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Signed-off-by: Michal Simek <monstr@monstr.eu>
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Signed-off-by: Michal Simek <monstr@monstr.eu>
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Signed-off-by: Michal Simek <monstr@monstr.eu>
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Signed-off-by: Michal Simek <monstr@monstr.eu>
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Signed-off-by: Michal Simek <monstr@monstr.eu>
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This patches solve problem with inconsistency between
kernel and glibc
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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Signed-off-by: Michal Simek <monstr@monstr.eu>
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__va expect 32bit value but of_read_ulong(of_read_number)
returns 64bit value
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Signed-off-by: Michal Simek <monstr@monstr.eu>
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This patch is based on patch from Steve Magnani.
There were bug for compiled-in rootfs. We have to move
moving rootfs which is in BSS section to _ebss section
which is at the end of kernel and then clear bss section
not vice-versa.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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This patch fixed parsing early parameters because
current implementation does that early parse DTS
command line and then parse CMDLINE line which is compiled-in.
For case that DTS doesn't contain command line is
copied command line from kernel with is done in prom.c
that's why I can remove it from machine_early_init.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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A polarity reversal in the __KERNEL__ guard prevents the __HAVE_ARCH
flags from being defined in kernel compilation.
I noticed that there's now an option for assembly-optimized versions of
memcpy and memmove. I believe this may be buggy; when I turn it on, all
my printk output gets smashed together, as if the newlines aren't getting
copied.
Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Extra LDFLAGS from user space building may cause kernel failed
to compile.
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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This patch fix problem with bad zone initialization.
This bug wasn't perform because Microblaze doesn't
define CONFIG_ZONE_DMA and ZONE_NORMAL was 0 for this case
that's why free_area_init works with correct values.
Original message:
I believe that the switch from ZONE_DMA (== 0) to ZONE_NORMAL
broke the free area initialization.
Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Microblaze does not support the Linux DMA mapping API
at this point, so disable CONFIG_NO_DMA. This lets
us use the generic dma-mapping-broken.h implementation
instead of providing a different copy.
Any drivers that try to use DMA mapping now get
omitted from Kconfig or produce a link error, rather
than failing silently at run time.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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We need to define set_restore_sigmask() in order to
get pselect and ppoll. Also, the setup_frame function
can not be used when __NR_sigreturn is not defined.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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This changes the function prototypes in the checksum code
to have the usual prototypes, typically by turning int
arguments into __wsum.
Also change csum_partial_copy_from_user() to operate
on the right address space and export ip_fast_csum,
which is used in modular networking code.
The new version is now sparse-clean including endianess
checks.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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This function was actually causing harm, by hiding
errors about invalid sized get_user/put_user accesses.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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linux/types.h breaks the uclibc build, so don't
include it here.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Some device drivers call this, so add a macro
that pretends to do this. Since there is no
MMU support, it won't actually result in an
uncached mapping, though.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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The security subsystem has its own initcalls, which
need support in vmlinux.lds.S.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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This function is neither declared nor used anywhere
outside of ppc32, so remove it from microblaze.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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The whole point of the __bad_xchg declaration in
system.h is to give a linker error when a variable
of invalid size is passed to __xchg. The out
of line definition in traps.c defeats this purpose
and does not any value, so remove it here.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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The microblaze signal handling code gets some __user
pointers wrong, as shown by sparse.
This adds the annotations where appropriate and
change sys_rt_sigreturn to correctly pass a user
stack down to do_sigaltstack instead of a kernel
structure.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Some device drivers require the symbols _ebss, kernel_thread,
__page_offset or ___range_ok, so export them.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Signed-off-by: Michal Simek <monstr@monstr.eu>
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Signed-off-by: Michal Simek <monstr@monstr.eu>
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* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
MIPS: 64-bit: Fix system lockup.
MIPS: IP28: Change to build with -mr10k-cache-barrier=store
MIPS: IP22: Fix hang in power button interrupt handler
MIPS: IP32: Fix hang on shutdown in power button interrupt handler.
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* master.kernel.org:/home/rmk/linux-2.6-arm: (25 commits)
[ARM] 5519/1: amba probe: pass "struct amba_id *" instead of void *
[ARM] 5517/1: integrator: don't put clock lookups in __initdata
[ARM] 5518/1: versatile: don't put clock lookups in __initdata
[ARM] mach-l7200: fix spelling of SYS_CLOCK_OFF
[ARM] Double check memmap is actually valid with a memmap has unexpected holes V2
[ARM] realview: fix broadcast tick support
[ARM] realview: remove useless smp_cross_call_done()
[ARM] smp: fix cpumask usage in ARM SMP code
[ARM] 5513/1: Eurotech VIPER SBC: fix compilation error
[ARM] 5509/1: ep93xx: clkdev enable UARTS
ARM: OMAP2/3: Change omapfb to use clkdev for dispc and rfbi, v2
ARM: OMAP3: Fix HW SAVEANDRESTORE shift define
ARM: OMAP3: Fix number of GPIO lines for 34xx
[ARM] S3C: Do not set clk->owner field if unset
[ARM] S3C2410: mach-bast.c registering i2c data too early
[ARM] S3C24XX: Fix unused code warning in arch/arm/plat-s3c24xx/dma.c
[ARM] S3C64XX: fix GPIO debug
[ARM] S3C64XX: GPIO include cleanup
[ARM] nwfpe: fix 'floatx80_is_nan' sparse warning
[ARM] nwfpe: Add decleration for ExtendedCPDO
...
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The address range size calculation inside local_flush_tlb_kernel_range()
is being truncated by a too small size variable holder on 64-bit systems.
The truncated size can result in an erroneous tlbsize check that means we
sit spinning inside a loop trying to flush a hige number of TLB entries.
This is for all intents and purposes a system hang. Fix by using an
appropriately sized valiable to hold the size.
[Ralf: Greg's original patch submission identified the issue and fixed one
instance in tlb-r4k.c but there there were several more. For consistency
I also modified tlb-r3k.c even though that file is only used on 32-bit.]
Signed-off-by: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Richard Sandiford's new code for inserting the cache-barriers, for GCC
4.3 and above and already incorporated in the current GCC-release, uses
a slightly different option-syntax.
Signed-off-by: peter fuerst <post@pfrst.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The hang was caused by the use of disable_irq() from the interrupt handler
itself. Fixed by the use of disable_irq_nosync(). The issue was
triggered by:
commit 3aa551c9b4c40018f0e261a178e3d25478dc04a9
Author: Thomas Gleixner <tglx@linutronix.de>
Date: Mon Mar 23 18:28:15 2009 +0100
genirq: add threaded interrupt handler support
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The hang was caused by the use of disable_irq() from the interrupt handler
itself. Fixed by the use of disable_irq_nosync(). The issue was
triggered by:
commit 3aa551c9b4c40018f0e261a178e3d25478dc04a9
Author: Thomas Gleixner <tglx@linutronix.de>
Date: Mon Mar 23 18:28:15 2009 +0100
genirq: add threaded interrupt handler support
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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* 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Fix kind-of-intr checking against number of interrupts
microblaze: Update Microblaze defconfig
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc: Explicit alignment for .data.cacheline_aligned
powerpc/ps3: Update ps3_defconfig
powerpc/ftrace: Fix constraint to be early clobber
powerpc/ftrace: Use pr_devel() in ftrace.c
powerpc: Do not assert pte_locked for hugepage PTE entries
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Remove the __initdata annotation for the clock lookups, since they
will be needed when loading modules which use clk_get().
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Remove the __initdata annotation for the clock lookups, since they
will be needed when loading modules which use clk_get().
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Fix performance regression caused by paravirt_ops on native kernels
xen: use header for EXPORT_SYMBOL_GPL
x86, 32-bit: fix kernel_trap_sp()
x86: fix percpu_{to,from}_op()
x86: mtrr: Fix high_width computation when phys-addr is >= 44bit
x86: Fix false positive section mismatch warnings in the apic code
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
tracing: Append prompt in /debug/tracing/README file
x86/function-graph: fix constraint for recording old return value
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+ Fix typographic fault.
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Signed-off-by: Michal Simek <monstr@monstr.eu>
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Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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holes V2
pfn_valid() is meant to be able to tell if a given PFN has valid memmap
associated with it or not. In FLATMEM, it is expected that holes always
have valid memmap as long as there is valid PFNs either side of the hole.
In SPARSEMEM, it is assumed that a valid section has a memmap for the
entire section.
However, ARM and maybe other embedded architectures in the future free
memmap backing holes to save memory on the assumption the memmap is never
used. The page_zone linkages are then broken even though pfn_valid()
returns true. A walker of the full memmap must then do this additional
check to ensure the memmap they are looking at is sane by making sure the
zone and PFN linkages are still valid. This is expensive, but walkers of
the full memmap are extremely rare.
This was caught before for FLATMEM and hacked around but it hits again for
SPARSEMEM because the page_zone linkages can look ok where the PFN linkages
are totally screwed. This looks like a hatchet job but the reality is that
any clean solution would end up consumning all the memory saved by punching
these unexpected holes in the memmap. For example, we tried marking the
memmap within the section invalid but the section size exceeds the size of
the hole in most cases so pfn_valid() starts returning false where valid
memmap exists. Shrinking the size of the section would increase memory
consumption offsetting the gains.
This patch identifies when an architecture is punching unexpected holes
in the memmap that the memory model cannot automatically detect and sets
ARCH_HAS_HOLES_MEMORYMODEL. At the moment, this is restricted to EP93xx
which is the model sub-architecture this has been reported on but may expand
later. When set, walkers of the full memmap must call memmap_valid_within()
for each PFN and passing in what it expects the page and zone to be for
that PFN. If it finds the linkages to be broken, it assumes the memmap is
invalid for that PFN.
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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I don't think anything guarantees that the objects in data.page_aligned
are a multiple of PAGE_SIZE, thus the section may end on any boundary.
So the following section, .data.cacheline_aligned needs an explicit
alignment.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Refresh and set these options:
CONFIG_SYSFS_DEPRECATED_V2: y -> n
CONFIG_INPUT_JOYSTICK: y -> n
CONFIG_HID_SONY: n -> m
CONFIG_RTC_DRV_PS3: - -> m
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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After upgrading my distcc boxes from gcc 4.2.2 to 4.4.0, the function
graph tracer broke. This was discovered on my x86 boxes.
The issue is that gcc used the same register for an output as it did for
an input in an asm statement. I first thought this was a bug in gcc and
reported it. I was notified that gcc was correct and that the output had
to be flagged as an "early clobber".
I noticed that powerpc had the same issue and this patch fixes it.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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pr_debug() can now result in code being generated even when #DEBUG
is not defined. That's not really desirable in the ftrace code
which we want to be snappy.
With CONFIG_DYNAMIC_DEBUG=y:
size before:
text data bss dec hex filename
3334 672 4 4010 faa arch/powerpc/kernel/ftrace.o
size after:
text data bss dec hex filename
2616 360 4 2980 ba4 arch/powerpc/kernel/ftrace.o
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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With CONFIG_DEBUG_VM, an assertion is made when changing the protection
flags of a PTE that the PTE is locked. Huge pages use a different pagetable
format and the assertion is bogus and will always trigger with a bug looking
something like
Unable to handle kernel paging request for data at address 0xf1a00235800006f8
Faulting instruction address: 0xc000000000034a80
Oops: Kernel access of bad area, sig: 11 [#1]
SMP NR_CPUS=32 NUMA Maple
Modules linked in: dm_snapshot dm_mirror dm_region_hash
dm_log dm_mod loop evdev ext3 jbd mbcache sg sd_mod ide_pci_generic
pata_amd ata_generic ipr libata tg3 libphy scsi_mod windfarm_pid
windfarm_smu_sat windfarm_max6690_sensor windfarm_lm75_sensor
windfarm_cpufreq_clamp windfarm_core i2c_powermac
NIP: c000000000034a80 LR: c000000000034b18 CTR: 0000000000000003
REGS: c000000003037600 TRAP: 0300 Not tainted (2.6.30-rc3-autokern1)
MSR: 9000000000009032 <EE,ME,IR,DR> CR: 28002484 XER: 200fffff
DAR: f1a00235800006f8, DSISR: 0000000040010000
TASK = c0000002e54cc740[2960] 'map_high_trunca' THREAD: c000000003034000 CPU: 2
GPR00: 4000000000000000 c000000003037880 c000000000895d30 c0000002e5a2e500
GPR04: 00000000a0000000 c0000002edc40880 0000005700000393 0000000000000001
GPR08: f000000011ac0000 01a00235800006e8 00000000000000f5 f1a00235800006e8
GPR12: 0000000028000484 c0000000008dd780 0000000000001000 0000000000000000
GPR16: fffffffffffff000 0000000000000000 00000000a0000000 c000000003037a20
GPR20: c0000002e5f4ece8 0000000000001000 c0000002edc40880 0000000000000000
GPR24: c0000002e5f4ece8 0000000000000000 00000000a0000000 c0000002e5f4ece8
GPR28: 0000005700000393 c0000002e5a2e500 00000000a0000000 c000000003037880
NIP [c000000000034a80] .assert_pte_locked+0xa4/0xd0
LR [c000000000034b18] .ptep_set_access_flags+0x6c/0xb4
Call Trace:
[c000000003037880] [c000000003037990] 0xc000000003037990 (unreliable)
[c000000003037910] [c000000000034b18] .ptep_set_access_flags+0x6c/0xb4
[c0000000030379b0] [c00000000014bef8] .hugetlb_cow+0x124/0x674
[c000000003037b00] [c00000000014c930] .hugetlb_fault+0x4e8/0x6f8
[c000000003037c00] [c00000000013443c] .handle_mm_fault+0xac/0x828
[c000000003037cf0] [c0000000000340a8] .do_page_fault+0x39c/0x584
[c000000003037e30] [c0000000000057b0] handle_page_fault+0x20/0x5c
Instruction dump:
7d29582a 7d200074 7800d182 0b000000 3c004000 3960ffff 780007c6 796b00c4
7d290214 7929a302 1d290068 7d6b4a14 <800b0010> 7c000074 7800d182 0b000000
This patch fixes the problem by not asseting the PTE is locked for VMAs
backed by huge pages.
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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