trying
to break on the same address.
The circumstances are that do_page_fault() calls do_dabr(), this clears
the DABR (sets it to 0) and sets up the signal which will report to
userspace that the DABR was hit. The do_signal() code will restore the DABR
value on the way out to userspace.
If we reschedule before calling do_signal(), __switch_to() will check the
cached DABR value and compare it to the new thread's value, if they match
we don't set the DABR in hardware.
So if two threads have the same DABR value, and we schedule from one to
the other after taking the interrupt for the first thread hitting the DABR,
the second thread will run without the DABR set in hardware.
The cleanest fix is to move the cache update into set_dabr(), that way we
can't forget to do it.
Reported-by: Jan Kratochvil <jan.kratochvil@redhat.com>
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
lguest: comment documentation update.
lguest: Don't need comment terminator before disk section.
lguest: lguest.txt documentation fix
lguest: Add puppies which where previously missing.
virtio_pci: unregister virtio device at device remove
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Took some cycles to re-read the Lguest Journey end-to-end, fix some
rot and tighten some phrases.
Only comments change. No new jokes, but a couple of recycled old jokes.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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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] update pasemi_defconfig
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Disable GEN_RTC since it conflicts with the i2c rtc drivers registering,
besides that keep most of the new defaults.
Signed-off-by: Olof Johansson <olof@lixom.net>
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Linus noticed a second bug and an uncleanliness:
- we'd return on any instruction fetch fault
- we'd use both the value of 16 and the PF_INSTR symbol which are
the same and make no sense
the cleanup nicely unifies this piece of logic.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
xen: fix UP setup of shared_info
xen: fix RMW when unmasking events
x86, documentation: nmi_watchdog=2 works on x86_64
x86: stricter check in follow_huge_addr()
rdc321x: GPIO routines bugfixes
x86: ptrace.c: fix defined-but-unused warnings
x86: fix prefetch workaround
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We need to set up the shared_info pointer once we've mapped the real
shared_info into its fixmap slot. That needs to happen once the general
pagetable setup has been done. Previously, the UP shared_info was set
up one in xen_start_kernel, but that was left pointing to the dummy
shared info. Unfortunately there's no really good place to do a later
setup of the shared_info in UP, so just do it once the pagetable setup
has been done.
[ Stable: needed in 2.6.24.x ]
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stable Kernel <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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xen_irq_enable_direct and xen_sysexit were using "andw $0x00ff,
XEN_vcpu_info_pending(vcpu)" to unmask events and test for pending ones
in one instuction.
Unfortunately, the pending flag must be modified with a locked operation
since it can be set by another CPU, and the unlocked form of this
operation was causing the pending flag to get lost, allowing the processor
to return to usermode with pending events and ultimately deadlock.
The simple fix would be to make it a locked operation, but that's rather
costly and unnecessary. The fix here is to split the mask-clearing and
pending-testing into two instructions; the interrupt window between
them is of no concern because either way pending or new events will
be processed.
This should fix lingering bugs in using direct vcpu structure access too.
[ Stable: needed in 2.6.24.x ]
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stable <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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The first page of the compound page is determined in follow_huge_addr()
but then PageCompound() only checks if the page is part of a compound page.
PageHead() allows checking if this is indeed the first page of the
compound.
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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This patch fixes the use of GPIO routines which are in the PCI
configuration space of the RDC321x, therefore reading/writing
to this space without spinlock protection can be problematic.
We also now request and free GPIOs and support the MGB100
board, previous code was very AR525W-centric.
Signed-off-by: Volker Weiss <volker@tintuc.de>
Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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arch/x86/kernel/ptrace.c:548: warning: 'ptrace_bts_get_size' defined but not used
arch/x86/kernel/ptrace.c:558: warning: 'ptrace_bts_read_record' defined but not used
arch/x86/kernel/ptrace.c:607: warning: 'ptrace_bts_clear' defined but not used
arch/x86/kernel/ptrace.c:617: warning: 'ptrace_bts_drain' defined but not used
arch/x86/kernel/ptrace.c:720: warning: 'ptrace_bts_config' defined but not used
arch/x86/kernel/ptrace.c:788: warning: 'ptrace_bts_status' defined but not used
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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some early Athlon XP's and Opterons generate bogus faults on prefetch
instructions. The workaround for this regressed over .24 - reinstate it.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6
* 'avr32-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6:
avr32: Fix bug in early resource allocation code
avr32: Build fix for CONFIG_BUG=n
avr32: Work around byteswap bug in gcc < 4.2
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add_reserved_region() tries to keep the resource list sorted, so when
looking for a place to insert the new resource, it may break out
before the last entry.
When this happens, the list is broken in two because the sibling field
of the new entry doesn't point to the next resource. Fix it by
updating the new resource's sibling field appropriately.
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
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Don't include the BUG trap handling code when CONFIG_BUG is not set.
This fixes allnoconfig.
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (43 commits)
[IPSEC]: Fix BEET output
[ICMP]: Dst entry leak in icmp_send host re-lookup code (v2).
[AX25]: Remove obsolete references to BKL from TODO file.
[NET]: Fix multicast device ioctl checks
[IRDA]: Store irnet_socket termios properly.
[UML]: uml-net: don't set IFF_ALLMULTI in set_multicast_list
[VLAN]: Don't copy ALLMULTI/PROMISC flags from underlying device
netxen, phy/marvell, skge: minor checkpatch fixes
S2io: Handle TX completions on the same CPU as the sender for MIS-X interrupts
b44: Truncate PHY address
skge napi->poll() locking bug
rndis_host: fix oops when query for OID_GEN_PHYSICAL_MEDIUM fails
cxgb3: Fix lockdep problems with sge.reg_lock
ehea: Fix IPv6 support
dm9000: Support promisc and all-multi modes
dm9601: configure MAC to drop invalid (crc/length) packets
dm9601: add Hirose USB-100 device ID
Marvell PHY m88e1111 driver fix
netxen: fix rx dropped stats
netxen: remove low level tx lock
...
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IFF_ALLMULTI is an indication from the network stack to the driver
to disable multicast filters, drivers should never set it directly.
Since the UML networking device doesn't have any filtering capabilites,
it doesn't the set_multicast_list function at all, it is kept so userspace
can still issue SIOCADDMULTI/SIOCDELMULTI ioctls however.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
[SPARC64]: Define TASK_SIZE_OF()
[SPARC64]: flush_ptrace_access() needs preemption disable.
[SPARC64]: Update defconfig.
[SPARC64]: Fix allnoconfig build, ptrace.c missing CONFIG_COMPAT checks.
[SPARC64]: Fix __get_cpu_var in preemption-enabled area.
[SPARC64]: Fix sparse warnings in arch/sparc64/kernel/signal.c
[SPARC64]: Fix most sparse warnings in arch/sparc64/kernel/sys_sparc.c
[SPARC64]: Fix sparse warnings in arch/sparc64/kernel/time.c
[SPARC64]: Fix sparse warnings in arch/sparc64/kernel/ptrace.c
[SPARC64]: Fix sparse warnings in arch/sparc64/kernel/irq.c
[SPARC64]: Fix sparse warnings in arch/sparc64/kernel/iommu.c
[SPARC64]: Fix sparse errors in arch/sparc64/kernel/traps.c
[SPARC64]: Fix sparse warnings in arch/sparc64/kernel/{cpu,setup}.c
[SPARC64]: Adjust {TLBTEMP,TSBMAP}_BASE.
[SPARC64]: Make save_stack_trace() more efficient.
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Based upon a report by Mariusz Kozlowski.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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Reported by Mariusz Kozlowski.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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Sparse still doesn't like the funny cast we make from a scalar to a
"union semun" (which is correct by the C language and in particular
works with the sparc64 calling conventions, but sparse doesn't grok
that yet).
Signed-off-by: David S. Miller <davem@davemloft.net>
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