kernel.git/arch/x86/kernel/cpu/mcheck/Makefile, branch linux-4.12.y

x86/mce: Factor out and deprecate the /dev/mcelog driver

2017-03-28T06:55:01Z

Move all code relating to /dev/mcelog to a separate source file. /dev/mcelog driver can now operate from the machine check notifier with lowest prio. Signed-off-by: Tony Luck [ Move the mce_helper and trigger functionality behind CONFIG_X86_MCELOG_LEGACY. ] Signed-off-by: Borislav Petkov Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-edac Link: http://lkml.kernel.org/r/20170327093304.10683-6-bp@alien8.de [ Renamed CONFIG_X86_MCELOG to CONFIG_X86_MCELOG_LEGACY. ] Signed-off-by: Ingo Molnar Signed-off-by: Ingo Molnar

x86/mce: Provide a lockless memory pool to save error records

2015-08-13T08:12:50Z

printk() is not safe to use in MCE context. Add a lockless memory allocator pool to save error records in MCE context. Those records will be issued later, in a printk-safe context. The idea is inspired by the APEI/GHES driver. We're very conservative and allocate only two pages for it but since we're going to use those pages throughout the system's lifetime, we allocate them statically to avoid early boot time allocation woes. Signed-off-by: Chen, Gong [ Rewrite. ] Signed-off-by: Borislav Petkov Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Tony Luck Link: http://lkml.kernel.org/r/1439396985-12812-3-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar

ACPI, APEI, Generic Hardware Error Source memory error support

2010-05-20T02:41:16Z

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

2009-07-10T01:39:47Z

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

2009-07-10T01:39:46Z

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

2009-06-16T23:56:11Z

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

2009-06-16T23:56:08Z

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

2009-06-16T23:56:08Z

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

2009-06-03T21:40:39Z

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

2009-05-28T16:24:14Z

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