04 Oct, 2007
3 commits
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* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] Terminally fix local_{dec,sub}_if_positive
[MIPS] Type proof reimplementation of cmpxchg.
[MIPS] pg-r4k.c: Fix a typo in an R4600 v2 erratum workaround -
Cc: Kalle Pokki
Signed-off-by: Michael Hennerich
Signed-off-by: Bryan Wu -
Signed-off-by: Michael Hennerich
Signed-off-by: Bryan Wu
03 Oct, 2007
3 commits
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Restore a load from KSEG1 done as a workaround for an R4600 v2
erratum, dropped with 211be16de99a7424e66c0b6c0d00e2c970508ac2.Signed-off-by: Maciej W. Rozycki
Signed-off-by: Ralf Baechle -
* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
[SPARC64]: Fix missing load-twin usage in Niagara-1 memcpy.
[SPARC64]: Fix put_user() calls in binfmt_aout32.c
[SPARC]: Fix EBUS use of uninitialized variable. -
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] Fix xics set_affinity code
02 Oct, 2007
4 commits
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For the case where the source is not aligned modulo 8
we don't use load-twins to suck the data in and this
kills performance since normal loads allocate in the
L1 cache (unlike load-twin) and thus big memcpys swipe
the entire L1 D-cache.We need to allocate a register window to implement this
properly, but that actually simplifies a lot of things
as a nice side-effect.Signed-off-by: David S. Miller
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* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] vmlinux.lds.S: Handle note sections
[MIPS] Fix value of O_TRUNC -
For some reason old binutils genertate larger headers so increase the text
offset of the vdso to avoid linker errors.Roland McGrath explains:
"There are extra symbols in the '.dynsym' section that are responsible
for the size difference (They also cause corresponding inflation in
'.gnu.version')Older ld's wrongly generated these unneeded symbols in .dynsym. This
was fixed not all that long ago (2006); binutils-2.17.50.0.6 might be
the first fixed version, but I have not verified for sure where the
cutoff was.The unneeded symbols et al from old ld add almost 700 bytes excess.
This limits fairly tightly the amount by which the actual text and
data in the vDSO can grow in the future without pushing the whole
file over 4kb. If it does grow later on, we should consider changing
the layout with a config option or something to pack it better
without that padding, when building the kernel with newer binutils."Signed-off-by: Andi Kleen
Cc: Roland McGrath
Cc: Badari Pulavarty
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
On a POWER6 machine running 2.6.23-rc8 I sometimes see the following error:
xics_set_affinity: No online cpus in the mask 00000000,00000000,00000000,00000001 for irq 20
In a desperate attempt to get a changelog entry in 2.6.23, I took a look
into it.It turns out we are passing a real and not a virtual irq into
get_irq_server. This works for the case where hwirq < NR_IRQS and we
set virq = hwirq. In my case however hwirq = 590082 and we try and
access irq_desc[590082], slightly past the end at 512 entries.Lucky we ship lots of memory with our machines.
Signed-off-by: Anton Blanchard
Signed-off-by: Paul Mackerras
01 Oct, 2007
3 commits
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Store any note sections after the exception tables like the other
architectures do. This is required for .note.gnu.build-id emitted from
binutils 2.18 onwards if nothing else.Signed-off-by: Maciej W. Rozycki
Signed-off-by: Ralf Baechle -
argv and envp are pointers to u32's in userspace, so don't
try to put_user() a NULL to them.Aparently gcc-4.2.x now warns about this, and since we use
-Werror for arch/sparc64 code, this breaks the build.Signed-off-by: David S. Miller
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Fix the following (valid) section warnings:
WARNING: vmlinux.o(.text+0xf7b5c): Section mismatch: reference to .init.text:pcibios_fixup_bus (between 'pci_scan_child_bus' and 'pci_scan_bridge')
WARNING: vmlinux.o(.text+0xfc5f4): Section mismatch: reference to .init.text:pcibios_resource_to_bus (between 'pci_map_rom' and 'pci_unmap_rom')
WARNING: vmlinux.o(.text+0xfc824): Section mismatch: reference to .init.text:pcibios_resource_to_bus (between 'pci_update_resource' and 'pci_claim_resource')
WARNING: vmlinux.o(.text+0xfd6d8): Section mismatch: reference to .init.text:pcibios_resource_to_bus (between 'pci_setup_cardbus' and 'find_free_bus_resource')
WARNING: vmlinux.o(.text+0xfd730): Section mismatch: reference to .init.text:pcibios_resource_to_bus (between 'pci_setup_cardbus' and 'find_free_bus_resource')
WARNING: vmlinux.o(.text+0xfd788): Section mismatch: reference to .init.text:pcibios_resource_to_bus (between 'pci_setup_cardbus' and 'find_free_bus_resource')
WARNING: vmlinux.o(.text+0xfd7e0): Section mismatch: reference to .init.text:pcibios_resource_to_bus (between 'pci_setup_cardbus' and 'find_free_bus_resource')
WARNING: vmlinux.o(.text+0xfe024): Section mismatch: reference to .init.text:pcibios_resource_to_bus (between 'pci_bus_assign_resources' and 'sys_pciconfig_read')
WARNING: vmlinux.o(.text+0xfe0f4): Section mismatch: reference to .init.text:pcibios_resource_to_bus (between 'pci_bus_assign_resources' and 'sys_pciconfig_read')
WARNING: vmlinux.o(.text+0xfe17c): Section mismatch: reference to .init.text:pcibios_resource_to_bus (between 'pci_bus_assign_resources' and 'sys_pciconfig_read')Signed-off-by: Russell King
29 Sep, 2007
6 commits
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* 'for-2.6.23' of master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc:
[POWERPC] mpc8349emitx.dts: Setup USB-DR for peripheral mode.
[POWERPC] Fix mpc834x USB-MPH configuration.
[POWERPC] Fix cpm_uart driver for cpm1 machines
[PPC] Fix cpm_dpram_addr returning phys mem instead of virt mem
[POWERPC] Fix copy'n'paste typo in commproc.c -
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] Fix fallocate on o32 binary compat ABI
[MIPS] Fix CONFIG_BUILD_ELF64 kernels with symbols in CKSEG0.
[MIPS] IP32: Fix initialization of UART base addresses. -
MIPS was mistakenly forgetting to use the fallocate compat wrapper, which
I noticed while cleaning up all the duplicate fallocate wrappers.Signed-off-by: Kyle McMartin
Signed-off-by: Ralf Baechle -
Signed-off-by: Ralf Baechle
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-x86setup:
[x86 setup] Correct the SMAP check for INT 0x15, AX=0xe820 -
The e820 probe code was checking %edx, not %eax, for the SMAP
signature on return. This worked on *almost* all systems, since %edx
still contained SMAP from the call on entry, but on a handful of
systems it failed -- plus, we would have missed real mismatches.The error output is "=d" to make sure gcc knows %edx is clobbered
here.Signed-off-by: H. Peter Anvin
28 Sep, 2007
6 commits
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Setup dr_mode for USB-DR to peripheral as the default (host mode) doesn't make
much sense for the mini-AB connector on the ITX board.Peripheral mode is preferable to OTG as the fsl_usb2_udc.c driver doesn't yet
properly support it.Signed-off-by: Peter Korsgaard
Signed-off-by: Kumar Gala -
mpc834x USB-MPH configuration got broken by commit
6f442560021aecf08658e26ed9a37e6928ef0fa1. The selection bits in SICRL
should be cleared rather than set to configure the USB MUXes for the MPH.Signed-off-by: Peter Korsgaard
Signed-off-by: Kumar Gala -
cpm_dpram_addr returns physical memory of the DP RAM instead of
iomapped virtual memory. As there usually is a 1:1 MMU map of
the IMMR area, this is often not noticed. However, cpm_dpram_phys
assumes this iomapped virtual memory and returns garbage on the
1:1 mapped memory causing CPM1 uart console to fail.This patch fixes the problem (copied from the powerpc tree).
Signed-off-by: Jochen Friedrich
Signed-off-by: Kumar Gala -
The powerpc version of commproc.c exports cpm_dpram_addr twice
and cpm_dpram_phys not at all due to a typo. This patch fixes this
problem.CC arch/powerpc/sysdev/commproc.o
arch/powerpc/sysdev/commproc.c:398: error: redefinition of '__kcrctab_cpm_dpram_addr'
arch/powerpc/sysdev/commproc.c:392: error: previous definition of '__kcrctab_cpm_dpram_addr' was here
arch/powerpc/sysdev/commproc.c:398: error: redefinition of '__kstrtab_cpm_dpram_addr'
arch/powerpc/sysdev/commproc.c:392: error: previous definition of '__kstrtab_cpm_dpram_addr' was here
arch/powerpc/sysdev/commproc.c:398: error: redefinition of '__ksymtab_cpm_dpram_addr'
arch/powerpc/sysdev/commproc.c:392: error: previous definition of '__ksymtab_cpm_dpram_addr' was here
make[1]: *** [arch/powerpc/sysdev/commproc.o] Error 1
make: *** [arch/powerpc/sysdev] Error 2Signed-off-by: Jochen Friedrich
Signed-off-by: Kumar Gala -
Signed-off-by: Ralf Baechle
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If of_get_property() fails, it returns NULL and the 'len'
parameter is undefined. So we need to explicitly set len
to zero in such cases.Noticed by Al Viro.
Signed-off-by: David S. Miller
27 Sep, 2007
5 commits
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-x86setup:
[x86 setup] Handle case of improperly terminated E820 chain -
This reverts commit e66485d747505e9d960b864fc6c37f8b2afafaf0, since
Rafael Wysocki noticed that the change only works for his in -mm, not in
mainline (and that both "noapictimer" _and_ "apicmaintimer" are broken
on his hardware, but that's apparently not a regression, just a symptom
of the same issue that causes the automatic apic timer disable to not
work).It turns out that it really doesn't work correctly on x86-64, since
x86-64 doesn't use the generic clock events for timers yet.Thanks to Rafal for testing, and here's the ugly details on x86-64 as
per Thomas:"I just looked into the code and the logic vs. noapictimer on SMP is
completely broken.On i386 the noapictimer option not only disables the local APIC
timer, it also registers the CPUs for broadcasting via IPI on SMP
systems.The x86-64 code uses the broadcast only when the local apic timer is
active, i.e. "noapictimer" is not on the command line. This defeats
the whole purpose of "noapictimer". It should be there to make boxen
work, where the local APIC timer actually has a hardware problem,
e.g. the nx6325.The current implementation of x86_64 only fixes the ACPI c-states
related problem where the APIC timer stops in C3(2), nothing else.On nx6325 and other AMD X2 equipped systems which have the C1E
enabled we run into the following:PIT keeps jiffies (and the system) running, but the local APIC timer
interrupts can get out of sync due to this C1E effect.I don't think this is a critical problem, but it is wrong
nevertheless.I think it's safe to revert the C1E patch and postpone the fix to the
clock events conversion."On further reflection, Thomas noted:
"It's even worse than I thought on the first check:
"noapictimer" on the command line of an SMP box prevents _ONLY_ the
boot CPU apic timer from being used. But the secondary CPU is still
unconditionally setting up the APIC timer and uses the non
calibrated variable calibration_result, which is of course 0, to
setup the APIC timer. Wreckage guaranteed."so we'll just have to wait for the x86 merge to hopefully fix this up
for x86-64.Tested-and-requested-by: Rafael J. Wysocki
Acked-by: Thomas Gleixner
Signed-off-by: Linus Torvalds -
At least one system (a Geode system with a Digital Logic BIOS) has
been found which suddenly stops reporting the SMAP signature when
reading the E820 memory chain. We can't know what, exactly, broke in
the BIOS, so if we detect this situation, declare the E820 data
unusable and fall back to E801.Also, revert to original behavior of always probing all memory
methods; that way all the memory information is available to the
kernel.Signed-off-by: H. Peter Anvin
Cc: Jordan Crouse
Cc: Joerg Pommnitz -
execve's error paths don't activate (and therefore pin) the mm before
calling exit_mmap to free it up, so don't try to unpin unless it is
actually pinned. This prevents a BUG_ON from triggering.Signed-off-by: Jeremy Fitzhardinge
Cc: Christian Ostheimer
Signed-off-by: Linus Torvalds -
commit 3556ddfa9284a86a59a9b78fe5894430f6ab4eef titled
[PATCH] x86-64: Disable local APIC timer use on AMD systems with C1E
solves a problem with AMD dual core laptops e.g. HP nx6325 (Turion 64
X2) with C1E enabled:When both cores go into idle at the same time, then the system switches
into C1E state, which is basically the same as C3. This stops the local
apic timer.This was debugged right after the dyntick merge on i386 and despite the
patch title it fixes only the 32 bit path.x86_64 is still missing this fix. It seems that mainline is not really
affected by this issue, as the PIT is running and keeps jiffies
incrementing, but that's just waiting for trouble.-mm suffers from this problem due to the x86_64 high resolution timer
patches.This is a quick and dirty port of the i386 code to x86_64.
I spent quite a time with Rafael to debug the -mm / hrt wreckage until
someone pointed us to this. I really had forgotten that we debugged this
half a year ago already.Sigh, is it just me or is there something yelling arch/x86 into my ear?
Signed-off-by: Thomas Gleixner
Tested-by: Rafael J. Wysocki
Signed-off-by: Linus Torvalds
26 Sep, 2007
1 commit
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The commit 8b6f50ef1d5cc86b278eb42bc91630fad455fb10 seems to have
been affected by a mismerge of a duplicate patch
(d054b36ffd302ec65aabec16a0c60ddd9e6b5a62) - both the
spufs_dir_contents and spufs_dir_nosched_contents have been given
write-only signal notification files.This change reverts the spufs_dir_contents array to use the
readable signal notification file implementation.Signed-off-by: Jeremy Kerr
Acked-by: Arnd Bergmann
Signed-off-by: Paul Mackerras
25 Sep, 2007
2 commits
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When PTRACE_O_TRACEEXEC is used, a ptrace call to fetch the registers at
the PTRACE_EVENT_EXEC stop (PTRACE_PEEKUSR) will oops in CHECK_FULL_REGS.
With recent versions, "gdb --args /bin/sh -c 'exec /bin/true'" and "run" at
the (gdb) prompt is sufficient to produce this. I also have written an
isolated test case, see https://bugzilla.redhat.com/show_bug.cgi?id=301791#c15.This change fixes the problem by clearing the low bit of pt_regs.trap in
start_thread so that FULL_REGS is true again. This is correct since all of
the GPRs that "full" refers to are cleared in start_thread.Signed-off-by: Roland McGrath
Signed-off-by: Paul Mackerras -
Issue reported and original patch by Kevin Kissel, cleaner (imho)
implementation by me.Signed-off-by: Ralf Baechle
23 Sep, 2007
1 commit
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When compiling the Blackfin kernel, checksyscalls.pl will report lots of missing syscalls warnings.
This patch will add some missing syscalls which make sense on Blackfin archAfter appling this patch, toolchain should be rebuilt. Then recompiling the kernel with the new
toolchain.Signed-off-by: Bryan Wu
22 Sep, 2007
6 commits
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* master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] 4569/1: ep93xx_gpio_irq_type(): fix spurious enumeration offset for FGPIO handling
[ARM] 4568/1: fix l2x0 cache invalidate handling of unaligned addresses -
This reverts commit 34feb2c83beb3bdf13535a36770f7e50b47ef299.
Suresh Siddha points out that this one breaks the fundamental
requirement that you cannot free page table pages before the TLB caches
are flushed. The quicklists do not give the same kinds of guarantees
that the mmu_gather structure does, at least not in NUMA configurations.Requested-by: Suresh Siddha
Acked-by: Andi Kleen
Cc: Andrew Morton
Cc: Christoph Lameter
Cc: Asit Mallick
Cc: Tony Luck
Signed-off-by: Linus Torvalds -
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
[MIPS] BCM1480: include .
[MIPS] BCM1480: Export zbbus_mhz. -
Signed-off-by: Ralf Baechle
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Symbol is required by the ZBus profiler.
Signed-off-by: Ralf Baechle
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Strictly it's only needed for eax.
It actually does a little more than strictly needed -- the other registers
are already zero extended.Also remove the now unnecessary and non functional compat task check
in ptrace.This is CVE-2007-4573
Found by Wojciech Purczynski
Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds