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Bindings for other NXP pin controllers expect pin configuration nodes in
pinctrl to match certain naming, so adjust these as well, even though
their bindings are not yet in dtschema format.
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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Bindings expect pin configuration nodes in pinctrl to match certain
naming:
imx6ul-kontron-bl.dtb: pinctrl@20e0000: 'usbotg1' does not match any of the regexes: 'grp$', 'pinctrl-[0-9]+'
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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Drop an empty pin configuration node placeholder, because bindings
require 'fsl,pins' property:
imx6ul-tx6ul-0010.dtb: pinctrl@20e0000: hoggrp: 'fsl,pins' is a required property
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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According to fsl,saif.yaml, fsl,saif-master is a phandle to the master
SAIF.
Change it accordingly, to fix the following dt-schema warnings:
saif@80042000: fsl,saif-master: True is not of type 'array'
saif@80042000: Unevaluated properties are not allowed ('fsl,saif-master' was unexpected)
Signed-off-by: Fabio Estevam <[email protected]>
Acked-By: Lothar Waßmann <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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The property is "fsl,pins", not "fsl,pin". Wrong property means the pin
configuration was not applied. Fixes dtbs_check warnings:
imx6ull-seeed-npi-dev-board-emmc.dtb: pinctrl@20e0000: uart1grp: 'fsl,pins' is a required property
imx6ull-seeed-npi-dev-board-emmc.dtb: pinctrl@20e0000: uart1grp: 'fsl,pin' does not match any of the regexes: 'pinctrl-[0-9]+'
Cc: [email protected]
Fixes: e3b5697195c8 ("ARM: dts: imx6ull: add seeed studio NPi dev board")
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Parthiban Nallathambi <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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The property is "fsl,pins", not "fsl,pin". Wrong property means the pin
configuration was not applied. Fixes dtbs_check warnings:
imx6ul-geam.dtb: pinctrl@20e0000: tscgrp: 'fsl,pins' is a required property
imx6ul-geam.dtb: pinctrl@20e0000: tscgrp: 'fsl,pin' does not match any of the regexes: 'pinctrl-[0-9]+'
Cc: [email protected]
Fixes: a58e4e608bc8 ("ARM: dts: imx6ul-geam: Add Engicam IMX6UL GEA M6UL initial support")
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Michael Trimarchi <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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According to simple-bus.yaml, apbh and apbx are not valid bus names.
Rename them to apbh-bus and apbx-bus to fix the following dt-schema
warnings:
'apbh@80000000' does not match '^([a-z][a-z0-9\\-]+-bus|bus|localbus|soc|axi|ahb|apb)(@.+)?$'
'apbx@80040000' does not match '^([a-z][a-z0-9\\-]+-bus|bus|localbus|soc|axi|ahb|apb)(@.+)?$'
Signed-off-by: Fabio Estevam <[email protected]>
Reviewed-by: Lukasz Majewski <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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Since the muxing is described already in imx6qdl-tqma6 can be reused
by this variant. No functional change.
Signed-off-by: Markus Niebel <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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Use national,lm75a to specify exact variant used. This should cause
no functional changes.
Signed-off-by: Markus Niebel <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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Use national,lm75a to specify exact variant used. This should cause
no functional changes.
While at it change node name to 'temperature-sensor@48' to
describe the function of the IC.
Signed-off-by: Markus Niebel <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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Move the pinmux entries to the variant where they are actual
used. No functional changes.
Signed-off-by: Markus Niebel <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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Bindings expect pin configuration nodes in pinctrl to match certain
naming and not be part of another fake node:
imx7d-sdb-sht11.dtb: pinctrl@30330000: 'imx7d-sdb' does not match any of the regexes: 'grp$', 'pinctrl-[0-9]+'
Drop the "imx7d-sdb" wrapping node and adjust the names to have "grp"
prefix. Diff looks big but this should have no functional impact.
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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Bindings expect pin configuration nodes in pinctrl to match certain
naming:
imx7s-colibri-eval-v3.dtb: pinctrl@30330000: 'lvdstx' does not match any of the regexes: 'grp$', 'pinctrl-[0-9]+'
imx7s-warp.dtb: pinctrl@30330000: 'usdhc3grp_100mhz', 'usdhc3grp_200mhz' do not match any of the regexes: 'grp$', 'pinctrl-[0-9]+'
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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There is no "fsl,phy" property in pin controller pincfg nodes:
imx7d-zii-rmu2.dtb: pinctrl@302c0000: enet1phyinterruptgrp: 'fsl,pins' is a required property
imx7d-zii-rmu2.dtb: pinctrl@302c0000: enet1phyinterruptgrp: 'fsl,phy' does not match any of the regexes: 'pinctrl-[0-9]+'
Fixes: f496e6750083 ("ARM: dts: Add ZII support for ZII i.MX7 RMU2 board")
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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The merge of imx-spdif driver into fsl-asoc-card brought
new DT properties that can be used with the "fsl,imx-audio-spdif"
compatible:
* The "spdif-controller" property from imx-spdif is named "audio-cpu"
in fsl-asoc-card.
* fsl-asoc-card uses codecs explicitly declared in DT
with "audio-codec".
With an S/PDIF, codec drivers spdif_transmitter and
spdif_receiver should be used.
Driver imx-spdif used instead the dummy codec and a pair of
boolean properties, "spdif-in" and "spdif-out".
While backward compatibility is kept to support properties
"spdif-controller", "spdif-in" and "spdif-out", using new properties has
several benefits:
* "audio-cpu" and "audio-codec" are more generic names reflecting
that the fsl-asoc-card driver supports multiple hardware.
They are properties already used by devices using the
fsl-asoc-card driver.
They are also similar to properties of simple-card: "cpu" and "codec".
* "spdif-in" and "spdif-out" imply the use of the dummy codec in the
driver. However, there are already two codec drivers for the S/PDIF,
spdif_transmitter and spdif_receiver.
It is better to declare S/PDIF Tx and Rx devices in a DT, and then
reference them with "audio-codec" than using the dummy codec.
For those reasons, this commit updates in-tree DTs to use the new
properties:
* Rename "spdif-controller" property to "audio-cpu".
* Declare S/PDIF transmitter and/or receiver devices, and use them with
the "audio-codec" property instead of "spdif-out" and/or "spdif-in".
These modifications were tested only on an imx8mn-evk board.
Note that out-of-tree and old DTs are still supported.
Signed-off-by: Elinor Montmasson <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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The regulator should not be placed under simple-bus.
Remove it from simple-bus to fix the following dt-schema warnings:
'regulators' does not match '^([a-z][a-z0-9\\-]+-bus|bus|localbus|soc|axi|ahb|apb)(@.+)?$'
regulators: #size-cells:0:0: 0 is not one of [1, 2]
regulators: regulator@0:reg:0: [0] is too short
regulators: 'ranges' is a required property
Signed-off-by: Fabio Estevam <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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Use national,lm75a to specify exact variant used. This should cause
no functional changes.
Signed-off-by: Markus Niebel <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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Enable IIO hwmon support for ADC1 and ADC2. All channels are
available on X23 (ADC2) and X24 (ADC1) of MBa7x.
Signed-off-by: Markus Niebel <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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According to fsl,imx-dma.yaml, the node name must be dma-controller.
Change it accordingly to fix the following dt-schema warnings:
'dma@10001000' does not match '^dma-controller(@.*)?$'
Signed-off-by: Fabio Estevam <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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It's not necessary to split display0 node. Merge it to save two lines.
Signed-off-by: Liu Ying <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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SII9022 and TVE are connected with IPU DI0 and IPU DI1 respectively, so
they are in two different display pipelines and may run simultaneously.
Keep TVE being enabled as imx53-qsb-common.dtsi does by not setting it's
status property to "disabled".
Fixes: eeb403df953f ("ARM: dts: imx53-qsb: add support for the HDMI expander")
Signed-off-by: Liu Ying <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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By default, the ENET_REF is configured at 125MHz on i.MX6SX, which works
well for boards that operate in RGMII mode.
The imx6sx-udoo-neo has a KSZ8091 Ethernet PHY that is connected via
RMII interface, so a 50MHz ENET_REF clock is expected.
Describe the IMX6SX_CLK_ENET_REF accordingly.
Signed-off-by: Fabio Estevam <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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Commit 3a7e02c040b1 ("minmax: avoid overly complicated constant
expressions in VM code") added the simpler MIN_T/MAX_T macros in order
to avoid some excessive expansion from the rather complicated regular
min/max macros.
The complexity of those macros stems from two issues:
(a) trying to use them in situations that require a C constant
expression (in static initializers and for array sizes)
(b) the type sanity checking
and MIN_T/MAX_T avoids both of these issues.
Now, in the whole (long) discussion about all this, it was pointed out
that the whole type sanity checking is entirely unnecessary for
min_t/max_t which get a fixed type that the comparison is done in.
But that still leaves min_t/max_t unnecessarily complicated due to
worries about the C constant expression case.
However, it turns out that there really aren't very many cases that use
min_t/max_t for this, and we can just force-convert those.
This does exactly that.
Which in turn will then allow for much simpler implementations of
min_t()/max_t(). All the usual "macros in all upper case will evaluate
the arguments multiple times" rules apply.
We should do all the same things for the regular min/max() vs MIN/MAX()
cases, but that has the added complexity of various drivers defining
their own local versions of MIN/MAX, so that needs another level of
fixes first.
Link: https://lore.kernel.org/all/[email protected]/
Cc: David Laight <[email protected]>
Cc: Lorenzo Stoakes <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull more devicetree updates from Rob Herring:
"Most of this is a treewide change to of_property_for_each_u32() which
was small enough to do in one go before rc1 and avoids the need to
create of_property_for_each_u32_some_new_name().
- Treewide conversion of of_property_for_each_u32() to drop internal
arguments making struct property opaque
- Add binding for Amlogic A4 SoC watchdog
- Fix constraints for AD7192 'single-channel' property"
* tag 'devicetree-fixes-for-6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
dt-bindings: iio: adc: ad7192: Fix 'single-channel' constraints
of: remove internal arguments from of_property_for_each_u32()
dt-bindings: watchdog: add support for Amlogic A4 SoCs
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull more RISC-V updates from Palmer Dabbelt:
- Support for NUMA (via SRAT and SLIT), console output (via SPCR), and
cache info (via PPTT) on ACPI-based systems.
- The trap entry/exit code no longer breaks the return address stack
predictor on many systems, which results in an improvement to trap
latency.
- Support for HAVE_ARCH_STACKLEAK.
- The sv39 linear map has been extended to support 128GiB mappings.
- The frequency of the mtime CSR is now visible via hwprobe.
* tag 'riscv-for-linus-6.11-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (21 commits)
RISC-V: Provide the frequency of time CSR via hwprobe
riscv: Extend sv39 linear mapping max size to 128G
riscv: enable HAVE_ARCH_STACKLEAK
riscv: signal: Remove unlikely() from WARN_ON() condition
riscv: Improve exception and system call latency
RISC-V: Select ACPI PPTT drivers
riscv: cacheinfo: initialize cacheinfo's level and type from ACPI PPTT
riscv: cacheinfo: remove the useless input parameter (node) of ci_leaf_init()
RISC-V: ACPI: Enable SPCR table for console output on RISC-V
riscv: boot: remove duplicated targets line
trace: riscv: Remove deprecated kprobe on ftrace support
riscv: cpufeature: Extract common elements from extension checking
riscv: Introduce vendor variants of extension helpers
riscv: Add vendor extensions to /proc/cpuinfo
riscv: Extend cpufeature.c to detect vendor extensions
RISC-V: run savedefconfig for defconfig
RISC-V: hwprobe: sort EXT_KEY()s in hwprobe_isa_ext0() alphabetically
ACPI: NUMA: replace pr_info with pr_debug in arch_acpi_numa_init
ACPI: NUMA: change the ACPI_NUMA to a hidden option
ACPI: NUMA: Add handler for SRAT RINTC affinity structure
...
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
"Two fixes for issues introduced in this merge window:
- fix enhanced debugging in the Xen multicall handling
- two patches fixing a boot failure when running as dom0 in PVH mode"
* tag 'for-linus-6.11-rc1a-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
x86/xen: fix memblock_reserve() usage on PVH
x86/xen: move xen_reserve_extra_memory()
xen: fix multicall debug data referencing
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We have some very fancy min/max macros that have tons of sanity checking
to warn about mixed signedness etc.
This is all things that a sane compiler should warn about, but there are
no sane compiler interfaces for this, and '-Wsign-compare' is broken [1]
and not useful.
So then we compensate (some would say over-compensate) by doing the
checks manually with some truly horrid macro games.
And no, we can't just use __builtin_types_compatible_p(), because the
whole question of "does it make sense to compare these two values" is a
lot more complicated than that.
For example, it makes a ton of sense to compare unsigned values with
simple constants like "5", even if that is indeed a signed type. So we
have these very strange macros to try to make sensible type checking
decisions on the arguments to 'min()' and 'max()'.
But that can cause enormous code expansion if the min()/max() macros are
used with complicated expressions, and particularly if you nest these
things so that you get the first big expansion then expanded again.
The xen setup.c file ended up ballooning to over 50MB of preprocessed
noise that takes 15s to compile (obviously depending on the build host),
largely due to one single line.
So let's split that one single line to just be simpler. I think it ends
up being more legible to humans too at the same time. Now that single
file compiles in under a second.
Reported-and-reviewed-by: Lorenzo Stoakes <[email protected]>
Link: https://lore.kernel.org/all/[email protected]/
Link: https://staticthinking.wordpress.com/2023/07/25/wsign-compare-is-garbage/ [1]
Cc: David Laight <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull more s390 updates from Vasily Gorbik:
- Fix KMSAN build breakage caused by the conflict between s390 and
mm-stable trees
- Add KMSAN page markers for ptdump
- Add runtime constant support
- Fix __pa/__va for modules under non-GPL licenses by exporting
necessary vm_layout struct with EXPORT_SYMBOL to prevent linkage
problems
- Fix an endless loop in the CF_DIAG event stop in the CPU Measurement
Counter Facility code when the counter set size is zero
- Remove the PROTECTED_VIRTUALIZATION_GUEST config option and enable
its functionality by default
- Support allocation of multiple MSI interrupts per device and improve
logging of architecture-specific limitations
- Add support for lowcore relocation as a debugging feature to catch
all null ptr dereferences in the kernel address space, improving
detection beyond the current implementation's limited write access
protection
- Clean up and rework CPU alternatives to allow for callbacks and early
patching for the lowcore relocation
* tag 's390-6.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (39 commits)
s390: Remove protvirt and kvm config guards for uv code
s390/boot: Add cmdline option to relocate lowcore
s390/kdump: Make kdump ready for lowcore relocation
s390/entry: Make system_call() ready for lowcore relocation
s390/entry: Make ret_from_fork() ready for lowcore relocation
s390/entry: Make __switch_to() ready for lowcore relocation
s390/entry: Make restart_int_handler() ready for lowcore relocation
s390/entry: Make mchk_int_handler() ready for lowcore relocation
s390/entry: Make int handlers ready for lowcore relocation
s390/entry: Make pgm_check_handler() ready for lowcore relocation
s390/entry: Add base register to CHECK_VMAP_STACK/CHECK_STACK macro
s390/entry: Add base register to SIEEXIT macro
s390/entry: Add base register to MBEAR macro
s390/entry: Make __sie64a() ready for lowcore relocation
s390/head64: Make startup code ready for lowcore relocation
s390: Add infrastructure to patch lowcore accesses
s390/atomic_ops: Disable flag outputs constraint for GCC versions below 14.2.0
s390/entry: Move SIE indicator flag to thread info
s390/nmi: Simplify ptregs setup
s390/alternatives: Remove alternative facility list
...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"The usual summary below, but the main fix is for the fast GUP lockless
page-table walk when we have a combination of compile-time and
run-time folding of the p4d and the pud respectively.
- Remove some redundant Kconfig conditionals
- Fix string output in ptrace selftest
- Fix fast GUP crashes in some page-table configurations
- Remove obsolete linker option when building the vDSO
- Fix some sysreg field definitions for the GIC"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: mm: Fix lockless walks with static and dynamic page-table folding
arm64/sysreg: Correct the values for GICv4.1
arm64/vdso: Remove --hash-style=sysv
kselftest: missing arg in ptrace.c
arm64/Kconfig: Remove redundant 'if HAVE_FUNCTION_GRAPH_TRACER'
arm64: remove redundant 'if HAVE_ARCH_KASAN' in Kconfig
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Pull struct file leak fixes from Al Viro:
"a couple of leaks on failure exits missing fdput()"
* tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
lirc: rc_dev_get_from_fd(): fix file leak
powerpc: fix a file leak in kvm_vcpu_ioctl_enable_cap()
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On arm64 we build compressed images, but "make install" by default will
install the old non-compressed one. To actually get the compressed
image install, you need to use "make zinstall", which is not the usual
way to install a kernel.
Which may not sound like much of an issue, but when you deal with
multiple architectures (and years of your fingers knowing the regular
"make install" incantation), this inconsistency is pretty annoying.
But as Will Deacon says:
"Sadly, bootloaders being as top quality as you might expect, I don't
think we're in a position to rely on decompressor support across the
board. Our Image.gz is literally just that -- we don't have a built-in
decompressor (nor do I think we want to rush into that again after the
fun we had on arm32) and the recent EFI zboot support solves that
problem for platforms using EFI.
Changing the default 'install' target terrifies me. There are bound to
be folks with embedded boards who've scripted this and we could really
ruin their day if we quietly give them a compressed kernel that their
bootloader doesn't know how to handle :/"
So make this conditional on a new "COMPRESSED_INSTALL" option.
Cc: Catalin Marinas <[email protected]>
Acked-by: Will Deacon <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Pull bitmap updates from Yury Norov:
"Random fixes"
* tag 'bitmap-6.11-rc1' of https://github.com:/norov/linux:
riscv: Remove unnecessary int cast in variable_fls()
radix tree test suite: put definition of bitmap_clear() into lib/bitmap.c
bitops: Add a comment explaining the double underscore macros
lib: bitmap: add missing MODULE_DESCRIPTION() macros
cpumask: introduce assign_cpu() macro
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The RISC-V architecture makes a real time counter CSR (via RDTIME
instruction) available for applications in U-mode but there is no
architected mechanism for an application to discover the frequency
the counter is running at. Some applications (e.g., DPDK) use the
time counter for basic performance analysis as well as fine grained
time-keeping.
Add support to the hwprobe system call to export the time CSR
frequency to code running in U-mode.
Signed-off-by: Yunhui Cui <[email protected]>
Reviewed-by: Evan Green <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
Acked-by: Punit Agrawal <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Palmer Dabbelt <[email protected]>
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This harmonizes all virtual addressing modes which can now all map
(PGDIR_SIZE * PTRS_PER_PGD) / 4 of physical memory.
The RISCV implementation of KASAN requires that the boundary between
shallow mappings are aligned on an 8G boundary. In this case we need
VMALLOC_START to be 8G aligned. So although we only need to move the
start of the linear mapping down by 4GiB to allow 128GiB to be mapped,
we actually move it down by 8GiB (creating a 4GiB hole between the
linear mapping and KASAN shadow space) to maintain the alignment
requirement.
Signed-off-by: Stuart Menefy <[email protected]>
Reviewed-by: Alexandre Ghiti <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Palmer Dabbelt <[email protected]>
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This series adds support for ACPI PPTT via cacheinfo.
* b4-shazam-merge:
RISC-V: Select ACPI PPTT drivers
riscv: cacheinfo: initialize cacheinfo's level and type from ACPI PPTT
riscv: cacheinfo: remove the useless input parameter (node) of ci_leaf_init()
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Palmer Dabbelt <[email protected]>
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Sia Jee Heng <[email protected]> says:
The ACPI SPCR code has been used to enable console output for ARM64 and
X86. The same code can be reused for RISC-V. Furthermore, SPCR table is
mandated for headless system as outlined in the RISC-V BRS
Specification, chapter 6.
* b4-shazam-merge:
RISC-V: ACPI: Enable SPCR table for console output on RISC-V
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Palmer Dabbelt <[email protected]>
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Add support for the stackleak feature. Whenever the kernel returns to user
space the kernel stack is filled with a poison value.
At the same time, disables the plugin in EFI stub code because EFI stub
is out of scope for the protection.
Tested on qemu and milkv duo:
/ # echo STACKLEAK_ERASING > /sys/kernel/debug/provoke-crash/DIRECT
[ 38.675575] lkdtm: Performing direct entry STACKLEAK_ERASING
[ 38.678448] lkdtm: stackleak stack usage:
[ 38.678448] high offset: 288 bytes
[ 38.678448] current: 496 bytes
[ 38.678448] lowest: 1328 bytes
[ 38.678448] tracked: 1328 bytes
[ 38.678448] untracked: 448 bytes
[ 38.678448] poisoned: 14312 bytes
[ 38.678448] low offset: 8 bytes
[ 38.689887] lkdtm: OK: the rest of the thread stack is properly erased
Signed-off-by: Jisheng Zhang <[email protected]>
Reviewed-by: Charlie Jenkins <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Palmer Dabbelt <[email protected]>
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"WARN_ON(unlikely(x))" is excessive. WARN_ON() already uses unlikely()
internally.
Signed-off-by: Zhongqiu Han <[email protected]>
Reviewed-by: Bjorn Andersson <[email protected]>
Reviewed-by: Andy Chiu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Palmer Dabbelt <[email protected]>
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Many CPUs implement return address branch prediction as a stack. The
RISCV architecture refers to this as a return address stack (RAS). If
this gets corrupted then the CPU will mispredict at least one but
potentally many function returns.
There are two issues with the current RISCV exception code:
- We are using the alternate link stack (x5/t0) for the indirect branch
which makes the hardware think this is a function return. This will
corrupt the RAS.
- We modify the return address of handle_exception to point to
ret_from_exception. This will also corrupt the RAS.
Testing the null system call latency before and after the patch:
Visionfive2 (StarFive JH7110 / U74)
baseline: 189.87 ns
patched: 176.76 ns
Lichee pi 4a (T-Head TH1520 / C910)
baseline: 666.58 ns
patched: 636.90 ns
Just over 7% on the U74 and just over 4% on the C910.
Signed-off-by: Anton Blanchard <[email protected]>
Signed-off-by: Cyril Bur <[email protected]>
Tested-by: Jisheng Zhang <[email protected]>
Reviewed-by: Jisheng Zhang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Palmer Dabbelt <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl
Pull sysctl constification from Joel Granados:
"Treewide constification of the ctl_table argument of proc_handlers
using a coccinelle script and some manual code formatting fixups.
This is a prerequisite to moving the static ctl_table structs into
read-only data section which will ensure that proc_handler function
pointers cannot be modified"
* tag 'constfy-sysctl-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl:
sysctl: treewide: constify the ctl_table argument of proc_handlers
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git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS updates from Thomas Bogendoerfer:
- Use improved timer sync for Loongson64
- Fix address of GCR_ACCESS register
- Add missing MODULE_DESCRIPTION
* tag 'mips_6.11_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
mips: sibyte: add missing MODULE_DESCRIPTION() macro
MIPS: SMP-CPS: Fix address for GCR_ACCESS register for CM3 and later
MIPS: Loongson64: Switch to SYNC_R4K
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
"The gettimeofday() and clock_gettime() syscalls are now available as
vDSO functions, and Dave added a patch which allows to use NVMe cards
in the PCI slots as fast and easy alternative to SCSI discs.
Summary:
- add gettimeofday() and clock_gettime() vDSO functions
- enable PCI_MSI_ARCH_FALLBACKS to allow PCI to PCIe bridge adaptor
with PCIe NVME card to function in parisc machines
- allow users to reduce kernel unaligned runtime warnings
- minor code cleanups"
* tag 'parisc-for-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Add support for CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN
parisc: Use max() to calculate parisc_tlb_flush_threshold
parisc: Fix warning at drivers/pci/msi/msi.h:121
parisc: Add 64-bit gettimeofday() and clock_gettime() vDSO functions
parisc: Add 32-bit gettimeofday() and clock_gettime() vDSO functions
parisc: Clean up unistd.h file
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git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux
Pull UML updates from Richard Weinberger:
- Support for preemption
- i386 Rust support
- Huge cleanup by Benjamin Berg
- UBSAN support
- Removal of dead code
* tag 'uml-for-linus-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux: (41 commits)
um: vector: always reset vp->opened
um: vector: remove vp->lock
um: register power-off handler
um: line: always fill *error_out in setup_one_line()
um: remove pcap driver from documentation
um: Enable preemption in UML
um: refactor TLB update handling
um: simplify and consolidate TLB updates
um: remove force_flush_all from fork_handler
um: Do not flush MM in flush_thread
um: Delay flushing syscalls until the thread is restarted
um: remove copy_context_skas0
um: remove LDT support
um: compress memory related stub syscalls while adding them
um: Rework syscall handling
um: Add generic stub_syscall6 function
um: Create signal stack memory assignment in stub_data
um: Remove stub-data.h include from common-offsets.h
um: time-travel: fix signal blocking race/hang
um: time-travel: remove time_exit()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is the big set of driver core changes for 6.11-rc1.
Lots of stuff in here, with not a huge diffstat, but apis are evolving
which required lots of files to be touched. Highlights of the changes
in here are:
- platform remove callback api final fixups (Uwe took many releases
to get here, finally!)
- Rust bindings for basic firmware apis and initial driver-core
interactions.
It's not all that useful for a "write a whole driver in rust" type
of thing, but the firmware bindings do help out the phy rust
drivers, and the driver core bindings give a solid base on which
others can start their work.
There is still a long way to go here before we have a multitude of
rust drivers being added, but it's a great first step.
- driver core const api changes.
This reached across all bus types, and there are some fix-ups for
some not-common bus types that linux-next and 0-day testing shook
out.
This work is being done to help make the rust bindings more safe,
as well as the C code, moving toward the end-goal of allowing us to
put driver structures into read-only memory. We aren't there yet,
but are getting closer.
- minor devres cleanups and fixes found by code inspection
- arch_topology minor changes
- other minor driver core cleanups
All of these have been in linux-next for a very long time with no
reported problems"
* tag 'driver-core-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (55 commits)
ARM: sa1100: make match function take a const pointer
sysfs/cpu: Make crash_hotplug attribute world-readable
dio: Have dio_bus_match() callback take a const *
zorro: make match function take a const pointer
driver core: module: make module_[add|remove]_driver take a const *
driver core: make driver_find_device() take a const *
driver core: make driver_[create|remove]_file take a const *
firmware_loader: fix soundness issue in `request_internal`
firmware_loader: annotate doctests as `no_run`
devres: Correct code style for functions that return a pointer type
devres: Initialize an uninitialized struct member
devres: Fix memory leakage caused by driver API devm_free_percpu()
devres: Fix devm_krealloc() wasting memory
driver core: platform: Switch to use kmemdup_array()
driver core: have match() callback in struct bus_type take a const *
MAINTAINERS: add Rust device abstractions to DRIVER CORE
device: rust: improve safety comments
MAINTAINERS: add Danilo as FIRMWARE LOADER maintainer
MAINTAINERS: add Rust FW abstractions to FIRMWARE LOADER
firmware: rust: improve safety comments
...
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Lina reports random oopsen originating from the fast GUP code when
16K pages are used with 4-level page-tables, the fourth level being
folded at runtime due to lack of LPA2.
In this configuration, the generic implementation of
p4d_offset_lockless() will return a 'p4d_t *' corresponding to the
'pgd_t' allocated on the stack of the caller, gup_fast_pgd_range().
This is normally fine, but when the fourth level of page-table is folded
at runtime, pud_offset_lockless() will offset from the address of the
'p4d_t' to calculate the address of the PUD in the same page-table page.
This results in a stray stack read when the 'p4d_t' has been allocated
on the stack and can send the walker into the weeds.
Fix the problem by providing our own definition of p4d_offset_lockless()
when CONFIG_PGTABLE_LEVELS <= 4 which returns the real page-table
pointer rather than the address of the local stack variable.
Cc: Catalin Marinas <[email protected]>
Cc: Ard Biesheuvel <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Fixes: 0dd4f60a2c76 ("arm64: mm: Add support for folding PUDs at runtime")
Reported-by: Asahi Lina <[email protected]>
Reviewed-by: Ard Biesheuvel <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>
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The of_property_for_each_u32() macro needs five parameters, two of which
are primarily meant as internal variables for the macro itself (in the
for() clause). Yet these two parameters are used by a few drivers, and this
can be considered misuse or at least bad practice.
Now that the kernel uses C11 to build, these two parameters can be avoided
by declaring them internally, thus changing this pattern:
struct property *prop;
const __be32 *p;
u32 val;
of_property_for_each_u32(np, "xyz", prop, p, val) { ... }
to this:
u32 val;
of_property_for_each_u32(np, "xyz", val) { ... }
However two variables cannot be declared in the for clause even with C11,
so declare one struct that contain the two variables we actually need. As
the variables inside this struct are not meant to be used by users of this
macro, give the struct instance the noticeable name "_it" so it is visible
during code reviews, helping to avoid new code to use it directly.
Most usages are trivially converted as they do not use those two
parameters, as expected. The non-trivial cases are:
- drivers/clk/clk.c, of_clk_get_parent_name(): easily doable anyway
- drivers/clk/clk-si5351.c, si5351_dt_parse(): this is more complex as the
checks had to be replicated in a different way, making code more verbose
and somewhat uglier, but I refrained from a full rework to keep as much
of the original code untouched having no hardware to test my changes
All the changes have been build tested. The few for which I have the
hardware have been runtime-tested too.
Reviewed-by: Andre Przywara <[email protected]> # drivers/clk/sunxi/clk-simple-gates.c, drivers/clk/sunxi/clk-sun8i-bus-gates.c
Acked-by: Bartosz Golaszewski <[email protected]> # drivers/gpio/gpio-brcmstb.c
Acked-by: Nicolas Ferre <[email protected]> # drivers/irqchip/irq-atmel-aic-common.c
Acked-by: Jonathan Cameron <[email protected]> # drivers/iio/adc/ti_am335x_adc.c
Acked-by: Uwe Kleine-König <[email protected]> # drivers/pwm/pwm-samsung.c
Acked-by: Richard Leitner <[email protected]> # drivers/usb/misc/usb251xb.c
Acked-by: Mark Brown <[email protected]> # sound/soc/codecs/arizona.c
Reviewed-by: Richard Fitzgerald <[email protected]> # sound/soc/codecs/arizona.c
Acked-by: Michael Ellerman <[email protected]> # arch/powerpc/sysdev/xive/spapr.c
Acked-by: Stephen Boyd <[email protected]> # clk
Signed-off-by: Luca Ceresoli <[email protected]>
Acked-by: Lee Jones <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Rob Herring (Arm) <[email protected]>
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The current usage of memblock_reserve() in init_pvh_bootparams() is done before
the .bss is zeroed, and that used to be fine when
memblock_reserved_init_regions implicitly ended up in the .meminit.data
section. However after commit 73db3abdca58c memblock_reserved_init_regions
ends up in the .bss section, thus breaking it's usage before the .bss is
cleared.
Move and rename the call to xen_reserve_extra_memory() so it's done in the
x86_init.oem.arch_setup hook, which gets executed after the .bss has been
zeroed, but before calling e820__memory_setup().
Fixes: 73db3abdca58c ("init/modpost: conditionally check section mismatch to __meminit*")
Signed-off-by: Roger Pau Monné <[email protected]>
Reviewed-by: Juergen Gross <[email protected]>
Message-ID: <[email protected]>
Signed-off-by: Juergen Gross <[email protected]>
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In preparation for making the function static.
No functional change.
Signed-off-by: Roger Pau Monné <[email protected]>
Reviewed-by: Juergen Gross <[email protected]>
Message-ID: <[email protected]>
Signed-off-by: Juergen Gross <[email protected]>
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const qualify the struct ctl_table argument in the proc_handler function
signatures. This is a prerequisite to moving the static ctl_table
structs into .rodata data which will ensure that proc_handler function
pointers cannot be modified.
This patch has been generated by the following coccinelle script:
```
virtual patch
@r1@
identifier ctl, write, buffer, lenp, ppos;
identifier func !~ "appldata_(timer|interval)_handler|sched_(rt|rr)_handler|rds_tcp_skbuf_handler|proc_sctp_do_(hmac_alg|rto_min|rto_max|udp_port|alpha_beta|auth|probe_interval)";
@@
int func(
- struct ctl_table *ctl
+ const struct ctl_table *ctl
,int write, void *buffer, size_t *lenp, loff_t *ppos);
@r2@
identifier func, ctl, write, buffer, lenp, ppos;
@@
int func(
- struct ctl_table *ctl
+ const struct ctl_table *ctl
,int write, void *buffer, size_t *lenp, loff_t *ppos)
{ ... }
@r3@
identifier func;
@@
int func(
- struct ctl_table *
+ const struct ctl_table *
,int , void *, size_t *, loff_t *);
@r4@
identifier func, ctl;
@@
int func(
- struct ctl_table *ctl
+ const struct ctl_table *ctl
,int , void *, size_t *, loff_t *);
@r5@
identifier func, write, buffer, lenp, ppos;
@@
int func(
- struct ctl_table *
+ const struct ctl_table *
,int write, void *buffer, size_t *lenp, loff_t *ppos);
```
* Code formatting was adjusted in xfs_sysctl.c to comply with code
conventions. The xfs_stats_clear_proc_handler,
xfs_panic_mask_proc_handler and xfs_deprecated_dointvec_minmax where
adjusted.
* The ctl_table argument in proc_watchdog_common was const qualified.
This is called from a proc_handler itself and is calling back into
another proc_handler, making it necessary to change it as part of the
proc_handler migration.
Co-developed-by: Thomas Weißschuh <[email protected]>
Signed-off-by: Thomas Weißschuh <[email protected]>
Co-developed-by: Joel Granados <[email protected]>
Signed-off-by: Joel Granados <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/crng/random
Pull random number generator updates from Jason Donenfeld:
"This adds getrandom() support to the vDSO.
First, it adds a new kind of mapping to mmap(2), MAP_DROPPABLE, which
lets the kernel zero out pages anytime under memory pressure, which
enables allocating memory that never gets swapped to disk but also
doesn't count as being mlocked.
Then, the vDSO implementation of getrandom() is introduced in a
generic manner and hooked into random.c.
Next, this is implemented on x86. (Also, though it's not ready for
this pull, somebody has begun an arm64 implementation already)
Finally, two vDSO selftests are added.
There are also two housekeeping cleanup commits"
* tag 'random-6.11-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random:
MAINTAINERS: add random.h headers to RNG subsection
random: note that RNDGETPOOL was removed in 2.6.9-rc2
selftests/vDSO: add tests for vgetrandom
x86: vdso: Wire up getrandom() vDSO implementation
random: introduce generic vDSO getrandom() implementation
mm: add MAP_DROPPABLE for designating always lazily freeable mappings
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