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Jan H. Schönherr ef61f8a340 x86/boot/e820: Implement a range manipulation operator 
Add a more versatile memmap= operator, which -- in addition to all the
things that were possible before -- allows you to:

- redeclare existing ranges -- before, you were limited to adding ranges;
- drop any range -- like a mem= for any location;
- use any e820 memory type -- not just some predefined ones.

The syntax is:

  memmap=<size>%<offset>-<oldtype>+<newtype>

Size and offset work as usual. The "-<oldtype>" and "+<newtype>" are
optional and their existence determine the behavior: The command
works on the specified range of memory limited to type <oldtype>
(if specified). This memory is then configured to show up as <newtype>.
If <newtype> is not specified, the memory is removed from the e820 map.

Signed-off-by: Jan H. Schönherr <jschoenh@amazon.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20180202231020.15608-1-jschoenh@amazon.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-02-26 08:44:52 +01:00
..
ABI
Merge tag 'acpi-4.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2018-02-15 14:50:32 -08:00
accelerators
ocxl: Documentation
2018-01-27 20:02:24 +11:00
accounting
…
acpi
ACPI / LPIT: Add Low Power Idle Table (LPIT) support
2017-10-11 15:38:10 +02:00
admin-guide
x86/boot/e820: Implement a range manipulation operator
2018-02-26 08:44:52 +01:00
aoe
…
arm
ARM: sunxi: add support for R40 SoC
2017-09-22 21:57:09 +02:00
arm64
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
2018-01-30 13:57:43 -08:00
auxdisplay
…
backlight
…
blackfin
…
block
block, bfq: move debug blkio stats behind CONFIG_DEBUG_BLK_CGROUP
2017-11-14 20:13:33 -07:00
blockdev
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
2017-09-07 21:11:05 -07:00
bpf
bpf: add documentation to compare clang "-target bpf" and default target
2018-02-02 11:14:19 +01:00
bus-devices
…
cdrom
documentation: Update ide-cd documentation to reflect CONFIG_BLK_DEV_HD_IDE removal
2017-10-12 11:25:31 -06:00
cgroup-v1
Documentation: Fix 'file_mapped' -> 'mapped_file'
2018-01-30 09:52:11 -08:00
cma
…
connector
…
console
…
core-api
idr: Add documentation
2018-02-06 16:41:29 -05:00
cpu-freq
cpufreq: Add and use cpufreq_for_each_{valid_,}entry_idx()
2018-02-08 10:21:39 +01:00
cpuidle
…
cris
…
crypto
crypto: doc - adapt api sample to use async. op wait
2017-11-03 22:11:23 +08:00
dev-tools
Merge tag 'kbuild-misc-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2017-11-17 17:51:33 -08:00
device-mapper
dm cache: Documentation: update default migration_throttling value
2018-01-30 16:55:47 -05:00
devicetree
Merge tag 'mips_4.16_2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips
2018-02-13 09:35:17 -08:00
doc-guide
scripts: kernel-doc: parse next structs/unions
2017-12-21 13:41:46 -07:00
driver-api
s390/docs: reword airq section
2018-02-02 10:47:15 +01:00
driver-model
serdev: Introduce devm_serdev_device_open()
2018-01-08 10:08:34 +00:00
early-userspace
…
EDID
…
extcon
…
fault-injection
Merge tag 'docs-4.16' of git://git.lwn.net/linux
2018-01-31 19:25:25 -08:00
fb
documentation: fb: update list of available compiled-in fonts
2017-11-08 03:39:52 -07:00
features
membarrier-sync-core: Document architecture support
2018-02-10 12:45:10 +01:00
filesystems
afs: Support the AFS dynamic root
2018-02-06 14:43:37 +00:00
firmware_class
…
fmc
…
fpga
fpga: mgr: separate getting/locking FPGA manager
2017-11-28 16:30:37 +01:00
frv
…
gpio
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2018-02-01 10:49:58 -08:00
gpu
Merge tag 'drm-misc-fixes-2018-02-21' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
2018-02-22 08:39:26 +10:00
hid
Documentation: fix input related doc refs
2017-10-12 11:14:06 -06:00
hwmon
hwmon: (pmbus/max31785) Add dual tachometer support
2018-01-02 15:05:34 -08:00
i2c
i2c: i801: Add missing documentation entries for Braswell and Kaby Lake
2018-02-21 09:17:20 +01:00
ia64
kbuild: /bin/pwd -> pwd
2017-11-18 11:32:27 +09:00
ide
…
iio
iio: adc: New driver for Cirrus Logic EP93xx ADC
2017-07-25 19:56:23 +01:00
infiniband
IB: Update references to libibverbs
2018-02-04 11:56:49 -05:00
input
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2018-02-01 10:49:58 -08:00
ioctl
ocxl: Documentation
2018-01-27 20:02:24 +11:00
isdn
…
kbuild
Merge tag 'docs-4.16' of git://git.lwn.net/linux
2018-01-31 19:25:25 -08:00
kdump
kexec/kdump: minor Documentation updates for arm64 and Image
2017-07-12 16:26:00 -07:00
kernel-hacking
Documentation: Fix misconversion of #if
2018-01-17 16:45:01 -07:00
laptops
Documentation: fix admin-guide doc refs
2017-10-12 11:13:28 -06:00
leds
Documentation: leds: Update 00-INDEX file
2017-10-23 20:17:03 +02:00
lightnvm
…
livepatch
livepatch: Remove immediate feature
2018-01-11 10:58:03 +01:00
locking
Documentation/locking/mutex-design: Update to reflect latest changes
2018-02-11 12:28:58 +01:00
m68k
…
maintainer
docs: Add an intro note to the maintainers handbook
2017-12-11 14:46:10 -07:00
md
raid5-ppl: PPL support for disks with write-back cache enabled
2018-01-15 14:29:42 -08:00
media
media: lirc: lirc mode ioctls deal with current mode
2018-01-23 07:25:26 -05:00
memory-devices
…
metag
…
mic
…
mips
Documentation: mips: Update AU1xxx_IDE Kconfig dependencies
2018-02-01 12:45:35 -07:00
misc-devices
Documentation: misc-devices: Add Documentation for pci-endpoint-test driver
2017-04-28 10:23:19 -05:00
mmc
Merge tag 'mmc-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
2017-05-02 17:34:32 -07:00
mn10300
…
mtd
mtd: spi-nor: add an API to restore the status of SPI flash chip
2017-12-13 00:36:00 +01:00
namespaces
…
netlabel
…
networking
docs: segmentation-offloads.txt: add SCTP info
2018-02-14 14:52:39 -05:00
nfc
…
nios2
…
nvdimm
…
nvmem
NVMEM documentation fix: A minor typo
2017-08-24 13:31:58 -06:00
openrisc
Documentation: openrisc: Updates to README
2017-10-30 21:37:53 +09:00
parisc
…
PCI
docs: update old references for DocBook from the documentation
2017-05-16 08:44:19 -03:00
pcmcia
…
perf
perf: ARM DynamIQ Shared Unit PMU support
2018-01-02 16:43:12 +00:00
phy
…
platform
…
power
Merge tag 'regulator-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
2018-01-29 11:32:44 -08:00
powerpc
Merge tag 'powerpc-4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2017-07-07 13:55:45 -07:00
pps
drivers/pps: aesthetic tweaks to PPS-related content
2017-09-08 18:26:51 -07:00
process
Merge tag 'docs-4.16-2' of git://git.lwn.net/linux
2018-02-07 09:42:59 -08:00
pti
…
ptp
…
rapidio
…
RCU
Merge branches 'cond_resched.2017.12.04a', 'dyntick.2017.11.28a', 'fixes.2017.12.11a', 'srbd.2017.12.05a' and 'torture.2017.12.11a' into HEAD
2017-12-11 09:21:58 -08:00
s390
…
scheduler
sched/deadline: Fix the description of runtime accounting in the documentation
2017-11-16 09:00:35 +01:00
scsi
scsi: documentation: Fix case of 'scsi_device' struct mention(s)
2017-12-02 08:43:43 -07:00
security
Documentation: security/credentials.rst: explain need to sort group_list
2018-01-08 14:20:31 -07:00
serial
tty: n_gsm: do not send/receive in ldisc close path
2017-06-03 18:48:52 +09:00
sh
docs-rst: convert sh book to ReST
2017-05-16 08:44:18 -03:00
sound
Merge tag 'sound-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
2017-11-14 18:01:46 -08:00
sparc
sparc64: Oracle DAX driver
2018-01-22 08:17:16 -08:00
sphinx
linux-next: docs-rst: Fix typos in kfigure.py
2018-01-17 16:49:05 -07:00
sphinx-static
docs RTD theme: code-block with line nos - lines and line numbers don't line up.
2017-07-17 13:48:45 -06:00
spi
spi: Document SPI slave controller support
2017-05-26 13:11:00 +01:00
sysctl
Documentation/sysctl/user.txt: fix typo
2018-02-06 18:32:48 -08:00
target
Documentation/target: add an example script to configure an iSCSI target
2017-05-01 22:21:35 -07:00
thermal
cpu_cooling: Remove static-power related documentation
2018-01-03 13:11:48 +01:00
timers
docs: highres: fix broken urls
2017-09-26 14:58:23 -06:00
trace
docs: ftrace-uses.rst fix varios code-block directives
2017-12-21 13:39:31 -07:00
translations
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk
2018-02-01 13:36:15 -08:00
usb
Merge tag 'docs-4.16' of git://git.lwn.net/linux
2018-01-31 19:25:25 -08:00
userspace-api
seccomp: Implement SECCOMP_RET_KILL_PROCESS action
2017-08-14 13:46:50 -07:00
virtual
Merge tag 'kvm-ppc-next-4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
2018-02-01 16:13:07 +01:00
vm
Merge tag 'docs-4.16' of git://git.lwn.net/linux
2018-01-31 19:25:25 -08:00
w1
Merge tag 'docs-4.16' of git://git.lwn.net/linux
2018-01-31 19:25:25 -08:00
watchdog
documentation: watchdog: remove documentation of w83697hf_wdt/w83697ug_wdt
2018-02-03 11:09:54 +01:00
wimax
…
x86
Merge tag 'v4.16-rc3' into x86/mm, to pick up fixes
2018-02-26 08:41:15 +01:00
xtensa
xtensa: add support for KASAN
2017-12-16 22:37:12 -08:00
.gitignore
…
00-INDEX
docs: get rid of kernel-doc-nano-HOWTO.txt
2017-12-21 13:41:46 -07:00
atomic_bitops.txt
locking/atomic/bitops: Document and clarify ordering semantics for failed test_and_{}_bit()
2018-02-13 14:55:53 +01:00
atomic_t.txt
Documentation/locking/atomic: Finish the document...
2017-08-25 11:06:33 +02:00
bcache.txt
bcache.txt: standardize document format
2017-07-14 13:51:27 -06:00
bt8xxgpio.txt
bt8xxgpio.txt: standardize document format
2017-07-14 13:51:27 -06:00
btmrvl.txt
btmrvl.txt: standardize document format
2017-07-14 13:51:27 -06:00
bus-virt-phys-mapping.txt
bus-virt-phys-mapping.txt: standardize document format
2017-07-14 13:51:28 -06:00
cachetlb.txt
cachetlb.txt: standardize document format
2017-07-14 13:51:28 -06:00
cgroup-v2.txt
cgroup, docs: document the root cgroup behavior of cpu and io controllers
2018-01-16 08:07:09 -08:00
Changes
…
circular-buffers.txt
doc: De-emphasize smp_read_barrier_depends
2017-12-05 11:57:53 -08:00
clearing-warn-once.txt
kernel debug: support resetting WARN*_ONCE
2017-11-17 16:10:00 -08:00
clk.txt
clk.txt: standardize document format
2017-07-14 13:51:29 -06:00
CodingStyle
…
conf.py
docs: Remove "could not extract kernel version" warning
2017-12-11 15:20:04 -07:00
cpu-load.txt
cpu-load: standardize document format
2017-07-14 13:51:30 -06:00
cputopology.txt
cputopology.txt: standardize document format
2017-07-14 13:51:30 -06:00
crc32.txt
crc32.txt: standardize document format
2017-07-14 13:51:30 -06:00
dcdbas.txt
dcdbas.txt: standardize document format
2017-07-14 13:51:31 -06:00
debugging-modules.txt
…
debugging-via-ohci1394.txt
debugging-via-ohci1394.txt: standardize document format
2017-07-14 13:51:34 -06:00
dell_rbu.txt
dell_rbu.txt: standardize document format
2017-07-14 13:58:12 -06:00
digsig.txt
digsig.txt: standardize document format
2017-07-14 13:51:31 -06:00
DMA-API-HOWTO.txt
DMA-API-HOWTO.txt: standardize document format
2017-07-14 13:51:32 -06:00
DMA-API.txt
dma-coherent: remove the DMA_MEMORY_MAP and DMA_MEMORY_IO flags
2017-09-01 11:59:17 +02:00
DMA-attributes.txt
DMA-attributes.txt: standardize document format
2017-07-14 13:51:33 -06:00
DMA-ISA-LPC.txt
DMA-ISA-LPC.txt: standardize document format
2017-07-14 13:51:33 -06:00
docutils.conf
…
dontdiff
Remove gperf usage from toolchain
2017-08-19 11:02:53 -07:00
efi-stub.txt
efi-stub.txt: standardize document format
2017-07-14 13:51:34 -06:00
eisa.txt
eisa.txt: standardize document format
2017-07-14 13:51:34 -06:00
flexible-arrays.txt
flexible-arrays.txt: standardize document format
2017-07-14 13:51:35 -06:00
futex-requeue-pi.txt
futex-requeue-pi.txt: standardize document format
2017-07-14 13:51:35 -06:00
gcc-plugins.txt
gcc-plugins.txt: standardize document format
2017-07-14 13:51:36 -06:00
highuid.txt
highuid.txt: standardize document format
2017-07-14 13:51:36 -06:00
hw_random.txt
hw_random.txt: standardize document format
2017-07-14 13:51:37 -06:00
hwspinlock.txt
hwspinlock.txt: standardize document format
2017-07-14 13:51:37 -06:00
index.rst
Documentation: Add license-rules.rst to describe how to properly identify file licenses
2018-01-06 10:58:02 -07:00
intel_txt.txt
intel_txt.txt: standardize document format
2017-07-14 13:51:38 -06:00
Intel-IOMMU.txt
Intel-IOMMU.txt: standardize document format
2017-07-14 13:51:38 -06:00
io_ordering.txt
io_ordering.txt: standardize document format
2017-07-14 13:51:39 -06:00
io-mapping.txt
io-mapping.txt: standardize document format
2017-07-14 13:51:38 -06:00
iostats.txt
iostats.txt: update it to cover recent Kernels
2017-07-14 13:51:40 -06:00
IPMI.txt
ipmi: Make IPMI panic strings always available
2017-09-27 16:03:45 -05:00
IRQ-affinity.txt
IRQ-affinity.txt: standardize document format
2017-07-14 13:51:41 -06:00
IRQ-domain.txt
irqdomain: Kill CONFIG_IRQ_DOMAIN_DEBUG
2018-01-24 12:32:58 +01:00
IRQ.txt
IRQ.txt: add a markup for its title
2017-07-14 13:51:42 -06:00
irqflags-tracing.txt
irqflags-tracing.txt: standardize document format
2017-07-14 13:51:42 -06:00
isa.txt
isa.txt: standardize document format
2017-07-14 13:51:43 -06:00
isapnp.txt
isapnp.txt: promote title level
2017-07-14 13:51:43 -06:00
kernel-per-CPU-kthreads.txt
kernel-per-CPU-kthreads.txt: standardize document format
2017-07-14 13:51:43 -06:00
kobject.txt
kobject.txt: standardize document format
2017-07-14 13:51:44 -06:00
kprobes.txt
kprobes/docs: Remove jprobes related documents
2017-10-20 11:02:55 +02:00
kref.txt
kref.txt: standardize document format
2017-07-14 13:51:45 -06:00
ldm.txt
ldm.txt: standardize document format
2017-07-14 13:51:45 -06:00
lockup-watchdogs.txt
lockup-watchdogs.txt: standardize document format
2017-07-14 13:51:46 -06:00
logo.gif
…
logo.txt
…
lsm.txt
docs-rst: convert lsm from DocBook to ReST
2017-05-16 08:44:19 -03:00
lzo.txt
lzo.txt: standardize document format
2017-07-14 13:51:46 -06:00
mailbox.txt
mailbox.txt: standardize document format
2017-07-14 13:51:47 -06:00
Makefile
Documentation: add script and build target to check for broken file references
2017-10-12 11:07:42 -06:00
memory-barriers.txt
doc: De-emphasize smp_read_barrier_depends
2017-12-05 11:57:53 -08:00
memory-hotplug.txt
memory-hotplug.txt: standardize document format
2017-07-14 13:57:53 -06:00
men-chameleon-bus.txt
men-chameleon-bus.txt: standardize document format
2017-07-14 13:57:54 -06:00
nommu-mmap.txt
nommu-mmap.txt: don't use all upper case on titles
2017-07-14 13:57:55 -06:00
ntb.txt
Merge tag 'standardize-docs' of git://git.lwn.net/linux
2017-07-15 12:58:58 -07:00
numastat.txt
numastat.txt: standardize document format
2017-07-14 13:57:56 -06:00
padata.txt
padata.txt: standardize document format
2017-07-14 13:57:56 -06:00
parport-lowlevel.txt
parport-lowlevel.txt: standardize document format
2017-07-14 13:57:57 -06:00
percpu-rw-semaphore.txt
percpu-rw-semaphore.txt: standardize document format
2017-07-14 13:57:58 -06:00
phy.txt
phy.txt: standardize document format
2017-07-14 13:57:58 -06:00
pi-futex.txt
Documentation: fix locking rt-mutex doc refs
2017-10-19 12:56:44 -06:00
pnp.txt
pnp.txt: standardize document format
2017-07-14 13:57:59 -06:00
preempt-locking.txt
preempt-locking.txt: standardize document format
2017-07-14 13:58:00 -06:00
pwm.txt
pwm: Standardize document format
2017-07-06 08:23:30 +02:00
rbtree.txt
rbtree: cache leftmost node internally
2017-09-08 18:26:48 -07:00
remoteproc.txt
remoteproc.txt: standardize document format
2017-07-14 13:58:02 -06:00
rfkill.txt
rfkill.txt: standardize document format
2017-07-14 13:58:02 -06:00
robust-futex-ABI.txt
robust-futex-ABI.txt: standardize document format
2017-07-14 13:58:03 -06:00
robust-futexes.txt
robust-futexes.txt: standardize document format
2017-07-14 13:58:03 -06:00
rpmsg.txt
rpmsg.txt: standardize document format
2017-07-14 13:58:04 -06:00
rtc.txt
Documentation: rtc: move iotcl interface documentation to ABI
2018-01-12 00:20:41 +01:00
SAK.txt
SAK.txt: standardize document format
2017-07-14 13:58:04 -06:00
sgi-ioc4.txt
sgi-ioc4.txt: standardize document format
2017-07-14 13:58:05 -06:00
siphash.txt
siphash.txt: standardize document format
2017-07-14 13:58:06 -06:00
SM501.txt
SM501.txt: standardize document format
2017-07-14 13:58:06 -06:00
smsc_ece1099.txt
smsc_ece1099.txt: standardize document format
2017-07-14 13:58:07 -06:00
speculation.txt
Documentation: Document array_index_nospec
2018-01-30 21:54:28 +01:00
static-keys.txt
jump_label: Provide hotplug context variants
2017-08-10 12:28:59 +02:00
SubmittingPatches
…
svga.txt
documentation/svga.txt: update outdated file
2017-11-20 10:45:50 -07:00
switchtec.txt
NTB: switchtec_ntb: Update switchtec documentation with notes for NTB
2017-11-18 20:37:13 -05:00
sync_file.txt
sync_file.txt: standardize document format
2017-05-24 13:01:27 -03:00
tee.txt
tee.txt: standardize document format
2017-07-14 13:58:14 -06:00
this_cpu_ops.txt
this_cpu_ops.txt: standardize document format
2017-07-14 13:58:08 -06:00
unaligned-memory-access.txt
unaligned-memory-access.txt: standardize document format
2017-07-14 13:58:09 -06:00
vfio-mediated-device.txt
vfio-mediated-device.txt: standardize document format
2017-07-14 13:58:10 -06:00
vfio.txt
vfio.txt: standardize document format
2017-07-14 13:58:10 -06:00
video-output.txt
…
xillybus.txt
xillybus.txt: standardize document format
2017-07-14 13:58:11 -06:00
xz.txt
xz.txt: standardize document format
2017-07-14 13:58:11 -06:00
zorro.txt
zorro.txt: standardize document format
2017-07-14 13:58:12 -06:00