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authorLinus Torvalds <torvalds@linux-foundation.org>2026-09-25 15:55:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-09-25 15:55:03 -0700
commit75467f60a3d14f08f86f2b353298d2826382ff23 (patch)
treeacd8a7d5b5a675042449386efa5b42ec44d8bf81 /Documentation/ABI/testing/sysfs-kernel-reboot
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Merge tag 'ipe-pr-20260925' of git://git.kernel.org/pub/scm/linux/kernel/git/wufan/ipegrafted
Pull IPE fixes from Fan Wu: "Two fixes for use-after-free issues found by recent LLM-assisted code analysis. - move successful policy load auditing under the new policy directory's inode lock, preventing a concurrent policy deletion from freeing the policy while it is still being audited - protect the dm-verity root hash with RCU, preventing policy evaluation from racing with root hash replacement during preresume" * tag 'ipe-pr-20260925' of git://git.kernel.org/pub/scm/linux/kernel/git/wufan/ipe: ipe: protect the dm-verity root hash with RCU ipe: fix use-after-free when auditing a newly loaded policy
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+What: /sys/kernel/reboot
+Date: November 2020
+KernelVersion: 5.11
+Contact: Matteo Croce <teknoraver@meta.com>
+Description: Interface to set the kernel reboot behavior, similarly to
+ what can be done via the reboot= cmdline option.
+ (see Documentation/admin-guide/kernel-parameters.txt)
+
+What: /sys/kernel/reboot/mode
+Date: November 2020
+KernelVersion: 5.11
+Contact: Matteo Croce <teknoraver@meta.com>
+Description: Reboot mode. Valid values are: cold warm hard soft gpio
+
+What: /sys/kernel/reboot/type
+Date: November 2020
+KernelVersion: 5.11
+Contact: Matteo Croce <teknoraver@meta.com>
+Description: Reboot type. Valid values are: bios acpi kbd triple efi pci
+
+What: /sys/kernel/reboot/cpu
+Date: November 2020
+KernelVersion: 5.11
+Contact: Matteo Croce <teknoraver@meta.com>
+Description: CPU number to use to reboot.
+
+What: /sys/kernel/reboot/force
+Date: November 2020
+KernelVersion: 5.11
+Contact: Matteo Croce <teknoraver@meta.com>
+Description: Don't wait for any other CPUs on reboot and
+ avoid anything that could hang.
+
+What: /sys/kernel/reboot/hw_protection
+Date: April 2025
+KernelVersion: 6.15
+Contact: Ahmad Fatoum <a.fatoum@pengutronix.de>
+Description: Hardware protection action taken on critical events like
+ overtemperature or imminent voltage loss.
+ Valid values are: reboot shutdown