linux-toradex.git/arch/x86/kernel/cpu/mcheck/Makefile, branch v3.4.6

ACPI, APEI, Generic Hardware Error Source memory error support

2010-05-20T02:41:16+00:00

Generic Hardware Error Source provides a way to report platform
hardware errors (such as that from chipset). It works in so called
"Firmware First" mode, that is, hardware errors are reported to
firmware firstly, then reported to Linux by firmware. This way, some
non-standard hardware error registers or non-standard hardware link
can be checked by firmware to produce more valuable hardware error
information for Linux.

Now, only SCI notification type and memory errors are supported. More
notification type and hardware error type will be added later. These
memory errors are reported to user space through /dev/mcelog via
faking a corrected Machine Check, so that the error memory page can be
offlined by /sbin/mcelog if the error count for one page is beyond the
threshold.

On some machines, Machine Check can not report physical address for
some corrected memory errors, but GHES can do that. So this simplified
GHES is implemented firstly.

Signed-off-by: Huang Ying 
Signed-off-by: Andi Kleen 
Signed-off-by: Len Brown

x86: mce: Rename CONFIG_X86_NEW_MCE to CONFIG_X86_MCE

2009-07-10T01:39:47+00:00

Drop the CONFIG_X86_NEW_MCE symbol and change all
references to it to check for CONFIG_X86_MCE directly.

No code changes

Signed-off-by: Andi Kleen 
Signed-off-by: H. Peter Anvin

x86: mce: Remove old i386 machine check code

2009-07-10T01:39:46+00:00

As announced in feature-remove-schedule.txt remove CONFIG_X86_OLD_MCE

This patch only removes code.

The ancient machine check code for very old systems that are not supported
by CONFIG_X86_NEW_MCE is still kept.

Signed-off-by: Andi Kleen 
Signed-off-by: H. Peter Anvin

x86, mce: rename _64.c files which are no longer 64-bit-specific

2009-06-16T23:56:11+00:00

Rename files that are no longer 64bit specific:
	mce_amd_64.c	=> mce_amd.c
	mce_intel_64.c	=> mce_intel.c

Signed-off-by: Hidetoshi Seto 
Signed-off-by: H. Peter Anvin

x86, mce: squash mce_intel.c into therm_throt.c

2009-06-16T23:56:08+00:00

move intel_init_thermal() into therm_throt.c

Signed-off-by: Hidetoshi Seto 
Signed-off-by: H. Peter Anvin

x86, mce: unify smp_thermal_interrupt

2009-06-16T23:56:08+00:00

Put common functions into therm_throt.c, modify Makefile.

	unexpected_thermal_interrupt
	intel_thermal_interrupt
	smp_thermal_interrupt
	intel_set_thermal_handler

Signed-off-by: Hidetoshi Seto 
Signed-off-by: H. Peter Anvin

x86, mce: add table driven machine check grading

2009-06-03T21:40:39+00:00

The machine check grading (as in deciding what should be done for a given
register value) has to be done multiple times soon and it's also getting
more complicated.
So it makes sense to consolidate it into a single function. To get smaller
and more straight forward and possibly more extensible code I opted towards
a new table driven method. The various rules are put into a table
when is then executed by a very simple interpreter.

The grading engine is in a new file mce-severity.c. I also added a private
include file mce-internal.h, because mce.h is already a bit too cluttered.

This is dead code right now, but will be used in followon patches.

Signed-off-by: Andi Kleen 
Signed-off-by: Hidetoshi Seto 
Signed-off-by: H. Peter Anvin

x86, mce: add basic error injection infrastructure

2009-05-28T16:24:14+00:00

Allow user programs to write mce records into /dev/mcelog. When they do
that a fake machine check is triggered to test the machine check code.

This uses the MCE MSR wrappers added earlier.

The implementation is straight forward. There is a struct mce record
per CPU and the MCE MSR accesses get data from there if there is valid
data injected there. This allows to test the machine check code
relatively realistically because only the lowest layer of hardware
access is intercepted.

The test suite and injector are available at
git://git.kernel.org/pub/scm/utils/cpu/mce/mce-test.git
git://git.kernel.org/pub/scm/utils/cpu/mce/mce-inject.git

Signed-off-by: Andi Kleen 
Signed-off-by: H. Peter Anvin 
Signed-off-by: Hidetoshi Seto 
Signed-off-by: H. Peter Anvin

x86, mce: use 64bit machine check code on 32bit

2009-05-28T16:24:13+00:00

The 64bit machine check code is in many ways much better than
the 32bit machine check code: it is more specification compliant,
is cleaner, only has a single code base versus one per CPU,
has better infrastructure for recovery, has a cleaner way to communicate
with user space etc. etc.

Use the 64bit code for 32bit too.

This is the second attempt to do this. There was one a couple of years
ago to unify this code for 32bit and 64bit.  Back then this ran into some
trouble with K7s and was reverted.

I believe this time the K7 problems (and some others) are addressed.
I went over the old handlers and was very careful to retain
all quirks.

But of course this needs a lot of testing on old systems. On newer
64bit capable systems I don't expect much problems because they have been
already tested with the 64bit kernel.

I made this a CONFIG for now that still allows to select the old
machine check code. This is mostly to make testing easier,
if someone runs into a problem we can ask them to try
with the CONFIG switched.

The new code is default y for more coverage.

Once there is confidence the 64bit code works well on older hardware
too the CONFIG_X86_OLD_MCE and the associated code can be easily
removed.

This causes a behaviour change for 32bit installations. They now
have to install the mcelog package to be able to log
corrected machine checks.

The 64bit machine check code only handles CPUs which support the
standard Intel machine check architecture described in the IA32 SDM.
The 32bit code has special support for some older CPUs which
have non standard machine check architectures, in particular
WinChip C3 and Intel P5.  I made those a separate CONFIG option
and kept them for now. The WinChip variant could be probably
removed without too much pain, it doesn't really do anything
interesting. P5 is also disabled by default (like it
was before) because many motherboards have it miswired, but
according to Alan Cox a few embedded setups use that one.

Forward ported/heavily changed version of old patch, original patch
included review/fixes from Thomas Gleixner, Bert Wesarg.

Signed-off-by: Andi Kleen 
Signed-off-by: H. Peter Anvin 
Signed-off-by: Hidetoshi Seto 
Signed-off-by: H. Peter Anvin

x86, mce: unify

2009-05-28T16:24:11+00:00

move mce_64.c => mce.c and glue it up in the Makefile.
Remove mce_32.c

Signed-off-by: Ingo Molnar 
Signed-off-by: Hidetoshi Seto 
Signed-off-by: H. Peter Anvin