mirror-linux/Documentation
Borislav Petkov (AMD) 80501dff81 Documentation/arch/x86: Hide clearcpuid=
This option was never meant to be used in production because it solely
clears the X86_FEATURE kernel-internal representation of what CPUID bits
it has detected and doesn't do any *proper* feature disablement like
clearing CR4.CET in the user shadow stack case, for example.

So remove its documentation so that it doesn't get used in production
and people get silly ideas. It is meant strictly for debugging; and if
a chicken bit for properly disabling a feature is warranted, then that
would need proper enablement.

No functional changes.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Mathias Krause <minipli@grsecurity.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://patch.msgid.link/20260520202508.160112-1-bp@kernel.org
2026-05-26 05:37:20 +02:00
..
ABI selinux: prune /sys/fs/selinux/user 2026-05-05 15:27:44 -04:00
PCI pci-v7.1-changes 2026-04-15 14:41:21 -07:00
RCU rcu-tasks: Document that RCU Tasks Trace grace periods now imply RCU grace periods 2026-03-30 15:48:14 -04:00
accel
accounting
admin-guide Documentation/arch/x86: Hide clearcpuid= 2026-05-26 05:37:20 +02:00
arch Documentation/arch/x86: Hide clearcpuid= 2026-05-26 05:37:20 +02:00
block Documentation: ublk: address review comments for SHMEM_ZC docs 2026-04-09 19:10:44 -06:00
bpf docs/bpf: add missing fsession attach type to docs 2026-04-12 12:42:38 -07:00
cdrom
core-api mm.git review status for linus..mm-stable 2026-04-15 12:59:16 -07:00
cpu-freq
crypto crypto/krb5, rxrpc: Fix lack of pre-decrypt/pre-verify length checks 2026-05-20 16:36:45 -07:00
dev-tools mm.git review status for linus..mm-stable 2026-04-15 12:59:16 -07:00
devicetree drm fixes for 7.1-rc5 2026-05-22 16:15:32 -07:00
doc-guide
driver-api We've finally gotten rid of the struct clk_ops::round_rate() code after months 2026-04-21 08:33:26 -07:00
edac
fault-injection
fb
features RISC-V updates for v7.1 2026-04-24 10:00:37 -07:00
filesystems \n 2026-04-27 16:45:39 -07:00
firmware-guide
firmware_class
fpga
gpu DRM Rust changes for v7.1-rc1 2026-04-01 07:32:05 +10:00
hid Docs: hid: intel-ish-hid: make long URL usable 2026-04-09 08:40:41 -06:00
hwmon docs: hwmon: sy7636a: fix temperature sysfs attribute name 2026-05-14 15:48:57 -07:00
i2c
iio
images
infiniband
input
kbuild Modules changes for v7.1-rc1 2026-04-14 17:16:38 -07:00
kernel-hacking
leds
litmus-tests
livepatch
locking
maintainer
mhi
misc-devices
mm mm.git review status for linus..mm-stable 2026-04-15 12:59:16 -07:00
netlabel
netlink net: shaper: reject handle IDs exceeding internal bit-width 2026-05-12 16:15:00 +02:00
networking ethernet: 3c509: Update documentation to match MAINTAINERS 2026-05-21 08:28:56 -07:00
nvdimm
nvme
pcmcia
peci
power
process docs: threat-model: don't limit root capabilities to CAP_SYS_ADMIN 2026-05-14 06:23:44 -06:00
rust docs: rust: general-information: use real example 2026-04-07 10:00:25 +02:00
scheduler sched_ext: Changes for v7.1 2026-04-15 10:54:24 -07:00
scsi
security ipe/stable-7.1 PR 20260413 2026-04-15 15:19:45 -07:00
sound ALSA: doc: cs35l56: Update path to HDA driver source 2026-05-15 08:53:34 +02:00
sphinx
sphinx-includes
sphinx-static
spi
staging net: remove ax25 and amateur radio (hamradio) subsystem 2026-04-23 10:24:02 -07:00
sunrpc/xdr Documentation: Add the RPC language description of NLM version 4 2026-03-29 21:25:09 -04:00
target
tee
timers
tools RTLA patches for v7.1: 2026-04-15 17:48:24 -07:00
trace Runtime Verification updates for 7.1: 2026-04-15 17:15:18 -07:00
translations Delete some obsolete networking code 2026-04-24 09:41:58 -07:00
usb
userspace-api rseq: Reenable performance optimizations conditionally 2026-05-06 17:40:27 +02:00
virt Documentation: kvm: update links in the references section of AMD Memory Encryption 2026-05-12 22:17:42 +02:00
w1
watchdog
wmi platform/wmi: Replace .no_notify_data with .min_event_size 2026-04-13 14:11:27 +03:00
.gitignore
.renames.txt Revert "drivers: net: 3com: 3c509: Remove this driver" 2026-05-21 08:28:56 -07:00
Changes
CodingStyle
Kconfig
Makefile
SubmittingPatches
atomic_bitops.txt
atomic_t.txt
conf.py
docutils.conf
index.rst
memory-barriers.txt
subsystem-apis.rst net: remove ISDN subsystem and Bluetooth CMTP 2026-04-23 10:24:02 -07:00