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Merge tag 'noinstr-lds-2020-05-19' into core/rcu 

Get the noinstr section and annotation markers to base the RCU parts on.
This commit is contained in:
Thomas Gleixner 2020-05-19 15:50:34 +02:00
parent 68f0f2690e 6553896666
commit 1ed0948eea
886 changed files with 9240 additions and 4566 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
.clang-format
View File

@ -142,10 +142,13 @@ ForEachMacros:
- 'for_each_card_auxs'
- 'for_each_card_auxs_safe'
- 'for_each_card_components'
- 'for_each_card_dapms'
- 'for_each_card_pre_auxs'
- 'for_each_card_prelinks'
- 'for_each_card_rtds'
- 'for_each_card_rtds_safe'
- 'for_each_card_widgets'
- 'for_each_card_widgets_safe'
- 'for_each_cgroup_storage_type'
- 'for_each_child_of_node'
- 'for_each_clear_bit'
@ -160,6 +163,7 @@ ForEachMacros:
- 'for_each_cpu_and'
- 'for_each_cpu_not'
- 'for_each_cpu_wrap'
- 'for_each_dapm_widgets'
- 'for_each_dev_addr'
- 'for_each_dev_scope'
- 'for_each_displayid_db'
@ -170,7 +174,6 @@ ForEachMacros:
- 'for_each_dpcm_fe'
- 'for_each_drhd_unit'
- 'for_each_dss_dev'
- 'for_each_efi_handle'
- 'for_each_efi_memory_desc'
- 'for_each_efi_memory_desc_in_map'
- 'for_each_element'
@ -191,6 +194,7 @@ ForEachMacros:
- 'for_each_ip_tunnel_rcu'
- 'for_each_irq_nr'
- 'for_each_link_codecs'
- 'for_each_link_cpus'
- 'for_each_link_platforms'
- 'for_each_lru'
- 'for_each_matching_node'
@ -250,6 +254,7 @@ ForEachMacros:
- 'for_each_pci_bridge'
- 'for_each_pci_dev'
- 'for_each_pci_msi_entry'
- 'for_each_pcm_streams'
- 'for_each_populated_zone'
- 'for_each_possible_cpu'
- 'for_each_present_cpu'
@ -260,9 +265,12 @@ ForEachMacros:
- 'for_each_property_of_node'
- 'for_each_registered_fb'
- 'for_each_reserved_mem_region'
- 'for_each_rtd_codec_dai'
- 'for_each_rtd_codec_dai_rollback'
- 'for_each_rtd_codec_dais'
- 'for_each_rtd_codec_dais_rollback'
- 'for_each_rtd_components'
- 'for_each_rtd_cpu_dais'
- 'for_each_rtd_cpu_dais_rollback'
- 'for_each_rtd_dais'
- 'for_each_set_bit'
- 'for_each_set_bit_from'
- 'for_each_set_clump8'
@ -334,6 +342,7 @@ ForEachMacros:
- 'klp_for_each_object'
- 'klp_for_each_object_safe'
- 'klp_for_each_object_static'
- 'kunit_suite_for_each_test_case'
- 'kvm_for_each_memslot'
- 'kvm_for_each_vcpu'
- 'list_for_each'
@ -387,6 +396,7 @@ ForEachMacros:
- 'of_property_for_each_string'
- 'of_property_for_each_u32'
- 'pci_bus_for_each_resource'
- 'pcm_for_each_format'
- 'ping_portaddr_for_each_entry'
- 'plist_for_each'
- 'plist_for_each_continue'
@ -482,7 +492,7 @@ KeepEmptyLinesAtTheStartOfBlocks: false
MacroBlockBegin: ''
MacroBlockEnd: ''
MaxEmptyLinesToKeep: 1
NamespaceIndentation: Inner
NamespaceIndentation: None
#ObjCBinPackProtocolList: Auto # Unknown to clang-format-5.0
ObjCBlockIndentWidth: 8
ObjCSpaceAfterProperty: true

13
Documentation/admin-guide/device-mapper/dm-integrity.rst
View File

@ -182,12 +182,15 @@ fix_padding
space-efficient. If this option is not present, large padding is
used - that is for compatibility with older kernels.
allow_discards
Allow block discard requests (a.k.a. TRIM) for the integrity device.
Discards are only allowed to devices using internal hash.
The journal mode (D/J), buffer_sectors, journal_watermark, commit_time can
be changed when reloading the target (load an inactive table and swap the
tables with suspend and resume). The other arguments should not be changed
when reloading the target because the layout of disk data depend on them
and the reloaded target would be non-functional.
The journal mode (D/J), buffer_sectors, journal_watermark, commit_time and
allow_discards can be changed when reloading the target (load an inactive
table and swap the tables with suspend and resume). The other arguments
should not be changed when reloading the target because the layout of disk
data depend on them and the reloaded target would be non-functional.
The layout of the formatted block device:

3
Documentation/admin-guide/kernel-parameters.txt
View File

@ -5206,8 +5206,7 @@
usbcore.old_scheme_first=
[USB] Start with the old device initialization
scheme, applies only to low and full-speed devices
(default 0 = off).
scheme (default 0 = off).
usbcore.usbfs_memory_mb=
[USB] Memory limit (in MB) for buffers allocated by

33
Documentation/arm64/amu.rst
View File

@ -23,12 +23,13 @@ optional external memory-mapped interface.
Version 1 of the Activity Monitors architecture implements a counter group
of four fixed and architecturally defined 64-bit event counters.
- CPU cycle counter: increments at the frequency of the CPU.
- Constant counter: increments at the fixed frequency of the system
- CPU cycle counter: increments at the frequency of the CPU.
- Constant counter: increments at the fixed frequency of the system
clock.
- Instructions retired: increments with every architecturally executed
- Instructions retired: increments with every architecturally executed
instruction.
- Memory stall cycles: counts instruction dispatch stall cycles caused by
- Memory stall cycles: counts instruction dispatch stall cycles caused by
misses in the last level cache within the clock domain.
When in WFI or WFE these counters do not increment.
@ -57,10 +58,11 @@ counters, only the presence of the extension.
Firmware (code running at higher exception levels, e.g. arm-tf) support is
needed to:
- Enable access for lower exception levels (EL2 and EL1) to the AMU
- Enable access for lower exception levels (EL2 and EL1) to the AMU
registers.
- Enable the counters. If not enabled these will read as 0.
- Save/restore the counters before/after the CPU is being put/brought up
- Enable the counters. If not enabled these will read as 0.
- Save/restore the counters before/after the CPU is being put/brought up
from the 'off' power state.
When using kernels that have this feature enabled but boot with broken
@ -78,10 +80,11 @@ are not trapped in EL2/EL3.
The fixed counters of AMUv1 are accessible though the following system
register definitions:
- SYS_AMEVCNTR0_CORE_EL0
- SYS_AMEVCNTR0_CONST_EL0
- SYS_AMEVCNTR0_INST_RET_EL0
- SYS_AMEVCNTR0_MEM_STALL_EL0
- SYS_AMEVCNTR0_CORE_EL0
- SYS_AMEVCNTR0_CONST_EL0
- SYS_AMEVCNTR0_INST_RET_EL0
- SYS_AMEVCNTR0_MEM_STALL_EL0
Auxiliary platform specific counters can be accessed using
SYS_AMEVCNTR1_EL0(n), where n is a value between 0 and 15.
@ -93,9 +96,10 @@ Userspace access
----------------
Currently, access from userspace to the AMU registers is disabled due to:
- Security reasons: they might expose information about code executed in
- Security reasons: they might expose information about code executed in
secure mode.
- Purpose: AMU counters are intended for system management use.
- Purpose: AMU counters are intended for system management use.
Also, the presence of the feature is not visible to userspace.
@ -105,7 +109,8 @@ Virtualization
Currently, access from userspace (EL0) and kernelspace (EL1) on the KVM
guest side is disabled due to:
- Security reasons: they might expose information about code executed
- Security reasons: they might expose information about code executed
by other guests or the host.
Any attempt to access the AMU registers will result in an UNDEFINED

23
Documentation/devicetree/bindings/Makefile
View File

@ -2,6 +2,7 @@
DT_DOC_CHECKER ?= dt-doc-validate
DT_EXTRACT_EX ?= dt-extract-example
DT_MK_SCHEMA ?= dt-mk-schema
DT_MK_SCHEMA_USERONLY_FLAG := $(if $(DT_SCHEMA_FILES), -u)
quiet_cmd_chk_binding = CHKDT $(patsubst $(srctree)/%,%,$<)
cmd_chk_binding = $(DT_DOC_CHECKER) -u $(srctree)/$(src) $< ; \
@ -13,16 +14,18 @@ $(obj)/%.example.dts: $(src)/%.yaml FORCE
# Use full schemas when checking %.example.dts
DT_TMP_SCHEMA := $(obj)/processed-schema-examples.yaml
quiet_cmd_mk_schema = SCHEMA $@
cmd_mk_schema = $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) -o $@ $(real-prereqs)
DT_DOCS = $(addprefix $(src)/, \
$(shell \
cd $(srctree)/$(src) && \
find * \( -name '*.yaml' ! \
find_cmd = find $(srctree)/$(src) \( -name '*.yaml' ! \
-name 'processed-schema*' ! \
-name '*.example.dt.yaml' \) \
))
-name '*.example.dt.yaml' \)
quiet_cmd_mk_schema = SCHEMA $@
cmd_mk_schema = rm -f $@ ; \
$(if $(DT_MK_SCHEMA_FLAGS), \
echo $(real-prereqs), \
$(find_cmd)) | \
xargs $(DT_MK_SCHEMA) $(DT_MK_SCHEMA_FLAGS) >> $@
DT_DOCS = $(shell $(find_cmd) | sed -e 's|^$(srctree)/||')
DT_SCHEMA_FILES ?= $(DT_DOCS)
@ -37,7 +40,7 @@ override DTC_FLAGS := \
$(obj)/processed-schema-examples.yaml: $(DT_DOCS) FORCE
$(call if_changed,mk_schema)
$(obj)/processed-schema.yaml: DT_MK_SCHEMA_FLAGS := -u
$(obj)/processed-schema.yaml: DT_MK_SCHEMA_FLAGS := $(DT_MK_SCHEMA_USERONLY_FLAG)
$(obj)/processed-schema.yaml: $(DT_SCHEMA_FILES) FORCE
$(call if_changed,mk_schema)

1
Documentation/devicetree/bindings/display/panel/leadtek,ltk500hd1829.yaml
View File

@ -37,7 +37,6 @@ examples:
dsi {
#address-cells = <1>;
#size-cells = <0>;
reg = <0xff450000 0x1000>;
panel@0 {
compatible = "leadtek,ltk500hd1829";

8
Documentation/devicetree/bindings/display/panel/lvds.yaml
View File

@ -96,12 +96,20 @@ properties:
If set, reverse the bit order described in the data mappings below on all
data lanes, transmitting bits for slots 6 to 0 instead of 0 to 6.
port: true
ports: true
required:
- compatible
- data-mapping
- width-mm
- height-mm
- panel-timing
oneOf:
- required:
- port
- required:
- ports
...

1
Documentation/devicetree/bindings/display/panel/xinpeng,xpp055c272.yaml
View File

@ -37,7 +37,6 @@ examples:
dsi {
#address-cells = <1>;
#size-cells = <0>;
reg = <0xff450000 0x1000>;
panel@0 {
compatible = "xinpeng,xpp055c272";

7
Documentation/devicetree/bindings/dma/socionext,uniphier-xdmac.yaml
View File

@ -22,9 +22,7 @@ properties:
const: socionext,uniphier-xdmac
reg:
items:
- description: XDMAC base register region (offset and length)
- description: XDMAC extension register region (offset and length)
maxItems: 1
interrupts:
maxItems: 1
@ -49,12 +47,13 @@ required:
- reg
- interrupts
- "#dma-cells"
- dma-channels
examples:
- |
xdmac: dma-controller@5fc10000 {
compatible = "socionext,uniphier-xdmac";
reg = <0x5fc10000 0x1000>, <0x5fc20000 0x800>;
reg = <0x5fc10000 0x5300>;
interrupts = <0 188 4>;
#dma-cells = <2>;
dma-channels = <16>;

2
Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml
View File

@ -1,7 +1,7 @@
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: "http://devicetree.org/schemas/bindings/iio/adc/st,stm32-adc.yaml#"
$id: "http://devicetree.org/schemas/iio/adc/st,stm32-adc.yaml#"
$schema: "http://devicetree.org/meta-schemas/core.yaml#"
title: STMicroelectronics STM32 ADC bindings

2
Documentation/devicetree/bindings/mfd/st,stpmic1.yaml
View File

@ -259,8 +259,6 @@ properties:
additionalProperties: false
additionalProperties: false
additionalProperties: false
required:

6
Documentation/devicetree/bindings/phy/qcom,qusb2-phy.yaml
View File

@ -97,7 +97,7 @@ then:
- $ref: /schemas/types.yaml#/definitions/uint32
- minimum: 0
maximum: 63
default: 0
default: 32
qcom,charge-ctrl-value:
description:
@ -130,7 +130,7 @@ then:
- $ref: /schemas/types.yaml#/definitions/uint32
- minimum: 0
maximum: 3
default: 2
default: 0
qcom,preemphasis-width:
description:
@ -152,7 +152,7 @@ then:
- $ref: /schemas/types.yaml#/definitions/uint32
- minimum: 0
maximum: 3
default: 0
default: 1
required:
- compatible

1
Documentation/devicetree/bindings/regulator/mps,mp5416.yaml
View File

@ -37,7 +37,6 @@ properties:
type: object
additionalProperties: false
additionalProperties: false
required:
- compatible

3
Documentation/devicetree/bindings/regulator/mps,mpq7920.yaml
View File

@ -75,7 +75,8 @@ properties:
description: |
disables over voltage protection of this buck
additionalProperties: false
unevaluatedProperties: false
additionalProperties: false
required:

6
Documentation/devicetree/bindings/regulator/rohm,bd71828-regulator.yaml
View File

@ -35,6 +35,8 @@ patternProperties:
description:
should be "ldo1", ..., "ldo7"
unevaluatedProperties: false
"^BUCK[1-7]$":
type: object
allOf:
@ -103,5 +105,7 @@ patternProperties:
required:
- regulator-name
additionalProperties: false
unevaluatedProperties: false
additionalProperties: false

6
Documentation/devicetree/bindings/regulator/rohm,bd71837-regulator.yaml
View File

@ -41,6 +41,8 @@ patternProperties:
description:
should be "ldo1", ..., "ldo7"
unevaluatedProperties: false
"^BUCK[1-8]$":
type: object
allOf:
@ -99,5 +101,7 @@ patternProperties:
required:
- regulator-name
additionalProperties: false
unevaluatedProperties: false
additionalProperties: false

6
Documentation/devicetree/bindings/regulator/rohm,bd71847-regulator.yaml
View File

@ -40,6 +40,8 @@ patternProperties:
description:
should be "ldo1", ..., "ldo6"
unevaluatedProperties: false
"^BUCK[1-6]$":
type: object
allOf:
@ -93,5 +95,7 @@ patternProperties:
required:
- regulator-name
additionalProperties: false
unevaluatedProperties: false
additionalProperties: false

3
Documentation/devicetree/bindings/sound/rockchip-i2s.yaml
View File

@ -56,6 +56,9 @@ properties:
- const: tx
- const: rx
power-domains:
maxItems: 1
rockchip,capture-channels:
allOf:
- $ref: /schemas/types.yaml#/definitions/uint32

45
Documentation/devicetree/bindings/sound/rockchip-spdif.txt
View File

@ -1,45 +0,0 @@
* Rockchip SPDIF transceiver
The S/PDIF audio block is a stereo transceiver that allows the
processor to receive and transmit digital audio via an coaxial cable or
a fibre cable.
Required properties:
- compatible: should be one of the following:
- "rockchip,rk3066-spdif"
- "rockchip,rk3188-spdif"
- "rockchip,rk3228-spdif"
- "rockchip,rk3288-spdif"
- "rockchip,rk3328-spdif"
- "rockchip,rk3366-spdif"
- "rockchip,rk3368-spdif"
- "rockchip,rk3399-spdif"
- reg: physical base address of the controller and length of memory mapped
region.
- interrupts: should contain the SPDIF interrupt.
- dmas: DMA specifiers for tx dma. See the DMA client binding,
Documentation/devicetree/bindings/dma/dma.txt
- dma-names: should be "tx"
- clocks: a list of phandle + clock-specifier pairs, one for each entry
in clock-names.
- clock-names: should contain following:
- "hclk": clock for SPDIF controller
- "mclk" : clock for SPDIF bus
Required properties on RK3288:
- rockchip,grf: the phandle of the syscon node for the general register
file (GRF)
Example for the rk3188 SPDIF controller:
spdif: spdif@1011e000 {
compatible = "rockchip,rk3188-spdif", "rockchip,rk3066-spdif";
reg = <0x1011e000 0x2000>;
interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
dmas = <&dmac1_s 8>;
dma-names = "tx";
clock-names = "hclk", "mclk";
clocks = <&cru HCLK_SPDIF>, <&cru SCLK_SPDIF>;
#sound-dai-cells = <0>;
};

101
Documentation/devicetree/bindings/sound/rockchip-spdif.yaml Normal file
View File

@ -0,0 +1,101 @@
# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/rockchip-spdif.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Rockchip SPDIF transceiver
description:
The S/PDIF audio block is a stereo transceiver that allows the
processor to receive and transmit digital audio via a coaxial or
fibre cable.
maintainers:
- Heiko Stuebner <heiko@sntech.de>
properties:
compatible:
oneOf:
- const: rockchip,rk3066-spdif
- const: rockchip,rk3228-spdif
- const: rockchip,rk3328-spdif
- const: rockchip,rk3366-spdif
- const: rockchip,rk3368-spdif
- const: rockchip,rk3399-spdif
- items:
- enum:
- rockchip,rk3188-spdif
- rockchip,rk3288-spdif
- const: rockchip,rk3066-spdif
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
items:
- description: clock for SPDIF bus
- description: clock for SPDIF controller
clock-names:
items:
- const: mclk
- const: hclk
dmas:
maxItems: 1
dma-names:
const: tx
power-domains:
maxItems: 1
rockchip,grf:
$ref: /schemas/types.yaml#/definitions/phandle
description:
The phandle of the syscon node for the GRF register.
Required property on RK3288.
"#sound-dai-cells":
const: 0
required:
- compatible
- reg
- interrupts
- clocks
- clock-names
- dmas
- dma-names
- "#sound-dai-cells"
if:
properties:
compatible:
contains:
const: rockchip,rk3288-spdif
then:
required:
- rockchip,grf
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/rk3188-cru.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
spdif: spdif@1011e000 {
compatible = "rockchip,rk3188-spdif", "rockchip,rk3066-spdif";
reg = <0x1011e000 0x2000>;
interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cru SCLK_SPDIF>, <&cru HCLK_SPDIF>;
clock-names = "mclk", "hclk";
dmas = <&dmac1_s 8>;
dma-names = "tx";
#sound-dai-cells = <0>;
};

1
Documentation/devicetree/bindings/usb/renesas,usb3-peri.yaml
View File

@ -18,6 +18,7 @@ properties:
- renesas,r8a774c0-usb3-peri # RZ/G2E
- renesas,r8a7795-usb3-peri # R-Car H3
- renesas,r8a7796-usb3-peri # R-Car M3-W
- renesas,r8a77961-usb3-peri # R-Car M3-W+
- renesas,r8a77965-usb3-peri # R-Car M3-N
- renesas,r8a77990-usb3-peri # R-Car E3
- const: renesas,rcar-gen3-usb3-peri

1
Documentation/devicetree/bindings/usb/renesas,usbhs.yaml
View File

@ -40,6 +40,7 @@ properties:
- renesas,usbhs-r8a774c0 # RZ/G2E
- renesas,usbhs-r8a7795 # R-Car H3
- renesas,usbhs-r8a7796 # R-Car M3-W
- renesas,usbhs-r8a77961 # R-Car M3-W+
- renesas,usbhs-r8a77965 # R-Car M3-N
- renesas,usbhs-r8a77990 # R-Car E3
- renesas,usbhs-r8a77995 # R-Car D3

3
Documentation/devicetree/bindings/usb/usb-xhci.txt
View File

@ -16,7 +16,8 @@ Required properties:
- "renesas,xhci-r8a7791" for r8a7791 SoC
- "renesas,xhci-r8a7793" for r8a7793 SoC
- "renesas,xhci-r8a7795" for r8a7795 SoC
- "renesas,xhci-r8a7796" for r8a7796 SoC
- "renesas,xhci-r8a7796" for r8a77960 SoC
- "renesas,xhci-r8a77961" for r8a77961 SoC
- "renesas,xhci-r8a77965" for r8a77965 SoC
- "renesas,xhci-r8a77990" for r8a77990 SoC
- "renesas,rcar-gen2-xhci" for a generic R-Car Gen2 or RZ/G1 compatible

2
Documentation/filesystems/debugfs.rst
View File

@ -79,7 +79,7 @@ created with any of::
struct dentry *parent, u8 *value);
void debugfs_create_u16(const char *name, umode_t mode,
struct dentry *parent, u16 *value);
struct dentry *debugfs_create_u32(const char *name, umode_t mode,
void debugfs_create_u32(const char *name, umode_t mode,
struct dentry *parent, u32 *value);
void debugfs_create_u64(const char *name, umode_t mode,
struct dentry *parent, u64 *value);

3
Documentation/kbuild/makefiles.rst
View File

@ -1241,7 +1241,8 @@ When kbuild executes, the following steps are followed (roughly):
will be displayed with "make KBUILD_VERBOSE=0".
--- 6.9 Preprocessing linker scripts
6.9 Preprocessing linker scripts
--------------------------------
When the vmlinux image is built, the linker script
arch/$(ARCH)/kernel/vmlinux.lds is used.

4
Documentation/networking/devlink/ice.rst
View File

@ -61,8 +61,8 @@ The ``ice`` driver reports the following versions
- running
- ICE OS Default Package
- The name of the DDP package that is active in the device. The DDP
package is loaded by the driver during initialization. Each varation
of DDP package shall have a unique name.
package is loaded by the driver during initialization. Each
variation of the DDP package has a unique name.
* - ``fw.app``
- running
- 1.3.1.0

7
Documentation/networking/ip-sysctl.txt
View File

@ -983,6 +983,13 @@ ip_early_demux - BOOLEAN
reduces overall throughput, in such case you should disable it.
Default: 1
ping_group_range - 2 INTEGERS
Restrict ICMP_PROTO datagram sockets to users in the group range.
The default is "1 0", meaning, that nobody (not even root) may
create ping sockets. Setting it to "100 100" would grant permissions
to the single group. "0 4294967295" would enable it for the world, "100
4294967295" would enable it for the users, but not daemons.
tcp_early_demux - BOOLEAN
Enable early demux for established TCP sockets.
Default: 1

2
Documentation/virt/kvm/index.rst
View File

@ -28,3 +28,5 @@ KVM
arm/index
devices/index
running-nested-guests

276
Documentation/virt/kvm/running-nested-guests.rst Normal file
View File

@ -0,0 +1,276 @@
==============================
Running nested guests with KVM
==============================
A nested guest is the ability to run a guest inside another guest (it
can be KVM-based or a different hypervisor). The straightforward
example is a KVM guest that in turn runs on a KVM guest (the rest of
this document is built on this example)::
.----------------. .----------------.
| | | |
| L2 | | L2 |
| (Nested Guest) | | (Nested Guest) |
| | | |
|----------------'--'----------------|
| |
| L1 (Guest Hypervisor) |
| KVM (/dev/kvm) |
| |
.------------------------------------------------------.
| L0 (Host Hypervisor) |
| KVM (/dev/kvm) |
|------------------------------------------------------|
| Hardware (with virtualization extensions) |
'------------------------------------------------------'
Terminology:
- L0 – level-0; the bare metal host, running KVM
- L1 – level-1 guest; a VM running on L0; also called the "guest
hypervisor", as it itself is capable of running KVM.
- L2 – level-2 guest; a VM running on L1, this is the "nested guest"
.. note:: The above diagram is modelled after the x86 architecture;
s390x, ppc64 and other architectures are likely to have
a different design for nesting.
For example, s390x always has an LPAR (LogicalPARtition)
hypervisor running on bare metal, adding another layer and
resulting in at least four levels in a nested setup — L0 (bare
metal, running the LPAR hypervisor), L1 (host hypervisor), L2
(guest hypervisor), L3 (nested guest).
This document will stick with the three-level terminology (L0,
L1, and L2) for all architectures; and will largely focus on
x86.
Use Cases
---------
There are several scenarios where nested KVM can be useful, to name a
few:
- As a developer, you want to test your software on different operating
systems (OSes). Instead of renting multiple VMs from a Cloud
Provider, using nested KVM lets you rent a large enough "guest
hypervisor" (level-1 guest). This in turn allows you to create
multiple nested guests (level-2 guests), running different OSes, on
which you can develop and test your software.
- Live migration of "guest hypervisors" and their nested guests, for
load balancing, disaster recovery, etc.
- VM image creation tools (e.g. ``virt-install``, etc) often run
their own VM, and users expect these to work inside a VM.
- Some OSes use virtualization internally for security (e.g. to let
applications run safely in isolation).
Enabling "nested" (x86)
-----------------------
From Linux kernel v4.19 onwards, the ``nested`` KVM parameter is enabled
by default for Intel and AMD. (Though your Linux distribution might
override this default.)
In case you are running a Linux kernel older than v4.19, to enable
nesting, set the ``nested`` KVM module parameter to ``Y`` or ``1``. To
persist this setting across reboots, you can add it in a config file, as
shown below:
1. On the bare metal host (L0), list the kernel modules and ensure that
the KVM modules::
$ lsmod | grep -i kvm
kvm_intel 133627 0
kvm 435079 1 kvm_intel
2. Show information for ``kvm_intel`` module::
$ modinfo kvm_intel | grep -i nested
parm: nested:bool
3. For the nested KVM configuration to persist across reboots, place the
below in ``/etc/modprobed/kvm_intel.conf`` (create the file if it
doesn't exist)::
$ cat /etc/modprobe.d/kvm_intel.conf
options kvm-intel nested=y
4. Unload and re-load the KVM Intel module::
$ sudo rmmod kvm-intel
$ sudo modprobe kvm-intel
5. Verify if the ``nested`` parameter for KVM is enabled::
$ cat /sys/module/kvm_intel/parameters/nested
Y
For AMD hosts, the process is the same as above, except that the module
name is ``kvm-amd``.
Additional nested-related kernel parameters (x86)
-------------------------------------------------
If your hardware is sufficiently advanced (Intel Haswell processor or
higher, which has newer hardware virt extensions), the following
additional features will also be enabled by default: "Shadow VMCS
(Virtual Machine Control Structure)", APIC Virtualization on your bare
metal host (L0). Parameters for Intel hosts::
$ cat /sys/module/kvm_intel/parameters/enable_shadow_vmcs
Y
$ cat /sys/module/kvm_intel/parameters/enable_apicv
Y
$ cat /sys/module/kvm_intel/parameters/ept
Y
.. note:: If you suspect your L2 (i.e. nested guest) is running slower,
ensure the above are enabled (particularly
``enable_shadow_vmcs`` and ``ept``).
Starting a nested guest (x86)
-----------------------------
Once your bare metal host (L0) is configured for nesting, you should be
able to start an L1 guest with::
$ qemu-kvm -cpu host [...]
The above will pass through the host CPU's capabilities as-is to the
gues); or for better live migration compatibility, use a named CPU
model supported by QEMU. e.g.::
$ qemu-kvm -cpu Haswell-noTSX-IBRS,vmx=on
then the guest hypervisor will subsequently be capable of running a
nested guest with accelerated KVM.
Enabling "nested" (s390x)
-------------------------
1. On the host hypervisor (L0), enable the ``nested`` parameter on
s390x::
$ rmmod kvm
$ modprobe kvm nested=1
.. note:: On s390x, the kernel parameter ``hpage`` is mutually exclusive
with the ``nested`` paramter — i.e. to be able to enable
``nested``, the ``hpage`` parameter *must* be disabled.
2. The guest hypervisor (L1) must be provided with the ``sie`` CPU
feature — with QEMU, this can be done by using "host passthrough"
(via the command-line ``-cpu host``).
3. Now the KVM module can be loaded in the L1 (guest hypervisor)::
$ modprobe kvm
Live migration with nested KVM
------------------------------
Migrating an L1 guest, with a *live* nested guest in it, to another
bare metal host, works as of Linux kernel 5.3 and QEMU 4.2.0 for
Intel x86 systems, and even on older versions for s390x.
On AMD systems, once an L1 guest has started an L2 guest, the L1 guest
should no longer be migrated or saved (refer to QEMU documentation on
"savevm"/"loadvm") until the L2 guest shuts down. Attempting to migrate
or save-and-load an L1 guest while an L2 guest is running will result in
undefined behavior. You might see a ``kernel BUG!`` entry in ``dmesg``, a
kernel 'oops', or an outright kernel panic. Such a migrated or loaded L1
guest can no longer be considered stable or secure, and must be restarted.
Migrating an L1 guest merely configured to support nesting, while not
actually running L2 guests, is expected to function normally even on AMD
systems but may fail once guests are started.
Migrating an L2 guest is always expected to succeed, so all the following
scenarios should work even on AMD systems:
- Migrating a nested guest (L2) to another L1 guest on the *same* bare
metal host.
- Migrating a nested guest (L2) to another L1 guest on a *different*
bare metal host.
- Migrating a nested guest (L2) to a bare metal host.
Reporting bugs from nested setups
-----------------------------------
Debugging "nested" problems can involve sifting through log files across
L0, L1 and L2; this can result in tedious back-n-forth between the bug
reporter and the bug fixer.
- Mention that you are in a "nested" setup. If you are running any kind
of "nesting" at all, say so. Unfortunately, this needs to be called
out because when reporting bugs, people tend to forget to even
*mention* that they're using nested virtualization.
- Ensure you are actually running KVM on KVM. Sometimes people do not
have KVM enabled for their guest hypervisor (L1), which results in
them running with pure emulation or what QEMU calls it as "TCG", but
they think they're running nested KVM. Thus confusing "nested Virt"
(which could also mean, QEMU on KVM) with "nested KVM" (KVM on KVM).
Information to collect (generic)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The following is not an exhaustive list, but a very good starting point:
- Kernel, libvirt, and QEMU version from L0
- Kernel, libvirt and QEMU version from L1
- QEMU command-line of L1 -- when using libvirt, you'll find it here:
``/var/log/libvirt/qemu/instance.log``
- QEMU command-line of L2 -- as above, when using libvirt, get the
complete libvirt-generated QEMU command-line
- ``cat /sys/cpuinfo`` from L0
- ``cat /sys/cpuinfo`` from L1
- ``lscpu`` from L0
- ``lscpu`` from L1
- Full ``dmesg`` output from L0
- Full ``dmesg`` output from L1
x86-specific info to collect
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Both the below commands, ``x86info`` and ``dmidecode``, should be
available on most Linux distributions with the same name:
- Output of: ``x86info -a`` from L0
- Output of: ``x86info -a`` from L1
- Output of: ``dmidecode`` from L0
- Output of: ``dmidecode`` from L1
s390x-specific info to collect
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Along with the earlier mentioned generic details, the below is
also recommended:
- ``/proc/sysinfo`` from L1; this will also include the info from L0

88
MAINTAINERS
View File

@ -189,7 +189,7 @@ F: drivers/net/hamradio/6pack.c
M: Johannes Berg <johannes@sipsolutions.net>
L: linux-wireless@vger.kernel.org
S: Maintained
W: http://wireless.kernel.org/
W: https://wireless.wiki.kernel.org/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git
F: Documentation/driver-api/80211/cfg80211.rst
@ -505,7 +505,7 @@ F: drivers/hwmon/adm1029.c
ADM8211 WIRELESS DRIVER
L: linux-wireless@vger.kernel.org
S: Orphan
W: http://wireless.kernel.org/
W: https://wireless.wiki.kernel.org/
F: drivers/net/wireless/admtek/adm8211.*
ADP1653 FLASH CONTROLLER DRIVER
@ -570,7 +570,7 @@ F: Documentation/devicetree/bindings/iio/accel/adi,adxl345.yaml
F: drivers/input/misc/adxl34x.c
ADXL372 THREE-AXIS DIGITAL ACCELEROMETER DRIVER
M: Stefan Popa <stefan.popa@analog.com>
M: Michael Hennerich <michael.hennerich@analog.com>
S: Supported
W: http://ez.analog.com/community/linux-device-drivers
F: Documentation/devicetree/bindings/iio/accel/adi,adxl372.yaml
@ -922,7 +922,7 @@ F: arch/arm64/boot/dts/amd/amd-seattle-xgbe*.dtsi
F: drivers/net/ethernet/amd/xgbe/
ANALOG DEVICES INC AD5686 DRIVER
M: Stefan Popa <stefan.popa@analog.com>
M: Michael Hennerich <Michael.Hennerich@analog.com>
L: linux-pm@vger.kernel.org
S: Supported
W: http://ez.analog.com/community/linux-device-drivers
@ -930,7 +930,7 @@ F: drivers/iio/dac/ad5686*
F: drivers/iio/dac/ad5696*
ANALOG DEVICES INC AD5758 DRIVER
M: Stefan Popa <stefan.popa@analog.com>
M: Michael Hennerich <Michael.Hennerich@analog.com>
L: linux-iio@vger.kernel.org
S: Supported
W: http://ez.analog.com/community/linux-device-drivers
@ -946,7 +946,7 @@ F: Documentation/devicetree/bindings/iio/adc/adi,ad7091r5.yaml
F: drivers/iio/adc/ad7091r5.c
ANALOG DEVICES INC AD7124 DRIVER
M: Stefan Popa <stefan.popa@analog.com>
M: Michael Hennerich <Michael.Hennerich@analog.com>
L: linux-iio@vger.kernel.org
S: Supported
W: http://ez.analog.com/community/linux-device-drivers
@ -970,7 +970,7 @@ F: Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml
F: drivers/iio/adc/ad7292.c
ANALOG DEVICES INC AD7606 DRIVER
M: Stefan Popa <stefan.popa@analog.com>
M: Michael Hennerich <Michael.Hennerich@analog.com>
M: Beniamin Bia <beniamin.bia@analog.com>
L: linux-iio@vger.kernel.org
S: Supported
@ -979,7 +979,7 @@ F: Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
F: drivers/iio/adc/ad7606.c
ANALOG DEVICES INC AD7768-1 DRIVER
M: Stefan Popa <stefan.popa@analog.com>
M: Michael Hennerich <Michael.Hennerich@analog.com>
L: linux-iio@vger.kernel.org
S: Supported
W: http://ez.analog.com/community/linux-device-drivers
@ -1040,7 +1040,7 @@ F: Documentation/devicetree/bindings/hwmon/adi,adm1177.yaml
F: drivers/hwmon/adm1177.c
ANALOG DEVICES INC ADP5061 DRIVER
M: Stefan Popa <stefan.popa@analog.com>
M: Michael Hennerich <Michael.Hennerich@analog.com>
L: linux-pm@vger.kernel.org
S: Supported
W: http://ez.analog.com/community/linux-device-drivers
@ -1109,7 +1109,6 @@ F: drivers/iio/amplifiers/hmc425a.c
ANALOG DEVICES INC IIO DRIVERS
M: Lars-Peter Clausen <lars@metafoo.de>
M: Michael Hennerich <Michael.Hennerich@analog.com>
M: Stefan Popa <stefan.popa@analog.com>
S: Supported
W: http://wiki.analog.com/
W: http://ez.analog.com/community/linux-device-drivers
@ -2850,14 +2849,14 @@ M: Nick Kossifidis <mickflemm@gmail.com>
M: Luis Chamberlain <mcgrof@kernel.org>
L: linux-wireless@vger.kernel.org
S: Maintained
W: http://wireless.kernel.org/en/users/Drivers/ath5k
W: https://wireless.wiki.kernel.org/en/users/Drivers/ath5k
F: drivers/net/wireless/ath/ath5k/
ATHEROS ATH6KL WIRELESS DRIVER
M: Kalle Valo <kvalo@codeaurora.org>
L: linux-wireless@vger.kernel.org
S: Supported
W: http://wireless.kernel.org/en/users/Drivers/ath6kl
W: https://wireless.wiki.kernel.org/en/users/Drivers/ath6kl
T: git git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
F: drivers/net/wireless/ath/ath6kl/
@ -3020,7 +3019,7 @@ B43 WIRELESS DRIVER
L: linux-wireless@vger.kernel.org
L: b43-dev@lists.infradead.org
S: Odd Fixes
W: http://wireless.kernel.org/en/users/Drivers/b43
W: https://wireless.wiki.kernel.org/en/users/Drivers/b43
F: drivers/net/wireless/broadcom/b43/
B43LEGACY WIRELESS DRIVER
@ -3028,7 +3027,7 @@ M: Larry Finger <Larry.Finger@lwfinger.net>
L: linux-wireless@vger.kernel.org
L: b43-dev@lists.infradead.org
S: Maintained
W: http://wireless.kernel.org/en/users/Drivers/b43
W: https://wireless.wiki.kernel.org/en/users/Drivers/b43
F: drivers/net/wireless/broadcom/b43legacy/
BACKLIGHT CLASS/SUBSYSTEM
@ -3658,7 +3657,7 @@ L: linux-btrfs@vger.kernel.org
S: Maintained
W: http://btrfs.wiki.kernel.org/
Q: http://patchwork.kernel.org/project/linux-btrfs/list/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git
F: Documentation/filesystems/btrfs.rst
F: fs/btrfs/
F: include/linux/btrfs*
@ -3843,7 +3842,7 @@ CARL9170 LINUX COMMUNITY WIRELESS DRIVER
M: Christian Lamparter <chunkeey@googlemail.com>
L: linux-wireless@vger.kernel.org
S: Maintained
W: http://wireless.kernel.org/en/users/Drivers/carl9170
W: https://wireless.wiki.kernel.org/en/users/Drivers/carl9170
F: drivers/net/wireless/ath/carl9170/
CAVIUM I2C DRIVER
@ -3937,11 +3936,9 @@ F: arch/powerpc/platforms/cell/
CEPH COMMON CODE (LIBCEPH)
M: Ilya Dryomov <idryomov@gmail.com>
M: Jeff Layton <jlayton@kernel.org>
M: Sage Weil <sage@redhat.com>
L: ceph-devel@vger.kernel.org
S: Supported
W: http://ceph.com/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client.git
T: git git://github.com/ceph/ceph-client.git
F: include/linux/ceph/
F: include/linux/crush/
@ -3949,12 +3946,10 @@ F: net/ceph/
CEPH DISTRIBUTED FILE SYSTEM CLIENT (CEPH)
M: Jeff Layton <jlayton@kernel.org>
M: Sage Weil <sage@redhat.com>
M: Ilya Dryomov <idryomov@gmail.com>
L: ceph-devel@vger.kernel.org
S: Supported
W: http://ceph.com/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client.git
T: git git://github.com/ceph/ceph-client.git
F: Documentation/filesystems/ceph.rst
F: fs/ceph/
@ -5176,6 +5171,7 @@ S: Maintained
F: drivers/soc/fsl/dpio
DPAA2 ETHERNET DRIVER
M: Ioana Ciornei <ioana.ciornei@nxp.com>
M: Ioana Radulescu <ruxandra.radulescu@nxp.com>
L: netdev@vger.kernel.org
S: Maintained
@ -5935,9 +5931,9 @@ F: lib/dynamic_debug.c
DYNAMIC INTERRUPT MODERATION
M: Tal Gilboa <talgi@mellanox.com>
S: Maintained
F: Documentation/networking/net_dim.rst
F: include/linux/dim.h
F: lib/dim/
F: Documentation/networking/net_dim.rst
DZ DECSTATION DZ11 SERIAL DRIVER
M: "Maciej W. Rozycki" <macro@linux-mips.org>
@ -7119,9 +7115,10 @@ F: include/uapi/asm-generic/
GENERIC PHY FRAMEWORK
M: Kishon Vijay Abraham I <kishon@ti.com>
M: Vinod Koul <vkoul@kernel.org>
L: linux-kernel@vger.kernel.org
S: Supported
T: git git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy.git
F: Documentation/devicetree/bindings/phy/
F: drivers/phy/
F: include/linux/phy/
@ -7746,11 +7743,6 @@ L: platform-driver-x86@vger.kernel.org
S: Orphan
F: drivers/platform/x86/tc1100-wmi.c
HP100: Driver for HP 10/100 Mbit/s Voice Grade Network Adapter Series
M: Jaroslav Kysela <perex@perex.cz>
S: Obsolete
F: drivers/staging/hp/hp100.*
HPET: High Precision Event Timers driver
M: Clemens Ladisch <clemens@ladisch.de>
S: Maintained
@ -9329,6 +9321,7 @@ M: Christian Borntraeger <borntraeger@de.ibm.com>
M: Janosch Frank <frankja@linux.ibm.com>
R: David Hildenbrand <david@redhat.com>
R: Cornelia Huck <cohuck@redhat.com>
R: Claudio Imbrenda <imbrenda@linux.ibm.com>
L: kvm@vger.kernel.org
S: Supported
W: http://www.ibm.com/developerworks/linux/linux390/
@ -9416,6 +9409,13 @@ F: include/linux/keyctl.h
F: include/uapi/linux/keyctl.h
F: security/keys/
KFIFO
M: Stefani Seibold <stefani@seibold.net>
S: Maintained
F: include/linux/kfifo.h
F: lib/kfifo.c
F: samples/kfifo/
KGDB / KDB /debug_core
M: Jason Wessel <jason.wessel@windriver.com>
M: Daniel Thompson <daniel.thompson@linaro.org>
@ -10067,7 +10067,7 @@ MAC80211
M: Johannes Berg <johannes@sipsolutions.net>
L: linux-wireless@vger.kernel.org
S: Maintained
W: http://wireless.kernel.org/
W: https://wireless.wiki.kernel.org/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git
F: Documentation/networking/mac80211-injection.txt
@ -10697,7 +10697,6 @@ MEDIATEK MT76 WIRELESS LAN DRIVER
M: Felix Fietkau <nbd@nbd.name>
M: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
R: Ryder Lee <ryder.lee@mediatek.com>
R: Roy Luo <royluo@google.com>
L: linux-wireless@vger.kernel.org
S: Maintained
F: drivers/net/wireless/mediatek/mt76/
@ -12648,7 +12647,7 @@ F: fs/orangefs/
ORINOCO DRIVER
L: linux-wireless@vger.kernel.org
S: Orphan
W: http://wireless.kernel.org/en/users/Drivers/orinoco
W: https://wireless.wiki.kernel.org/en/users/Drivers/orinoco
W: http://www.nongnu.org/orinoco/
F: drivers/net/wireless/intersil/orinoco/
@ -12674,7 +12673,7 @@ P54 WIRELESS DRIVER
M: Christian Lamparter <chunkeey@googlemail.com>
L: linux-wireless@vger.kernel.org
S: Maintained
W: http://wireless.kernel.org/en/users/Drivers/p54
W: https://wireless.wiki.kernel.org/en/users/Drivers/p54
F: drivers/net/wireless/intersil/p54/
PACKING
@ -13042,7 +13041,7 @@ F: drivers/pci/controller/pci-xgene-msi.c
PCI NATIVE HOST BRIDGE AND ENDPOINT DRIVERS
M: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
R: Andrew Murray <amurray@thegoodpenguin.co.uk>
R: Rob Herring <robh@kernel.org>
L: linux-pci@vger.kernel.org
S: Supported
Q: http://patchwork.ozlabs.org/project/linux-pci/list/
@ -13595,7 +13594,7 @@ PRISM54 WIRELESS DRIVER
M: Luis Chamberlain <mcgrof@kernel.org>
L: linux-wireless@vger.kernel.org
S: Obsolete
W: http://wireless.kernel.org/en/users/Drivers/p54
W: https://wireless.wiki.kernel.org/en/users/Drivers/p54
F: drivers/net/wireless/intersil/prism54/
PROC FILESYSTEM
@ -13936,7 +13935,7 @@ QUALCOMM ATHEROS ATH10K WIRELESS DRIVER
M: Kalle Valo <kvalo@codeaurora.org>
L: ath10k@lists.infradead.org
S: Supported
W: http://wireless.kernel.org/en/users/Drivers/ath10k
W: https://wireless.wiki.kernel.org/en/users/Drivers/ath10k
T: git git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
F: drivers/net/wireless/ath/ath10k/
@ -13951,7 +13950,7 @@ QUALCOMM ATHEROS ATH9K WIRELESS DRIVER
M: QCA ath9k Development <ath9k-devel@qca.qualcomm.com>
L: linux-wireless@vger.kernel.org
S: Supported
W: http://wireless.kernel.org/en/users/Drivers/ath9k
W: https://wireless.wiki.kernel.org/en/users/Drivers/ath9k
F: drivers/net/wireless/ath/ath9k/
QUALCOMM CAMERA SUBSYSTEM DRIVER
@ -14048,13 +14047,12 @@ QUALCOMM WCN36XX WIRELESS DRIVER
M: Kalle Valo <kvalo@codeaurora.org>
L: wcn36xx@lists.infradead.org
S: Supported
W: http://wireless.kernel.org/en/users/Drivers/wcn36xx
W: https://wireless.wiki.kernel.org/en/users/Drivers/wcn36xx
T: git git://github.com/KrasnikovEugene/wcn36xx.git
F: drivers/net/wireless/ath/wcn36xx/
QUANTENNA QTNFMAC WIRELESS DRIVER
M: Igor Mitsyanko <imitsyanko@quantenna.com>
M: Avinash Patil <avinashp@quantenna.com>
M: Sergey Matyukevich <smatyukevich@quantenna.com>
L: linux-wireless@vger.kernel.org
S: Maintained
@ -14096,12 +14094,10 @@ F: drivers/media/radio/radio-tea5777.c
RADOS BLOCK DEVICE (RBD)
M: Ilya Dryomov <idryomov@gmail.com>
M: Sage Weil <sage@redhat.com>
R: Dongsheng Yang <dongsheng.yang@easystack.cn>
L: ceph-devel@vger.kernel.org
S: Supported
W: http://ceph.com/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client.git
T: git git://github.com/ceph/ceph-client.git
F: Documentation/ABI/testing/sysfs-bus-rbd
F: drivers/block/rbd.c
@ -14276,7 +14272,7 @@ REALTEK WIRELESS DRIVER (rtlwifi family)
M: Ping-Ke Shih <pkshih@realtek.com>
L: linux-wireless@vger.kernel.org
S: Maintained
W: http://wireless.kernel.org/
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/
@ -14411,7 +14407,7 @@ RFKILL
M: Johannes Berg <johannes@sipsolutions.net>
L: linux-wireless@vger.kernel.org
S: Maintained
W: http://wireless.kernel.org/
W: https://wireless.wiki.kernel.org/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git
F: Documentation/ABI/stable/sysfs-class-rfkill
@ -14560,7 +14556,7 @@ F: drivers/media/dvb-frontends/rtl2832_sdr*
RTL8180 WIRELESS DRIVER
L: linux-wireless@vger.kernel.org
S: Orphan
W: http://wireless.kernel.org/
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/rtl818x/rtl8180/
@ -14570,7 +14566,7 @@ M: Hin-Tak Leung <htl10@users.sourceforge.net>
M: Larry Finger <Larry.Finger@lwfinger.net>
L: linux-wireless@vger.kernel.org
S: Maintained
W: http://wireless.kernel.org/
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/rtl818x/rtl8187/
@ -16925,8 +16921,8 @@ F: drivers/media/platform/ti-vpe/
TI WILINK WIRELESS DRIVERS
L: linux-wireless@vger.kernel.org
S: Orphan
W: http://wireless.kernel.org/en/users/Drivers/wl12xx
W: http://wireless.kernel.org/en/users/Drivers/wl1251
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/
F: include/linux/wl12xx.h
@ -18208,7 +18204,7 @@ M: Maya Erez <merez@codeaurora.org>
L: linux-wireless@vger.kernel.org
L: wil6210@qti.qualcomm.com
S: Supported
W: http://wireless.kernel.org/en/users/Drivers/wil6210
W: https://wireless.wiki.kernel.org/en/users/Drivers/wil6210
F: drivers/net/wireless/ath/wil6210/
WIMAX STACK

17
Makefile
View File

@ -2,7 +2,7 @@
VERSION = 5
PATCHLEVEL = 7
SUBLEVEL = 0
EXTRAVERSION = -rc2
EXTRAVERSION = -rc5
NAME = Kleptomaniac Octopus
# *DOCUMENTATION*
@ -729,10 +729,6 @@ else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
KBUILD_CFLAGS += -Os
endif
ifdef CONFIG_CC_DISABLE_WARN_MAYBE_UNINITIALIZED
KBUILD_CFLAGS += -Wno-maybe-uninitialized
endif
# Tell gcc to never replace conditional load with a non-conditional one
KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0)
KBUILD_CFLAGS += $(call cc-option,-fno-allow-store-data-races)
@ -881,6 +877,17 @@ KBUILD_CFLAGS += -Wno-pointer-sign
# disable stringop warnings in gcc 8+
KBUILD_CFLAGS += $(call cc-disable-warning, stringop-truncation)
# We'll want to enable this eventually, but it's not going away for 5.7 at least
KBUILD_CFLAGS += $(call cc-disable-warning, zero-length-bounds)
KBUILD_CFLAGS += $(call cc-disable-warning, array-bounds)
KBUILD_CFLAGS += $(call cc-disable-warning, stringop-overflow)
# Another good warning that we'll want to enable eventually
KBUILD_CFLAGS += $(call cc-disable-warning, restrict)
# Enabled with W=2, disabled by default as noisy
KBUILD_CFLAGS += $(call cc-disable-warning, maybe-uninitialized)
# disable invalid "can't wrap" optimizations for signed / pointers
KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)

5
arch/arc/include/asm/module.h
View File

@ -3,7 +3,6 @@
* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
*
* Amit Bhor, Sameer Dhavale: Codito Technologies 2004
*/
#ifndef _ASM_ARC_MODULE_H
@ -19,8 +18,4 @@ struct mod_arch_specific {
const char *secstr;
};
#define MODULE_PROC_FAMILY "ARC700"
#define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY
#endif /* _ASM_ARC_MODULE_H */

8
arch/arc/include/asm/vermagic.h Normal file
View File

@ -0,0 +1,8 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_VERMAGIC_H
#define _ASM_VERMAGIC_H
#define MODULE_ARCH_VERMAGIC "ARC700"
#endif /* _ASM_VERMAGIC_H */

3
arch/arm/boot/dts/bcm2835-rpi.dtsi
View File

@ -14,6 +14,9 @@ act {
soc {
firmware: firmware {
compatible = "raspberrypi,bcm2835-firmware", "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
mboxes = <&mailbox>;
dma-ranges;
};

1
arch/arm/boot/dts/bcm283x.dtsi
View File

@ -372,6 +372,7 @@ dsi0: dsi@7e209000 {
"dsi0_ddr2",
"dsi0_ddr";
status = "disabled";
};
aux: aux@7e215000 {

5
arch/arm/boot/dts/omap3-n950-n9.dtsi
View File

@ -341,6 +341,11 @@ &mmc3 {
status = "disabled";
};
/* RNG not directly accessible on N950/N9. */
&rng_target {
status = "disabled";
};
&usb_otg_hs {
interface-type = <0>;
usb-phy = <&usb2_phy>;

10
arch/arm/crypto/chacha-glue.c
View File

@ -91,9 +91,17 @@ void chacha_crypt_arch(u32 *state, u8 *dst, const u8 *src, unsigned int bytes,
return;
}
do {
unsigned int todo = min_t(unsigned int, bytes, SZ_4K);
kernel_neon_begin();
chacha_doneon(state, dst, src, bytes, nrounds);
chacha_doneon(state, dst, src, todo, nrounds);
kernel_neon_end();
bytes -= todo;
src += todo;
dst += todo;
} while (bytes);
}
EXPORT_SYMBOL(chacha_crypt_arch);

2
arch/arm/crypto/nhpoly1305-neon-glue.c
View File

@ -30,7 +30,7 @@ static int nhpoly1305_neon_update(struct shash_desc *desc,
return crypto_nhpoly1305_update(desc, src, srclen);
do {
unsigned int n = min_t(unsigned int, srclen, PAGE_SIZE);
unsigned int n = min_t(unsigned int, srclen, SZ_4K);
kernel_neon_begin();
crypto_nhpoly1305_update_helper(desc, src, n, _nh_neon);

11
arch/arm/crypto/poly1305-glue.c
View File

@ -160,13 +160,20 @@ void poly1305_update_arch(struct poly1305_desc_ctx *dctx, const u8 *src,
unsigned int len = round_down(nbytes, POLY1305_BLOCK_SIZE);
if (static_branch_likely(&have_neon) && do_neon) {
do {
unsigned int todo = min_t(unsigned int, len, SZ_4K);
kernel_neon_begin();
poly1305_blocks_neon(&dctx->h, src, len, 1);
poly1305_blocks_neon(&dctx->h, src, todo, 1);
kernel_neon_end();
len -= todo;
src += todo;
} while (len);
} else {
poly1305_blocks_arm(&dctx->h, src, len, 1);
}
src += len;
}
nbytes %= POLY1305_BLOCK_SIZE;
}

7
arch/arm/include/asm/futex.h
View File

@ -165,7 +165,12 @@ arch_futex_atomic_op_inuser(int op, int oparg, int *oval, u32 __user *uaddr)
preempt_enable();
#endif
if (!ret)
/*
* Store unconditionally. If ret != 0 the extra store is the least
* of the worries but GCC cannot figure out that __futex_atomic_op()
* is either setting ret to -EFAULT or storing the old value in
* oldval which results in a uninitialized warning at the call site.
*/
*oval = oldval;
return ret;

24
arch/arm/include/asm/module.h
View File

@ -37,30 +37,6 @@ struct mod_arch_specific {
struct module;
u32 get_module_plt(struct module *mod, unsigned long loc, Elf32_Addr val);
/*
* Add the ARM architecture version to the version magic string
*/
#define MODULE_ARCH_VERMAGIC_ARMVSN "ARMv" __stringify(__LINUX_ARM_ARCH__) " "
/* Add __virt_to_phys patching state as well */
#ifdef CONFIG_ARM_PATCH_PHYS_VIRT
#define MODULE_ARCH_VERMAGIC_P2V "p2v8 "
#else
#define MODULE_ARCH_VERMAGIC_P2V ""
#endif
/* Add instruction set architecture tag to distinguish ARM/Thumb kernels */
#ifdef CONFIG_THUMB2_KERNEL
#define MODULE_ARCH_VERMAGIC_ARMTHUMB "thumb2 "
#else
#define MODULE_ARCH_VERMAGIC_ARMTHUMB ""
#endif
#define MODULE_ARCH_VERMAGIC \
MODULE_ARCH_VERMAGIC_ARMVSN \
MODULE_ARCH_VERMAGIC_ARMTHUMB \
MODULE_ARCH_VERMAGIC_P2V
#ifdef CONFIG_THUMB2_KERNEL
#define HAVE_ARCH_KALLSYMS_SYMBOL_VALUE
static inline unsigned long kallsyms_symbol_value(const Elf_Sym *sym)

31
arch/arm/include/asm/vermagic.h Normal file
View File

@ -0,0 +1,31 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_VERMAGIC_H
#define _ASM_VERMAGIC_H
#include <linux/stringify.h>
/*
* Add the ARM architecture version to the version magic string
*/
#define MODULE_ARCH_VERMAGIC_ARMVSN "ARMv" __stringify(__LINUX_ARM_ARCH__) " "
/* Add __virt_to_phys patching state as well */
#ifdef CONFIG_ARM_PATCH_PHYS_VIRT
#define MODULE_ARCH_VERMAGIC_P2V "p2v8 "
#else
#define MODULE_ARCH_VERMAGIC_P2V ""
#endif
/* Add instruction set architecture tag to distinguish ARM/Thumb kernels */
#ifdef CONFIG_THUMB2_KERNEL
#define MODULE_ARCH_VERMAGIC_ARMTHUMB "thumb2 "
#else
#define MODULE_ARCH_VERMAGIC_ARMTHUMB ""
#endif
#define MODULE_ARCH_VERMAGIC \
MODULE_ARCH_VERMAGIC_ARMVSN \
MODULE_ARCH_VERMAGIC_ARMTHUMB \
MODULE_ARCH_VERMAGIC_P2V
#endif /* _ASM_VERMAGIC_H */

2
arch/arm/mach-imx/Makefile
View File

@ -91,8 +91,10 @@ AFLAGS_suspend-imx6.o :=-Wa,-march=armv7-a
obj-$(CONFIG_SOC_IMX6) += suspend-imx6.o
obj-$(CONFIG_SOC_IMX53) += suspend-imx53.o
endif
ifeq ($(CONFIG_ARM_CPU_SUSPEND),y)
AFLAGS_resume-imx6.o :=-Wa,-march=armv7-a
obj-$(CONFIG_SOC_IMX6) += resume-imx6.o
endif
obj-$(CONFIG_SOC_IMX6) += pm-imx6.o
obj-$(CONFIG_SOC_IMX1) += mach-imx1.o

10
arch/arm64/crypto/chacha-neon-glue.c
View File

@ -87,9 +87,17 @@ void chacha_crypt_arch(u32 *state, u8 *dst, const u8 *src, unsigned int bytes,
!crypto_simd_usable())
return chacha_crypt_generic(state, dst, src, bytes, nrounds);
do {
unsigned int todo = min_t(unsigned int, bytes, SZ_4K);
kernel_neon_begin();
chacha_doneon(state, dst, src, bytes, nrounds);
chacha_doneon(state, dst, src, todo, nrounds);
kernel_neon_end();
bytes -= todo;
src += todo;
dst += todo;
} while (bytes);
}
EXPORT_SYMBOL(chacha_crypt_arch);

2
arch/arm64/crypto/nhpoly1305-neon-glue.c
View File

@ -30,7 +30,7 @@ static int nhpoly1305_neon_update(struct shash_desc *desc,
return crypto_nhpoly1305_update(desc, src, srclen);
do {
unsigned int n = min_t(unsigned int, srclen, PAGE_SIZE);
unsigned int n = min_t(unsigned int, srclen, SZ_4K);
kernel_neon_begin();
crypto_nhpoly1305_update_helper(desc, src, n, _nh_neon);

11
arch/arm64/crypto/poly1305-glue.c
View File

@ -143,13 +143,20 @@ void poly1305_update_arch(struct poly1305_desc_ctx *dctx, const u8 *src,
unsigned int len = round_down(nbytes, POLY1305_BLOCK_SIZE);
if (static_branch_likely(&have_neon) && crypto_simd_usable()) {
do {
unsigned int todo = min_t(unsigned int, len, SZ_4K);
kernel_neon_begin();
poly1305_blocks_neon(&dctx->h, src, len, 1);
poly1305_blocks_neon(&dctx->h, src, todo, 1);
kernel_neon_end();
len -= todo;
src += todo;
} while (len);
} else {
poly1305_blocks(&dctx->h, src, len, 1);
}
src += len;
}
nbytes %= POLY1305_BLOCK_SIZE;
}

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

@ -7,8 +7,6 @@
#include <asm-generic/module.h>
#define MODULE_ARCH_VERMAGIC "aarch64"
#ifdef CONFIG_ARM64_MODULE_PLTS
struct mod_plt_sec {
int plt_shndx;

9
arch/arm64/include/asm/pointer_auth.h
View File

@ -47,7 +47,7 @@ static inline void ptrauth_keys_init_user(struct ptrauth_keys_user *keys)
get_random_bytes(&keys->apga, sizeof(keys->apga));
}
#define __ptrauth_key_install(k, v) \
#define __ptrauth_key_install_nosync(k, v) \
do { \
struct ptrauth_key __pki_v = (v); \
write_sysreg_s(__pki_v.lo, SYS_ ## k ## KEYLO_EL1); \
@ -62,8 +62,11 @@ static __always_inline void ptrauth_keys_init_kernel(struct ptrauth_keys_kernel
static __always_inline void ptrauth_keys_switch_kernel(struct ptrauth_keys_kernel *keys)
{
if (system_supports_address_auth())
__ptrauth_key_install(APIA, keys->apia);
if (!system_supports_address_auth())
return;
__ptrauth_key_install_nosync(APIA, keys->apia);
isb();
}
extern int ptrauth_prctl_reset_keys(struct task_struct *tsk, unsigned long arg);

10
arch/arm64/include/asm/vermagic.h Normal file
View File

@ -0,0 +1,10 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2012 ARM Ltd.
*/
#ifndef _ASM_VERMAGIC_H
#define _ASM_VERMAGIC_H
#define MODULE_ARCH_VERMAGIC "aarch64"
#endif /* _ASM_VERMAGIC_H */

2
arch/arm64/kernel/vdso/Makefile
View File

@ -32,7 +32,7 @@ UBSAN_SANITIZE := n
OBJECT_FILES_NON_STANDARD := y
KCOV_INSTRUMENT := n
CFLAGS_vgettimeofday.o = -O2 -mcmodel=tiny
CFLAGS_vgettimeofday.o = -O2 -mcmodel=tiny -fasynchronous-unwind-tables
ifneq ($(c-gettimeofday-y),)
CFLAGS_vgettimeofday.o += -include $(c-gettimeofday-y)

7
arch/arm64/kvm/guest.c
View File

@ -200,6 +200,13 @@ static int set_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
}
memcpy((u32 *)regs + off, valp, KVM_REG_SIZE(reg->id));
if (*vcpu_cpsr(vcpu) & PSR_MODE32_BIT) {
int i;
for (i = 0; i < 16; i++)
*vcpu_reg32(vcpu, i) = (u32)*vcpu_reg32(vcpu, i);
}
out:
return err;
}

23
arch/arm64/kvm/hyp/entry.S
View File

@ -18,6 +18,7 @@
#define CPU_GP_REG_OFFSET(x) (CPU_GP_REGS + x)
#define CPU_XREG_OFFSET(x) CPU_GP_REG_OFFSET(CPU_USER_PT_REGS + 8*x)
#define CPU_SP_EL0_OFFSET (CPU_XREG_OFFSET(30) + 8)
.text
.pushsection .hyp.text, "ax"
@ -47,6 +48,16 @@
ldp x29, lr, [\ctxt, #CPU_XREG_OFFSET(29)]
.endm
.macro save_sp_el0 ctxt, tmp
mrs \tmp, sp_el0
str \tmp, [\ctxt, #CPU_SP_EL0_OFFSET]
.endm
.macro restore_sp_el0 ctxt, tmp
ldr \tmp, [\ctxt, #CPU_SP_EL0_OFFSET]
msr sp_el0, \tmp
.endm
/*
* u64 __guest_enter(struct kvm_vcpu *vcpu,
* struct kvm_cpu_context *host_ctxt);
@ -60,6 +71,9 @@ SYM_FUNC_START(__guest_enter)
// Store the host regs
save_callee_saved_regs x1
// Save the host's sp_el0
save_sp_el0 x1, x2
// Now the host state is stored if we have a pending RAS SError it must
// affect the host. If any asynchronous exception is pending we defer
// the guest entry. The DSB isn't necessary before v8.2 as any SError
@ -83,6 +97,9 @@ alternative_else_nop_endif
// when this feature is enabled for kernel code.
ptrauth_switch_to_guest x29, x0, x1, x2
// Restore the guest's sp_el0
restore_sp_el0 x29, x0
// Restore guest regs x0-x17
ldp x0, x1, [x29, #CPU_XREG_OFFSET(0)]
ldp x2, x3, [x29, #CPU_XREG_OFFSET(2)]
@ -130,6 +147,9 @@ SYM_INNER_LABEL(__guest_exit, SYM_L_GLOBAL)
// Store the guest regs x18-x29, lr
save_callee_saved_regs x1
// Store the guest's sp_el0
save_sp_el0 x1, x2
get_host_ctxt x2, x3
// Macro ptrauth_switch_to_guest format:
@ -139,6 +159,9 @@ SYM_INNER_LABEL(__guest_exit, SYM_L_GLOBAL)
// when this feature is enabled for kernel code.
ptrauth_switch_to_host x1, x2, x3, x4, x5
// Restore the hosts's sp_el0
restore_sp_el0 x2, x3
// Now restore the host regs
restore_callee_saved_regs x2

1
arch/arm64/kvm/hyp/hyp-entry.S
View File

@ -198,7 +198,6 @@ SYM_CODE_END(__hyp_panic)
.macro invalid_vector label, target = __hyp_panic
.align 2
SYM_CODE_START(\label)
\label:
b \target
SYM_CODE_END(\label)
.endm

17
arch/arm64/kvm/hyp/sysreg-sr.c
View File

@ -15,8 +15,9 @@
/*
* Non-VHE: Both host and guest must save everything.
*
* VHE: Host and guest must save mdscr_el1 and sp_el0 (and the PC and pstate,
* which are handled as part of the el2 return state) on every switch.
* VHE: Host and guest must save mdscr_el1 and sp_el0 (and the PC and
* pstate, which are handled as part of the el2 return state) on every
* switch (sp_el0 is being dealt with in the assembly code).
* tpidr_el0 and tpidrro_el0 only need to be switched when going
* to host userspace or a different VCPU. EL1 registers only need to be
* switched when potentially going to run a different VCPU. The latter two
@ -26,12 +27,6 @@
static void __hyp_text __sysreg_save_common_state(struct kvm_cpu_context *ctxt)
{
ctxt->sys_regs[MDSCR_EL1] = read_sysreg(mdscr_el1);
/*
* The host arm64 Linux uses sp_el0 to point to 'current' and it must
* therefore be saved/restored on every entry/exit to/from the guest.
*/
ctxt->gp_regs.regs.sp = read_sysreg(sp_el0);
}
static void __hyp_text __sysreg_save_user_state(struct kvm_cpu_context *ctxt)
@ -99,12 +94,6 @@ NOKPROBE_SYMBOL(sysreg_save_guest_state_vhe);
static void __hyp_text __sysreg_restore_common_state(struct kvm_cpu_context *ctxt)
{
write_sysreg(ctxt->sys_regs[MDSCR_EL1], mdscr_el1);
/*
* The host arm64 Linux uses sp_el0 to point to 'current' and it must
* therefore be saved/restored on every entry/exit to/from the guest.
*/
write_sysreg(ctxt->gp_regs.regs.sp, sp_el0);
}
static void __hyp_text __sysreg_restore_user_state(struct kvm_cpu_context *ctxt)

2
arch/arm64/mm/hugetlbpage.c
View File

@ -230,6 +230,8 @@ pte_t *huge_pte_alloc(struct mm_struct *mm,
ptep = (pte_t *)pudp;
} else if (sz == (CONT_PTE_SIZE)) {
pmdp = pmd_alloc(mm, pudp, addr);
if (!pmdp)
return NULL;
WARN_ON(addr & (sz - 1));
/*

2
arch/h8300/kernel/.gitignore vendored Normal file
View File

@ -0,0 +1,2 @@
# SPDX-License-Identifier: GPL-2.0-only
vmlinux.lds

8
arch/hexagon/include/asm/module.h → arch/hexagon/include/asm/vermagic.h
View File

@ -3,11 +3,11 @@
* Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
*/
#ifndef _ASM_MODULE_H
#define _ASM_MODULE_H
#ifndef _ASM_VERMAGIC_H
#define _ASM_VERMAGIC_H
#include <asm-generic/module.h>
#include <linux/stringify.h>
#define MODULE_ARCH_VERMAGIC __stringify(PROCESSOR_MODEL_NAME) " "
#endif
#endif /* _ASM_VERMAGIC_H */

4
arch/ia64/include/asm/module.h
View File

@ -26,10 +26,6 @@ struct mod_arch_specific {
unsigned int next_got_entry; /* index of next available got entry */
};
#define MODULE_PROC_FAMILY "ia64"
#define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY \
"gcc-" __stringify(__GNUC__) "." __stringify(__GNUC_MINOR__)
#define ARCH_SHF_SMALL SHF_IA_64_SHORT
#endif /* _ASM_IA64_MODULE_H */

15
arch/ia64/include/asm/vermagic.h Normal file
View File

@ -0,0 +1,15 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2003 Hewlett-Packard Co
* David Mosberger-Tang <davidm@hpl.hp.com>
*/
#ifndef _ASM_VERMAGIC_H
#define _ASM_VERMAGIC_H
#include <linux/stringify.h>
#define MODULE_ARCH_VERMAGIC "ia64" \
"gcc-" __stringify(__GNUC__) "." __stringify(__GNUC_MINOR__)
#endif /* _ASM_VERMAGIC_H */

61
arch/mips/include/asm/module.h
View File

@ -83,65 +83,4 @@ search_module_dbetables(unsigned long addr)
}
#endif
#ifdef CONFIG_CPU_BMIPS
#define MODULE_PROC_FAMILY "BMIPS "
#elif defined CONFIG_CPU_MIPS32_R1
#define MODULE_PROC_FAMILY "MIPS32_R1 "
#elif defined CONFIG_CPU_MIPS32_R2
#define MODULE_PROC_FAMILY "MIPS32_R2 "
#elif defined CONFIG_CPU_MIPS32_R6
#define MODULE_PROC_FAMILY "MIPS32_R6 "
#elif defined CONFIG_CPU_MIPS64_R1
#define MODULE_PROC_FAMILY "MIPS64_R1 "
#elif defined CONFIG_CPU_MIPS64_R2
#define MODULE_PROC_FAMILY "MIPS64_R2 "
#elif defined CONFIG_CPU_MIPS64_R6
#define MODULE_PROC_FAMILY "MIPS64_R6 "
#elif defined CONFIG_CPU_R3000
#define MODULE_PROC_FAMILY "R3000 "
#elif defined CONFIG_CPU_TX39XX
#define MODULE_PROC_FAMILY "TX39XX "
#elif defined CONFIG_CPU_VR41XX
#define MODULE_PROC_FAMILY "VR41XX "
#elif defined CONFIG_CPU_R4X00
#define MODULE_PROC_FAMILY "R4X00 "
#elif defined CONFIG_CPU_TX49XX
#define MODULE_PROC_FAMILY "TX49XX "
#elif defined CONFIG_CPU_R5000
#define MODULE_PROC_FAMILY "R5000 "
#elif defined CONFIG_CPU_R5500
#define MODULE_PROC_FAMILY "R5500 "
#elif defined CONFIG_CPU_NEVADA
#define MODULE_PROC_FAMILY "NEVADA "
#elif defined CONFIG_CPU_R10000
#define MODULE_PROC_FAMILY "R10000 "
#elif defined CONFIG_CPU_RM7000
#define MODULE_PROC_FAMILY "RM7000 "
#elif defined CONFIG_CPU_SB1
#define MODULE_PROC_FAMILY "SB1 "
#elif defined CONFIG_CPU_LOONGSON32
#define MODULE_PROC_FAMILY "LOONGSON32 "
#elif defined CONFIG_CPU_LOONGSON2EF
#define MODULE_PROC_FAMILY "LOONGSON2EF "
#elif defined CONFIG_CPU_LOONGSON64
#define MODULE_PROC_FAMILY "LOONGSON64 "
#elif defined CONFIG_CPU_CAVIUM_OCTEON
#define MODULE_PROC_FAMILY "OCTEON "
#elif defined CONFIG_CPU_XLR
#define MODULE_PROC_FAMILY "XLR "
#elif defined CONFIG_CPU_XLP
#define MODULE_PROC_FAMILY "XLP "
#else
#error MODULE_PROC_FAMILY undefined for your processor configuration
#endif
#ifdef CONFIG_32BIT
#define MODULE_KERNEL_TYPE "32BIT "
#elif defined CONFIG_64BIT
#define MODULE_KERNEL_TYPE "64BIT "
#endif
#define MODULE_ARCH_VERMAGIC \
MODULE_PROC_FAMILY MODULE_KERNEL_TYPE
#endif /* _ASM_MODULE_H */

66
arch/mips/include/asm/vermagic.h Normal file
View File

@ -0,0 +1,66 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_VERMAGIC_H
#define _ASM_VERMAGIC_H
#ifdef CONFIG_CPU_BMIPS
#define MODULE_PROC_FAMILY "BMIPS "
#elif defined CONFIG_CPU_MIPS32_R1
#define MODULE_PROC_FAMILY "MIPS32_R1 "
#elif defined CONFIG_CPU_MIPS32_R2
#define MODULE_PROC_FAMILY "MIPS32_R2 "
#elif defined CONFIG_CPU_MIPS32_R6
#define MODULE_PROC_FAMILY "MIPS32_R6 "
#elif defined CONFIG_CPU_MIPS64_R1
#define MODULE_PROC_FAMILY "MIPS64_R1 "
#elif defined CONFIG_CPU_MIPS64_R2
#define MODULE_PROC_FAMILY "MIPS64_R2 "
#elif defined CONFIG_CPU_MIPS64_R6
#define MODULE_PROC_FAMILY "MIPS64_R6 "
#elif defined CONFIG_CPU_R3000
#define MODULE_PROC_FAMILY "R3000 "
#elif defined CONFIG_CPU_TX39XX
#define MODULE_PROC_FAMILY "TX39XX "
#elif defined CONFIG_CPU_VR41XX
#define MODULE_PROC_FAMILY "VR41XX "
#elif defined CONFIG_CPU_R4X00
#define MODULE_PROC_FAMILY "R4X00 "
#elif defined CONFIG_CPU_TX49XX
#define MODULE_PROC_FAMILY "TX49XX "
#elif defined CONFIG_CPU_R5000
#define MODULE_PROC_FAMILY "R5000 "
#elif defined CONFIG_CPU_R5500
#define MODULE_PROC_FAMILY "R5500 "
#elif defined CONFIG_CPU_NEVADA
#define MODULE_PROC_FAMILY "NEVADA "
#elif defined CONFIG_CPU_R10000
#define MODULE_PROC_FAMILY "R10000 "
#elif defined CONFIG_CPU_RM7000
#define MODULE_PROC_FAMILY "RM7000 "
#elif defined CONFIG_CPU_SB1
#define MODULE_PROC_FAMILY "SB1 "
#elif defined CONFIG_CPU_LOONGSON32
#define MODULE_PROC_FAMILY "LOONGSON32 "
#elif defined CONFIG_CPU_LOONGSON2EF
#define MODULE_PROC_FAMILY "LOONGSON2EF "
#elif defined CONFIG_CPU_LOONGSON64
#define MODULE_PROC_FAMILY "LOONGSON64 "
#elif defined CONFIG_CPU_CAVIUM_OCTEON
#define MODULE_PROC_FAMILY "OCTEON "
#elif defined CONFIG_CPU_XLR
#define MODULE_PROC_FAMILY "XLR "
#elif defined CONFIG_CPU_XLP
#define MODULE_PROC_FAMILY "XLP "
#else
#error MODULE_PROC_FAMILY undefined for your processor configuration
#endif
#ifdef CONFIG_32BIT
#define MODULE_KERNEL_TYPE "32BIT "
#elif defined CONFIG_64BIT
#define MODULE_KERNEL_TYPE "64BIT "
#endif
#define MODULE_ARCH_VERMAGIC \
MODULE_PROC_FAMILY MODULE_KERNEL_TYPE
#endif /* _ASM_VERMAGIC_H */

8
arch/nds32/include/asm/module.h → arch/nds32/include/asm/vermagic.h
View File

@ -1,11 +1,9 @@
/* SPDX-License-Identifier: GPL-2.0 */
// Copyright (C) 2005-2017 Andes Technology Corporation
#ifndef _ASM_NDS32_MODULE_H
#define _ASM_NDS32_MODULE_H
#include <asm-generic/module.h>
#ifndef _ASM_VERMAGIC_H
#define _ASM_VERMAGIC_H
#define MODULE_ARCH_VERMAGIC "NDS32v3"
#endif /* _ASM_NDS32_MODULE_H */
#endif /* _ASM_VERMAGIC_H */

18
arch/powerpc/include/asm/module.h
View File

@ -3,28 +3,10 @@
#define _ASM_POWERPC_MODULE_H
#ifdef __KERNEL__
/*
*/
#include <linux/list.h>
#include <asm/bug.h>
#include <asm-generic/module.h>
#ifdef CONFIG_MPROFILE_KERNEL
#define MODULE_ARCH_VERMAGIC_FTRACE "mprofile-kernel "
#else
#define MODULE_ARCH_VERMAGIC_FTRACE ""
#endif
#ifdef CONFIG_RELOCATABLE
#define MODULE_ARCH_VERMAGIC_RELOCATABLE "relocatable "
#else
#define MODULE_ARCH_VERMAGIC_RELOCATABLE ""
#endif
#define MODULE_ARCH_VERMAGIC MODULE_ARCH_VERMAGIC_FTRACE MODULE_ARCH_VERMAGIC_RELOCATABLE
#ifndef __powerpc64__
/*
* Thanks to Paul M for explaining this.

20
arch/powerpc/include/asm/vermagic.h Normal file
View File

@ -0,0 +1,20 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_VERMAGIC_H
#define _ASM_VERMAGIC_H
#ifdef CONFIG_MPROFILE_KERNEL
#define MODULE_ARCH_VERMAGIC_FTRACE "mprofile-kernel "
#else
#define MODULE_ARCH_VERMAGIC_FTRACE ""
#endif
#ifdef CONFIG_RELOCATABLE
#define MODULE_ARCH_VERMAGIC_RELOCATABLE "relocatable "
#else
#define MODULE_ARCH_VERMAGIC_RELOCATABLE ""
#endif
#define MODULE_ARCH_VERMAGIC \
MODULE_ARCH_VERMAGIC_FTRACE MODULE_ARCH_VERMAGIC_RELOCATABLE
#endif /* _ASM_VERMAGIC_H */

2
arch/powerpc/kernel/entry_32.S
View File

@ -732,7 +732,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_SPE)
stw r10,_CCR(r1)
stw r1,KSP(r3) /* Set old stack pointer */
kuap_check r2, r4
kuap_check r2, r0
#ifdef CONFIG_SMP
/* We need a sync somewhere here to make sure that if the
* previous task gets rescheduled on another CPU, it sees all

2
arch/powerpc/kernel/setup_64.c
View File

@ -534,6 +534,8 @@ static bool __init parse_cache_info(struct device_node *np,
lsizep = of_get_property(np, propnames[3], NULL);
if (bsizep == NULL)
bsizep = lsizep;
if (lsizep == NULL)
lsizep = bsizep;
if (lsizep != NULL)
lsize = be32_to_cpu(*lsizep);
if (bsizep != NULL)

1
arch/powerpc/kernel/vmlinux.lds.S
View File

@ -90,6 +90,7 @@ SECTIONS
#ifdef CONFIG_PPC64
*(.tramp.ftrace.text);
#endif
NOINSTR_TEXT
SCHED_TEXT
CPUIDLE_TEXT
LOCK_TEXT

9
arch/powerpc/kvm/book3s_64_mmu_hv.c
View File

@ -604,18 +604,19 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
*/
local_irq_disable();
ptep = __find_linux_pte(vcpu->arch.pgdir, hva, NULL, &shift);
pte = __pte(0);
if (ptep)
pte = *ptep;
local_irq_enable();
/*
* If the PTE disappeared temporarily due to a THP
* collapse, just return and let the guest try again.
*/
if (!ptep) {
local_irq_enable();
if (!pte_present(pte)) {
if (page)
put_page(page);
return RESUME_GUEST;
}
pte = *ptep;
local_irq_enable();
hpa = pte_pfn(pte) << PAGE_SHIFT;
pte_size = PAGE_SIZE;
if (shift)

9
arch/powerpc/kvm/book3s_64_mmu_radix.c
View File

@ -815,18 +815,19 @@ int kvmppc_book3s_instantiate_page(struct kvm_vcpu *vcpu,
*/
local_irq_disable();
ptep = __find_linux_pte(vcpu->arch.pgdir, hva, NULL, &shift);
pte = __pte(0);
if (ptep)
pte = *ptep;
local_irq_enable();
/*
* If the PTE disappeared temporarily due to a THP
* collapse, just return and let the guest try again.
*/
if (!ptep) {
local_irq_enable();
if (!pte_present(pte)) {
if (page)
put_page(page);
return RESUME_GUEST;
}
pte = *ptep;
local_irq_enable();
/* If we're logging dirty pages, always map single pages */
large_enable = !(memslot->flags & KVM_MEM_LOG_DIRTY_PAGES);

1
arch/powerpc/kvm/powerpc.c
View File

@ -521,6 +521,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_IOEVENTFD:
case KVM_CAP_DEVICE_CTRL:
case KVM_CAP_IMMEDIATE_EXIT:
case KVM_CAP_SET_GUEST_DEBUG:
r = 1;
break;
case KVM_CAP_PPC_GUEST_DEBUG_SSTEP:

3
arch/powerpc/mm/nohash/8xx.c
View File

@ -185,6 +185,7 @@ void mmu_mark_initmem_nx(void)
mmu_mapin_ram_chunk(etext8, einittext8, PAGE_KERNEL);
}
}
_tlbil_all();
}
#ifdef CONFIG_STRICT_KERNEL_RWX
@ -199,6 +200,8 @@ void mmu_mark_rodata_ro(void)
~(LARGE_PAGE_SIZE_8M - 1)));
mmu_patch_addis(&patch__dtlbmiss_romem_top, -__pa(_sinittext));
_tlbil_all();
/* Update page tables for PTDUMP and BDI */
mmu_mapin_ram_chunk(0, sinittext, __pgprot(0));
mmu_mapin_ram_chunk(0, etext, PAGE_KERNEL_ROX);

2
arch/powerpc/platforms/Kconfig.cputype
View File

@ -397,7 +397,7 @@ config PPC_KUAP
config PPC_KUAP_DEBUG
bool "Extra debugging for Kernel Userspace Access Protection"
depends on PPC_KUAP && (PPC_RADIX_MMU || PPC_32)
depends on PPC_KUAP && (PPC_RADIX_MMU || PPC32)
help
Add extra debugging for Kernel Userspace Access Protection (KUAP)
If you're unsure, say N.

2
arch/riscv/Kconfig
View File

@ -60,7 +60,7 @@ config RISCV
select ARCH_HAS_GIGANTIC_PAGE
select ARCH_HAS_SET_DIRECT_MAP
select ARCH_HAS_SET_MEMORY
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_STRICT_KERNEL_RWX if MMU
select ARCH_WANT_HUGE_PMD_SHARE if 64BIT
select SPARSEMEM_STATIC if 32BIT
select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU

3
arch/riscv/include/asm/csr.h
View File

@ -51,13 +51,10 @@
#define CAUSE_IRQ_FLAG (_AC(1, UL) << (__riscv_xlen - 1))
/* Interrupt causes (minus the high bit) */
#define IRQ_U_SOFT 0
#define IRQ_S_SOFT 1
#define IRQ_M_SOFT 3
#define IRQ_U_TIMER 4
#define IRQ_S_TIMER 5
#define IRQ_M_TIMER 7
#define IRQ_U_EXT 8
#define IRQ_S_EXT 9
#define IRQ_M_EXT 11

22
arch/riscv/include/asm/hwcap.h
View File

@ -8,6 +8,7 @@
#ifndef _ASM_RISCV_HWCAP_H
#define _ASM_RISCV_HWCAP_H
#include <linux/bits.h>
#include <uapi/asm/hwcap.h>
#ifndef __ASSEMBLY__
@ -22,6 +23,27 @@ enum {
};
extern unsigned long elf_hwcap;
#define RISCV_ISA_EXT_a ('a' - 'a')
#define RISCV_ISA_EXT_c ('c' - 'a')
#define RISCV_ISA_EXT_d ('d' - 'a')
#define RISCV_ISA_EXT_f ('f' - 'a')
#define RISCV_ISA_EXT_h ('h' - 'a')
#define RISCV_ISA_EXT_i ('i' - 'a')
#define RISCV_ISA_EXT_m ('m' - 'a')
#define RISCV_ISA_EXT_s ('s' - 'a')
#define RISCV_ISA_EXT_u ('u' - 'a')
#define RISCV_ISA_EXT_MAX 64
unsigned long riscv_isa_extension_base(const unsigned long *isa_bitmap);
#define riscv_isa_extension_mask(ext) BIT_MASK(RISCV_ISA_EXT_##ext)
bool __riscv_isa_extension_available(const unsigned long *isa_bitmap, int bit);
#define riscv_isa_extension_available(isa_bitmap, ext) \
__riscv_isa_extension_available(isa_bitmap, RISCV_ISA_EXT_##ext)
#endif
#endif /* _ASM_RISCV_HWCAP_H */

2
arch/riscv/include/asm/module.h
View File

@ -6,8 +6,6 @@
#include <asm-generic/module.h>
#define MODULE_ARCH_VERMAGIC "riscv"
struct module;
unsigned long module_emit_got_entry(struct module *mod, unsigned long val);
unsigned long module_emit_plt_entry(struct module *mod, unsigned long val);

8
arch/riscv/include/asm/set_memory.h
View File

@ -22,14 +22,6 @@ static inline int set_memory_x(unsigned long addr, int numpages) { return 0; }
static inline int set_memory_nx(unsigned long addr, int numpages) { return 0; }
#endif
#ifdef CONFIG_STRICT_KERNEL_RWX
void set_kernel_text_ro(void);
void set_kernel_text_rw(void);
#else
static inline void set_kernel_text_ro(void) { }
static inline void set_kernel_text_rw(void) { }
#endif
int set_direct_map_invalid_noflush(struct page *page);
int set_direct_map_default_noflush(struct page *page);

9
arch/riscv/include/asm/vermagic.h Normal file
View File

@ -0,0 +1,9 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2017 Andes Technology Corporation */
#ifndef _ASM_VERMAGIC_H
#define _ASM_VERMAGIC_H
#define MODULE_ARCH_VERMAGIC "riscv"
#endif /* _ASM_VERMAGIC_H */

4
arch/riscv/kernel/cpu_ops.c
View File

@ -15,8 +15,8 @@
const struct cpu_operations *cpu_ops[NR_CPUS] __ro_after_init;
void *__cpu_up_stack_pointer[NR_CPUS];
void *__cpu_up_task_pointer[NR_CPUS];
void *__cpu_up_stack_pointer[NR_CPUS] __section(.data);
void *__cpu_up_task_pointer[NR_CPUS] __section(.data);
extern const struct cpu_operations cpu_ops_sbi;
extern const struct cpu_operations cpu_ops_spinwait;

83
arch/riscv/kernel/cpufeature.c
View File

@ -6,6 +6,7 @@
* Copyright (C) 2017 SiFive
*/
#include <linux/bitmap.h>
#include <linux/of.h>
#include <asm/processor.h>
#include <asm/hwcap.h>
@ -13,15 +14,57 @@
#include <asm/switch_to.h>
unsigned long elf_hwcap __read_mostly;
/* Host ISA bitmap */
static DECLARE_BITMAP(riscv_isa, RISCV_ISA_EXT_MAX) __read_mostly;
#ifdef CONFIG_FPU
bool has_fpu __read_mostly;
#endif
/**
* riscv_isa_extension_base() - Get base extension word
*
* @isa_bitmap: ISA bitmap to use
* Return: base extension word as unsigned long value
*
* NOTE: If isa_bitmap is NULL then Host ISA bitmap will be used.
*/
unsigned long riscv_isa_extension_base(const unsigned long *isa_bitmap)
{
if (!isa_bitmap)
return riscv_isa[0];
return isa_bitmap[0];
}
EXPORT_SYMBOL_GPL(riscv_isa_extension_base);
/**
* __riscv_isa_extension_available() - Check whether given extension
* is available or not
*
* @isa_bitmap: ISA bitmap to use
* @bit: bit position of the desired extension
* Return: true or false
*
* NOTE: If isa_bitmap is NULL then Host ISA bitmap will be used.
*/
bool __riscv_isa_extension_available(const unsigned long *isa_bitmap, int bit)
{
const unsigned long *bmap = (isa_bitmap) ? isa_bitmap : riscv_isa;
if (bit >= RISCV_ISA_EXT_MAX)
return false;
return test_bit(bit, bmap) ? true : false;
}
EXPORT_SYMBOL_GPL(__riscv_isa_extension_available);
void riscv_fill_hwcap(void)
{
struct device_node *node;
const char *isa;
size_t i;
char print_str[BITS_PER_LONG + 1];
size_t i, j, isa_len;
static unsigned long isa2hwcap[256] = {0};
isa2hwcap['i'] = isa2hwcap['I'] = COMPAT_HWCAP_ISA_I;
@ -33,8 +76,11 @@ void riscv_fill_hwcap(void)
elf_hwcap = 0;
bitmap_zero(riscv_isa, RISCV_ISA_EXT_MAX);
for_each_of_cpu_node(node) {
unsigned long this_hwcap = 0;
unsigned long this_isa = 0;
if (riscv_of_processor_hartid(node) < 0)
continue;
@ -44,8 +90,24 @@ void riscv_fill_hwcap(void)
continue;
}
for (i = 0; i < strlen(isa); ++i)
i = 0;
isa_len = strlen(isa);
#if IS_ENABLED(CONFIG_32BIT)
if (!strncmp(isa, "rv32", 4))
i += 4;
#elif IS_ENABLED(CONFIG_64BIT)
if (!strncmp(isa, "rv64", 4))
i += 4;
#endif
for (; i < isa_len; ++i) {
this_hwcap |= isa2hwcap[(unsigned char)(isa[i])];
/*
* TODO: X, Y and Z extension parsing for Host ISA
* bitmap will be added in-future.
*/
if ('a' <= isa[i] && isa[i] < 'x')
this_isa |= (1UL << (isa[i] - 'a'));
}
/*
* All "okay" hart should have same isa. Set HWCAP based on
@ -56,6 +118,11 @@ void riscv_fill_hwcap(void)
elf_hwcap &= this_hwcap;
else
elf_hwcap = this_hwcap;
if (riscv_isa[0])
riscv_isa[0] &= this_isa;
else
riscv_isa[0] = this_isa;
}
/* We don't support systems with F but without D, so mask those out
@ -65,7 +132,17 @@ void riscv_fill_hwcap(void)
elf_hwcap &= ~COMPAT_HWCAP_ISA_F;
}
pr_info("elf_hwcap is 0x%lx\n", elf_hwcap);
memset(print_str, 0, sizeof(print_str));
for (i = 0, j = 0; i < BITS_PER_LONG; i++)
if (riscv_isa[0] & BIT_MASK(i))
print_str[j++] = (char)('a' + i);
pr_info("riscv: ISA extensions %s\n", print_str);
memset(print_str, 0, sizeof(print_str));
for (i = 0, j = 0; i < BITS_PER_LONG; i++)
if (elf_hwcap & BIT_MASK(i))
print_str[j++] = (char)('a' + i);
pr_info("riscv: ELF capabilities %s\n", print_str);
#ifdef CONFIG_FPU
if (elf_hwcap & (COMPAT_HWCAP_ISA_F | COMPAT_HWCAP_ISA_D))

17
arch/riscv/kernel/sbi.c
View File

@ -102,7 +102,7 @@ void sbi_shutdown(void)
{
sbi_ecall(SBI_EXT_0_1_SHUTDOWN, 0, 0, 0, 0, 0, 0, 0);
}
EXPORT_SYMBOL(sbi_set_timer);
EXPORT_SYMBOL(sbi_shutdown);
/**
* sbi_clear_ipi() - Clear any pending IPIs for the calling hart.
@ -113,7 +113,7 @@ void sbi_clear_ipi(void)
{
sbi_ecall(SBI_EXT_0_1_CLEAR_IPI, 0, 0, 0, 0, 0, 0, 0);
}
EXPORT_SYMBOL(sbi_shutdown);
EXPORT_SYMBOL(sbi_clear_ipi);
/**
* sbi_set_timer_v01() - Program the timer for next timer event.
@ -167,6 +167,11 @@ static int __sbi_rfence_v01(int fid, const unsigned long *hart_mask,
return result;
}
static void sbi_set_power_off(void)
{
pm_power_off = sbi_shutdown;
}
#else
static void __sbi_set_timer_v01(uint64_t stime_value)
{
@ -191,6 +196,8 @@ static int __sbi_rfence_v01(int fid, const unsigned long *hart_mask,
return 0;
}
static void sbi_set_power_off(void) {}
#endif /* CONFIG_RISCV_SBI_V01 */
static void __sbi_set_timer_v02(uint64_t stime_value)
@ -540,16 +547,12 @@ static inline long sbi_get_firmware_version(void)
return __sbi_base_ecall(SBI_EXT_BASE_GET_IMP_VERSION);
}
static void sbi_power_off(void)
{
sbi_shutdown();
}
int __init sbi_init(void)
{
int ret;
pm_power_off = sbi_power_off;
sbi_set_power_off();
ret = sbi_get_spec_version();
if (ret > 0)
sbi_spec_version = ret;

2
arch/riscv/kernel/smp.c
View File

@ -10,6 +10,7 @@
#include <linux/cpu.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/profile.h>
#include <linux/smp.h>
#include <linux/sched.h>
@ -63,6 +64,7 @@ void riscv_cpuid_to_hartid_mask(const struct cpumask *in, struct cpumask *out)
for_each_cpu(cpu, in)
cpumask_set_cpu(cpuid_to_hartid_map(cpu), out);
}
EXPORT_SYMBOL_GPL(riscv_cpuid_to_hartid_mask);
bool arch_match_cpu_phys_id(int cpu, u64 phys_id)
{

4
arch/riscv/kernel/stacktrace.c
View File

@ -12,6 +12,8 @@
#include <linux/stacktrace.h>
#include <linux/ftrace.h>
register unsigned long sp_in_global __asm__("sp");
#ifdef CONFIG_FRAME_POINTER
struct stackframe {
@ -19,8 +21,6 @@ struct stackframe {
unsigned long ra;
};
register unsigned long sp_in_global __asm__("sp");
void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs,
bool (*fn)(unsigned long, void *), void *arg)
{

8
arch/riscv/kernel/vdso/Makefile
View File

@ -12,7 +12,7 @@ vdso-syms += getcpu
vdso-syms += flush_icache
# Files to link into the vdso
obj-vdso = $(patsubst %, %.o, $(vdso-syms))
obj-vdso = $(patsubst %, %.o, $(vdso-syms)) note.o
# Build rules
targets := $(obj-vdso) vdso.so vdso.so.dbg vdso.lds vdso-dummy.o
@ -33,15 +33,15 @@ $(obj)/vdso.so.dbg: $(src)/vdso.lds $(obj-vdso) FORCE
$(call if_changed,vdsold)
# We also create a special relocatable object that should mirror the symbol
# table and layout of the linked DSO. With ld -R we can then refer to
# these symbols in the kernel code rather than hand-coded addresses.
# table and layout of the linked DSO. With ld --just-symbols we can then
# refer to these symbols in the kernel code rather than hand-coded addresses.
SYSCFLAGS_vdso.so.dbg = -shared -s -Wl,-soname=linux-vdso.so.1 \
-Wl,--build-id -Wl,--hash-style=both
$(obj)/vdso-dummy.o: $(src)/vdso.lds $(obj)/rt_sigreturn.o FORCE
$(call if_changed,vdsold)
LDFLAGS_vdso-syms.o := -r -R
LDFLAGS_vdso-syms.o := -r --just-symbols
$(obj)/vdso-syms.o: $(obj)/vdso-dummy.o FORCE
$(call if_changed,ld)

12
arch/riscv/kernel/vdso/note.S Normal file
View File

@ -0,0 +1,12 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* This supplies .note.* sections to go into the PT_NOTE inside the vDSO text.
* Here we can supply some information useful to userland.
*/
#include <linux/elfnote.h>
#include <linux/version.h>
ELFNOTE_START(Linux, 0, "a")
.long LINUX_VERSION_CODE
ELFNOTE_END

19
arch/riscv/mm/init.c
View File

@ -150,7 +150,8 @@ void __init setup_bootmem(void)
memblock_reserve(vmlinux_start, vmlinux_end - vmlinux_start);
set_max_mapnr(PFN_DOWN(mem_size));
max_low_pfn = PFN_DOWN(memblock_end_of_DRAM());
max_pfn = PFN_DOWN(memblock_end_of_DRAM());
max_low_pfn = max_pfn;
#ifdef CONFIG_BLK_DEV_INITRD
setup_initrd();
@ -501,22 +502,6 @@ static inline void setup_vm_final(void)
#endif /* CONFIG_MMU */
#ifdef CONFIG_STRICT_KERNEL_RWX
void set_kernel_text_rw(void)
{
unsigned long text_start = (unsigned long)_text;
unsigned long text_end = (unsigned long)_etext;
set_memory_rw(text_start, (text_end - text_start) >> PAGE_SHIFT);
}
void set_kernel_text_ro(void)
{
unsigned long text_start = (unsigned long)_text;
unsigned long text_end = (unsigned long)_etext;
set_memory_ro(text_start, (text_end - text_start) >> PAGE_SHIFT);
}
void mark_rodata_ro(void)
{
unsigned long text_start = (unsigned long)_text;

2
arch/s390/boot/uv.c
View File

@ -7,9 +7,7 @@
#ifdef CONFIG_PROTECTED_VIRTUALIZATION_GUEST
int __bootdata_preserved(prot_virt_guest);
#endif
#if IS_ENABLED(CONFIG_KVM)
struct uv_info __bootdata_preserved(uv_info);
#endif
void uv_query_info(void)
{

2
arch/s390/kernel/diag.c
View File

@ -133,7 +133,7 @@ void diag_stat_inc(enum diag_stat_enum nr)
}
EXPORT_SYMBOL(diag_stat_inc);
void diag_stat_inc_norecursion(enum diag_stat_enum nr)
void notrace diag_stat_inc_norecursion(enum diag_stat_enum nr)
{
this_cpu_inc(diag_stat.counter[nr]);
trace_s390_diagnose_norecursion(diag_map[nr].code);

4
arch/s390/kernel/smp.c
View File

@ -403,7 +403,7 @@ int smp_find_processor_id(u16 address)
return -1;
}
bool arch_vcpu_is_preempted(int cpu)
bool notrace arch_vcpu_is_preempted(int cpu)
{
if (test_cpu_flag_of(CIF_ENABLED_WAIT, cpu))
return false;
@ -413,7 +413,7 @@ bool arch_vcpu_is_preempted(int cpu)
}
EXPORT_SYMBOL(arch_vcpu_is_preempted);
void smp_yield_cpu(int cpu)
void notrace smp_yield_cpu(int cpu)
{
if (!MACHINE_HAS_DIAG9C)
return;

2
arch/s390/kernel/trace.c
View File

@ -14,7 +14,7 @@ EXPORT_TRACEPOINT_SYMBOL(s390_diagnose);
static DEFINE_PER_CPU(unsigned int, diagnose_trace_depth);
void trace_s390_diagnose_norecursion(int diag_nr)
void notrace trace_s390_diagnose_norecursion(int diag_nr)
{
unsigned long flags;
unsigned int *depth;

3
arch/s390/kernel/uv.c
View File

@ -23,10 +23,11 @@
int __bootdata_preserved(prot_virt_guest);
#endif
struct uv_info __bootdata_preserved(uv_info);
#if IS_ENABLED(CONFIG_KVM)
int prot_virt_host;
EXPORT_SYMBOL(prot_virt_host);
struct uv_info __bootdata_preserved(uv_info);
EXPORT_SYMBOL(uv_info);
static int __init prot_virt_setup(char *val)

2
arch/s390/kvm/interrupt.c
View File

@ -393,7 +393,7 @@ static unsigned long deliverable_irqs(struct kvm_vcpu *vcpu)
if (psw_mchk_disabled(vcpu))
active_mask &= ~IRQ_PEND_MCHK_MASK;
/* PV guest cpus can have a single interruption injected at a time. */
if (kvm_s390_pv_cpu_is_protected(vcpu) &&
if (kvm_s390_pv_cpu_get_handle(vcpu) &&
vcpu->arch.sie_block->iictl != IICTL_CODE_NONE)
active_mask &= ~(IRQ_PEND_EXT_II_MASK |
IRQ_PEND_IO_MASK |

4
arch/s390/kvm/kvm-s390.c
View File

@ -545,6 +545,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_S390_AIS:
case KVM_CAP_S390_AIS_MIGRATION:
case KVM_CAP_S390_VCPU_RESETS:
case KVM_CAP_SET_GUEST_DEBUG:
r = 1;
break;
case KVM_CAP_S390_HPAGE_1M:
@ -1939,6 +1940,9 @@ static int gfn_to_memslot_approx(struct kvm_memslots *slots, gfn_t gfn)
start = slot + 1;
}
if (start >= slots->used_slots)
return slots->used_slots - 1;
if (gfn >= memslots[start].base_gfn &&
gfn < memslots[start].base_gfn + memslots[start].npages) {
atomic_set(&slots->lru_slot, start);

4
arch/s390/kvm/priv.c
View File

@ -626,10 +626,12 @@ static int handle_pqap(struct kvm_vcpu *vcpu)
* available for the guest are AQIC and TAPQ with the t bit set
* since we do not set IC.3 (FIII) we currently will only intercept
* the AQIC function code.
* Note: running nested under z/VM can result in intercepts for other
* function codes, e.g. PQAP(QCI). We do not support this and bail out.
*/
reg0 = vcpu->run->s.regs.gprs[0];
fc = (reg0 >> 24) & 0xff;
if (WARN_ON_ONCE(fc != 0x03))
if (fc != 0x03)
return -EOPNOTSUPP;
/* PQAP instruction is allowed for guest kernel only */

4
arch/s390/lib/uaccess.c
View File

@ -64,10 +64,13 @@ mm_segment_t enable_sacf_uaccess(void)
{
mm_segment_t old_fs;
unsigned long asce, cr;
unsigned long flags;
old_fs = current->thread.mm_segment;
if (old_fs & 1)
return old_fs;
/* protect against a concurrent page table upgrade */
local_irq_save(flags);
current->thread.mm_segment |= 1;
asce = S390_lowcore.kernel_asce;
if (likely(old_fs == USER_DS)) {
@ -83,6 +86,7 @@ mm_segment_t enable_sacf_uaccess(void)
__ctl_load(asce, 7, 7);
set_cpu_flag(CIF_ASCE_SECONDARY);
}
local_irq_restore(flags);
return old_fs;
}
EXPORT_SYMBOL(enable_sacf_uaccess);

16
arch/s390/mm/pgalloc.c
View File

@ -70,8 +70,20 @@ static void __crst_table_upgrade(void *arg)
{
struct mm_struct *mm = arg;
if (current->active_mm == mm)
set_user_asce(mm);
/* we must change all active ASCEs to avoid the creation of new TLBs */
if (current->active_mm == mm) {
S390_lowcore.user_asce = mm->context.asce;
if (current->thread.mm_segment == USER_DS) {
__ctl_load(S390_lowcore.user_asce, 1, 1);
/* Mark user-ASCE present in CR1 */
clear_cpu_flag(CIF_ASCE_PRIMARY);
}
if (current->thread.mm_segment == USER_DS_SACF) {
__ctl_load(S390_lowcore.user_asce, 7, 7);
/* enable_sacf_uaccess does all or nothing */
WARN_ON(!test_cpu_flag(CIF_ASCE_SECONDARY));
}
}
__tlb_flush_local();
}

5
arch/s390/pci/pci_irq.c
View File

@ -115,7 +115,6 @@ static struct irq_chip zpci_irq_chip = {
.name = "PCI-MSI",
.irq_unmask = pci_msi_unmask_irq,
.irq_mask = pci_msi_mask_irq,
.irq_set_affinity = zpci_set_irq_affinity,
};
static void zpci_handle_cpu_local_irq(bool rescan)
@ -276,7 +275,9 @@ int arch_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
rc = -EIO;
if (hwirq - bit >= msi_vecs)
break;
irq = __irq_alloc_descs(-1, 0, 1, 0, THIS_MODULE, msi->affinity);
irq = __irq_alloc_descs(-1, 0, 1, 0, THIS_MODULE,
(irq_delivery == DIRECTED) ?
msi->affinity : NULL);
if (irq < 0)
return -ENOMEM;
rc = irq_set_msi_desc(irq, msi);

28
arch/sh/include/asm/module.h
View File

@ -11,32 +11,4 @@ struct mod_arch_specific {
};
#endif
#ifdef CONFIG_CPU_LITTLE_ENDIAN
# ifdef CONFIG_CPU_SH2
# define MODULE_PROC_FAMILY "SH2LE "
# elif defined CONFIG_CPU_SH3
# define MODULE_PROC_FAMILY "SH3LE "
# elif defined CONFIG_CPU_SH4
# define MODULE_PROC_FAMILY "SH4LE "
# elif defined CONFIG_CPU_SH5
# define MODULE_PROC_FAMILY "SH5LE "
# else
# error unknown processor family
# endif
#else
# ifdef CONFIG_CPU_SH2
# define MODULE_PROC_FAMILY "SH2BE "
# elif defined CONFIG_CPU_SH3
# define MODULE_PROC_FAMILY "SH3BE "
# elif defined CONFIG_CPU_SH4
# define MODULE_PROC_FAMILY "SH4BE "
# elif defined CONFIG_CPU_SH5
# define MODULE_PROC_FAMILY "SH5BE "
# else
# error unknown processor family
# endif
#endif
#define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY
#endif /* _ASM_SH_MODULE_H */

34
arch/sh/include/asm/vermagic.h Normal file
View File

@ -0,0 +1,34 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_VERMAGIC_H
#define _ASM_VERMAGIC_H
#ifdef CONFIG_CPU_LITTLE_ENDIAN
# ifdef CONFIG_CPU_SH2
# define MODULE_PROC_FAMILY "SH2LE "
# elif defined CONFIG_CPU_SH3
# define MODULE_PROC_FAMILY "SH3LE "
# elif defined CONFIG_CPU_SH4
# define MODULE_PROC_FAMILY "SH4LE "
# elif defined CONFIG_CPU_SH5
# define MODULE_PROC_FAMILY "SH5LE "
# else
# error unknown processor family
# endif
#else
# ifdef CONFIG_CPU_SH2
# define MODULE_PROC_FAMILY "SH2BE "
# elif defined CONFIG_CPU_SH3
# define MODULE_PROC_FAMILY "SH3BE "
# elif defined CONFIG_CPU_SH4
# define MODULE_PROC_FAMILY "SH4BE "
# elif defined CONFIG_CPU_SH5
# define MODULE_PROC_FAMILY "SH5BE "
# else
# error unknown processor family
# endif
#endif
#define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY
#endif /* _ASM_VERMAGIC_H */

2
arch/sh/mm/init.c
View File

@ -412,7 +412,7 @@ int arch_add_memory(int nid, u64 start, u64 size,
unsigned long nr_pages = size >> PAGE_SHIFT;
int ret;
if (WARN_ON_ONCE(params->pgprot.pgprot != PAGE_KERNEL.pgprot)
if (WARN_ON_ONCE(params->pgprot.pgprot != PAGE_KERNEL.pgprot))
return -EINVAL;
/* We only have ZONE_NORMAL, so this is easy.. */

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