This also implies that corresponding log messages, e.g.

  platform microcode: firmware: requesting amd-ucode/microcode_amd.bin

show up only once on module load and not when ucode is updated
for each CPU.
Signed-off-by: NAndreas Herrmann <andreas.herrmann3@amd.com>
Cc: dimm <dmitry.adamushko@gmail.com>
LKML-Reference: <20091110110723.GH30802@alberich.amd.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Signed-off-by: NAndreas Herrmann <andreas.herrmann3@amd.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
LKML-Reference: <20091029134742.GD30802@alberich.amd.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Signed-off-by: NBorislav Petkov <borislav.petkov@amd.com>
Signed-off-by: NAndreas Herrmann <andreas.herrmann3@amd.com>
LKML-Reference: <20091029134552.GC30802@alberich.amd.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

kernel missed to free memtype if get_vm_area_caller failed in
__ioremap_caller.

This patch introduces error path to fix this and cleans up the
repetitive error return sequences that contributed to the
creation of the bug.
Signed-off-by: NXiaotian Feng <dfeng@redhat.com>
Acked-by: NSuresh Siddha <suresh.b.siddha@intel.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
LKML-Reference: <1257389031-20429-1-git-send-email-dfeng@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

We have a board with a Phoenix/MSC BIOS which also corrupts the low
64KB of RAM, so add an entry to the table.
Signed-off-by: NSimon Kagstrom <simon.kagstrom@netinsight.net>
LKML-Reference: <20091106154404.002648d9@marrow.netinsight.se>
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>

This patch fixes two issues in the procfs stack information on
x86-64 linux.

The 32 bit loader compat_do_execve did not store stack
start. (this was figured out by Alexey Dobriyan).

The stack information on a x64_64 kernel always shows 0 kbyte
stack usage, because of a missing implementation of the KSTK_ESP
macro which always returned -1.

The new implementation now returns the right value.
Signed-off-by: NStefani Seibold <stefani@seibold.net>
Cc: Americo Wang <xiyou.wangcong@gmail.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <1257240160.4889.24.camel@wall-e>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Reboot does not work out of the box on my "Early 2009" Mac mini
(3,1). Detect this machine via DMI as we do for recent MacBooks.
Signed-off-by: NGottfried Haider <gottfried.haider@gmail.com>
Cc: Ozan Çağlayan <ozan@pardus.org.tr>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Trivial typo.
Signed-off-by: NDave Jones <davej@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

The function iommu_feature_disable is required on system
shutdown to disable the IOMMU but it is marked as __init.
This may result in a panic if the memory is reused. This
patch fixes this bug.
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>

The EFI RTC functions are only available on 32 bit. commit 7bd867df
(x86: Move get/set_wallclock to x86_platform_ops) removed the 32bit
dependency which leads to boot crashes on 64bit EFI systems.

Add the dependency back. 
Solves: http://bugzilla.kernel.org/show_bug.cgi?id=14466Tested-by: NMatthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: NFeng Tang <feng.tang@intel.com>
LKML-Reference: <20091020125402.028d66d5@feng-desktop>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Restoring %ebp after the call to audit_syscall_exit() is not
only unnecessary (because the register didn't get clobbered),
but in the sysenter case wasn't even doing the right thing: It
loaded %ebp from a location below the top of stack (RBP <
ARGOFFSET), i.e. arbitrary kernel data got passed back to user
mode in the register.
Signed-off-by: NJan Beulich <jbeulich@novell.com>
Acked-by: NRoland McGrath <roland@redhat.com>
Cc: <stable@kernel.org>
LKML-Reference: <4AE5CC4D020000780001BD13@vpn.id2.novell.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Non-PAE 32-bit dump kernels may wrap an address around 4G and
poke unwanted space. ptes there are 32-bit long, and since
pfn << PAGE_SIZE may exceed this limit, high pfn bits are
cropped and wrong address mapped by kmap_atomic_pfn in
copy_oldmem_page.

Don't allow this behavior in non-PAE kdump kernels by checking
pfns passed into copy_oldmem_page. In the case of failure,
userspace process gets EFAULT.

[v2]
- fix comments
- move ifdefs inside the function
Signed-off-by: NJiri Slaby <jirislaby@gmail.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Simon Horman <horms@verge.net.au>
Cc: Paul Mundt <lethal@linux-sh.org>
LKML-Reference: <1256551903-30567-1-git-send-email-jirislaby@gmail.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Commit 79e1dd05 "x86: Provide an alternative() based
cmpxchg64()" broke lguest, even on systems which have cmpxchg8b
support.  The emulation code gets used until alternatives get
run, but it contains native instructions, not their paravirt
alternatives.

The simplest fix is to turn this code off except for 386 and 486
builds.
Reported-by: NJohannes Stezenbach <js@sig21.net>
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
Acked-by: NH. Peter Anvin <hpa@zytor.com>
Cc: lguest@ozlabs.org
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <200910261426.05769.rusty@rustcorp.com.au>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

STACKPROTECTOR_ALL has a really high overhead (runtime and stack
footprint) and is not really worth it protection wise (the
normal STACKPROTECTOR is in effect for all functions with
buffers already), so lets just remove the option entirely.
Reported-by: NDave Jones <davej@redhat.com>
Reported-by: NChuck Ebbert <cebbert@redhat.com>
Signed-off-by: NArjan van de Ven <arjan@linux.intel.com>
Cc: Eric Sandeen <sandeen@redhat.com>
LKML-Reference: <20091023073101.3dce4ebb@infradead.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

When sending a NMI_VECTOR IPI using the UV_HUB_IPI_INT register,
we need to ensure the delivery mode field of that register has
NMI delivery selected.

This makes those IPIs true NMIs, instead of flat IPIs. It
matters to reboot sequences and KGDB, both of which use NMI
IPIs.
Signed-off-by: NRobin Holt <holt@sgi.com>
Acked-by: NJack Steiner <steiner@sgi.com>
Cc: Martin Hicks <mort@sgi.com>
Cc: <stable@kernel.org>
LKML-Reference: <20091020193620.877322000@alcatraz.americas.sgi.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Create an inline function to extract the pnode from a global
physical address and then convert the broadcast assist unit to
use the newly created uv_gpa_to_pnode function.

The open-coded code was wrong as well - it might explain a
few of our unexplained bau hangs.
Signed-off-by: NRobin Holt <holt@sgi.com>
Acked-by: NCliff Whickman <cpw@sgi.com>
Cc: linux-mm@kvack.org
Cc: Jack Steiner <steiner@sgi.com>
LKML-Reference: <20091016112920.GZ8903@sgi.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

The MCE initialization code explicitly says it doesn't handle
asymmetric configurations where different CPUs support different
numbers of MCE banks, and it prints a big warning in that case.

Therefore, printing the "mce: CPU supports <x> MCE banks"
message into the kernel log for every CPU is pure redundancy
that clutters the log significantly for systems with lots of
CPUs.
Signed-off-by: NRoland Dreier <rolandd@cisco.com>
LKML-Reference: <adaeip473qt.fsf@cisco.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

A few parts of the uv_hub_info structure are initialized
incorrectly.

 - n_val is being loaded with m_val.
 - gpa_mask is initialized with a bytes instead of an unsigned long.
 - Handle the case where none of the alias registers are used.

Lastly I converted the bau over to using the uv_hub_info->m_val
which is the correct value.

Without this patch, booting a large configuration hits a
problem where the upper bits of the gnode affect the pnode
and the bau will not operate.
Signed-off-by: NRobin Holt <holt@sgi.com>
Acked-by: NJack Steiner <steiner@sgi.com>
Cc: Cliff Whickman <cpw@sgi.com>
Cc: stable@kernel.org
LKML-Reference: <20091015224946.396355000@alcatraz.americas.sgi.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Older binutils breaks if ASSERT() is used without a sink
for the output.

For example 2.14.90.0.6 is known to be broken, the link
fails with:

  LD      .tmp_vmlinux1
  ld:arch/x86/kernel/vmlinux.lds:678: parse error

Document this quirk in all three files that use it.

  See:    http://marc.info/?l=linux-kbuild&m=124930110427870&w=2
  See[2]: d2ba8b21 ("x86: Fix assert syntax in vmlinux.lds.S")

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Roland McGrath <roland@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
LKML-Reference: <4AD6523D.5030909@zytor.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

This reverts commit e9a63a4e.

This breaks older binutils, where sink-less asserts are broken.

See this commit for further details:

  d2ba8b21: x86: Fix assert syntax in vmlinux.lds.S
Acked-by: N"H. Peter Anvin" <hpa@zytor.com>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <4AD6523D.5030909@zytor.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

clock24xx.c is missing a omap2_init_clk_clkdm() in its
omap2_clk_init() function.  Among other bad effects, this causes the
OMAP hwmod layer to oops on boot.

Thanks to Carlos Aguiar <carlos.aguiar@indt.org.br> and Stefano
Panella <Stefano.Panella@csr.com> for reporting this bug.  Thanks to Tony
Lindgren <tony@atomide.com> for N800 booting advice.
Signed-off-by: NPaul Walmsley <paul@pwsan.com>
Cc: Carlos Aguiar <carlos.aguiar@indt.org.br>
Cc: Stefano Panella <Stefano.Panella@csr.com>
Cc: Tony Lindgren <tony@atomide.com>

There is a possible race condition in clockdomain
code handling hw supported idle transitions.

When multiple autodeps dependencies are being added
or removed, a transition of still remaining dependent
powerdomain can result in false readings of the
state counter. This is especially fatal for off mode
state counter, as it could result in a driver not
noticing a context loss.

Fixed by disabling hw supported state transitions
when autodeps are being changed.
Signed-off-by: NKalle Jokiniemi <kalle.jokiniemi@digia.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

The linker scripts grew some use of weirdly wrong linker script syntax.
It happens to work, but it's not what the syntax is documented to be.
Clean it up to use the official syntax.
Signed-off-by: NRoland McGrath <roland@redhat.com>
CC: Ian Lance Taylor <iant@google.com>

This small typo written by author causes that McBSP receiver is disabled on
OMAP2430 and OMAP3430 even if only transmitter is stopped. This was noted
with ALSA SoC where simultaneous recording halted if playback was stopped
first.
Signed-off-by: NJarkko Nikula <jhnikula@gmail.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

This patch initializes the correct SDRC settings required
for DVFS on Zoom2.
Signed-off-by: NTeerth Reddy <teerth@ti.com>
Signed-off-by: NKevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

The I2C-1 bus frequency on RX-51 should be 2.2 MHz. The speed is limited
by TWL5030/GAIA; a higher speed could lead to errors on the interface. The
maximum speed depends on the system clock for GAIA: 2.2 MHz (if 19.2 MHz),
2.4 MHz (26 MHz) or 2.9 MHz (38.4 MHz).
Signed-off-by: NAaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Argument tparams was not being used to program
global register GCR.HI_THREAD_RESERVED. This patch fixes the same.
Signed-off-by: NAnuj Aggarwal <anuj.aggarwal@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

The symbol CONFIG_ISP1301_OMAP was defined twice in the
defconfig. This was causing the warning:
arch/arm/configs/omap3_beagle_defconfig:972:warning:
 override: reassigning to symbol ISP1301_OMAP
Signed-off-by: NSanjeev Premi <premi@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

In 'cdd6c482', we renamed
Performance Counters -> Performance Events.

The name showed up in /proc/interrupts also needs a change. I use
PMI (Performance monitoring interrupt) here, since it is the
official name used in Intel's documents.
Signed-off-by: NLi Hong <lihong.hi@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <20091014105039.GA22670@uhli>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

This patch makes the hwcap bit for the high gprs feature to be visible
in /proc/cpuinfo.
Signed-off-by: NAndreas Krebbel <Andreas.Krebbel@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

Hypfs never worked on systems that only provide D204 subcode 6.
In these cases we nevertheless used subcode 7. With this fix, we
use subcode 6, if it is available and the system does not provide
subcode 7.
Signed-off-by: NMichael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

The resume_userspace path had TRACE_IRQS_OFF written incorrectly and so
never handled the transition properly. This was fixed once before but
seems to have made it back in the tree. Fix it for good.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This only needs to flush the return code via the legacy path, and just
invalidates uselessly otherwise. This makes the behaviour consistent for
all of the trampoline setup paths.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

The secondary CPU info was seeing corrupted results due to not entering
all of the setup paths taken by the boot CPU. So we just memcpy() the
boot cpu data over directly, and then fix up the per-CPU bits.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

Trivial change for cleaning up the cpuinfo pretty printing on SMP, adds a
newline between CPUs.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

We do not want to use smp_processor_id() from these paths, as they trip
preempt BUGs. Switch the test over to the boot cpu directly.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

making a powerpc target with PCI support, shows the
following warning:

  MODPOST vmlinux.o
WARNING: vmlinux.o(.text+0x10430): Section mismatch in reference from the
function pcibios_allocate_bus_resources() to the function .init.text:reparent_resources()

The function pcibios_allocate_bus_resources() references
the function __init reparent_resources().

This is often because pcibios_allocate_bus_resources lacks a __init
annotation or the annotation of reparent_resources is wrong.

This patch fix this warning by removing the __init
annotation before reparent_resources.
Signed-off-by: NHeiko Schocher <hs@denx.de>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

Here's a patch that adds the ppc750 CL cpu as supported by oprofile.
Signed-off-by: NDragos Tatulea <dtatulea@ixiacom.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

We need to align before the output section. Having the align inside
the output section causes the linker to put some filler in there,
which makes it a non-empty section, but this section isn't assigned to
a segment so you get a warning from the linker.
Signed-off-by: NSean MacLennan <smaclennan@pikatech.com>
Acked-by: NSegher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

'acc' isn't used anywhere and thus triggers gcc warning, which causes
build error with CONFIG_PPC_DISABLE_WERROR=n (default):

  cc1: warnings being treated as errors
  arch/powerpc/kernel/kgdb.c: In function 'gdb_regs_to_pt_regs':
  arch/powerpc/kernel/kgdb.c:289: warning: unused variable 'acc'
  make[1]: *** [arch/powerpc/kernel/kgdb.o] Error 1
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>