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Matteo Croce 1a9d079f43 reboot: allow to override reboot type if quirks are found
Patch series "reboot: sysfs improvements".

Some improvements to the sysfs reboot interface: hide not working settings
and support machines with known reboot quirks.

This patch (of 2):

On some machines a quirk can force a specific reboot type.  Quirks are
found during a DMI scan, the list of machines which need special reboot
handling is defined in reboot_dmi_table.

The kernel command line reboot= option overrides this via a global
variable `reboot_default`, so that the reboot type requested in the
command line is really performed.

This was not true when setting the reboot type via the new sysfs
interface.  Fix this by setting reboot_default upon the first change, like
reboot_setup() does for the command line.

Link: https://lkml.kernel.org/r/20201130173717.198952-1-mcroce@linux.microsoft.com
Link: https://lkml.kernel.org/r/20201130173717.198952-2-mcroce@linux.microsoft.com
Signed-off-by: Matteo Croce <mcroce@microsoft.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
History 2020-12-15 22:46:19 -08:00
arch ubsan: enable for all*config builds 2020-12-15 22:46:18 -08:00
block Scheduler updates: 2020-12-14 18:29:11 -08:00
certs .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
crypto crypto: aegis128 - avoid spurious references crypto_aegis128_update_simd 2020-12-04 18:16:53 +11:00
Documentation reboot: allow to specify reboot mode via sysfs 2020-12-15 22:46:19 -08:00
drivers ath9k: make relay callbacks const 2020-12-15 22:46:18 -08:00
fs bfs: don't use WARNING: string when it's just info. 2020-12-15 22:46:18 -08:00
include relay: allow the use of const callback structs 2020-12-15 22:46:18 -08:00
init Merge branch 'akpm' (patches from Andrew) 2020-12-15 12:53:37 -08:00
ipc Merge branch 'akpm' (patches from Andrew) 2020-12-15 12:53:37 -08:00
kernel reboot: allow to override reboot type if quirks are found 2020-12-15 22:46:19 -08:00
lib lib/ubsan.c: mark type_check_kinds with static keyword 2020-12-15 22:46:19 -08:00
LICENSES LICENSES: Add the CC-BY-4.0 license 2020-12-08 10:33:27 -07:00
mm mm/memory_hotplug: quieting offline operation 2020-12-15 22:46:15 -08:00
net Networking updates for 5.11 2020-12-15 13:22:29 -08:00
samples samples/bpf: Fix possible hang in xdpsock with multiple threads 2020-12-10 23:13:43 +01:00
scripts ubsan: move cc-option tests into Kconfig 2020-12-15 22:46:18 -08:00
security Networking updates for 5.11 2020-12-15 13:22:29 -08:00
sound ACPI updates for 5.11-rc1 2020-12-15 16:39:06 -08:00
tools drivers/misc/lkdtm: add new file in LKDTM to test fortified strscpy 2020-12-15 22:46:16 -08:00
usr Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-08-07 13:29:39 -07:00
virt kvm: x86/mmu: Support dirty logging for the TDP MMU 2020-10-23 03:42:13 -04:00
.clang-format RDMA 5.10 pull request 2020-10-17 11:18:18 -07:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: docs: ignore sphinx_*/ directories 2020-09-10 10:44:31 -06:00
.mailmap mailmap: add two more addresses of Uwe Kleine-König 2020-12-06 10:19:07 -08:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-12-11 22:29:38 -08:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS pci-v5.11-changes 2020-12-15 16:49:59 -08:00
Makefile Linux 5.10 2020-12-13 14:41:30 -08:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.