| Commit message (Collapse) | Author | Age |
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Correct boilerplates after files split. Also shorten them a bit - use
standart GPL wording (as per http://lkml.org/lkml/2007/5/1/220) and
drop changelog, which only entry about h3800 support and abstracted
EGPIOs is just confusing now, as both of these features are gone.
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Split common h3600.c into three separate files: h3100.c, h3600.c and
h3xxx.c (the latter contains common code for h3100/h3600)
Copyright boilerplates and #includes are copied intact and will be
cleaned up later.
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Combine both headers into one, rename to h3xxx.h and change all
users accordingly.
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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As all existing code was converted to gpiolib, drop no more
used pre-gpiolib (bit-shifted) GPIO definintions.
Supply new gpiolib-friendly definitions for GPIOs which
don't have them yet.
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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After conversion to gpiolib there's still some GPIOs left, that get
configured in *_mach_init() as outputs (using direct operations
on GPCR/GPDR registers), but otherwise unused. These GPIOs are mainly
sound related and should be configured by corresponding driver once
it is written.
Drop this initialisation and configure all GPIOs as input.
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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As all the remaining users of these definitions
(in pcmcia/sa1100_h3600 driver) were converted to gpio_to_irq(),
they can be safely removed.
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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As all users of assign_h3600_egpio now converted to gpiolib, we
can safely remove all assign_h3600_egpio handling code and
definitions.
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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gpiolib
Use of gpio_request/gpio_free in some callbacks may look ugly, but
corresponding drivers (sa1100_serial and sa1100_fb) don't provide (yet)
init/exit hooks and registering these gpios in *_mach_init is also
not possible, because htc-gpio driver starts a bit later...
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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It will be used for future conversion of assign_h3600_egpio calls to
gpiolib.
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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h3100 and h3600 have different sets of LCD-controlling gpios,
which mapped to the same "abstracted" EGPIO.
As we plan to get rid of those abstracted egpios completely, we
need to separate these helper functions.
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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sa1100_fb driver handles this
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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PM_SUSPEND, PM_RESUME and machine_is_h3xxx() are not used anywhere in
kernel (checked with git grep), so it's safe to remove them.
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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IRDA is handled by separate sa1100-ir driver and has
nothing to do with sa1100_serial
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The rtc-sa1100 driver takes care of this.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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No point calling sa1100_register_uart_fns early - these aren't
used until late in the boot sequence. Also convert to gpiolib
support.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Only register devices if we have platform data for those which require
platform data.
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-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Limit number of per cpu TSC sync messages
x86: dumpstack, 64-bit: Disable preemption when walking the IRQ/exception stacks
x86: dumpstack: Clean up the x86_stack_ids[][] initalization and other details
x86, cpu: mv display_cacheinfo -> cpu_detect_cache_sizes
x86: Suppress stack overrun message for init_task
x86: Fix cpu_devs[] initialization in early_cpu_init()
x86: Remove CPU cache size output for non-Intel too
x86: Minimise printk spew from per-vendor init code
x86: Remove the CPU cache size printk's
cpumask: Avoid cpumask_t in arch/x86/kernel/apic/nmi.c
x86: Make sure we also print a Code: line for show_regs()
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Limit the number of per cpu TSC sync messages by only printing
to the console if an error occurs, otherwise print as a DEBUG
message.
The info message "Skipping synchronization ..." is only printed
after the last cpu has booted.
Signed-off-by: Mike Travis <travis@sgi.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Roland Dreier <rdreier@cisco.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Tejun Heo <tj@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20091118002222.181053000@alcatraz.americas.sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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This warning:
[ 847.140022] rb_producer D 0000000000000000 5928 519 2 0x00000000
[ 847.203627] BUG: using smp_processor_id() in preemptible [00000000] code: khungtaskd/517
[ 847.207360] caller is show_stack_log_lvl+0x2e/0x241
[ 847.210364] Pid: 517, comm: khungtaskd Not tainted 2.6.32-rc8-tip+ #13761
[ 847.213395] Call Trace:
[ 847.215847] [<ffffffff81413bde>] debug_smp_processor_id+0x1f0/0x20a
[ 847.216809] [<ffffffff81015eae>] show_stack_log_lvl+0x2e/0x241
[ 847.220027] [<ffffffff81018512>] show_stack+0x1c/0x1e
[ 847.223365] [<ffffffff8107b7db>] sched_show_task+0xe4/0xe9
[ 847.226694] [<ffffffff8112f21f>] check_hung_task+0x140/0x199
[ 847.230261] [<ffffffff8112f4a8>] check_hung_uninterruptible_tasks+0x1b7/0x20f
[ 847.233371] [<ffffffff8112f500>] ? watchdog+0x0/0x50
[ 847.236683] [<ffffffff8112f54e>] watchdog+0x4e/0x50
[ 847.240034] [<ffffffff810cee56>] kthread+0x97/0x9f
[ 847.243372] [<ffffffff81012aea>] child_rip+0xa/0x20
[ 847.246690] [<ffffffff81e43494>] ? restore_args+0x0/0x30
[ 847.250019] [<ffffffff81e43083>] ? _spin_lock+0xe/0x10
[ 847.253351] [<ffffffff810cedbf>] ? kthread+0x0/0x9f
[ 847.256833] [<ffffffff81012ae0>] ? child_rip+0x0/0x20
Happens because on preempt-RCU, khungd calls show_stack() with
preemption enabled.
Make sure we are not preemptible while walking the IRQ and exception
stacks on 64-bit. (32-bit stack dumping is preemption safe.)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Make the initialization more readable, plus tidy up a few small
visual details as well.
No change in functionality.
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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display_cacheinfo() doesn't display anything anymore and it is used to
detect CPU cache sizes. Rename it accordingly.
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
LKML-Reference: <20091121130145.GA31357@liondog.tnic>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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init_task doesn't get its stack end location set to
STACK_END_MAGIC, and hence the message is confusing
rather than helpful in this case.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
LKML-Reference: <4B06AEFE02000078000211F4@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Yinghai Lu noticed that this commit:
0388423: x86: Minimise printk spew from per-vendor init code
mistakenly left out the initialization of cpu_devs[] in the
!PROCESSOR_SELECT case. Fix it.
Reported-by: Yinghai Lu <yinghai@kernel.org>
Cc: Dave Jones <davej@redhat.com>
LKML-Reference: <20091113203000.GA19160@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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As Dave Jones said about the output in intel_cacheinfo.c: "They
aren't useful, and pollute the dmesg output a lot (especially on
machines with many cores). Also the same information can be
trivially found out from userspace."
Give the generic display_cacheinfo() function the same treatment.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Acked-by: Dave Jones <davej@redhat.com>
Cc: Mike Travis <travis@sgi.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Tejun Heo <tj@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <adaocn6dp99.fsf_-_@roland-alpha.cisco.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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In the default case where the kernel supports all CPU vendors,
we currently print out a bunch of not useful messages on every
system.
32-bit:
KERNEL supported cpus:
Intel GenuineIntel
AMD AuthenticAMD
NSC Geode by NSC
Cyrix CyrixInstead
Centaur CentaurHauls
Transmeta GenuineTMx86
Transmeta TransmetaCPU
UMC UMC UMC UMC
64-bit:
KERNEL supported cpus:
Intel GenuineIntel
AMD AuthenticAMD
Centaur CentaurHauls
Given that "what CPUs does the kernel support" isn't useful for
the "support everything" case, we can suppress these printk's.
Signed-off-by: Dave Jones <davej@redhat.com>
LKML-Reference: <20091113203000.GA19160@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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They aren't really useful, and they pollute the dmesg output a lot
(especially on machines with many cores).
Also the same information can be trivially found out from
userspace.
Reported-by: Mike Travis <travis@sgi.com>
Signed-off-by: Dave Jones <davej@redhat.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Roland Dreier <rdreier@cisco.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Tejun Heo <tj@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20091112231542.GA7129@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ingo wants the certainty of a static cpumask (rather than a
cpumask_var_t), but cpumask_t will some day be undefined to
avoid on-stack declarations.
This is what DECLARE_BITMAP/to_cpumask() is for.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
LKML-Reference: <200911031453.52394.rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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show_regs() is called as a mini BUG() equivalent in some places,
specifically for the "scheduling while atomic" case.
Unfortunately right now it does not print a Code: line unlike
a real bug/oops.
This patch changes the x86 implementation of show_regs() so that
it calls the same function as oopses do to print the registers
as well as the Code: line.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
LKML-Reference: <20091102165915.4a980fc0@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, msr, cpumask: Use struct cpumask rather than the deprecated cpumask_t
x86, cpuid: Simplify the code in cpuid_open
x86, cpuid: Remove the bkl from cpuid_open()
x86, msr: Remove the bkl from msr_open()
x86: AMD Geode LX optimizations
x86, msr: Unify rdmsr_on_cpus/wrmsr_on_cpus
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This makes the declarations match the definitions, which already
use 'struct cpumask'.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Borislav Petkov <borislav.petkov@amd.com>
LKML-Reference: <200911052245.41803.rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Peter picked up my patch for tip/x86/cpu that removes the bkl in
cpuid_open. Ingo subsequently merged that into tip/master.
This patch folds back in tglx's 55968ede164ae523692f00717f50cd926f1382a0
to my patch that removed the bkl.
This simplifies the code, and makes it consistent with the changes to
kill the bkl in msr.c as well.
Originally-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Kacur <jkacur@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Most of the variables are local to the function. It IS possible that
for struct cpuinfo_x86 *c c could point to the same area. However,
this is used read only.
Signed-off-by: John Kacur <jkacur@redhat.com>
LKML-Reference: <alpine.LFD.2.00.0910072016190.15183@localhost.localdomain>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Remove the big kernel lock from msr_open() as it doesn't protect
anything there.
The only racy event that can happen here is a concurrent cpu shutdown.
So let's look at what could be racy during/after the above event:
- The cpu_online() check is racy, but the bkl doesn't help about
that anyway it disables preemption but we may be chcking another
cpu than the current one.
Also the cpu can still become offlined between open and read calls.
- The cpu_data(cpu) returns a safe pointer too. It won't be released on
cpu offlining. But some fields can be changed from
arch/x86/kernel/smpboot.c:remove_siblinginfo() :
- phys_proc_id
- cpu_core_id
Those are not read from msr_open(). What we are checking is the
x86_capability that is left untouched on offlining.
So this removal looks safe.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Sven-Thorsten Dietrich <sdietrich@suse.de>
LKML-Reference: <1254944602-7382-1-git-send-email-fweisbec@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Add CPU optimizations for AMD Geode LX.
Signed-off-by: Matteo Croce <technoboy85@gmail.com>
LKML-Reference: <40101cc30910010811v5d15ff4cx9dd57c9cc9b4b045@mail.gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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Since rdmsr_on_cpus and wrmsr_on_cpus are almost identical, unify them
into a common __rwmsr_on_cpus helper thus avoiding code duplication.
While at it, convert cpumask_t's to const struct cpumask *.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Fix a section mismatch in arch/x86/kernel/setup.c
x86: Fixup last users of irq_chip->typename
x86: Remove BKL from apm_32
x86: Remove BKL from microcode
x86: use kernel_stack_pointer() in kprobes.c
x86: use kernel_stack_pointer() in kgdb.c
x86: use kernel_stack_pointer() in dumpstack.c
x86: use kernel_stack_pointer() in process_32.c
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copy_edd() should be __init.
warning msg:
WARNING: vmlinux.o(.text+0x7759): Section mismatch in reference from the
function copy_edd() to the variable .init.data:boot_params
The function copy_edd() references
the variable __initdata boot_params.
This is often because copy_edd lacks a __initdata
annotation or the annotation of boot_params is wrong.
Signed-off-by: ZhenwenXu <helight.xu@gmail.com>
LKML-Reference: <4B139F8F.4000907@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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The typename member of struct irq_chip was kept for migration purposes
and is obsolete since more than 2 years. Fix up the leftovers.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The lock/unlock kernel pair in do_open() got there with the BKL push
down and protects nothing. Remove it.
Replace the lock/unlock kernel in the ioctl code with a mutex to
protect standbys_pending and suspends_pending.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <20091010153349.365236337@linutronix.de>
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cycle_lock_kernel() in microcode_open() is a worthless exercise as
there is nothing to wait for. Remove it.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <20091010153349.196074920@linutronix.de>
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The way to obtain a kernel-mode stack pointer from a struct pt_regs in
32-bit mode is "subtle": the stack doesn't actually contain the stack
pointer, but rather the location where it would have been marks the
actual previous stack frame. For clarity, use kernel_stack_pointer()
instead of coding this weirdness explicitly.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
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The way to obtain a kernel-mode stack pointer from a struct
pt_regs in 32-bit mode is "subtle": the stack doesn't actually
contain the stack pointer, but rather the location where it would
have been marks the actual previous stack frame. For clarity, use
kernel_stack_pointer() instead of coding this weirdness
explicitly.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Jason Wessel <jason.wessel@windriver.com>
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The way to obtain a kernel-mode stack pointer from a struct pt_regs in
32-bit mode is "subtle": the stack doesn't actually contain the stack
pointer, but rather the location where it would have been marks the
actual previous stack frame. For clarity, use kernel_stack_pointer()
instead of coding this weirdness explicitly.
Furthermore, user_mode() is only valid when the process is known to
not run in V86 mode. Use the safer user_mode_vm() instead.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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The way to obtain a kernel-mode stack pointer from a struct pt_regs in
32-bit mode is "subtle": the stack doesn't actually contain the stack
pointer, but rather the location where it would have been marks the
actual previous stack frame. For clarity, use kernel_stack_pointer()
instead of coding this weirdness explicitly.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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