Ard Biesheuvel
b05a28f475
ARM: 9012/1: move device tree mapping out of linear region ...
commit 7a1be318f5795cb66fa0dc86b3ace427fe68057f upstream
On ARM, setting up the linear region is tricky, given the constraints
around placement and alignment of the memblocks, and how the kernel
itself as well as the DT are placed in physical memory.
Let's simplify matters a bit, by moving the device tree mapping to the
top of the address space, right between the end of the vmalloc region
and the start of the the fixmap region, and create a read-only mapping
for it that is independent of the size of the linear region, and how it
is organized.
Since this region was formerly used as a guard region, which will now be
populated fully on LPAE builds by this read-only mapping (which will
still be able to function as a guard region for stray writes), bump the
start of the [underutilized] fixmap region by 512 KB as well, to ensure
that there is always a proper guard region here. Doing so still leaves
ample room for the fixmap space, even with NR_CPUS set to its maximum
value of 32.
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-19 10:08:32 +02:00
iio: improve IIO_CONCENTRATION channel type description
2020-08-19 08:16:07 +02:00
dm integrity: conditionally disable "recalculate" feature
2021-01-30 13:54:10 +01:00
ARM: 9012/1: move device tree mapping out of linear region
2021-05-19 10:08:32 +02:00
arm64: errata: Hide CTR_EL0.DIC on systems affected by Neoverse-N1 #1542419
2020-04-29 16:32:56 +02:00
docs: block: null_blk: enhance document style
2019-09-11 16:04:22 -06:00
Modules fixes for v5.4-rc3
2019-10-11 10:19:24 -07:00
Documentation: cpufreq: Update policy notifier documentation
2019-09-02 22:44:05 +02:00
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2019-09-18 12:11:14 -07:00
mm, page_owner: decouple freeing stack trace from debug_pagealloc
2019-10-14 15:04:00 -07:00
dt-bindings: net: ethernet-controller: fix typo in NVMEM
2021-04-14 08:24:18 +02:00
ata: make qc_prep return ata_completion_errors
2020-10-01 13:18:26 +02:00
fbdev: fix numbering of fbcon options
2020-02-24 08:36:42 +01:00
It's a somewhat calmer cycle for docs this time, as the churn of the mass
2019-09-17 16:22:26 -07:00
sysfs: Add sysfs_emit and sysfs_emit_at to format sysfs output
2021-03-07 12:20:48 +01:00
Documentation: fpga: dfl: add descriptions for virtualization and new interfaces.
2019-09-03 19:35:42 -07:00
hwmon: docs: Extend inspur-ipsps1 title underline
2019-10-07 05:56:57 -07:00
Documentation/infiniband: update name of some functions
2019-09-13 16:55:55 -03:00
kbuild: support LLVM=1 to switch the default tools to Clang/LLVM
2020-08-26 10:40:47 +02:00
docs: Add documentation for Symbol Namespaces
2019-09-10 10:30:49 +02:00
doc 🔒 remove reference to clever use of read-write lock
2019-09-14 01:53:27 -06:00
media: videodev2.h: RGB BT2020 and HSV are always full range
2020-11-05 11:43:15 +01:00
Main MIPS changes for v5.4:
2019-09-22 09:30:30 -07:00
can: j1939: swap addr and pgn in the send example
2020-11-18 19:20:19 +01:00
Merge branches 'pm-opp', 'pm-qos', 'acpi-pm', 'pm-domains' and 'pm-tools'
2019-09-17 09:49:19 +02:00
docs: powerpc: Add missing documentation reference
2019-09-17 23:59:34 +10:00
Documentation/process: Add fallthrough pseudo-keyword
2019-10-11 09:26:05 -07:00
It's a somewhat calmer cycle for docs this time, as the churn of the mass
2019-09-17 16:22:26 -07:00
scsi: smartpqi: Update attribute name to driver_version
2020-01-17 19:48:27 +01:00
Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
2019-09-27 19:37:27 -07:00
ALSA: hda/realtek - Remove now-unnecessary XPS 13 headphone noise fixups
2020-04-17 10:50:08 +02:00
Tracing updates:
2019-09-20 11:19:48 -07:00
doc: arm64: fix grammar dtb placed in no attributes region
2019-09-06 08:44:34 -06:00
USB: rio500: Remove Rio 500 kernel driver
2019-10-04 10:53:36 +02:00
KVM: arm64: Reject VM creation when the default IPA size is unsupported
2021-03-17 17:03:57 +01:00
mm: treewide: clarify pgtable_page_{ctor,dtor}() naming
2019-09-26 10:10:44 -07:00
linux-watchdog 5.4-rc1 tag
2019-09-27 11:17:38 -07:00
x86/CPU/AMD: Save AMD NodeId as cpu_die_id
2020-12-30 11:51:47 +01:00
xtensa: fix TLBTEMP area placement
2020-11-24 13:29:22 +01:00
linkage: Introduce new macros for assembler symbols
2020-11-10 12:37:24 +01:00
dma-mapping: remove dma_release_declared_memory
2019-09-04 11:13:19 +02:00
linkage: Introduce new macros for assembler symbols
2020-11-10 12:37:24 +01:00
lib/lzo: fix ambiguous encoding bug in lzo-rle
2020-06-17 16:40:28 +02:00
padata: allocate workqueue internally
2019-09-13 21:15:39 +10:00
b05a28f475
