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7495e0926f
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Steven Rostedt (VMware) 7495e0926f bootconfig: Only load bootconfig if "bootconfig" is on the kernel cmdline 
As the bootconfig is appended to the initrd it is not as easy to modify as
the kernel command line. If there's some issue with the kernel, and the
developer wants to boot a pristine kernel, it should not be needed to modify
the initrd to remove the bootconfig for a single boot.

As bootconfig is silently added (if the admin does not know where to look
they may not know it's being loaded). It should be explicitly added to the
kernel cmdline. The loading of the bootconfig is only done if "bootconfig"
is on the kernel command line. This will let admins know that the kernel
command line is extended.

Note, after adding printk()s for when the size is too great or the checksum
is wrong, exposed that the current method always looked for the boot config,
and if this size and checksum matched, it would parse it (as if either is
wrong a printk has been added to show this). It's better to only check this
if the boot config is asked to be looked for.

Link: https://lore.kernel.org/r/CAHk-=wjfjO+h6bQzrTf=YCZA53Y3EDyAs3Z4gEsT7icA3u_Psw@mail.gmail.com

Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-02-05 04:22:43 -05:00
..
ABI platform/mellanox: fix the mlx-bootctl sysfs 2019-12-20 19:00:50 +02:00
accounting
admin-guide bootconfig: Only load bootconfig if "bootconfig" is on the kernel cmdline 2020-02-05 04:22:43 -05:00
arm
arm64 arm64 updates for 5.5: 2019-11-25 15:39:19 -08:00
block block: add iostat counters for flush requests 2019-11-21 09:06:47 -07:00
bpf bpf: Add s390 testing documentation 2019-10-30 16:25:31 +01:00
cdrom
core-api powerpc updates for 5.5 #2 2019-12-06 13:36:31 -08:00
cpu-freq
crypto crypto: ablkcipher - remove deprecated and unused ablkcipher support 2019-11-17 09:02:49 +08:00
dev-tools kcov: fix struct layout for kcov_remote_arg 2020-01-04 13:55:09 -08:00
devicetree Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2020-01-11 15:40:43 -08:00
doc-guide kernel-doc: rename the kernel-doc directive 'functions' to 'identifiers' 2019-11-07 13:17:25 -07:00
driver-api Merge branch 'thermal/next' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux 2019-12-05 11:21:24 -08:00
EDID
fault-injection
fb
features riscv: gcov: enable gcov for RISC-V 2020-01-03 00:47:02 -08:00
filesystems overlayfs fixes for 5.5-rc2 2019-12-14 11:13:54 -08:00
firmware_class
firmware-guide
fpga
gpu drm/amdgpu: Improve RAS documentation (v2) 2019-11-06 16:27:48 -05:00
hid
hwmon Here's the main documentation changes for 5.5: 2019-12-02 11:51:02 -08:00
i2c Here's the main documentation changes for 5.5: 2019-12-02 11:51:02 -08:00
ia64
ide
iio
infiniband
input
isdn
kbuild kbuild: clarify the difference between obj-y and obj-m w.r.t. descending 2019-12-22 00:25:35 +09:00
kernel-hacking
leds
livepatch livepatch: Documentation of the new API for tracking system state changes 2019-11-01 13:08:24 +01:00
locking
m68k
maintainer docs: fix up the maintainer profile document 2019-11-25 08:42:12 -07:00
media media: Documentation: media: *_DEFAULT targets for subdevs 2019-11-10 17:49:27 +01:00
mic
mips
misc-devices
netlabel
networking doc/net: Update git https URLs in netdev-FAQ documentation 2020-01-03 12:33:54 -08:00
nios2
nvdimm libnvdimm, MAINTAINERS: Maintainer Entry Profile 2019-11-25 08:34:54 -07:00
openrisc
parisc
PCI
pcmcia
power pci-v5.5-changes 2019-12-03 13:58:22 -08:00
powerpc powerpc/fsl_booke/32: Document KASLR implementation 2019-11-13 19:27:58 +11:00
process Documentation: riscv: add patch acceptance guidelines 2020-01-04 21:49:01 -08:00
RCU Documentation: Rename rcu_node_context_switch() to rcu_note_context_switch() 2019-10-29 02:48:29 -07:00
riscv Documentation: riscv: add patch acceptance guidelines 2020-01-04 21:49:01 -08:00
s390
scheduler Documentation/scheduler: fix links in sched-stats 2019-10-29 04:35:41 -06:00
scsi scsi: smartpqi: Update attribute name to driver_version 2019-12-09 19:17:36 -05:00
security Documentation: security: core.rst: fix warnings 2019-11-22 10:01:47 -07:00
sh
sound ALSA: docs: Update about the new PCM sync_stop ops 2019-11-20 19:39:54 +01:00
sparc
sphinx docs, parallelism: Rearrange how jobserver reservations are made 2019-11-22 10:35:18 -07:00
sphinx-static
spi
target
timers
trace tracing: Documentation for in-kernel synthetic event API 2020-01-30 09:46:29 -05:00
translations treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
usb
userspace-api Here's the main documentation changes for 5.5: 2019-12-02 11:51:02 -08:00
virt KVM: Add support for secure guests under the Protected Execution 2019-11-29 19:20:08 +01:00
virtual
vm mm/hmm: remove hmm_mirror and related 2019-11-23 19:56:45 -04:00
w1
watchdog
x86 Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-11-26 08:40:20 -08:00
xtensa
.gitignore
asm-annotations.rst x86/ftrace: Get rid of function_hook 2019-10-25 10:52:22 +02:00
atomic_bitops.txt
atomic_t.txt
bus-virt-phys-mapping.txt
Changes
CodingStyle
conf.py
COPYING-logo
crc32.txt
debugging-modules.txt
debugging-via-ohci1394.txt
digsig.txt
DMA-API-HOWTO.txt
DMA-API.txt
DMA-attributes.txt dma-mapping: remove the DMA_ATTR_WRITE_BARRIER flag 2019-11-14 12:01:54 -04:00
DMA-ISA-LPC.txt
docutils.conf
dontdiff modpost: dump missing namespaces into a single modules.nsdeps file 2019-11-11 20:10:01 +09:00
futex-requeue-pi.txt
hwspinlock.txt
index.rst Here's the main documentation changes for 5.5: 2019-12-02 11:51:02 -08:00
io_ordering.txt
io-mapping.txt
IPMI.txt
IRQ-affinity.txt
IRQ-domain.txt
IRQ.txt
irqflags-tracing.txt
Kconfig
kobject.txt
kprobes.txt
kref.txt
logo.gif
lzo.txt
mailbox.txt
Makefile Kbuild updates for v5.5 2019-12-02 17:35:04 -08:00
memory-barriers.txt docs/memory-barriers.txt: Remove remaining references to mmiowb() 2019-11-22 10:00:46 -07:00
nommu-mmap.txt
padata.txt
percpu-rw-semaphore.txt
pi-futex.txt
preempt-locking.txt
rbtree.txt
remoteproc.txt
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt
speculation.txt
static-keys.txt
SubmittingPatches
tee.txt
this_cpu_ops.txt
unaligned-memory-access.txt
xz.txt