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because of e820
On 15 Jun 2006 03:45:10 +0200, Andi Kleen wrote:
> Anyways I would say that if the BIOS can't get MCFG right then
> it's likely not been validated on that board and shouldn't be used.
According to Petr Vandrovec:
... "What is important (and checked) is address of MMCONFIG reported by MCFG
table... Unfortunately code does not bother with printing that address :-(
"Another problem is that code has hardcoded that MMCONFIG area is 256MB large.
Unfortunately for the code PCI specification allows any power of two between 2MB
and 256MB if vendor knows that such amount of busses (from 2 to 128) will be
sufficient for system. With notebook it is quite possible that not full 8 bits
are implemented for MMCONFIG bus number."
So here is a patch. Unfortunately my system still fails the test because
it doesn't reserve any part of the MMCONFIG area, but this may fix others.
Booted on x86_64, only compiled on i386. x86_64 still remaps the max area
(256MB) even though only 2MB is checked... but 2.6.16 had no check at all
so it is still better.
PCI: reduce size of x86 MMCONFIG reserved area check
1. Print the address of the MMCONFIG area when the test for that area
being reserved fails.
2. Only check if the first 2MB is reserved, as that is the minimum.
Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This a bit late (yours patch was posted about a year ago), but
a co-worker of spotted part of the code that looks like a memory
leak. Looking at the code it seems that pci_mmcfg_config should
be free-ed if MMCONFIG is above 4GB.
From: Konrad Rzeszutek <konradr@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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When a PCI device is disabled via pci_disable_device(), it's still
left decoding its BAR resource ranges even though its driver
will have likely released those regions (and may even have
unloaded). pci_enable_device() already explicitly enables
BAR resource decode for the device being enabled. This patch
disables resource decode for the PCI device being disabled,
making it symmetric with the enable call.
I saw this while doing something else, not because of a
problem report. Still, seems to be the correct thing to do.
Signed-off-by: Rajesh Shah <rajesh.shah@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq:
[CPUFREQ] sets nforce2 minimum PLL divider to 2.
[CPUFREQ] Make powernow-k7 work on SMP kernels.
[CPUFREQ] cpufreq core {d,}printk adjustments
[CPUFREQ] dprintk adjustments to cpufreq-speedstep-centrino
[CPUFREQ] dprintk adjustments to cpufreq-nforce2
[CPUFREQ] Prepare powernow-k8 for future CPUs.
[CPUFREQ] Make acpi-cpufreq 'sticky'.
[CPUFREQ] Remove strange No-op from longrun.c
[CPUFREQ] Remove more freq_table reinitialisations.
[CPUFREQ] Fix another redundant initialisation in freq_table
[CPUFREQ] Remove duplicate assignment in freq_table
[CPUFREQ] CodingStyle nits in cpufreq_stats.c
[CPUFREQ] Remove duplicate assignment from cpufreq-nforce2
[CPUFREQ] Remove pointless reinitialisations in acpi-cpufreq
[CPUFREQ] Remove pointless reinitialisation from powernow-k8
[CPUFREQ] Remove redundant initialisation from longhaul.
[CPUFREQ] Clean up longhaul's speed pretty-printer
[CPUFREQ] Disambiguate loop indexes in powernow-k7
[CPUFREQ] Typo in powernow-k8
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From: "Andy Currid" <ACurrid@nvidia.com>
This patch fixes a kernel panic during boot that occurs on NVIDIA platforms
that have HPET enabled.
When HPET is enabled, the standard timer IRQ is routed to IOAPIC pin 2 and is
advertised as such in the ACPI APIC table - but an earlier workaround in the
kernel was ignoring this override. The fix is to honor timer IRQ overrides
from ACPI when HPET is detected on an NVIDIA platform.
Signed-off-by: Andy Currid <acurrid@nvidia.com>
Cc: "Brown, Len" <len.brown@intel.com>
Cc: "Yu, Luming" <luming.yu@intel.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Sets minimum PLL divider to 2.
No negative impact when tested with two nForce2 based boards.
Alexander Choporov reported (06/01/06) that xdiv = 1 does not work on his
Abit NF7S2. Although there shouldn't be much cases that lead to xdiv = 1.
(Updates also the (C) year)
Signed-off-by: Sebastian Witt <se.witt@gmx.net>
Signed-off-by: Dave Jones <davej@redhat.com>
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Even though powernow-k7 doesn't work in SMP environments,
it can work on an SMP configured kernel if there's only
one CPU present, however recalibrate_cpu_khz was returning
-EINVAL on such kernels, so we failed to init the cpufreq driver.
Signed-off-by: Dave Jones <davej@redhat.com>
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Remove KERN_* suffixes from some Centrino cpufreq driver's dprintk-s.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Dave Jones <davej@redhat.com>
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Remove KERN_* suffixes from some NForce2 cpufreq driver's dprintk-s.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Dave Jones <davej@redhat.com>
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Forthcoming AMD products will use a different algorithm for transitioning
pstates than the current generation Opteron products do. The attached
patch allows the powernow-k8 driver to work with those products.
Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Dave Jones <davej@redhat.com>
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This prevents annoying messages being printed when it gets
loaded on a machine that doesn't have support scaling via ACPI.
Signed-off-by: Dave Jones <davej@redhat.com>
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ORing something with zero is meaningless.
ACKed-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Dave Jones <davej@redhat.com>
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This reverts commit 5491d0f3e206beb95eeb506510d62a1dab462df1.
As per Andi:
"After some discussion with people who have the affected system it
seems best to revert for 2.6.17. It broke a common BIOS workaround
and PCI-X still doesn't work. Alternative is for people to change
the BIOS which seems to be better right now."
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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From: "Jan Beulich" <jbeulich@novell.com>
When using apic= on the kernel command line, this had no effect for machines
matched by either the ACPI MADT or the MPS OEM table scan. However, when such
option is specified, it should also take effect for this set of systems.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: Dave Jones <davej@redhat.com>
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Signed-off-by: Dave Jones <davej@redhat.com>
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This var is already set at entry to the function.
Signed-off-by: Dave Jones <davej@redhat.com>
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Signed-off-by: Dave Jones <davej@redhat.com>
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Getting ready to move to core cpufreq.
- Use snprintf
- Remove unnecessary nesting improving readability.
Signed-off-by: Dave Jones <davej@redhat.com>
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This shouldn't have actually caused any problems
(as we return if we 'corrupt' 'i', but it's still not
very pretty. For the sake of adding another local variable,
this got cleaner.
Signed-off-by: Dave Jones <davej@redhat.com>
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(Also fix some horked indentation)
Signed-off-by: Dave Jones <davej@redhat.com>
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Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Writing cr0 to cr2 register can't be right. This fixes the typo. I wonder
how it could survive so long.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Cc: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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o Kdump second kernel boot fails after a system crash if second kernel
is UP and acpi=off and if crash occurred on a non-boot cpu.
o Issue here is that MP tables report boot cpu lapic id as 0 but second
kernel is booting on a different processor and MP table data is stale
in this context. Hence apic_id_registered() check fails in setup_local_APIC()
when called from APIC_init_uniprocessor().
o Problem is not seen if ACPI is enabled as in that case
boot_cpu_physical_apicid is read from the LAPIC.
o Problem is not seen with SMP kernels as well because in this case also
boot_cpu_physical_apicid is read from LAPIC. (smp_boot_cpus()).
o The problem is fixed by reading boot_cpu_physical_apicid from LAPIC
if it is a UP kernel and CRASH_DUMP is enabled.
Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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typo in #ifdefs. Fixes http://bugme.osdl.org/show_bug.cgi?id=6538
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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i386 stack dump has a "<0>" in the middle of the line and an extra space
between columns in multicolumn mode. Remove those and also remove an extra
blank line of source code.
Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This is needed to see all devices.
The system has multiple PCI segments and we don't handle that properly
yet in PCI and ACPI. Short term before this is fixed blacklist it to
pci=noacpi.
Acked-by: len.brown@intel.com
Cc: gregkh@suse.de
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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HOTPLUG_CPU entry says "Say Y..." then "Say N.". Slightly ugly, so I fixed
it up, and added remark about suspend on SMP as a bonus.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Add support to oprofile for the Intel Core Solo and Core Duo processors.
See also the patch to add support to oprofile-0.9.1-8.1.1 at
http://www.kvack.org/~bcrl/patches/oprofile/oprofile-core-0.9.1.diff .
Signed-off-by: Benjamin LaHaise <benjamin.c.lahaise@intel.com>
Cc: Philippe Elie <phil.el@wanadoo.fr>
Cc: John Levon <levon@movementarian.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This reverts commit 10dbe196a8da6b3196881269c6639c0ec11c36cb.
The resource struct is still 32-bit, so trying to save a 64-bit memory
size there obviously won't work.
When we merge the 64-bit resource series, we can re-enable this.
Thanks to Sachin Sant and Maneesh Soni for debugging
Cc: Maneesh Soni <maneesh@in.ibm.com>
Cc: Sachin Sant <sachinp@in.ibm.com>
Cc: Russell King <rmk+lkml@arm.linux.org.uk>
Cc: Sharyathi Nagesh <sharyath@in.ibm.com>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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The patch addresses a problem with ACPI SCI interrupt entry, which gets
re-used, and the IRQ is assigned to another unrelated device. The patch
corrects the code such that SCI IRQ is skipped and duplicate entry is
avoided. Second issue came up with VIA chipset, the problem was caused by
original patch assigning IRQs starting 16 and up. The VIA chipset uses
4-bit IRQ register for internal interrupt routing, and therefore cannot
handle IRQ numbers assigned to its devices. The patch corrects this
problem by allowing PCI IRQs below 16.
Cc: len.brown@intel.com
Signed-off by: Natalie Protasevich <Natalie.Protasevich@unisys.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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We only need to check cpu_has_apic in the IO-APIC/L-APIC parsing, not for
all of ACPI.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current
* 'audit.b10' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current:
[PATCH] Audit Filter Performance
[PATCH] Rework of IPC auditing
[PATCH] More user space subject labels
[PATCH] Reworked patch for labels on user space messages
[PATCH] change lspp ipc auditing
[PATCH] audit inode patch
[PATCH] support for context based audit filtering, part 2
[PATCH] support for context based audit filtering
[PATCH] no need to wank with task_lock() and pinning task down in audit_syscall_exit()
[PATCH] drop task argument of audit_syscall_{entry,exit}
[PATCH] drop gfp_mask in audit_log_exit()
[PATCH] move call of audit_free() into do_exit()
[PATCH] sockaddr patch
[PATCH] deal with deadlocks in audit_free()
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At suspend time, the TSC CPUFREQ_SUSPENDCHANGE notifier change might
wrongly enable interrupt. cpufreq driver suspend/resume is in interrupt
disabled environment.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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The apic= option can be used to set the APIC driver too. When that is done
this code would always produce bogus warnings.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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The 32bit version of e820_all_mapped() needs to use u64 to avoid overflows on
PAE systems. Pointed out by Jan Beulich
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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The patch I submitted earlier to fix disabled LAPIC handling in ACPI was
mismerged for some reason I still don't quite understand. Parts of it was
applied to the wrong function.
This patch fixes it up.
Cc: <len.brown@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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... it's always current, and that's a good thing - allows simpler locking.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Fix resume_execution() to handle iret and absolute jump opcode correctly on
i386.
Signed-off-by: Masami Hiramatsu <hiramatu@sdl.hitachi.co.jp>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: "Keshavamurthy, Anil S" <anil.s.keshavamurthy@intel.com>
Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Yumiko Sugita <sugita@sdl.hitachi.co.jp>
Cc: Satoshi Oshima <soshima@redhat.com>
Cc: Hideo Aoki <haoki@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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When trap happens in user space, kprobe_exceptions_notify() funtion will
skip it. This patch deletes some unnecessary code for VM_MASK judgement in
eflags.
Signed-off-by: bibo, mao <bibo.mao@intel.com>
Cc: Masami Hiramatsu <hiramatu@sdl.hitachi.co.jp>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Acked-by: "Keshavamurthy, Anil S" <anil.s.keshavamurthy@intel.com>
Acked-by: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Yumiko Sugita <sugita@sdl.hitachi.co.jp>
Cc: Satoshi Oshima <soshima@redhat.com>
Cc: Hideo Aoki <haoki@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Running abnormal VM splits causes weird problems - people can set non-standard
splits by accident, then lots of time gets wasted diagnosing it - see the long
"[stable] 2.6.16.6 breaks java... sort of" email thread.
So we need to make this option harder to set. Use CONFIG_EMBEDDED for this.
CONFIG_EMBEDDED isn't really the right thing to use, but there's nothing else
obvious and avoiding these problems is more important than Kconfig purity.
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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CPU_HOTPLUG has race conditions when we use broadcast mode IPI.
- First we introduced no_broadcast option
(see include/asm-i386/mach-default/mach_ipi.h)
- x86_64 solved it by using physical flat mode (same as bigsmp on i386)
since this will not use broadcast shortcuts for IPI.
- We switched to use bigsmp on i386 so that we can have same handling as
x86_64, but apparently this caused an error message, if kernel was
compiled without X86_GENERICARCH, X86_BIGSMP. The message "You have >8
CPUS..." which was bogus and misleading, and only indicated one of the
above ARCH wasnt selected.
So we do not switch to automatic bigsmp for HOTPLUG_CPU support in i386
until the other related config dependencies for SMP_SUSPEND etc can be done
right.
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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These messages are kinda silly..
CPU#0 had 0 usecs TSC skew, fixed it up.
CPU#1 had 0 usecs TSC skew, fixed it up.
inspired from: http://bugzilla.kernel.org/attachment.cgi?id=7713&action=view
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This device id improperly got added to the VIA chipset list with a
previous patch. Remove it as it is not correct.
Cc: Grzegorz Janoszka <Grzegorz@Janoszka.pl>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Few of the notifier_chain_register() callers use __init in the definition
of notifier_call. It is incorrect as the function definition should be
available after the initializations (they do not unregister them during
initializations).
This patch fixes all such usages to _not_ have the notifier_call __init
section.
Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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AMD K7/K8 CPUs only save/restore the FOP/FIP/FDP x87 registers in FXSAVE
when an exception is pending. This means the value leak through
context switches and allow processes to observe some x87 instruction
state of other processes.
This was actually documented by AMD, but nobody recognized it as
being different from Intel before.
The fix first adds an optimization: instead of unconditionally
calling FNCLEX after each FXSAVE test if ES is pending and skip
it when not needed. Then do a x87 load from a kernel variable to
clear FOP/FIP/FDP.
This means other processes always will only see a constant value
defined by the kernel in their FP state.
I took some pain to make sure to chose a variable that's already
in L1 during context switch to make the overhead of this low.
Also alternative() is used to patch away the new code on CPUs
who don't need it.
Patch for both i386/x86-64.
The problem was discovered originally by Jan Beulich. Richard
Brunner provided the basic code for the workarounds, with contribution
from Jan.
This is CVE-2006-1056
Cc: richard.brunner@amd.com
Cc: jbeulich@novell.com
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Andrew Morton pointed out that compiler might not inline the functions
marked for inline in kprobes. There-by allowing the insertion of probes
on these kprobes routines, which might cause recursion.
This patch removes all such inline and adds them to kprobes section
there by disallowing probes on all such routines. Some of the routines
can even still be inlined, since these routines gets executed after the
kprobes had done necessay setup for reentrancy.
Signed-off-by: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Fix the "apm: set display: Interface not engaged" error on Armada laptops
again.
Jordan said:
I think this is fine. It seems to me that this may be the fault of one or
both of the APM solutions handling this situation in a non-standard way, but
since APM is used very little on the Geode, and I have direct access to our
BIOS folks, if this problem comes up with a customer again, we'll solve it
from the firmware.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Cc: "Jordan Crouse" <jordan.crouse@amd.com>
Cc: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Fix section mismatch warnings in x86 cpuid and msr notifier callback
functions. We can't have these as init (discarded) code.
WARNING: arch/x86_64/kernel/cpuid.o - Section mismatch: reference to .init.text: from .data between 'cpuid_class_cpu_notifier' (at offset 0x0) and 'cpuid_fops'
WARNING: arch/x86_64/kernel/msr.o - Section mismatch: reference to .init.text: from .data between 'msr_class_cpu_notifier' (at offset 0x0) and 'msr_fops'
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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