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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
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tree60a31895b2446cd7fa27514e8c2843534a0de0da /Documentation/ABI/testing/sysfs-mce
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Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ...
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+What: /sys/devices/system/machinecheck/machinecheckX/
+Contact: Andi Kleen <ak@linux.intel.com>
+Date: Feb, 2007
+Description:
+ (X = CPU number)
+
+ Machine checks report internal hardware error conditions
+ detected by the CPU. Uncorrected errors typically cause a
+ machine check (often with panic), corrected ones cause a
+ machine check log entry.
+
+ For more details about the x86 machine check architecture
+ see the Intel and AMD architecture manuals from their
+ developer websites.
+
+ For more details about the architecture
+ see http://one.firstfloor.org/~andi/mce.pdf
+
+ Each CPU has its own directory.
+
+What: /sys/devices/system/machinecheck/machinecheckX/bank<Y>
+Contact: Andi Kleen <ak@linux.intel.com>
+Date: Feb, 2007
+Description:
+ (Y bank number)
+
+ 64bit Hex bitmask enabling/disabling specific subevents for
+ bank Y.
+
+ When a bit in the bitmask is zero then the respective
+ subevent will not be reported.
+
+ By default all events are enabled.
+
+ Note that BIOS maintain another mask to disable specific events
+ per bank. This is not visible here
+
+What: /sys/devices/system/machinecheck/machinecheckX/check_interval
+Contact: Andi Kleen <ak@linux.intel.com>
+Date: Feb, 2007
+Description:
+ The entries appear for each CPU, but they are truly shared
+ between all CPUs.
+
+ How often to poll for corrected machine check errors, in
+ seconds (Note output is hexadecimal). Default 5 minutes.
+ When the poller finds MCEs it triggers an exponential speedup
+ (poll more often) on the polling interval. When the poller
+ stops finding MCEs, it triggers an exponential backoff
+ (poll less often) on the polling interval. The check_interval
+ variable is both the initial and maximum polling interval.
+ 0 means no polling for corrected machine check errors
+ (but some corrected errors might be still reported
+ in other ways)
+
+What: /sys/devices/system/machinecheck/machinecheckX/trigger
+Contact: Andi Kleen <ak@linux.intel.com>
+Date: Feb, 2007
+Description:
+ The entries appear for each CPU, but they are truly shared
+ between all CPUs.
+
+ Program to run when a machine check event is detected.
+ This is an alternative to running mcelog regularly from cron
+ and allows to detect events faster.
+
+What: /sys/devices/system/machinecheck/machinecheckX/monarch_timeout
+Contact: Andi Kleen <ak@linux.intel.com>
+Date: Feb, 2007
+Description:
+ How long to wait for the other CPUs to machine check too on a
+ exception. 0 to disable waiting for other CPUs.
+
+ Unit: us
+
+What: /sys/devices/system/machinecheck/machinecheckX/ignore_ce
+Contact: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
+Date: Jun 2009
+Description:
+ Disables polling and CMCI for corrected errors.
+ All corrected events are not cleared and kept in bank MSRs.
+
+What: /sys/devices/system/machinecheck/machinecheckX/dont_log_ce
+Contact: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
+Date: Jun 2009
+Description:
+ Disables logging for corrected errors.
+ All reported corrected errors will be cleared silently.
+
+ This option will be useful if you never care about corrected
+ errors.
+
+What: /sys/devices/system/machinecheck/machinecheckX/cmci_disabled
+Contact: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
+Date: Jun 2009
+Description:
+ Disables the CMCI feature.