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Linux 6.6-rc5

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Merge tag 'v6.6-rc5' into locking/core, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2023-10-09 18:09:23 +02:00
commit fdb8b7a1af
879 changed files with 9238 additions and 5204 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
.mailmap
View File

@ -377,6 +377,7 @@ Matthew Wilcox <willy@infradead.org> <willy@debian.org>
Matthew Wilcox <willy@infradead.org> <willy@linux.intel.com>
Matthew Wilcox <willy@infradead.org> <willy@parisc-linux.org>
Matthias Fuchs <socketcan@esd.eu> <matthias.fuchs@esd.eu>
Matthieu Baerts <matttbe@kernel.org> <matthieu.baerts@tessares.net>
Matthieu CASTET <castet.matthieu@free.fr>
Matti Vaittinen <mazziesaccount@gmail.com> <matti.vaittinen@fi.rohmeurope.com>
Matt Ranostay <matt.ranostay@konsulko.com> <matt@ranostay.consulting>

7
Documentation/admin-guide/cgroup-v1/memory.rst
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@ -92,6 +92,13 @@ Brief summary of control files.
memory.oom_control set/show oom controls.
memory.numa_stat show the number of memory usage per numa
node
memory.kmem.limit_in_bytes Deprecated knob to set and read the kernel
memory hard limit. Kernel hard limit is not
supported since 5.16. Writing any value to
do file will not have any effect same as if
nokmem kernel parameter was specified.
Kernel memory is still charged and reported
by memory.kmem.usage_in_bytes.
memory.kmem.usage_in_bytes show current kernel memory allocation
memory.kmem.failcnt show the number of kernel memory usage
hits limits

12
Documentation/arch/arm64/cpu-feature-registers.rst
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@ -175,6 +175,8 @@ infrastructure:
+------------------------------+---------+---------+
| Name | bits | visible |
+------------------------------+---------+---------+
| SME | [27-24] | y |
+------------------------------+---------+---------+
| MTE | [11-8] | y |
+------------------------------+---------+---------+
| SSBS | [7-4] | y |
@ -288,8 +290,18 @@ infrastructure:
+------------------------------+---------+---------+
| Name | bits | visible |
+------------------------------+---------+---------+
| CSSC | [55-52] | y |
+------------------------------+---------+---------+
| RPRFM | [51-48] | y |
+------------------------------+---------+---------+
| BC | [23-20] | y |
+------------------------------+---------+---------+
| MOPS | [19-16] | y |
+------------------------------+---------+---------+
| APA3 | [15-12] | y |
+------------------------------+---------+---------+
| GPA3 | [11-8] | y |
+------------------------------+---------+---------+
| RPRES | [7-4] | y |
+------------------------------+---------+---------+
| WFXT | [3-0] | y |

3
Documentation/arch/arm64/elf_hwcaps.rst
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@ -305,6 +305,9 @@ HWCAP2_SMEF16F16
HWCAP2_MOPS
Functionality implied by ID_AA64ISAR2_EL1.MOPS == 0b0001.
HWCAP2_HBC
Functionality implied by ID_AA64ISAR2_EL1.BC == 0b0001.
4. Unused AT_HWCAP bits
-----------------------

2
Documentation/arch/arm64/silicon-errata.rst
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@ -71,6 +71,8 @@ stable kernels.
+----------------+-----------------+-----------------+-----------------------------+
| ARM | Cortex-A510 | #2658417 | ARM64_ERRATUM_2658417 |
+----------------+-----------------+-----------------+-----------------------------+
| ARM | Cortex-A520 | #2966298 | ARM64_ERRATUM_2966298 |
+----------------+-----------------+-----------------+-----------------------------+
| ARM | Cortex-A53 | #826319 | ARM64_ERRATUM_826319 |
+----------------+-----------------+-----------------+-----------------------------+
| ARM | Cortex-A53 | #827319 | ARM64_ERRATUM_827319 |

4
Documentation/arch/loongarch/introduction.rst
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@ -381,9 +381,9 @@ Documentation of LoongArch ISA:
Documentation of LoongArch ELF psABI:
https://github.com/loongson/LoongArch-Documentation/releases/latest/download/LoongArch-ELF-ABI-v2.00-CN.pdf (in Chinese)
https://github.com/loongson/LoongArch-Documentation/releases/latest/download/LoongArch-ELF-ABI-v2.01-CN.pdf (in Chinese)
https://github.com/loongson/LoongArch-Documentation/releases/latest/download/LoongArch-ELF-ABI-v2.00-EN.pdf (in English)
https://github.com/loongson/LoongArch-Documentation/releases/latest/download/LoongArch-ELF-ABI-v2.01-EN.pdf (in English)
Linux kernel repository of Loongson and LoongArch:

1
Documentation/devicetree/bindings/ata/pata-common.yaml
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@ -38,6 +38,7 @@ patternProperties:
ID number 0 and the slave drive will have ID number 1. The PATA port
nodes will be named "ide-port".
type: object
additionalProperties: false
properties:
reg:

3
Documentation/devicetree/bindings/bus/fsl,imx8qxp-pixel-link-msi-bus.yaml
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@ -73,9 +73,6 @@ patternProperties:
"^.*@[0-9a-f]+$":
description: Devices attached to the bus
type: object
properties:
reg:
maxItems: 1
required:
- reg

2
Documentation/devicetree/bindings/cache/andestech,ax45mp-cache.yaml vendored
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@ -69,7 +69,7 @@ examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
cache-controller@2010000 {
cache-controller@13400000 {
compatible = "andestech,ax45mp-cache", "cache";
reg = <0x13400000 0x100000>;
interrupts = <508 IRQ_TYPE_LEVEL_HIGH>;

11
Documentation/devicetree/bindings/clock/renesas,5p35023.yaml
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@ -37,6 +37,9 @@ properties:
maxItems: 1
'#clock-cells':
description:
The index in the assigned-clocks is mapped to the output clock as below
0 - REF, 1 - SE1, 2 - SE2, 3 - SE3, 4 - DIFF1, 5 - DIFF2.
const: 1
clocks:
@ -68,7 +71,7 @@ examples:
reg = <0x68>;
#clock-cells = <1>;
clocks = <&x1_x2>;
clocks = <&x1>;
renesas,settings = [
80 00 11 19 4c 02 23 7f 83 19 08 a9 5f 25 24 bf
@ -79,8 +82,8 @@ examples:
assigned-clocks = <&versa3 0>, <&versa3 1>,
<&versa3 2>, <&versa3 3>,
<&versa3 4>, <&versa3 5>;
assigned-clock-rates = <12288000>, <25000000>,
<12000000>, <11289600>,
<11289600>, <24000000>;
assigned-clock-rates = <24000000>, <11289600>,
<11289600>, <12000000>,
<25000000>, <12288000>;
};
};

2
Documentation/devicetree/bindings/display/imx/fsl,imx6-hdmi.yaml
View File

@ -87,7 +87,7 @@ required:
- interrupts
- ports
additionalProperties: false
unevaluatedProperties: false
examples:
- |

5
Documentation/devicetree/bindings/i2c/i2c-mxs.yaml
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@ -9,6 +9,9 @@ title: Freescale MXS Inter IC (I2C) Controller
maintainers:
- Shawn Guo <shawnguo@kernel.org>
allOf:
- $ref: /schemas/i2c/i2c-controller.yaml#
properties:
compatible:
enum:
@ -37,7 +40,7 @@ required:
- dmas
- dma-names
additionalProperties: false
unevaluatedProperties: false
examples:
- |

2
Documentation/devicetree/bindings/iommu/arm,smmu.yaml
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@ -270,6 +270,7 @@ allOf:
contains:
enum:
- qcom,msm8998-smmu-v2
- qcom,sdm630-smmu-v2
then:
anyOf:
- properties:
@ -311,7 +312,6 @@ allOf:
compatible:
contains:
enum:
- qcom,sdm630-smmu-v2
- qcom,sm6375-smmu-v2
then:
anyOf:

1
Documentation/devicetree/bindings/media/i2c/sony,imx415.yaml
View File

@ -54,6 +54,7 @@ properties:
port:
$ref: /schemas/graph.yaml#/$defs/port-base
unevaluatedProperties: false
properties:
endpoint:

2
Documentation/devicetree/bindings/media/i2c/toshiba,tc358746.yaml
View File

@ -69,6 +69,7 @@ properties:
properties:
port@0:
$ref: /schemas/graph.yaml#/$defs/port-base
unevaluatedProperties: false
description: Input port
properties:
@ -89,6 +90,7 @@ properties:
port@1:
$ref: /schemas/graph.yaml#/$defs/port-base
unevaluatedProperties: false
description: Output port
properties:

1
Documentation/devicetree/bindings/media/nxp,imx7-csi.yaml
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@ -59,7 +59,6 @@ allOf:
compatible:
contains:
enum:
- fsl,imx8mq-csi
- fsl,imx8mm-csi
then:
required:

4
Documentation/devicetree/bindings/media/renesas,vin.yaml
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@ -95,7 +95,7 @@ properties:
synchronization is selected.
default: 1
field-active-even: true
field-even-active: true
bus-width: true
@ -144,7 +144,7 @@ properties:
synchronization is selected.
default: 1
field-active-even: true
field-even-active: true
bus-width: true

1
Documentation/devicetree/bindings/media/samsung,fimc.yaml
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@ -57,6 +57,7 @@ properties:
patternProperties:
"^port@[01]$":
$ref: /schemas/graph.yaml#/$defs/port-base
unevaluatedProperties: false
description:
Camera A and camera B inputs.

4
Documentation/devicetree/bindings/mfd/maxim,max77693.yaml
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@ -31,10 +31,6 @@ properties:
charger:
$ref: /schemas/power/supply/maxim,max77693.yaml
connector:
$ref: /schemas/connector/usb-connector.yaml#
unevaluatedProperties: false
led:
$ref: /schemas/leds/maxim,max77693.yaml

163
Documentation/devicetree/bindings/pci/brcm,iproc-pcie.yaml
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@ -12,7 +12,6 @@ maintainers:
allOf:
- $ref: /schemas/pci/pci-bus.yaml#
- $ref: /schemas/interrupt-controller/msi-controller.yaml#
properties:
compatible:
@ -34,13 +33,6 @@ properties:
description: >
Base address and length of the PCIe controller I/O register space
interrupt-map: true
interrupt-map-mask: true
"#interrupt-cells":
const: 1
ranges:
minItems: 1
maxItems: 2
@ -54,16 +46,8 @@ properties:
items:
- const: pcie-phy
bus-range: true
dma-coherent: true
"#address-cells": true
"#size-cells": true
device_type: true
brcm,pcie-ob:
type: boolean
description: >
@ -78,21 +62,25 @@ properties:
msi:
type: object
$ref: /schemas/interrupt-controller/msi-controller.yaml#
unevaluatedProperties: false
properties:
compatible:
items:
- const: brcm,iproc-msi
interrupts:
maxItems: 4
brcm,pcie-msi-inten:
type: boolean
description:
Needs to be present for some older iProc platforms that require the
interrupt enable registers to be set explicitly to enable MSI
msi-parent: true
msi-controller: true
brcm,pcie-msi-inten:
type: boolean
description: >
Needs to be present for some older iProc platforms that require the
interrupt enable registers to be set explicitly to enable MSI
dependencies:
brcm,pcie-ob-axi-offset: ["brcm,pcie-ob"]
brcm,pcie-msi-inten: [msi-controller]
@ -117,68 +105,69 @@ unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
bus {
#address-cells = <1>;
#size-cells = <1>;
pcie0: pcie@18012000 {
compatible = "brcm,iproc-pcie";
reg = <0x18012000 0x1000>;
#interrupt-cells = <1>;
interrupt-map-mask = <0 0 0 0>;
interrupt-map = <0 0 0 0 &gic GIC_SPI 100 IRQ_TYPE_NONE>;
linux,pci-domain = <0>;
bus-range = <0x00 0xff>;
#address-cells = <3>;
#size-cells = <2>;
device_type = "pci";
ranges = <0x81000000 0 0 0x28000000 0 0x00010000>,
<0x82000000 0 0x20000000 0x20000000 0 0x04000000>;
phys = <&phy 0 5>;
phy-names = "pcie-phy";
brcm,pcie-ob;
brcm,pcie-ob-axi-offset = <0x00000000>;
msi-parent = <&msi0>;
/* iProc event queue based MSI */
msi0: msi {
compatible = "brcm,iproc-msi";
msi-controller;
interrupt-parent = <&gic>;
interrupts = <GIC_SPI 96 IRQ_TYPE_NONE>,
<GIC_SPI 97 IRQ_TYPE_NONE>,
<GIC_SPI 98 IRQ_TYPE_NONE>,
<GIC_SPI 99 IRQ_TYPE_NONE>;
};
};
pcie1: pcie@18013000 {
compatible = "brcm,iproc-pcie";
reg = <0x18013000 0x1000>;
#interrupt-cells = <1>;
interrupt-map-mask = <0 0 0 0>;
interrupt-map = <0 0 0 0 &gic GIC_SPI 106 IRQ_TYPE_NONE>;
linux,pci-domain = <1>;
bus-range = <0x00 0xff>;
#address-cells = <3>;
#size-cells = <2>;
device_type = "pci";
ranges = <0x81000000 0 0 0x48000000 0 0x00010000>,
<0x82000000 0 0x40000000 0x40000000 0 0x04000000>;
phys = <&phy 1 6>;
phy-names = "pcie-phy";
};
gic: interrupt-controller {
interrupt-controller;
#interrupt-cells = <3>;
};
pcie@18012000 {
compatible = "brcm,iproc-pcie";
reg = <0x18012000 0x1000>;
#interrupt-cells = <1>;
interrupt-map-mask = <0 0 0 0>;
interrupt-map = <0 0 0 0 &gic GIC_SPI 100 IRQ_TYPE_NONE>;
linux,pci-domain = <0>;
bus-range = <0x00 0xff>;
#address-cells = <3>;
#size-cells = <2>;
device_type = "pci";
ranges = <0x81000000 0 0 0x28000000 0 0x00010000>,
<0x82000000 0 0x20000000 0x20000000 0 0x04000000>;
phys = <&phy 0 5>;
phy-names = "pcie-phy";
brcm,pcie-ob;
brcm,pcie-ob-axi-offset = <0x00000000>;
msi-parent = <&msi0>;
/* iProc event queue based MSI */
msi0: msi {
compatible = "brcm,iproc-msi";
msi-controller;
interrupt-parent = <&gic>;
interrupts = <GIC_SPI 96 IRQ_TYPE_NONE>,
<GIC_SPI 97 IRQ_TYPE_NONE>,
<GIC_SPI 98 IRQ_TYPE_NONE>,
<GIC_SPI 99 IRQ_TYPE_NONE>;
};
};
- |
pcie@18013000 {
compatible = "brcm,iproc-pcie";
reg = <0x18013000 0x1000>;
#interrupt-cells = <1>;
interrupt-map-mask = <0 0 0 0>;
interrupt-map = <0 0 0 0 &gic GIC_SPI 106 IRQ_TYPE_NONE>;
linux,pci-domain = <1>;
bus-range = <0x00 0xff>;
#address-cells = <3>;
#size-cells = <2>;
device_type = "pci";
ranges = <0x81000000 0 0 0x48000000 0 0x00010000>,
<0x82000000 0 0x40000000 0x40000000 0 0x04000000>;
phys = <&phy 1 6>;
phy-names = "pcie-phy";
};

1
Documentation/devicetree/bindings/riscv/cpus.yaml
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@ -91,6 +91,7 @@ properties:
interrupt-controller:
type: object
additionalProperties: false
description: Describes the CPU's local interrupt controller
properties:

43
Documentation/devicetree/bindings/soc/loongson/loongson,ls2k-pmc.yaml
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@ -11,11 +11,16 @@ maintainers:
properties:
compatible:
items:
- enum:
- loongson,ls2k0500-pmc
- loongson,ls2k1000-pmc
- const: syscon
oneOf:
- items:
- const: loongson,ls2k0500-pmc
- const: syscon
- items:
- enum:
- loongson,ls2k1000-pmc
- loongson,ls2k2000-pmc
- const: loongson,ls2k0500-pmc
- const: syscon
reg:
maxItems: 1
@ -32,6 +37,18 @@ properties:
addition, the PM need according to it to indicate that current
SoC whether support Suspend To RAM.
syscon-poweroff:
$ref: /schemas/power/reset/syscon-poweroff.yaml#
type: object
description:
Node for power off method
syscon-reboot:
$ref: /schemas/power/reset/syscon-reboot.yaml#
type: object
description:
Node for reboot method
required:
- compatible
- reg
@ -44,9 +61,23 @@ examples:
#include <dt-bindings/interrupt-controller/irq.h>
power-management@1fe27000 {
compatible = "loongson,ls2k1000-pmc", "syscon";
compatible = "loongson,ls2k1000-pmc", "loongson,ls2k0500-pmc", "syscon";
reg = <0x1fe27000 0x58>;
interrupt-parent = <&liointc1>;
interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
loongson,suspend-address = <0x0 0x1c000500>;
syscon-reboot {
compatible = "syscon-reboot";
offset = <0x30>;
mask = <0x1>;
};
syscon-poweroff {
compatible = "syscon-poweroff";
regmap = <&pmc>;
offset = <0x14>;
mask = <0x3c00>;
value = <0x3c00>;
};
};

7
Documentation/devicetree/bindings/spi/fsl-imx-cspi.yaml
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@ -22,6 +22,13 @@ properties:
- const: fsl,imx35-cspi
- const: fsl,imx51-ecspi
- const: fsl,imx53-ecspi
- items:
- enum:
- fsl,imx25-cspi
- fsl,imx50-cspi
- fsl,imx51-cspi
- fsl,imx53-cspi
- const: fsl,imx35-cspi
- items:
- const: fsl,imx8mp-ecspi
- const: fsl,imx6ul-ecspi

2
Documentation/devicetree/bindings/trivial-devices.yaml
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@ -232,7 +232,7 @@ properties:
# MEMSIC magnetometer
- memsic,mmc35240
# MEMSIC 3-axis accelerometer
- memsic,mx4005
- memsic,mxc4005
# MEMSIC 2-axis 8-bit digital accelerometer
- memsic,mxc6225
# MEMSIC 2-axis 8-bit digital accelerometer

40
Documentation/filesystems/erofs.rst
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@ -58,12 +58,14 @@ Here are the main features of EROFS:
- Support extended attributes as an option;
- Support a bloom filter that speeds up negative extended attribute lookups;
- Support POSIX.1e ACLs by using extended attributes;
- Support transparent data compression as an option:
LZ4 and MicroLZMA algorithms can be used on a per-file basis; In addition,
inplace decompression is also supported to avoid bounce compressed buffers
and page cache thrashing.
LZ4, MicroLZMA and DEFLATE algorithms can be used on a per-file basis; In
addition, inplace decompression is also supported to avoid bounce compressed
buffers and unnecessary page cache thrashing.
- Support chunk-based data deduplication and rolling-hash compressed data
deduplication;
@ -268,6 +270,38 @@ details.)
By the way, chunk-based files are all uncompressed for now.
Long extended attribute name prefixes
-------------------------------------
There are use cases where extended attributes with different values can have
only a few common prefixes (such as overlayfs xattrs). The predefined prefixes
work inefficiently in both image size and runtime performance in such cases.
The long xattr name prefixes feature is introduced to address this issue. The
overall idea is that, apart from the existing predefined prefixes, the xattr
entry could also refer to user-specified long xattr name prefixes, e.g.
"trusted.overlay.".
When referring to a long xattr name prefix, the highest bit (bit 7) of
erofs_xattr_entry.e_name_index is set, while the lower bits (bit 0-6) as a whole
represent the index of the referred long name prefix among all long name
prefixes. Therefore, only the trailing part of the name apart from the long
xattr name prefix is stored in erofs_xattr_entry.e_name, which could be empty if
the full xattr name matches exactly as its long xattr name prefix.
All long xattr prefixes are stored one by one in the packed inode as long as
the packed inode is valid, or in the meta inode otherwise. The
xattr_prefix_count (of the on-disk superblock) indicates the total number of
long xattr name prefixes, while (xattr_prefix_start * 4) indicates the start
offset of long name prefixes in the packed/meta inode. Note that, long extended
attribute name prefixes are disabled if xattr_prefix_count is 0.
Each long name prefix is stored in the format: ALIGN({__le16 len, data}, 4),
where len represents the total size of the data part. The data part is actually
represented by 'struct erofs_xattr_long_prefix', where base_index represents the
index of the predefined xattr name prefix, e.g. EROFS_XATTR_INDEX_TRUSTED for
"trusted.overlay." long name prefix, while the infix string keeps the string
after stripping the short prefix, e.g. "overlay." for the example above.
Data compression
----------------
EROFS implements fixed-sized output compression which generates fixed-sized

96
Documentation/filesystems/porting.rst
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@ -949,3 +949,99 @@ mmap_lock held. All in-tree users have been audited and do not seem to
depend on the mmap_lock being held, but out of tree users should verify
for themselves. If they do need it, they can return VM_FAULT_RETRY to
be called with the mmap_lock held.
---
**mandatory**
The order of opening block devices and matching or creating superblocks has
changed.
The old logic opened block devices first and then tried to find a
suitable superblock to reuse based on the block device pointer.
The new logic tries to find a suitable superblock first based on the device
number, and opening the block device afterwards.
Since opening block devices cannot happen under s_umount because of lock
ordering requirements s_umount is now dropped while opening block devices and
reacquired before calling fill_super().
In the old logic concurrent mounters would find the superblock on the list of
superblocks for the filesystem type. Since the first opener of the block device
would hold s_umount they would wait until the superblock became either born or
was discarded due to initialization failure.
Since the new logic drops s_umount concurrent mounters could grab s_umount and
would spin. Instead they are now made to wait using an explicit wait-wake
mechanism without having to hold s_umount.
---
**mandatory**
The holder of a block device is now the superblock.
The holder of a block device used to be the file_system_type which wasn't
particularly useful. It wasn't possible to go from block device to owning
superblock without matching on the device pointer stored in the superblock.
This mechanism would only work for a single device so the block layer couldn't
find the owning superblock of any additional devices.
In the old mechanism reusing or creating a superblock for a racing mount(2) and
umount(2) relied on the file_system_type as the holder. This was severly
underdocumented however:
(1) Any concurrent mounter that managed to grab an active reference on an
existing superblock was made to wait until the superblock either became
ready or until the superblock was removed from the list of superblocks of
the filesystem type. If the superblock is ready the caller would simple
reuse it.
(2) If the mounter came after deactivate_locked_super() but before
the superblock had been removed from the list of superblocks of the
filesystem type the mounter would wait until the superblock was shutdown,
reuse the block device and allocate a new superblock.
(3) If the mounter came after deactivate_locked_super() and after
the superblock had been removed from the list of superblocks of the
filesystem type the mounter would reuse the block device and allocate a new
superblock (the bd_holder point may still be set to the filesystem type).
Because the holder of the block device was the file_system_type any concurrent
mounter could open the block devices of any superblock of the same
file_system_type without risking seeing EBUSY because the block device was
still in use by another superblock.
Making the superblock the owner of the block device changes this as the holder
is now a unique superblock and thus block devices associated with it cannot be
reused by concurrent mounters. So a concurrent mounter in (2) could suddenly
see EBUSY when trying to open a block device whose holder was a different
superblock.
The new logic thus waits until the superblock and the devices are shutdown in
->kill_sb(). Removal of the superblock from the list of superblocks of the
filesystem type is now moved to a later point when the devices are closed:
(1) Any concurrent mounter managing to grab an active reference on an existing
superblock is made to wait until the superblock is either ready or until
the superblock and all devices are shutdown in ->kill_sb(). If the
superblock is ready the caller will simply reuse it.
(2) If the mounter comes after deactivate_locked_super() but before
the superblock has been removed from the list of superblocks of the
filesystem type the mounter is made to wait until the superblock and the
devices are shut down in ->kill_sb() and the superblock is removed from the
list of superblocks of the filesystem type. The mounter will allocate a new
superblock and grab ownership of the block device (the bd_holder pointer of
the block device will be set to the newly allocated superblock).
(3) This case is now collapsed into (2) as the superblock is left on the list
of superblocks of the filesystem type until all devices are shutdown in
->kill_sb(). In other words, if the superblock isn't on the list of
superblock of the filesystem type anymore then it has given up ownership of
all associated block devices (the bd_holder pointer is NULL).
As this is a VFS level change it has no practical consequences for filesystems
other than that all of them must use one of the provided kill_litter_super(),
kill_anon_super(), or kill_block_super() helpers.

26
Documentation/kbuild/kconfig-language.rst
View File

@ -573,6 +573,32 @@ above, leading to:
bool "Support for foo hardware"
depends on ARCH_FOO_VENDOR || COMPILE_TEST
Optional dependencies
~~~~~~~~~~~~~~~~~~~~~
Some drivers are able to optionally use a feature from another module
or build cleanly with that module disabled, but cause a link failure
when trying to use that loadable module from a built-in driver.
The most common way to express this optional dependency in Kconfig logic
uses the slightly counterintuitive::
config FOO
tristate "Support for foo hardware"
depends on BAR || !BAR
This means that there is either a dependency on BAR that disallows
the combination of FOO=y with BAR=m, or BAR is completely disabled.
For a more formalized approach if there are multiple drivers that have
the same dependency, a helper symbol can be used, like::
config FOO
tristate "Support for foo hardware"
depends on BAR_OPTIONAL
config BAR_OPTIONAL
def_tristate BAR || !BAR
Kconfig recursive dependency limitations
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

4
Documentation/networking/ax25.rst
View File

@ -7,9 +7,9 @@ AX.25
To use the amateur radio protocols within Linux you will need to get a
suitable copy of the AX.25 Utilities. More detailed information about
AX.25, NET/ROM and ROSE, associated programs and utilities can be
found on http://www.linux-ax25.org.
found on https://linux-ax25.in-berlin.de.
There is an active mailing list for discussing Linux amateur radio matters
There is a mailing list for discussing Linux amateur radio matters
called linux-hams@vger.kernel.org. To subscribe to it, send a message to
majordomo@vger.kernel.org with the words "subscribe linux-hams" in the body
of the message, the subject field is ignored. You don't need to be

4
Documentation/sound/designs/midi-2.0.rst
View File

@ -74,8 +74,8 @@ topology based on those information. When the device is older and
doesn't respond to the new UMP inquiries, the driver falls back and
builds the topology based on Group Terminal Block (GTB) information
from the USB descriptor. Some device might be screwed up by the
unexpected UMP command; in such a case, pass `midi2_probe=0` option to
snd-usb-audio driver for skipping the UMP v1.1 inquiries.
unexpected UMP command; in such a case, pass `midi2_ump_probe=0`
option to snd-usb-audio driver for skipping the UMP v1.1 inquiries.
When the MIDI 2.0 device is probed, the kernel creates a rawmidi
device for each UMP Endpoint of the device. Its device name is

4
Documentation/tools/rtla/rtla-timerlat-hist.rst
View File

@ -36,11 +36,11 @@ EXAMPLE
In the example below, **rtla timerlat hist** is set to run for *10* minutes,
in the cpus *0-4*, *skipping zero* only lines. Moreover, **rtla timerlat
hist** will change the priority of the *timerlat* threads to run under
*SCHED_DEADLINE* priority, with a *10us* runtime every *1ms* period. The
*SCHED_DEADLINE* priority, with a *100us* runtime every *1ms* period. The
*1ms* period is also passed to the *timerlat* tracer. Auto-analysis is disabled
to reduce overhead ::
[root@alien ~]# timerlat hist -d 10m -c 0-4 -P d:100us:1ms -p 1ms --no-aa
[root@alien ~]# timerlat hist -d 10m -c 0-4 -P d:100us:1ms -p 1000 --no-aa
# RTLA timerlat histogram
# Time unit is microseconds (us)
# Duration: 0 00:10:00

4
Documentation/translations/zh_CN/arch/loongarch/introduction.rst
View File

@ -344,9 +344,9 @@ LoongArch指令集架构的文档：
LoongArch的ELF psABI文档：
https://github.com/loongson/LoongArch-Documentation/releases/latest/download/LoongArch-ELF-ABI-v2.00-CN.pdf （中文版）
https://github.com/loongson/LoongArch-Documentation/releases/latest/download/LoongArch-ELF-ABI-v2.01-CN.pdf （中文版）
https://github.com/loongson/LoongArch-Documentation/releases/latest/download/LoongArch-ELF-ABI-v2.00-EN.pdf （英文版）
https://github.com/loongson/LoongArch-Documentation/releases/latest/download/LoongArch-ELF-ABI-v2.01-EN.pdf （英文版）
Loongson与LoongArch的Linux内核源码仓库：

42
MAINTAINERS
View File

@ -470,7 +470,6 @@ F: drivers/hwmon/adm1029.c
ADM8211 WIRELESS DRIVER
L: linux-wireless@vger.kernel.org
S: Orphan
W: https://wireless.wiki.kernel.org/
F: drivers/net/wireless/admtek/adm8211.*
ADP1653 FLASH CONTROLLER DRIVER
@ -1662,7 +1661,7 @@ F: arch/arm*/include/asm/perf_event.h
F: arch/arm*/kernel/hw_breakpoint.c
F: arch/arm*/kernel/perf_*
F: drivers/perf/
F: include/linux/perf/arm_pmu.h
F: include/linux/perf/arm_pmu*.h
ARM PORT
M: Russell King <linux@armlinux.org.uk>
@ -1963,12 +1962,12 @@ F: drivers/irqchip/irq-aspeed-i2c-ic.c
ARM/ASPEED MACHINE SUPPORT
M: Joel Stanley <joel@jms.id.au>
R: Andrew Jeffery <andrew@aj.id.au>
R: Andrew Jeffery <andrew@codeconstruct.com.au>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
L: linux-aspeed@lists.ozlabs.org (moderated for non-subscribers)
S: Supported
Q: https://patchwork.ozlabs.org/project/linux-aspeed/list/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/joel/aspeed.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/joel/bmc.git
F: Documentation/devicetree/bindings/arm/aspeed/
F: arch/arm/boot/dts/aspeed/
F: arch/arm/mach-aspeed/
@ -3058,7 +3057,7 @@ F: Documentation/devicetree/bindings/peci/peci-aspeed.yaml
F: drivers/peci/controller/peci-aspeed.c
ASPEED PINCTRL DRIVERS
M: Andrew Jeffery <andrew@aj.id.au>
M: Andrew Jeffery <andrew@codeconstruct.com.au>
L: linux-aspeed@lists.ozlabs.org (moderated for non-subscribers)
L: openbmc@lists.ozlabs.org (moderated for non-subscribers)
L: linux-gpio@vger.kernel.org
@ -3075,7 +3074,7 @@ F: drivers/irqchip/irq-aspeed-scu-ic.c
F: include/dt-bindings/interrupt-controller/aspeed-scu-ic.h
ASPEED SD/MMC DRIVER
M: Andrew Jeffery <andrew@aj.id.au>
M: Andrew Jeffery <andrew@codeconstruct.com.au>
L: linux-aspeed@lists.ozlabs.org (moderated for non-subscribers)
L: openbmc@lists.ozlabs.org (moderated for non-subscribers)
L: linux-mmc@vger.kernel.org
@ -3344,7 +3343,7 @@ AX.25 NETWORK LAYER
M: Ralf Baechle <ralf@linux-mips.org>
L: linux-hams@vger.kernel.org
S: Maintained
W: http://www.linux-ax25.org/
W: https://linux-ax25.in-berlin.de
F: include/net/ax25.h
F: include/uapi/linux/ax25.h
F: net/ax25/
@ -4082,7 +4081,7 @@ F: drivers/net/wireless/broadcom/brcm80211/
BROADCOM BRCMSTB GPIO DRIVER
M: Doug Berger <opendmb@gmail.com>
M: Florian Fainelli <florian.fainelli@broadcom>
M: Florian Fainelli <florian.fainelli@broadcom.com>
R: Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>
S: Supported
F: Documentation/devicetree/bindings/gpio/brcm,brcmstb-gpio.yaml
@ -5985,8 +5984,8 @@ F: include/linux/devm-helpers.h
DEVICE-MAPPER (LVM)
M: Alasdair Kergon <agk@redhat.com>
M: Mike Snitzer <snitzer@kernel.org>
M: dm-devel@redhat.com
L: dm-devel@redhat.com
M: dm-devel@lists.linux.dev
L: dm-devel@lists.linux.dev
S: Maintained
W: http://sources.redhat.com/dm
Q: http://patchwork.kernel.org/project/dm-devel/list/
@ -6645,9 +6644,9 @@ F: Documentation/devicetree/bindings/display/panel/novatek,nt36672a.yaml
F: drivers/gpu/drm/panel/panel-novatek-nt36672a.c
DRM DRIVER FOR NVIDIA GEFORCE/QUADRO GPUS
M: Ben Skeggs <bskeggs@redhat.com>
M: Karol Herbst <kherbst@redhat.com>
M: Lyude Paul <lyude@redhat.com>
M: Danilo Krummrich <dakr@redhat.com>
L: dri-devel@lists.freedesktop.org
L: nouveau@lists.freedesktop.org
S: Supported
@ -8874,7 +8873,7 @@ F: drivers/gpio/gpio-mockup.c
F: tools/testing/selftests/gpio/
GPIO REGMAP
R: Michael Walle <michael@walle.cc>
M: Michael Walle <michael@walle.cc>
S: Maintained
F: drivers/gpio/gpio-regmap.c
F: include/linux/gpio/regmap.h
@ -9531,10 +9530,8 @@ F: Documentation/devicetree/bindings/iio/pressure/honeywell,mprls0025pa.yaml
F: drivers/iio/pressure/mprls0025pa.c
HOST AP DRIVER
M: Jouni Malinen <j@w1.fi>
L: linux-wireless@vger.kernel.org
S: Obsolete
W: http://w1.fi/hostap-driver.html
F: drivers/net/wireless/intersil/hostap/
HP BIOSCFG DRIVER
@ -13616,6 +13613,7 @@ F: drivers/net/ethernet/mellanox/mlxfw/
MELLANOX HARDWARE PLATFORM SUPPORT
M: Hans de Goede <hdegoede@redhat.com>
M: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
M: Mark Gross <markgross@kernel.org>
M: Vadim Pasternak <vadimp@nvidia.com>
L: platform-driver-x86@vger.kernel.org
@ -14210,6 +14208,7 @@ F: drivers/platform/surface/surface_gpe.c
MICROSOFT SURFACE HARDWARE PLATFORM SUPPORT
M: Hans de Goede <hdegoede@redhat.com>
M: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
M: Mark Gross <markgross@kernel.org>
M: Maximilian Luz <luzmaximilian@gmail.com>
L: platform-driver-x86@vger.kernel.org
@ -14756,7 +14755,7 @@ NETROM NETWORK LAYER
M: Ralf Baechle <ralf@linux-mips.org>
L: linux-hams@vger.kernel.org
S: Maintained
W: http://www.linux-ax25.org/
W: https://linux-ax25.in-berlin.de
F: include/net/netrom.h
F: include/uapi/linux/netrom.h
F: net/netrom/
@ -14945,7 +14944,7 @@ K: macsec
K: \bmdo_
NETWORKING [MPTCP]
M: Matthieu Baerts <matthieu.baerts@tessares.net>
M: Matthieu Baerts <matttbe@kernel.org>
M: Mat Martineau <martineau@kernel.org>
L: netdev@vger.kernel.org
L: mptcp@lists.linux.dev
@ -17600,6 +17599,7 @@ M: Kalle Valo <kvalo@kernel.org>
M: Jeff Johnson <quic_jjohnson@quicinc.com>
L: ath12k@lists.infradead.org
S: Supported
W: https://wireless.wiki.kernel.org/en/users/Drivers/ath12k
T: git git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
F: drivers/net/wireless/ath/ath12k/
@ -18130,8 +18130,6 @@ REALTEK WIRELESS DRIVER (rtlwifi family)
M: Ping-Ke Shih <pkshih@realtek.com>
L: linux-wireless@vger.kernel.org
S: Maintained
W: https://wireless.wiki.kernel.org/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-testing.git
F: drivers/net/wireless/realtek/rtlwifi/
REALTEK WIRELESS DRIVER (rtw88)
@ -18607,7 +18605,7 @@ ROSE NETWORK LAYER
M: Ralf Baechle <ralf@linux-mips.org>
L: linux-hams@vger.kernel.org
S: Maintained
W: http://www.linux-ax25.org/
W: https://linux-ax25.in-berlin.de
F: include/net/rose.h
F: include/uapi/linux/rose.h
F: net/rose/
@ -18659,7 +18657,6 @@ F: drivers/media/dvb-frontends/rtl2832_sdr*
RTL8180 WIRELESS DRIVER
L: linux-wireless@vger.kernel.org
S: Orphan
W: https://wireless.wiki.kernel.org/
F: drivers/net/wireless/realtek/rtl818x/rtl8180/
RTL8187 WIRELESS DRIVER
@ -18667,14 +18664,12 @@ M: Hin-Tak Leung <hintak.leung@gmail.com>
M: Larry Finger <Larry.Finger@lwfinger.net>
L: linux-wireless@vger.kernel.org
S: Maintained
W: https://wireless.wiki.kernel.org/
F: drivers/net/wireless/realtek/rtl818x/rtl8187/
RTL8XXXU WIRELESS DRIVER (rtl8xxxu)
M: Jes Sorensen <Jes.Sorensen@gmail.com>
L: linux-wireless@vger.kernel.org
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/jes/linux.git rtl8xxxu-devel
F: drivers/net/wireless/realtek/rtl8xxxu/
RTRS TRANSPORT DRIVERS
@ -21656,7 +21651,6 @@ L: linux-wireless@vger.kernel.org
S: Orphan
W: https://wireless.wiki.kernel.org/en/users/Drivers/wl12xx
W: https://wireless.wiki.kernel.org/en/users/Drivers/wl1251
T: git git://git.kernel.org/pub/scm/linux/kernel/git/luca/wl12xx.git
F: drivers/net/wireless/ti/
TIMEKEEPING, CLOCKSOURCE CORE, NTP, ALARMTIMER
@ -23423,9 +23417,11 @@ F: drivers/platform/x86/x86-android-tablets/
X86 PLATFORM DRIVERS
M: Hans de Goede <hdegoede@redhat.com>
M: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
M: Mark Gross <markgross@kernel.org>
L: platform-driver-x86@vger.kernel.org
S: Maintained
Q: https://patchwork.kernel.org/project/platform-driver-x86/list/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git
F: drivers/platform/olpc/
F: drivers/platform/x86/

2
Makefile
View File

@ -2,7 +2,7 @@
VERSION = 6
PATCHLEVEL = 6
SUBLEVEL = 0
EXTRAVERSION = -rc2
EXTRAVERSION = -rc5
NAME = Hurr durr I'ma ninja sloth
# *DOCUMENTATION*

5
arch/arm/boot/dts/ti/omap/motorola-mapphone-common.dtsi
View File

@ -614,12 +614,12 @@ &rng_target {
/* Configure pwm clock source for timers 8 & 9 */
&timer8 {
assigned-clocks = <&abe_clkctrl OMAP4_TIMER8_CLKCTRL 24>;
assigned-clock-parents = <&sys_clkin_ck>;
assigned-clock-parents = <&sys_32k_ck>;
};
&timer9 {
assigned-clocks = <&l4_per_clkctrl OMAP4_TIMER9_CLKCTRL 24>;
assigned-clock-parents = <&sys_clkin_ck>;
assigned-clock-parents = <&sys_32k_ck>;
};
/*
@ -640,6 +640,7 @@ &uart1 {
&uart3 {
interrupts-extended = <&wakeupgen GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH
&omap4_pmx_core 0x17c>;
overrun-throttle-ms = <500>;
};
&uart4 {

3
arch/arm/boot/dts/ti/omap/omap3-cpu-thermal.dtsi
View File

@ -12,8 +12,7 @@ cpu_thermal: cpu-thermal {
polling-delay = <1000>; /* milliseconds */
coefficients = <0 20000>;
/* sensor ID */
thermal-sensors = <&bandgap 0>;
thermal-sensors = <&bandgap>;
cpu_trips: trips {
cpu_alert0: cpu_alert {

5
arch/arm/boot/dts/ti/omap/omap4-cpu-thermal.dtsi
View File

@ -12,7 +12,10 @@ cpu_thermal: cpu_thermal {
polling-delay-passive = <250>; /* milliseconds */
polling-delay = <1000>; /* milliseconds */
/* sensor ID */
/*
* See 44xx files for single sensor addressing, omap5 and dra7 need
* also sensor ID for addressing.
*/
thermal-sensors = <&bandgap 0>;
cpu_trips: trips {

1
arch/arm/boot/dts/ti/omap/omap443x.dtsi
View File

@ -69,6 +69,7 @@ abb_iva: regulator-abb-iva {
};
&cpu_thermal {
thermal-sensors = <&bandgap>;
coefficients = <0 20000>;
};

1
arch/arm/boot/dts/ti/omap/omap4460.dtsi
View File

@ -79,6 +79,7 @@ abb_iva: regulator-abb-iva {
};
&cpu_thermal {
thermal-sensors = <&bandgap>;
coefficients = <348 (-9301)>;
};

2
arch/arm/include/asm/hardware/locomo.h
View File

@ -195,7 +195,7 @@ struct locomo_driver {
#define LOCOMO_DRIVER_NAME(_ldev) ((_ldev)->dev.driver->name)
void locomo_lcd_power(struct locomo_dev *, int, unsigned int);
extern void locomolcd_power(int on);
int locomo_driver_register(struct locomo_driver *);
void locomo_driver_unregister(struct locomo_driver *);

4
arch/arm/mach-omap2/pm44xx.c
View File

@ -99,7 +99,7 @@ static int omap4_pm_suspend(void)
* possible causes.
* http://www.spinics.net/lists/arm-kernel/msg218641.html
*/
pr_warn("A possible cause could be an old bootloader - try u-boot >= v2012.07\n");
pr_debug("A possible cause could be an old bootloader - try u-boot >= v2012.07\n");
} else {
pr_info("Successfully put all powerdomains to target state\n");
}
@ -257,7 +257,7 @@ int __init omap4_pm_init(void)
* http://www.spinics.net/lists/arm-kernel/msg218641.html
*/
if (cpu_is_omap44xx())
pr_warn("OMAP4 PM: u-boot >= v2012.07 is required for full PM support\n");
pr_debug("OMAP4 PM: u-boot >= v2012.07 is required for full PM support\n");
ret = pwrdm_for_each(pwrdms_setup, NULL);
if (ret) {

2
arch/arm/mach-sa1100/include/mach/collie.h
View File

@ -16,8 +16,6 @@
#include "hardware.h" /* Gives GPIO_MAX */
extern void locomolcd_power(int on);
#define COLLIE_SCOOP_GPIO_BASE (GPIO_MAX + 1)
#define COLLIE_GPIO_CHARGE_ON (COLLIE_SCOOP_GPIO_BASE + 0)
#define COLLIE_SCP_DIAG_BOOT1 SCOOP_GPCR_PA12

4
arch/arm/mm/cache-uniphier.c
View File

@ -58,11 +58,13 @@
((op & UNIPHIER_SSCOQM_S_MASK) == UNIPHIER_SSCOQM_S_RANGE)
/**
* uniphier_cache_data - UniPhier outer cache specific data
* struct uniphier_cache_data - UniPhier outer cache specific data
*
* @ctrl_base: virtual base address of control registers
* @rev_base: virtual base address of revision registers
* @op_base: virtual base address of operation registers
* @way_ctrl_base: virtual address of the way control registers for this
* SoC revision
* @way_mask: each bit specifies if the way is present
* @nsets: number of associativity sets
* @line_size: line size in bytes

2
arch/arm/xen/enlighten.c
View File

@ -207,7 +207,7 @@ static void xen_power_off(void)
static irqreturn_t xen_arm_callback(int irq, void *arg)
{
xen_hvm_evtchn_do_upcall();
xen_evtchn_do_upcall();
return IRQ_HANDLED;
}

13
arch/arm64/Kconfig
View File

@ -1037,6 +1037,19 @@ config ARM64_ERRATUM_2645198
If unsure, say Y.
config ARM64_ERRATUM_2966298
bool "Cortex-A520: 2966298: workaround for speculatively executed unprivileged load"
default y
help
This option adds the workaround for ARM Cortex-A520 erratum 2966298.
On an affected Cortex-A520 core, a speculatively executed unprivileged
load might leak data from a privileged level via a cache side channel.
Work around this problem by executing a TLBI before returning to EL0.
If unsure, say Y.
config CAVIUM_ERRATUM_22375
bool "Cavium erratum 22375, 24313"
default y

1
arch/arm64/boot/dts/freescale/Makefile
View File

@ -66,6 +66,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mm-mx8menlo.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-nitrogen-r2.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-phg.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-phyboard-polis-rdk.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-prt8mm.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-tqma8mqml-mba8mx.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-var-som-symphony.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mm-venice-gw71xx-0x.dtb

32
arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
View File

@ -26,7 +26,7 @@ hdmi-connector {
port {
hdmi_connector_in: endpoint {
remote-endpoint = <&adv7533_out>;
remote-endpoint = <&adv7535_out>;
};
};
};
@ -72,6 +72,13 @@ reg_usdhc2_vmmc: regulator-usdhc2 {
enable-active-high;
};
reg_vddext_3v3: regulator-vddext-3v3 {
compatible = "regulator-fixed";
regulator-name = "VDDEXT_3V3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
backlight: backlight {
compatible = "pwm-backlight";
pwms = <&pwm1 0 5000000 0>;
@ -317,15 +324,16 @@ &i2c2 {
hdmi@3d {
compatible = "adi,adv7535";
reg = <0x3d>, <0x3c>, <0x3e>, <0x3f>;
reg-names = "main", "cec", "edid", "packet";
reg = <0x3d>;
interrupt-parent = <&gpio1>;
interrupts = <9 IRQ_TYPE_EDGE_FALLING>;
adi,dsi-lanes = <4>;
adi,input-depth = <8>;
adi,input-colorspace = "rgb";
adi,input-clock = "1x";
adi,input-style = <1>;
adi,input-justification = "evenly";
avdd-supply = <&buck5_reg>;
dvdd-supply = <&buck5_reg>;
pvdd-supply = <&buck5_reg>;
a2vdd-supply = <&buck5_reg>;
v3p3-supply = <&reg_vddext_3v3>;
v1p2-supply = <&buck5_reg>;
ports {
#address-cells = <1>;
@ -334,7 +342,7 @@ ports {
port@0 {
reg = <0>;
adv7533_in: endpoint {
adv7535_in: endpoint {
remote-endpoint = <&dsi_out>;
};
};
@ -342,7 +350,7 @@ adv7533_in: endpoint {
port@1 {
reg = <1>;
adv7533_out: endpoint {
adv7535_out: endpoint {
remote-endpoint = <&hdmi_connector_in>;
};
};
@ -448,7 +456,7 @@ port@1 {
reg = <1>;
dsi_out: endpoint {
remote-endpoint = <&adv7533_in>;
remote-endpoint = <&adv7535_in>;
data-lanes = <1 2 3 4>;
};
};

5
arch/arm64/boot/dts/freescale/imx8mp-beacon-kit.dts
View File

@ -381,9 +381,10 @@ &pcie_phy {
&sai3 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sai3>;
assigned-clocks = <&clk IMX8MP_CLK_SAI3>;
assigned-clocks = <&clk IMX8MP_CLK_SAI3>,
<&clk IMX8MP_AUDIO_PLL2> ;
assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL2_OUT>;
assigned-clock-rates = <12288000>;
assigned-clock-rates = <12288000>, <361267200>;
fsl,sai-mclk-direction-output;
status = "okay";
};

6
arch/arm64/boot/dts/freescale/imx8mp.dtsi
View File

@ -790,6 +790,12 @@ pgc_audio: power-domain@5 {
reg = <IMX8MP_POWER_DOMAIN_AUDIOMIX>;
clocks = <&clk IMX8MP_CLK_AUDIO_ROOT>,
<&clk IMX8MP_CLK_AUDIO_AXI>;
assigned-clocks = <&clk IMX8MP_CLK_AUDIO_AHB>,
<&clk IMX8MP_CLK_AUDIO_AXI_SRC>;
assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_800M>,
<&clk IMX8MP_SYS_PLL1_800M>;
assigned-clock-rates = <400000000>,
<600000000>;
};
pgc_gpu2d: power-domain@6 {

2
arch/arm64/boot/dts/freescale/imx93-tqma9352.dtsi
View File

@ -81,7 +81,7 @@ flash0: flash@0 {
&gpio1 {
pmic-irq-hog {
gpio-hog;
gpios = <2 GPIO_ACTIVE_LOW>;
gpios = <3 GPIO_ACTIVE_LOW>;
input;
line-name = "PMIC_IRQ#";
};

10
arch/arm64/boot/dts/mediatek/mt8195.dtsi
View File

@ -2957,7 +2957,7 @@ merge1: vpp-merge@1c10c000 {
clock-names = "merge","merge_async";
power-domains = <&spm MT8195_POWER_DOMAIN_VDOSYS1>;
mediatek,gce-client-reg = <&gce0 SUBSYS_1c10XXXX 0xc000 0x1000>;
mediatek,merge-mute = <1>;
mediatek,merge-mute;
resets = <&vdosys1 MT8195_VDOSYS1_SW0_RST_B_MERGE0_DL_ASYNC>;
};
@ -2970,7 +2970,7 @@ merge2: vpp-merge@1c10d000 {
clock-names = "merge","merge_async";
power-domains = <&spm MT8195_POWER_DOMAIN_VDOSYS1>;
mediatek,gce-client-reg = <&gce0 SUBSYS_1c10XXXX 0xd000 0x1000>;
mediatek,merge-mute = <1>;
mediatek,merge-mute;
resets = <&vdosys1 MT8195_VDOSYS1_SW0_RST_B_MERGE1_DL_ASYNC>;
};
@ -2983,7 +2983,7 @@ merge3: vpp-merge@1c10e000 {
clock-names = "merge","merge_async";
power-domains = <&spm MT8195_POWER_DOMAIN_VDOSYS1>;
mediatek,gce-client-reg = <&gce0 SUBSYS_1c10XXXX 0xe000 0x1000>;
mediatek,merge-mute = <1>;
mediatek,merge-mute;
resets = <&vdosys1 MT8195_VDOSYS1_SW0_RST_B_MERGE2_DL_ASYNC>;
};
@ -2996,7 +2996,7 @@ merge4: vpp-merge@1c10f000 {
clock-names = "merge","merge_async";
power-domains = <&spm MT8195_POWER_DOMAIN_VDOSYS1>;
mediatek,gce-client-reg = <&gce0 SUBSYS_1c10XXXX 0xf000 0x1000>;
mediatek,merge-mute = <1>;
mediatek,merge-mute;
resets = <&vdosys1 MT8195_VDOSYS1_SW0_RST_B_MERGE3_DL_ASYNC>;
};
@ -3009,7 +3009,7 @@ merge5: vpp-merge@1c110000 {
clock-names = "merge","merge_async";
power-domains = <&spm MT8195_POWER_DOMAIN_VDOSYS1>;
mediatek,gce-client-reg = <&gce0 SUBSYS_1c11XXXX 0x0000 0x1000>;
mediatek,merge-fifo-en = <1>;
mediatek,merge-fifo-en;
resets = <&vdosys1 MT8195_VDOSYS1_SW0_RST_B_MERGE4_DL_ASYNC>;
};

2
arch/arm64/configs/defconfig
View File

@ -636,6 +636,7 @@ CONFIG_POWER_RESET_MSM=y
CONFIG_POWER_RESET_QCOM_PON=m
CONFIG_POWER_RESET_XGENE=y
CONFIG_POWER_RESET_SYSCON=y
CONFIG_POWER_RESET_SYSCON_POWEROFF=y
CONFIG_SYSCON_REBOOT_MODE=y
CONFIG_NVMEM_REBOOT_MODE=m
CONFIG_BATTERY_SBS=m
@ -1175,7 +1176,6 @@ CONFIG_COMMON_CLK_S2MPS11=y
CONFIG_COMMON_CLK_PWM=y
CONFIG_COMMON_CLK_RS9_PCIE=y
CONFIG_COMMON_CLK_VC5=y
CONFIG_COMMON_CLK_NPCM8XX=y
CONFIG_COMMON_CLK_BD718XX=m
CONFIG_CLK_RASPBERRYPI=m
CONFIG_CLK_IMX8MM=y

19
arch/arm64/include/asm/acpi.h
View File

@ -9,6 +9,7 @@
#ifndef _ASM_ACPI_H
#define _ASM_ACPI_H
#include <linux/cpuidle.h>
#include <linux/efi.h>
#include <linux/memblock.h>
#include <linux/psci.h>
@ -44,6 +45,24 @@
#define ACPI_MADT_GICC_TRBE (offsetof(struct acpi_madt_generic_interrupt, \
trbe_interrupt) + sizeof(u16))
/*
* Arm® Functional Fixed Hardware Specification Version 1.2.
* Table 2: Arm Architecture context loss flags
*/
#define CPUIDLE_CORE_CTXT BIT(0) /* Core context Lost */
static inline unsigned int arch_get_idle_state_flags(u32 arch_flags)
{
if (arch_flags & CPUIDLE_CORE_CTXT)
return CPUIDLE_FLAG_TIMER_STOP;
return 0;
}
#define arch_get_idle_state_flags arch_get_idle_state_flags
#define CPUIDLE_TRACE_CTXT BIT(1) /* Trace context loss */
#define CPUIDLE_GICR_CTXT BIT(2) /* GICR */
#define CPUIDLE_GICD_CTXT BIT(3) /* GICD */
/* Basic configuration for ACPI */
#ifdef CONFIG_ACPI

2
arch/arm64/include/asm/cpufeature.h
View File

@ -663,7 +663,7 @@ static inline bool supports_clearbhb(int scope)
isar2 = read_sanitised_ftr_reg(SYS_ID_AA64ISAR2_EL1);
return cpuid_feature_extract_unsigned_field(isar2,
ID_AA64ISAR2_EL1_BC_SHIFT);
ID_AA64ISAR2_EL1_CLRBHB_SHIFT);
}
const struct cpumask *system_32bit_el0_cpumask(void);

2
arch/arm64/include/asm/cputype.h
View File

@ -79,6 +79,7 @@
#define ARM_CPU_PART_CORTEX_A78AE 0xD42
#define ARM_CPU_PART_CORTEX_X1 0xD44
#define ARM_CPU_PART_CORTEX_A510 0xD46
#define ARM_CPU_PART_CORTEX_A520 0xD80
#define ARM_CPU_PART_CORTEX_A710 0xD47
#define ARM_CPU_PART_CORTEX_A715 0xD4D
#define ARM_CPU_PART_CORTEX_X2 0xD48
@ -148,6 +149,7 @@
#define MIDR_CORTEX_A78AE MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A78AE)
#define MIDR_CORTEX_X1 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_X1)
#define MIDR_CORTEX_A510 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A510)
#define MIDR_CORTEX_A520 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A520)
#define MIDR_CORTEX_A710 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A710)
#define MIDR_CORTEX_A715 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A715)
#define MIDR_CORTEX_X2 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_X2)

2
arch/arm64/include/asm/hugetlb.h
View File

@ -28,7 +28,7 @@ pte_t arch_make_huge_pte(pte_t entry, unsigned int shift, vm_flags_t flags);
#define arch_make_huge_pte arch_make_huge_pte
#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte);
pte_t *ptep, pte_t pte, unsigned long sz);
#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
unsigned long addr, pte_t *ptep,

2
arch/arm64/include/asm/kvm_hyp.h
View File

@ -118,7 +118,7 @@ void deactivate_traps_vhe_put(struct kvm_vcpu *vcpu);
u64 __guest_enter(struct kvm_vcpu *vcpu);
bool kvm_host_psci_handler(struct kvm_cpu_context *host_ctxt);
bool kvm_host_psci_handler(struct kvm_cpu_context *host_ctxt, u32 func_id);
#ifdef __KVM_NVHE_HYPERVISOR__
void __noreturn __hyp_do_panic(struct kvm_cpu_context *host_ctxt, u64 spsr,

8
arch/arm64/kernel/cpu_errata.c
View File

@ -730,6 +730,14 @@ const struct arm64_cpu_capabilities arm64_errata[] = {
.cpu_enable = cpu_clear_bf16_from_user_emulation,
},
#endif
#ifdef CONFIG_ARM64_ERRATUM_2966298
{
.desc = "ARM erratum 2966298",
.capability = ARM64_WORKAROUND_2966298,
/* Cortex-A520 r0p0 - r0p1 */
ERRATA_MIDR_REV_RANGE(MIDR_CORTEX_A520, 0, 0, 1),
},
#endif
#ifdef CONFIG_AMPERE_ERRATUM_AC03_CPU_38
{
.desc = "AmpereOne erratum AC03_CPU_38",

3
arch/arm64/kernel/cpufeature.c
View File

@ -222,7 +222,8 @@ static const struct arm64_ftr_bits ftr_id_aa64isar1[] = {
static const struct arm64_ftr_bits ftr_id_aa64isar2[] = {
ARM64_FTR_BITS(FTR_VISIBLE, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64ISAR2_EL1_CSSC_SHIFT, 4, 0),
ARM64_FTR_BITS(FTR_VISIBLE, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64ISAR2_EL1_RPRFM_SHIFT, 4, 0),
ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_HIGHER_SAFE, ID_AA64ISAR2_EL1_BC_SHIFT, 4, 0),
ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR2_EL1_CLRBHB_SHIFT, 4, 0),
ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR2_EL1_BC_SHIFT, 4, 0),
ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64ISAR2_EL1_MOPS_SHIFT, 4, 0),
ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_PTR_AUTH),
FTR_STRICT, FTR_EXACT, ID_AA64ISAR2_EL1_APA3_SHIFT, 4, 0),

4
arch/arm64/kernel/entry.S
View File

@ -428,6 +428,10 @@ alternative_else_nop_endif
ldp x28, x29, [sp, #16 * 14]
.if \el == 0
alternative_if ARM64_WORKAROUND_2966298
tlbi vale1, xzr
dsb nsh
alternative_else_nop_endif
alternative_if_not ARM64_UNMAP_KERNEL_AT_EL0
ldr lr, [sp, #S_LR]
add sp, sp, #PT_REGS_SIZE // restore sp

2
arch/arm64/kvm/hyp/include/nvhe/ffa.h
View File

@ -12,6 +12,6 @@
#define FFA_MAX_FUNC_NUM 0x7F
int hyp_ffa_init(void *pages);
bool kvm_host_ffa_handler(struct kvm_cpu_context *host_ctxt);
bool kvm_host_ffa_handler(struct kvm_cpu_context *host_ctxt, u32 func_id);
#endif /* __KVM_HYP_FFA_H */

3
arch/arm64/kvm/hyp/nvhe/ffa.c
View File

@ -634,9 +634,8 @@ static bool do_ffa_features(struct arm_smccc_res *res,
return true;
}
bool kvm_host_ffa_handler(struct kvm_cpu_context *host_ctxt)
bool kvm_host_ffa_handler(struct kvm_cpu_context *host_ctxt, u32 func_id)
{
DECLARE_REG(u64, func_id, host_ctxt, 0);
struct arm_smccc_res res;
/*

1
arch/arm64/kvm/hyp/nvhe/hyp-init.S
View File

@ -57,6 +57,7 @@ __do_hyp_init:
cmp x0, #HVC_STUB_HCALL_NR
b.lo __kvm_handle_stub_hvc
bic x0, x0, #ARM_SMCCC_CALL_HINTS
mov x3, #KVM_HOST_SMCCC_FUNC(__kvm_hyp_init)
cmp x0, x3
b.eq 1f

8
arch/arm64/kvm/hyp/nvhe/hyp-main.c
View File

@ -368,6 +368,7 @@ static void handle_host_hcall(struct kvm_cpu_context *host_ctxt)
if (static_branch_unlikely(&kvm_protected_mode_initialized))
hcall_min = __KVM_HOST_SMCCC_FUNC___pkvm_prot_finalize;
id &= ~ARM_SMCCC_CALL_HINTS;
id -= KVM_HOST_SMCCC_ID(0);
if (unlikely(id < hcall_min || id >= ARRAY_SIZE(host_hcall)))
@ -392,11 +393,14 @@ static void default_host_smc_handler(struct kvm_cpu_context *host_ctxt)
static void handle_host_smc(struct kvm_cpu_context *host_ctxt)
{
DECLARE_REG(u64, func_id, host_ctxt, 0);
bool handled;
handled = kvm_host_psci_handler(host_ctxt);
func_id &= ~ARM_SMCCC_CALL_HINTS;
handled = kvm_host_psci_handler(host_ctxt, func_id);
if (!handled)
handled = kvm_host_ffa_handler(host_ctxt);
handled = kvm_host_ffa_handler(host_ctxt, func_id);
if (!handled)
default_host_smc_handler(host_ctxt);

3
arch/arm64/kvm/hyp/nvhe/psci-relay.c
View File

@ -273,9 +273,8 @@ static unsigned long psci_1_0_handler(u64 func_id, struct kvm_cpu_context *host_
}
}
bool kvm_host_psci_handler(struct kvm_cpu_context *host_ctxt)
bool kvm_host_psci_handler(struct kvm_cpu_context *host_ctxt, u32 func_id)
{
DECLARE_REG(u64, func_id, host_ctxt, 0);
unsigned long ret;
switch (kvm_host_psci_config.version) {

3
arch/arm64/kvm/mmu.c
View File

@ -652,6 +652,9 @@ int hyp_alloc_private_va_range(size_t size, unsigned long *haddr)
mutex_unlock(&kvm_hyp_pgd_mutex);
if (!ret)
*haddr = base;
return ret;
}

23
arch/arm64/mm/hugetlbpage.c
View File

@ -241,15 +241,8 @@ static void clear_flush(struct mm_struct *mm,
flush_tlb_range(&vma, saddr, addr);
}
static inline struct folio *hugetlb_swap_entry_to_folio(swp_entry_t entry)
{
VM_BUG_ON(!is_migration_entry(entry) && !is_hwpoison_entry(entry));
return page_folio(pfn_to_page(swp_offset_pfn(entry)));
}
void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte)
pte_t *ptep, pte_t pte, unsigned long sz)
{
size_t pgsize;
int i;
@ -257,13 +250,10 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
unsigned long pfn, dpfn;
pgprot_t hugeprot;
ncontig = num_contig_ptes(sz, &pgsize);
if (!pte_present(pte)) {
struct folio *folio;
folio = hugetlb_swap_entry_to_folio(pte_to_swp_entry(pte));
ncontig = num_contig_ptes(folio_size(folio), &pgsize);
for (i = 0; i < ncontig; i++, ptep++)
for (i = 0; i < ncontig; i++, ptep++, addr += pgsize)
set_pte_at(mm, addr, ptep, pte);
return;
}
@ -273,7 +263,6 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
return;
}
ncontig = find_num_contig(mm, addr, ptep, &pgsize);
pfn = pte_pfn(pte);
dpfn = pgsize >> PAGE_SHIFT;
hugeprot = pte_pgprot(pte);
@ -571,5 +560,7 @@ pte_t huge_ptep_modify_prot_start(struct vm_area_struct *vma, unsigned long addr
void huge_ptep_modify_prot_commit(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep,
pte_t old_pte, pte_t pte)
{
set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
unsigned long psize = huge_page_size(hstate_vma(vma));
set_huge_pte_at(vma->vm_mm, addr, ptep, pte, psize);
}

1
arch/arm64/tools/cpucaps
View File

@ -84,6 +84,7 @@ WORKAROUND_2077057
WORKAROUND_2457168
WORKAROUND_2645198
WORKAROUND_2658417
WORKAROUND_2966298
WORKAROUND_AMPERE_AC03_CPU_38
WORKAROUND_TRBE_OVERWRITE_FILL_MODE
WORKAROUND_TSB_FLUSH_FAILURE

6
arch/arm64/tools/sysreg
View File

@ -1347,7 +1347,11 @@ UnsignedEnum 51:48 RPRFM
0b0000 NI
0b0001 IMP
EndEnum
Res0 47:28
Res0 47:32
UnsignedEnum 31:28 CLRBHB
0b0000 NI
0b0001 IMP
EndEnum
UnsignedEnum 27:24 PAC_frac
0b0000 NI
0b0001 IMP

4
arch/ia64/kernel/acpi.c
View File

@ -907,3 +907,7 @@ EXPORT_SYMBOL(acpi_unregister_ioapic);
* TBD when IA64 starts to support suspend...
*/
int acpi_suspend_lowlevel(void) { return 0; }
void acpi_proc_quirk_mwait_check(void)
{
}

14
arch/loongarch/include/asm/addrspace.h
View File

@ -19,7 +19,7 @@
*/
#ifndef __ASSEMBLY__
#ifndef PHYS_OFFSET
#define PHYS_OFFSET _AC(0, UL)
#define PHYS_OFFSET _UL(0)
#endif
extern unsigned long vm_map_base;
#endif /* __ASSEMBLY__ */
@ -43,7 +43,7 @@ extern unsigned long vm_map_base;
* Memory above this physical address will be considered highmem.
*/
#ifndef HIGHMEM_START
#define HIGHMEM_START (_AC(1, UL) << _AC(DMW_PABITS, UL))
#define HIGHMEM_START (_UL(1) << _UL(DMW_PABITS))
#endif
#define TO_PHYS(x) ( ((x) & TO_PHYS_MASK))
@ -65,16 +65,16 @@ extern unsigned long vm_map_base;
#define _ATYPE_
#define _ATYPE32_
#define _ATYPE64_
#define _CONST64_(x) x
#else
#define _ATYPE_ __PTRDIFF_TYPE__
#define _ATYPE32_ int
#define _ATYPE64_ __s64
#ifdef CONFIG_64BIT
#define _CONST64_(x) x ## UL
#else
#define _CONST64_(x) x ## ULL
#endif
#ifdef CONFIG_64BIT
#define _CONST64_(x) _UL(x)
#else
#define _CONST64_(x) _ULL(x)
#endif
/*

9
arch/loongarch/include/asm/elf.h
View File

@ -111,6 +111,15 @@
#define R_LARCH_TLS_GD_HI20 98
#define R_LARCH_32_PCREL 99
#define R_LARCH_RELAX 100
#define R_LARCH_DELETE 101
#define R_LARCH_ALIGN 102
#define R_LARCH_PCREL20_S2 103
#define R_LARCH_CFA 104
#define R_LARCH_ADD6 105
#define R_LARCH_SUB6 106
#define R_LARCH_ADD_ULEB128 107
#define R_LARCH_SUB_ULEB128 108
#define R_LARCH_64_PCREL 109
#ifndef ELF_ARCH

45
arch/loongarch/include/asm/exception.h Normal file
View File

@ -0,0 +1,45 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __ASM_EXCEPTION_H
#define __ASM_EXCEPTION_H
#include <asm/ptrace.h>
#include <linux/kprobes.h>
void show_registers(struct pt_regs *regs);
asmlinkage void cache_parity_error(void);
asmlinkage void noinstr do_ade(struct pt_regs *regs);
asmlinkage void noinstr do_ale(struct pt_regs *regs);
asmlinkage void noinstr do_bce(struct pt_regs *regs);
asmlinkage void noinstr do_bp(struct pt_regs *regs);
asmlinkage void noinstr do_ri(struct pt_regs *regs);
asmlinkage void noinstr do_fpu(struct pt_regs *regs);
asmlinkage void noinstr do_fpe(struct pt_regs *regs, unsigned long fcsr);
asmlinkage void noinstr do_lsx(struct pt_regs *regs);
asmlinkage void noinstr do_lasx(struct pt_regs *regs);
asmlinkage void noinstr do_lbt(struct pt_regs *regs);
asmlinkage void noinstr do_watch(struct pt_regs *regs);
asmlinkage void noinstr do_syscall(struct pt_regs *regs);
asmlinkage void noinstr do_reserved(struct pt_regs *regs);
asmlinkage void noinstr do_vint(struct pt_regs *regs, unsigned long sp);
asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,
unsigned long write, unsigned long address);
asmlinkage void handle_ade(void);
asmlinkage void handle_ale(void);
asmlinkage void handle_bce(void);
asmlinkage void handle_sys(void);
asmlinkage void handle_bp(void);
asmlinkage void handle_ri(void);
asmlinkage void handle_fpu(void);
asmlinkage void handle_fpe(void);
asmlinkage void handle_lsx(void);
asmlinkage void handle_lasx(void);
asmlinkage void handle_lbt(void);
asmlinkage void handle_watch(void);
asmlinkage void handle_reserved(void);
asmlinkage void handle_vint(void);
asmlinkage void noinstr handle_loongarch_irq(struct pt_regs *regs);
#endif /* __ASM_EXCEPTION_H */

59
arch/loongarch/include/asm/kasan.h
View File

@ -10,8 +10,6 @@
#include <asm/io.h>
#include <asm/pgtable.h>
#define __HAVE_ARCH_SHADOW_MAP
#define KASAN_SHADOW_SCALE_SHIFT 3
#define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL)
@ -62,61 +60,22 @@
extern bool kasan_early_stage;
extern unsigned char kasan_early_shadow_page[PAGE_SIZE];
#define kasan_mem_to_shadow kasan_mem_to_shadow
void *kasan_mem_to_shadow(const void *addr);
#define kasan_shadow_to_mem kasan_shadow_to_mem
const void *kasan_shadow_to_mem(const void *shadow_addr);
#define kasan_arch_is_ready kasan_arch_is_ready
static __always_inline bool kasan_arch_is_ready(void)
{
return !kasan_early_stage;
}
static inline void *kasan_mem_to_shadow(const void *addr)
#define addr_has_metadata addr_has_metadata
static __always_inline bool addr_has_metadata(const void *addr)
{
if (!kasan_arch_is_ready()) {
return (void *)(kasan_early_shadow_page);
} else {
unsigned long maddr = (unsigned long)addr;
unsigned long xrange = (maddr >> XRANGE_SHIFT) & 0xffff;
unsigned long offset = 0;
maddr &= XRANGE_SHADOW_MASK;
switch (xrange) {
case XKPRANGE_CC_SEG:
offset = XKPRANGE_CC_SHADOW_OFFSET;
break;
case XKPRANGE_UC_SEG:
offset = XKPRANGE_UC_SHADOW_OFFSET;
break;
case XKVRANGE_VC_SEG:
offset = XKVRANGE_VC_SHADOW_OFFSET;
break;
default:
WARN_ON(1);
return NULL;
}
return (void *)((maddr >> KASAN_SHADOW_SCALE_SHIFT) + offset);
}
}
static inline const void *kasan_shadow_to_mem(const void *shadow_addr)
{
unsigned long addr = (unsigned long)shadow_addr;
if (unlikely(addr > KASAN_SHADOW_END) ||
unlikely(addr < KASAN_SHADOW_START)) {
WARN_ON(1);
return NULL;
}
if (addr >= XKVRANGE_VC_SHADOW_OFFSET)
return (void *)(((addr - XKVRANGE_VC_SHADOW_OFFSET) << KASAN_SHADOW_SCALE_SHIFT) + XKVRANGE_VC_START);
else if (addr >= XKPRANGE_UC_SHADOW_OFFSET)
return (void *)(((addr - XKPRANGE_UC_SHADOW_OFFSET) << KASAN_SHADOW_SCALE_SHIFT) + XKPRANGE_UC_START);
else if (addr >= XKPRANGE_CC_SHADOW_OFFSET)
return (void *)(((addr - XKPRANGE_CC_SHADOW_OFFSET) << KASAN_SHADOW_SCALE_SHIFT) + XKPRANGE_CC_START);
else {
WARN_ON(1);
return NULL;
}
return (kasan_mem_to_shadow((void *)addr) != NULL);
}
void kasan_init(void);

1
arch/loongarch/include/asm/smp.h
View File

@ -70,6 +70,7 @@ struct secondary_data {
extern struct secondary_data cpuboot_data;
extern asmlinkage void smpboot_entry(void);
extern asmlinkage void start_secondary(void);
extern void calculate_cpu_foreign_map(void);

4
arch/loongarch/kernel/Makefile
View File

@ -19,6 +19,10 @@ obj-$(CONFIG_CPU_HAS_LBT) += lbt.o
obj-$(CONFIG_ARCH_STRICT_ALIGN) += unaligned.o
CFLAGS_module.o += $(call cc-option,-Wno-override-init,)
CFLAGS_syscall.o += $(call cc-option,-Wno-override-init,)
CFLAGS_perf_event.o += $(call cc-option,-Wno-override-init,)
ifdef CONFIG_FUNCTION_TRACER
ifndef CONFIG_DYNAMIC_FTRACE
obj-y += mcount.o ftrace.o

1
arch/loongarch/kernel/acpi.c
View File

@ -281,7 +281,6 @@ acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa)
pr_info("SRAT: PXM %u -> CPU 0x%02x -> Node %u\n", pxm, pa->apic_id, node);
}
void __init acpi_numa_arch_fixup(void) {}
#endif
void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size)

4
arch/loongarch/kernel/mem.c
View File

@ -50,7 +50,6 @@ void __init memblock_init(void)
}
memblock_set_current_limit(PFN_PHYS(max_low_pfn));
memblock_set_node(0, PHYS_ADDR_MAX, &memblock.memory, 0);
/* Reserve the first 2MB */
memblock_reserve(PHYS_OFFSET, 0x200000);
@ -58,4 +57,7 @@ void __init memblock_init(void)
/* Reserve the kernel text/data/bss */
memblock_reserve(__pa_symbol(&_text),
__pa_symbol(&_end) - __pa_symbol(&_text));
memblock_set_node(0, PHYS_ADDR_MAX, &memblock.memory, 0);
memblock_set_node(0, PHYS_ADDR_MAX, &memblock.reserved, 0);
}

1
arch/loongarch/kernel/module-sections.c
View File

@ -6,6 +6,7 @@
#include <linux/elf.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleloader.h>
#include <linux/ftrace.h>
Elf_Addr module_emit_got_entry(struct module *mod, Elf_Shdr *sechdrs, Elf_Addr val)

22
arch/loongarch/kernel/module.c
View File

@ -367,6 +367,24 @@ static int apply_r_larch_got_pc(struct module *mod,
return apply_r_larch_pcala(mod, location, got, rela_stack, rela_stack_top, type);
}
static int apply_r_larch_32_pcrel(struct module *mod, u32 *location, Elf_Addr v,
s64 *rela_stack, size_t *rela_stack_top, unsigned int type)
{
ptrdiff_t offset = (void *)v - (void *)location;
*(u32 *)location = offset;
return 0;
}
static int apply_r_larch_64_pcrel(struct module *mod, u32 *location, Elf_Addr v,
s64 *rela_stack, size_t *rela_stack_top, unsigned int type)
{
ptrdiff_t offset = (void *)v - (void *)location;
*(u64 *)location = offset;
return 0;
}
/*
* reloc_handlers_rela() - Apply a particular relocation to a module
* @mod: the module to apply the reloc to
@ -382,7 +400,7 @@ typedef int (*reloc_rela_handler)(struct module *mod, u32 *location, Elf_Addr v,
/* The handlers for known reloc types */
static reloc_rela_handler reloc_rela_handlers[] = {
[R_LARCH_NONE ... R_LARCH_RELAX] = apply_r_larch_error,
[R_LARCH_NONE ... R_LARCH_64_PCREL] = apply_r_larch_error,
[R_LARCH_NONE] = apply_r_larch_none,
[R_LARCH_32] = apply_r_larch_32,
@ -396,6 +414,8 @@ static reloc_rela_handler reloc_rela_handlers[] = {
[R_LARCH_SOP_POP_32_S_10_5 ... R_LARCH_SOP_POP_32_U] = apply_r_larch_sop_imm_field,
[R_LARCH_ADD32 ... R_LARCH_SUB64] = apply_r_larch_add_sub,
[R_LARCH_PCALA_HI20...R_LARCH_PCALA64_HI12] = apply_r_larch_pcala,
[R_LARCH_32_PCREL] = apply_r_larch_32_pcrel,
[R_LARCH_64_PCREL] = apply_r_larch_64_pcrel,
};
int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,

2
arch/loongarch/kernel/numa.c
View File

@ -436,7 +436,7 @@ void __init paging_init(void)
void __init mem_init(void)
{
high_memory = (void *) __va(get_num_physpages() << PAGE_SHIFT);
high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);
memblock_free_all();
}

1
arch/loongarch/kernel/process.c
View File

@ -37,6 +37,7 @@
#include <asm/bootinfo.h>
#include <asm/cpu.h>
#include <asm/elf.h>
#include <asm/exec.h>
#include <asm/fpu.h>
#include <asm/lbt.h>
#include <asm/io.h>

1
arch/loongarch/kernel/relocate_kernel.S
View File

@ -72,7 +72,6 @@ copy_word:
LONG_ADDI s5, s5, -1
beqz s5, process_entry
b copy_word
b process_entry
done:
ibar 0

7
arch/loongarch/kernel/signal.c
View File

@ -13,6 +13,7 @@
#include <linux/audit.h>
#include <linux/cache.h>
#include <linux/context_tracking.h>
#include <linux/entry-common.h>
#include <linux/irqflags.h>
#include <linux/sched.h>
#include <linux/mm.h>
@ -891,8 +892,8 @@ static unsigned long setup_extcontext(struct extctx_layout *extctx, unsigned lon
return new_sp;
}
void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs,
struct extctx_layout *extctx)
static void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs,
struct extctx_layout *extctx)
{
unsigned long sp;
@ -922,7 +923,7 @@ void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs,
* Atomically swap in the new signal mask, and wait for a signal.
*/
asmlinkage long sys_rt_sigreturn(void)
SYSCALL_DEFINE0(rt_sigreturn)
{
int sig;
sigset_t set;

3
arch/loongarch/kernel/smp.c
View File

@ -13,6 +13,7 @@
#include <linux/cpumask.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/profile.h>
#include <linux/seq_file.h>
#include <linux/smp.h>
#include <linux/threads.h>
@ -556,10 +557,12 @@ void smp_send_stop(void)
smp_call_function(stop_this_cpu, NULL, 0);
}
#ifdef CONFIG_PROFILING
int setup_profiling_timer(unsigned int multiplier)
{
return 0;
}
#endif
static void flush_tlb_all_ipi(void *info)
{

1
arch/loongarch/kernel/syscall.c
View File

@ -13,6 +13,7 @@
#include <linux/unistd.h>
#include <asm/asm.h>
#include <asm/exception.h>
#include <asm/signal.h>
#include <asm/switch_to.h>
#include <asm-generic/syscalls.h>

2
arch/loongarch/kernel/time.c
View File

@ -29,7 +29,7 @@ static void constant_event_handler(struct clock_event_device *dev)
{
}
irqreturn_t constant_timer_interrupt(int irq, void *data)
static irqreturn_t constant_timer_interrupt(int irq, void *data)
{
int cpu = smp_processor_id();
struct clock_event_device *cd;

3
arch/loongarch/kernel/topology.c
View File

@ -1,4 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/acpi.h>
#include <linux/cpu.h>
#include <linux/cpumask.h>
#include <linux/init.h>
@ -7,6 +8,8 @@
#include <linux/percpu.h>
#include <asm/bootinfo.h>
#include <acpi/processor.h>
static DEFINE_PER_CPU(struct cpu, cpu_devices);
#ifdef CONFIG_HOTPLUG_CPU

25
arch/loongarch/kernel/traps.c
View File

@ -25,7 +25,6 @@
#include <linux/ptrace.h>
#include <linux/kgdb.h>
#include <linux/kdebug.h>
#include <linux/kprobes.h>
#include <linux/notifier.h>
#include <linux/irq.h>
#include <linux/perf_event.h>
@ -35,6 +34,7 @@
#include <asm/branch.h>
#include <asm/break.h>
#include <asm/cpu.h>
#include <asm/exception.h>
#include <asm/fpu.h>
#include <asm/lbt.h>
#include <asm/inst.h>
@ -53,21 +53,6 @@
#include "access-helper.h"
extern asmlinkage void handle_ade(void);
extern asmlinkage void handle_ale(void);
extern asmlinkage void handle_bce(void);
extern asmlinkage void handle_sys(void);
extern asmlinkage void handle_bp(void);
extern asmlinkage void handle_ri(void);
extern asmlinkage void handle_fpu(void);
extern asmlinkage void handle_fpe(void);
extern asmlinkage void handle_lbt(void);
extern asmlinkage void handle_lsx(void);
extern asmlinkage void handle_lasx(void);
extern asmlinkage void handle_reserved(void);
extern asmlinkage void handle_watch(void);
extern asmlinkage void handle_vint(void);
static void show_backtrace(struct task_struct *task, const struct pt_regs *regs,
const char *loglvl, bool user)
{
@ -439,8 +424,8 @@ static inline void setup_vint_size(unsigned int size)
* happen together with Overflow or Underflow, and `ptrace' can set
* any bits.
*/
void force_fcsr_sig(unsigned long fcsr, void __user *fault_addr,
struct task_struct *tsk)
static void force_fcsr_sig(unsigned long fcsr,
void __user *fault_addr, struct task_struct *tsk)
{
int si_code = FPE_FLTUNK;
@ -458,7 +443,7 @@ void force_fcsr_sig(unsigned long fcsr, void __user *fault_addr,
force_sig_fault(SIGFPE, si_code, fault_addr);
}
int process_fpemu_return(int sig, void __user *fault_addr, unsigned long fcsr)
static int process_fpemu_return(int sig, void __user *fault_addr, unsigned long fcsr)
{
int si_code;
@ -824,7 +809,7 @@ asmlinkage void noinstr do_watch(struct pt_regs *regs)
asmlinkage void noinstr do_ri(struct pt_regs *regs)
{
int status = SIGILL;
unsigned int opcode = 0;
unsigned int __maybe_unused opcode;
unsigned int __user *era = (unsigned int __user *)exception_era(regs);
irqentry_state_t state = irqentry_enter(regs);

55
arch/loongarch/kernel/vmlinux.lds.S
View File

@ -53,33 +53,6 @@ SECTIONS
. = ALIGN(PECOFF_SEGMENT_ALIGN);
_etext = .;
/*
* struct alt_inst entries. From the header (alternative.h):
* "Alternative instructions for different CPU types or capabilities"
* Think locking instructions on spinlocks.
*/
. = ALIGN(4);
.altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
__alt_instructions = .;
*(.altinstructions)
__alt_instructions_end = .;
}
#ifdef CONFIG_RELOCATABLE
. = ALIGN(8);
.la_abs : AT(ADDR(.la_abs) - LOAD_OFFSET) {
__la_abs_begin = .;
*(.la_abs)
__la_abs_end = .;
}
#endif
.got : ALIGN(16) { *(.got) }
.plt : ALIGN(16) { *(.plt) }
.got.plt : ALIGN(16) { *(.got.plt) }
.data.rel : { *(.data.rel*) }
. = ALIGN(PECOFF_SEGMENT_ALIGN);
__init_begin = .;
__inittext_begin = .;
@ -94,6 +67,18 @@ SECTIONS
__initdata_begin = .;
/*
* struct alt_inst entries. From the header (alternative.h):
* "Alternative instructions for different CPU types or capabilities"
* Think locking instructions on spinlocks.
*/
. = ALIGN(4);
.altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
__alt_instructions = .;
*(.altinstructions)
__alt_instructions_end = .;
}
INIT_DATA_SECTION(16)
.exit.data : {
EXIT_DATA
@ -113,6 +98,11 @@ SECTIONS
_sdata = .;
RO_DATA(4096)
.got : ALIGN(16) { *(.got) }
.plt : ALIGN(16) { *(.plt) }
.got.plt : ALIGN(16) { *(.got.plt) }
RW_DATA(1 << CONFIG_L1_CACHE_SHIFT, PAGE_SIZE, THREAD_SIZE)
.rela.dyn : ALIGN(8) {
@ -121,6 +111,17 @@ SECTIONS
__rela_dyn_end = .;
}
.data.rel : { *(.data.rel*) }
#ifdef CONFIG_RELOCATABLE
. = ALIGN(8);
.la_abs : AT(ADDR(.la_abs) - LOAD_OFFSET) {
__la_abs_begin = .;
*(.la_abs)
__la_abs_end = .;
}
#endif
.sdata : {
*(.sdata)
}

2
arch/loongarch/mm/fault.c
View File

@ -20,12 +20,12 @@
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/kdebug.h>
#include <linux/kprobes.h>
#include <linux/perf_event.h>
#include <linux/uaccess.h>
#include <linux/kfence.h>
#include <asm/branch.h>
#include <asm/exception.h>
#include <asm/mmu_context.h>
#include <asm/ptrace.h>

12
arch/loongarch/mm/hugetlbpage.c
View File

@ -50,18 +50,6 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr,
return (pte_t *) pmd;
}
/*
* This function checks for proper alignment of input addr and len parameters.
*/
int is_aligned_hugepage_range(unsigned long addr, unsigned long len)
{
if (len & ~HPAGE_MASK)
return -EINVAL;
if (addr & ~HPAGE_MASK)
return -EINVAL;
return 0;
}
int pmd_huge(pmd_t pmd)
{
return (pmd_val(pmd) & _PAGE_HUGE) != 0;

1
arch/loongarch/mm/ioremap.c
View File

@ -4,6 +4,7 @@
*/
#include <asm/io.h>
#include <asm-generic/early_ioremap.h>
void __init __iomem *early_ioremap(u64 phys_addr, unsigned long size)
{

51
arch/loongarch/mm/kasan_init.c
View File

@ -35,6 +35,57 @@ static pgd_t kasan_pg_dir[PTRS_PER_PGD] __initdata __aligned(PAGE_SIZE);
bool kasan_early_stage = true;
void *kasan_mem_to_shadow(const void *addr)
{
if (!kasan_arch_is_ready()) {
return (void *)(kasan_early_shadow_page);
} else {
unsigned long maddr = (unsigned long)addr;
unsigned long xrange = (maddr >> XRANGE_SHIFT) & 0xffff;
unsigned long offset = 0;
maddr &= XRANGE_SHADOW_MASK;
switch (xrange) {
case XKPRANGE_CC_SEG:
offset = XKPRANGE_CC_SHADOW_OFFSET;
break;
case XKPRANGE_UC_SEG:
offset = XKPRANGE_UC_SHADOW_OFFSET;
break;
case XKVRANGE_VC_SEG:
offset = XKVRANGE_VC_SHADOW_OFFSET;
break;
default:
WARN_ON(1);
return NULL;
}
return (void *)((maddr >> KASAN_SHADOW_SCALE_SHIFT) + offset);
}
}
const void *kasan_shadow_to_mem(const void *shadow_addr)
{
unsigned long addr = (unsigned long)shadow_addr;
if (unlikely(addr > KASAN_SHADOW_END) ||
unlikely(addr < KASAN_SHADOW_START)) {
WARN_ON(1);
return NULL;
}
if (addr >= XKVRANGE_VC_SHADOW_OFFSET)
return (void *)(((addr - XKVRANGE_VC_SHADOW_OFFSET) << KASAN_SHADOW_SCALE_SHIFT) + XKVRANGE_VC_START);
else if (addr >= XKPRANGE_UC_SHADOW_OFFSET)
return (void *)(((addr - XKPRANGE_UC_SHADOW_OFFSET) << KASAN_SHADOW_SCALE_SHIFT) + XKPRANGE_UC_START);
else if (addr >= XKPRANGE_CC_SHADOW_OFFSET)
return (void *)(((addr - XKPRANGE_CC_SHADOW_OFFSET) << KASAN_SHADOW_SCALE_SHIFT) + XKPRANGE_CC_START);
else {
WARN_ON(1);
return NULL;
}
}
/*
* Alloc memory for shadow memory page table.
*/

2
arch/loongarch/mm/tlb.c
View File

@ -261,7 +261,7 @@ unsigned long pcpu_handlers[NR_CPUS];
#endif
extern long exception_handlers[VECSIZE * 128 / sizeof(long)];
void setup_tlb_handler(int cpu)
static void setup_tlb_handler(int cpu)
{
setup_ptwalker();
local_flush_tlb_all();

4
arch/mips/alchemy/devboards/db1000.c
View File

@ -164,6 +164,7 @@ static struct platform_device db1x00_audio_dev = {
/******************************************************************************/
#ifdef CONFIG_MMC_AU1X
static irqreturn_t db1100_mmc_cd(int irq, void *ptr)
{
mmc_detect_change(ptr, msecs_to_jiffies(500));
@ -369,6 +370,7 @@ static struct platform_device db1100_mmc1_dev = {
.num_resources = ARRAY_SIZE(au1100_mmc1_res),
.resource = au1100_mmc1_res,
};
#endif /* CONFIG_MMC_AU1X */
/******************************************************************************/
@ -440,8 +442,10 @@ static struct platform_device *db1x00_devs[] = {
static struct platform_device *db1100_devs[] = {
&au1100_lcd_device,
#ifdef CONFIG_MMC_AU1X
&db1100_mmc0_dev,
&db1100_mmc1_dev,
#endif
};
int __init db1000_dev_setup(void)

6
arch/mips/alchemy/devboards/db1200.c
View File

@ -326,6 +326,7 @@ static struct platform_device db1200_ide_dev = {
/**********************************************************************/
#ifdef CONFIG_MMC_AU1X
/* SD carddetects: they're supposed to be edge-triggered, but ack
* doesn't seem to work (CPLD Rev 2). Instead, the screaming one
* is disabled and its counterpart enabled. The 200ms timeout is
@ -584,6 +585,7 @@ static struct platform_device pb1200_mmc1_dev = {
.num_resources = ARRAY_SIZE(au1200_mmc1_res),
.resource = au1200_mmc1_res,
};
#endif /* CONFIG_MMC_AU1X */
/**********************************************************************/
@ -751,7 +753,9 @@ static struct platform_device db1200_audiodma_dev = {
static struct platform_device *db1200_devs[] __initdata = {
NULL, /* PSC0, selected by S6.8 */
&db1200_ide_dev,
#ifdef CONFIG_MMC_AU1X
&db1200_mmc0_dev,
#endif
&au1200_lcd_dev,
&db1200_eth_dev,
&db1200_nand_dev,
@ -762,7 +766,9 @@ static struct platform_device *db1200_devs[] __initdata = {
};
static struct platform_device *pb1200_devs[] __initdata = {
#ifdef CONFIG_MMC_AU1X
&pb1200_mmc1_dev,
#endif
};
/* Some peripheral base addresses differ on the PB1200 */

4
arch/mips/alchemy/devboards/db1300.c
View File

@ -450,6 +450,7 @@ static struct platform_device db1300_ide_dev = {
/**********************************************************************/
#ifdef CONFIG_MMC_AU1X
static irqreturn_t db1300_mmc_cd(int irq, void *ptr)
{
disable_irq_nosync(irq);
@ -632,6 +633,7 @@ static struct platform_device db1300_sd0_dev = {
.resource = au1300_sd0_res,
.num_resources = ARRAY_SIZE(au1300_sd0_res),
};
#endif /* CONFIG_MMC_AU1X */
/**********************************************************************/
@ -767,8 +769,10 @@ static struct platform_device *db1300_dev[] __initdata = {
&db1300_5waysw_dev,
&db1300_nand_dev,
&db1300_ide_dev,
#ifdef CONFIG_MMC_AU1X
&db1300_sd0_dev,
&db1300_sd1_dev,
#endif
&db1300_lcd_dev,
&db1300_ac97_dev,
&db1300_i2s_dev,

2
arch/parisc/include/asm/hugetlb.h
View File

@ -6,7 +6,7 @@
#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte);
pte_t *ptep, pte_t pte, unsigned long sz);
#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,

37
arch/parisc/include/asm/ldcw.h
View File

@ -2,39 +2,42 @@
#ifndef __PARISC_LDCW_H
#define __PARISC_LDCW_H
#ifndef CONFIG_PA20
/* Because kmalloc only guarantees 8-byte alignment for kmalloc'd data,
and GCC only guarantees 8-byte alignment for stack locals, we can't
be assured of 16-byte alignment for atomic lock data even if we
specify "__attribute ((aligned(16)))" in the type declaration. So,
we use a struct containing an array of four ints for the atomic lock
type and dynamically select the 16-byte aligned int from the array
for the semaphore. */
for the semaphore. */
/* From: "Jim Hull" <jim.hull of hp.com>
I've attached a summary of the change, but basically, for PA 2.0, as
long as the ",CO" (coherent operation) completer is implemented, then the
16-byte alignment requirement for ldcw and ldcd is relaxed, and instead
they only require "natural" alignment (4-byte for ldcw, 8-byte for
ldcd).
Although the cache control hint is accepted by all PA 2.0 processors,
it is only implemented on PA8800/PA8900 CPUs. Prior PA8X00 CPUs still
require 16-byte alignment. If the address is unaligned, the operation
of the instruction is undefined. The ldcw instruction does not generate
unaligned data reference traps so misaligned accesses are not detected.
This hid the problem for years. So, restore the 16-byte alignment dropped
by Kyle McMartin in "Remove __ldcw_align for PA-RISC 2.0 processors". */
#define __PA_LDCW_ALIGNMENT 16
#define __PA_LDCW_ALIGN_ORDER 4
#define __ldcw_align(a) ({ \
unsigned long __ret = (unsigned long) &(a)->lock[0]; \
__ret = (__ret + __PA_LDCW_ALIGNMENT - 1) \
& ~(__PA_LDCW_ALIGNMENT - 1); \
(volatile unsigned int *) __ret; \
})
#define __LDCW "ldcw"
#else /*CONFIG_PA20*/
/* From: "Jim Hull" <jim.hull of hp.com>
I've attached a summary of the change, but basically, for PA 2.0, as
long as the ",CO" (coherent operation) completer is specified, then the
16-byte alignment requirement for ldcw and ldcd is relaxed, and instead
they only require "natural" alignment (4-byte for ldcw, 8-byte for
ldcd). */
#define __PA_LDCW_ALIGNMENT 4
#define __PA_LDCW_ALIGN_ORDER 2
#define __ldcw_align(a) (&(a)->slock)
#ifdef CONFIG_PA20
#define __LDCW "ldcw,co"
#endif /*!CONFIG_PA20*/
#else
#define __LDCW "ldcw"
#endif
/* LDCW, the only atomic read-write operation PA-RISC has. *sigh*.
We don't explicitly expose that "*a" may be written as reload

5
arch/parisc/include/asm/spinlock_types.h
View File

@ -9,15 +9,10 @@
#ifndef __ASSEMBLY__
typedef struct {
#ifdef CONFIG_PA20
volatile unsigned int slock;
# define __ARCH_SPIN_LOCK_UNLOCKED { __ARCH_SPIN_LOCK_UNLOCKED_VAL }
#else
volatile unsigned int lock[4];
# define __ARCH_SPIN_LOCK_UNLOCKED \
{ { __ARCH_SPIN_LOCK_UNLOCKED_VAL, __ARCH_SPIN_LOCK_UNLOCKED_VAL, \
__ARCH_SPIN_LOCK_UNLOCKED_VAL, __ARCH_SPIN_LOCK_UNLOCKED_VAL } }
#endif
} arch_spinlock_t;

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