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Merge tag 'v6.6.33' of git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable into odroid-6.6.y

Browse Source 
This is the 6.6.33 stable release

Change-Id: Ia8e72a6b172ec1212fcc820d3c2bfa8c886673aa
This commit is contained in:
Mauro (mdrjr) Ribeiro
2024-06-23 21:25:27 -03:00
parent 709dc56e14 140cf97204
commit 976f00a847
864 changed files with 9384 additions and 6736 deletions
Download Patch File Download Diff File Expand all files Collapse all files

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

@@ -3323,6 +3323,9 @@
arch-independent options, each of which is an
aggregation of existing arch-specific options.
Note, "mitigations" is supported if and only if the
kernel was built with CPU_MITIGATIONS=y.
off
Disable all optional CPU mitigations. This
improves system performance, but it may also

13
Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml
View File

@@ -28,6 +28,9 @@ properties:
reg:
maxItems: 1
clocks:
maxItems: 1
dmas:
maxItems: 1
@@ -39,12 +42,16 @@ properties:
$ref: /schemas/types.yaml#/definitions/phandle
description:
A reference to a the actual ADC to which this FPGA ADC interfaces to.
deprecated: true
'#io-backend-cells':
const: 0
required:
- compatible
- dmas
- reg
- adi,adc-dev
- clocks
additionalProperties: false
@@ -55,7 +62,7 @@ examples:
reg = <0x44a00000 0x10000>;
dmas = <&rx_dma 0>;
dma-names = "rx";
adi,adc-dev = <&spi_adc>;
clocks = <&axi_clk>;
#io-backend-cells = <0>;
};
...

18
Documentation/devicetree/bindings/media/i2c/ovti,ov2680.yaml
View File

@@ -37,15 +37,15 @@ properties:
active low.
maxItems: 1
dovdd-supply:
DOVDD-supply:
description:
Definition of the regulator used as interface power supply.
avdd-supply:
AVDD-supply:
description:
Definition of the regulator used as analog power supply.
dvdd-supply:
DVDD-supply:
description:
Definition of the regulator used as digital power supply.
@@ -59,9 +59,9 @@ required:
- reg
- clocks
- clock-names
- dovdd-supply
- avdd-supply
- dvdd-supply
- DOVDD-supply
- AVDD-supply
- DVDD-supply
- reset-gpios
- port
@@ -82,9 +82,9 @@ examples:
clock-names = "xvclk";
reset-gpios = <&gpio1 3 GPIO_ACTIVE_LOW>;
dovdd-supply = <&sw2_reg>;
dvdd-supply = <&sw2_reg>;
avdd-supply = <&reg_peri_3p15v>;
DOVDD-supply = <&sw2_reg>;
DVDD-supply = <&sw2_reg>;
AVDD-supply = <&reg_peri_3p15v>;
port {
ov2680_to_mipi: endpoint {

14
Documentation/devicetree/bindings/pci/rcar-pci-host.yaml
View File

@@ -68,6 +68,18 @@ properties:
phy-names:
const: pcie
vpcie1v5-supply:
description: The 1.5v regulator to use for PCIe.
vpcie3v3-supply:
description: The 3.3v regulator to use for PCIe.
vpcie12v-supply:
description: The 12v regulator to use for PCIe.
iommu-map: true
iommu-map-mask: true
required:
- compatible
- reg
@@ -121,5 +133,7 @@ examples:
clock-names = "pcie", "pcie_bus";
power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
resets = <&cpg 319>;
vpcie3v3-supply = <&pcie_3v3>;
vpcie12v-supply = <&pcie_12v>;
};
};

1
Documentation/devicetree/bindings/pci/rockchip,rk3399-pcie.yaml
View File

@@ -37,6 +37,7 @@ properties:
description: This property is needed if using 24MHz OSC for RC's PHY.
ep-gpios:
maxItems: 1
description: pre-reset GPIO
vpcie12v-supply:

16
Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-ufs-phy.yaml
View File

@@ -71,7 +71,6 @@ required:
- reg
- clocks
- clock-names
- power-domains
- resets
- reset-names
- vdda-phy-supply
@@ -130,6 +129,21 @@ allOf:
clock-names:
maxItems: 1
- if:
properties:
compatible:
contains:
enum:
- qcom,msm8996-qmp-ufs-phy
- qcom,msm8998-qmp-ufs-phy
then:
properties:
power-domains:
false
else:
required:
- power-domains
additionalProperties: false
examples:

4
Documentation/devicetree/bindings/phy/qcom,usb-snps-femto-v2.yaml
View File

@@ -15,9 +15,6 @@ description: |
properties:
compatible:
oneOf:
- enum:
- qcom,sc8180x-usb-hs-phy
- qcom,usb-snps-femto-v2-phy
- items:
- enum:
- qcom,sa8775p-usb-hs-phy
@@ -26,6 +23,7 @@ properties:
- items:
- enum:
- qcom,sc7280-usb-hs-phy
- qcom,sc8180x-usb-hs-phy
- qcom,sdx55-usb-hs-phy
- qcom,sdx65-usb-hs-phy
- qcom,sm6375-usb-hs-phy

92
Documentation/devicetree/bindings/pinctrl/mediatek,mt7622-pinctrl.yaml
View File

@@ -97,7 +97,8 @@ patternProperties:
then:
properties:
groups:
enum: [emmc, emmc_rst]
items:
enum: [emmc, emmc_rst]
- if:
properties:
function:
@@ -105,8 +106,9 @@ patternProperties:
then:
properties:
groups:
enum: [esw, esw_p0_p1, esw_p2_p3_p4, rgmii_via_esw,
rgmii_via_gmac1, rgmii_via_gmac2, mdc_mdio]
items:
enum: [esw, esw_p0_p1, esw_p2_p3_p4, rgmii_via_esw,
rgmii_via_gmac1, rgmii_via_gmac2, mdc_mdio]
- if:
properties:
function:
@@ -123,10 +125,11 @@ patternProperties:
then:
properties:
groups:
enum: [i2s_in_mclk_bclk_ws, i2s1_in_data, i2s2_in_data,
i2s3_in_data, i2s4_in_data, i2s_out_mclk_bclk_ws,
i2s1_out_data, i2s2_out_data, i2s3_out_data,
i2s4_out_data]
items:
enum: [i2s_in_mclk_bclk_ws, i2s1_in_data, i2s2_in_data,
i2s3_in_data, i2s4_in_data, i2s_out_mclk_bclk_ws,
i2s1_out_data, i2s2_out_data, i2s3_out_data,
i2s4_out_data]
- if:
properties:
function:
@@ -159,10 +162,11 @@ patternProperties:
then:
properties:
groups:
enum: [pcie0_0_waken, pcie0_1_waken, pcie1_0_waken,
pcie0_0_clkreq, pcie0_1_clkreq, pcie1_0_clkreq,
pcie0_pad_perst, pcie1_pad_perst, pcie_pereset,
pcie_wake, pcie_clkreq]
items:
enum: [pcie0_0_waken, pcie0_1_waken, pcie1_0_waken,
pcie0_0_clkreq, pcie0_1_clkreq, pcie1_0_clkreq,
pcie0_pad_perst, pcie1_pad_perst, pcie_pereset,
pcie_wake, pcie_clkreq]
- if:
properties:
function:
@@ -178,11 +182,12 @@ patternProperties:
then:
properties:
groups:
enum: [pwm_ch1_0, pwm_ch1_1, pwm_ch1_2, pwm_ch2_0, pwm_ch2_1,
pwm_ch2_2, pwm_ch3_0, pwm_ch3_1, pwm_ch3_2, pwm_ch4_0,
pwm_ch4_1, pwm_ch4_2, pwm_ch4_3, pwm_ch5_0, pwm_ch5_1,
pwm_ch5_2, pwm_ch6_0, pwm_ch6_1, pwm_ch6_2, pwm_ch6_3,
pwm_ch7_0, pwm_0, pwm_1]
items:
enum: [pwm_ch1_0, pwm_ch1_1, pwm_ch1_2, pwm_ch2_0, pwm_ch2_1,
pwm_ch2_2, pwm_ch3_0, pwm_ch3_1, pwm_ch3_2, pwm_ch4_0,
pwm_ch4_1, pwm_ch4_2, pwm_ch4_3, pwm_ch5_0, pwm_ch5_1,
pwm_ch5_2, pwm_ch6_0, pwm_ch6_1, pwm_ch6_2, pwm_ch6_3,
pwm_ch7_0, pwm_0, pwm_1]
- if:
properties:
function:
@@ -260,33 +265,34 @@ patternProperties:
pins:
description:
An array of strings. Each string contains the name of a pin.
enum: [GPIO_A, I2S1_IN, I2S1_OUT, I2S_BCLK, I2S_WS, I2S_MCLK, TXD0,
RXD0, SPI_WP, SPI_HOLD, SPI_CLK, SPI_MOSI, SPI_MISO, SPI_CS,
I2C_SDA, I2C_SCL, I2S2_IN, I2S3_IN, I2S4_IN, I2S2_OUT,
I2S3_OUT, I2S4_OUT, GPIO_B, MDC, MDIO, G2_TXD0, G2_TXD1,
G2_TXD2, G2_TXD3, G2_TXEN, G2_TXC, G2_RXD0, G2_RXD1, G2_RXD2,
G2_RXD3, G2_RXDV, G2_RXC, NCEB, NWEB, NREB, NDL4, NDL5, NDL6,
NDL7, NRB, NCLE, NALE, NDL0, NDL1, NDL2, NDL3, MDI_TP_P0,
MDI_TN_P0, MDI_RP_P0, MDI_RN_P0, MDI_TP_P1, MDI_TN_P1,
MDI_RP_P1, MDI_RN_P1, MDI_RP_P2, MDI_RN_P2, MDI_TP_P2,
MDI_TN_P2, MDI_TP_P3, MDI_TN_P3, MDI_RP_P3, MDI_RN_P3,
MDI_RP_P4, MDI_RN_P4, MDI_TP_P4, MDI_TN_P4, PMIC_SCL,
PMIC_SDA, SPIC1_CLK, SPIC1_MOSI, SPIC1_MISO, SPIC1_CS,
GPIO_D, WATCHDOG, RTS3_N, CTS3_N, TXD3, RXD3, PERST0_N,
PERST1_N, WLED_N, EPHY_LED0_N, AUXIN0, AUXIN1, AUXIN2,
AUXIN3, TXD4, RXD4, RTS4_N, CST4_N, PWM1, PWM2, PWM3, PWM4,
PWM5, PWM6, PWM7, GPIO_E, TOP_5G_CLK, TOP_5G_DATA,
WF0_5G_HB0, WF0_5G_HB1, WF0_5G_HB2, WF0_5G_HB3, WF0_5G_HB4,
WF0_5G_HB5, WF0_5G_HB6, XO_REQ, TOP_RST_N, SYS_WATCHDOG,
EPHY_LED0_N_JTDO, EPHY_LED1_N_JTDI, EPHY_LED2_N_JTMS,
EPHY_LED3_N_JTCLK, EPHY_LED4_N_JTRST_N, WF2G_LED_N,
WF5G_LED_N, GPIO_9, GPIO_10, GPIO_11, GPIO_12, UART1_TXD,
UART1_RXD, UART1_CTS, UART1_RTS, UART2_TXD, UART2_RXD,
UART2_CTS, UART2_RTS, SMI_MDC, SMI_MDIO, PCIE_PERESET_N,
PWM_0, GPIO_0, GPIO_1, GPIO_2, GPIO_3, GPIO_4, GPIO_5,
GPIO_6, GPIO_7, GPIO_8, UART0_TXD, UART0_RXD, TOP_2G_CLK,
TOP_2G_DATA, WF0_2G_HB0, WF0_2G_HB1, WF0_2G_HB2, WF0_2G_HB3,
WF0_2G_HB4, WF0_2G_HB5, WF0_2G_HB6]
items:
enum: [GPIO_A, I2S1_IN, I2S1_OUT, I2S_BCLK, I2S_WS, I2S_MCLK, TXD0,
RXD0, SPI_WP, SPI_HOLD, SPI_CLK, SPI_MOSI, SPI_MISO, SPI_CS,
I2C_SDA, I2C_SCL, I2S2_IN, I2S3_IN, I2S4_IN, I2S2_OUT,
I2S3_OUT, I2S4_OUT, GPIO_B, MDC, MDIO, G2_TXD0, G2_TXD1,
G2_TXD2, G2_TXD3, G2_TXEN, G2_TXC, G2_RXD0, G2_RXD1, G2_RXD2,
G2_RXD3, G2_RXDV, G2_RXC, NCEB, NWEB, NREB, NDL4, NDL5, NDL6,
NDL7, NRB, NCLE, NALE, NDL0, NDL1, NDL2, NDL3, MDI_TP_P0,
MDI_TN_P0, MDI_RP_P0, MDI_RN_P0, MDI_TP_P1, MDI_TN_P1,
MDI_RP_P1, MDI_RN_P1, MDI_RP_P2, MDI_RN_P2, MDI_TP_P2,
MDI_TN_P2, MDI_TP_P3, MDI_TN_P3, MDI_RP_P3, MDI_RN_P3,
MDI_RP_P4, MDI_RN_P4, MDI_TP_P4, MDI_TN_P4, PMIC_SCL,
PMIC_SDA, SPIC1_CLK, SPIC1_MOSI, SPIC1_MISO, SPIC1_CS,
GPIO_D, WATCHDOG, RTS3_N, CTS3_N, TXD3, RXD3, PERST0_N,
PERST1_N, WLED_N, EPHY_LED0_N, AUXIN0, AUXIN1, AUXIN2,
AUXIN3, TXD4, RXD4, RTS4_N, CST4_N, PWM1, PWM2, PWM3, PWM4,
PWM5, PWM6, PWM7, GPIO_E, TOP_5G_CLK, TOP_5G_DATA,
WF0_5G_HB0, WF0_5G_HB1, WF0_5G_HB2, WF0_5G_HB3, WF0_5G_HB4,
WF0_5G_HB5, WF0_5G_HB6, XO_REQ, TOP_RST_N, SYS_WATCHDOG,
EPHY_LED0_N_JTDO, EPHY_LED1_N_JTDI, EPHY_LED2_N_JTMS,
EPHY_LED3_N_JTCLK, EPHY_LED4_N_JTRST_N, WF2G_LED_N,
WF5G_LED_N, GPIO_9, GPIO_10, GPIO_11, GPIO_12, UART1_TXD,
UART1_RXD, UART1_CTS, UART1_RTS, UART2_TXD, UART2_RXD,
UART2_CTS, UART2_RTS, SMI_MDC, SMI_MDIO, PCIE_PERESET_N,
PWM_0, GPIO_0, GPIO_1, GPIO_2, GPIO_3, GPIO_4, GPIO_5,
GPIO_6, GPIO_7, GPIO_8, UART0_TXD, UART0_RXD, TOP_2G_CLK,
TOP_2G_DATA, WF0_2G_HB0, WF0_2G_HB1, WF0_2G_HB2, WF0_2G_HB3,
WF0_2G_HB4, WF0_2G_HB5, WF0_2G_HB6]
bias-disable: true

1
Documentation/devicetree/bindings/soc/rockchip/grf.yaml
View File

@@ -163,6 +163,7 @@ allOf:
unevaluatedProperties: false
pcie-phy:
type: object
description:
Documentation/devicetree/bindings/phy/rockchip-pcie-phy.txt

6
Documentation/devicetree/bindings/sound/rt5645.txt
View File

@@ -20,6 +20,11 @@ Optional properties:
a GPIO spec for the external headphone detect pin. If jd-mode = 0,
we will get the JD status by getting the value of hp-detect-gpios.
- cbj-sleeve-gpios:
a GPIO spec to control the external combo jack circuit to tie the sleeve/ring2
contacts to the ground or floating. It could avoid some electric noise from the
active speaker jacks.
- realtek,in2-differential
Boolean. Indicate MIC2 input are differential, rather than single-ended.
@@ -68,6 +73,7 @@ codec: rt5650@1a {
compatible = "realtek,rt5650";
reg = <0x1a>;
hp-detect-gpios = <&gpio 19 0>;
cbj-sleeve-gpios = <&gpio 20 0>;
interrupt-parent = <&gpio>;
interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
realtek,dmic-en = "true";

4
Documentation/devicetree/bindings/spmi/hisilicon,hisi-spmi-controller.yaml
View File

@@ -14,7 +14,7 @@ description: |
It is a MIPI System Power Management (SPMI) controller.
The PMIC part is provided by
./Documentation/devicetree/bindings/mfd/hisilicon,hi6421-spmi-pmic.yaml.
Documentation/devicetree/bindings/mfd/hisilicon,hi6421-spmi-pmic.yaml.
allOf:
- $ref: spmi.yaml#
@@ -48,7 +48,7 @@ patternProperties:
PMIC properties, which are specific to the used SPMI PMIC device(s).
When used in combination with HiSilicon 6421v600, the properties
are documented at
drivers/staging/hikey9xx/hisilicon,hi6421-spmi-pmic.yaml.
Documentation/devicetree/bindings/mfd/hisilicon,hi6421-spmi-pmic.yaml
unevaluatedProperties: false

34
Documentation/devicetree/bindings/thermal/loongson,ls2k-thermal.yaml
View File

@@ -10,28 +10,55 @@ maintainers:
- zhanghongchen <zhanghongchen@loongson.cn>
- Yinbo Zhu <zhuyinbo@loongson.cn>
allOf:
- $ref: /schemas/thermal/thermal-sensor.yaml#
properties:
compatible:
oneOf:
- enum:
- loongson,ls2k1000-thermal
- loongson,ls2k2000-thermal
- items:
- enum:
- loongson,ls2k2000-thermal
- loongson,ls2k0500-thermal
- const: loongson,ls2k1000-thermal
reg:
maxItems: 1
minItems: 1
maxItems: 2
interrupts:
maxItems: 1
'#thermal-sensor-cells':
const: 1
required:
- compatible
- reg
- interrupts
- '#thermal-sensor-cells'
additionalProperties: false
if:
properties:
compatible:
contains:
enum:
- loongson,ls2k2000-thermal
then:
properties:
reg:
minItems: 2
maxItems: 2
else:
properties:
reg:
maxItems: 1
unevaluatedProperties: false
examples:
- |
@@ -41,4 +68,5 @@ examples:
reg = <0x1fe01500 0x30>;
interrupt-parent = <&liointc0>;
interrupts = <7 IRQ_TYPE_LEVEL_LOW>;
#thermal-sensor-cells = <1>;
};

7
Documentation/driver-api/fpga/fpga-bridge.rst
View File

@@ -6,9 +6,12 @@ API to implement a new FPGA bridge
* struct fpga_bridge - The FPGA Bridge structure
* struct fpga_bridge_ops - Low level Bridge driver ops
* fpga_bridge_register() - Create and register a bridge
* __fpga_bridge_register() - Create and register a bridge
* fpga_bridge_unregister() - Unregister a bridge
The helper macro ``fpga_bridge_register()`` automatically sets
the module that registers the FPGA bridge as the owner.
.. kernel-doc:: include/linux/fpga/fpga-bridge.h
:functions: fpga_bridge
@@ -16,7 +19,7 @@ API to implement a new FPGA bridge
:functions: fpga_bridge_ops
.. kernel-doc:: drivers/fpga/fpga-bridge.c
:functions: fpga_bridge_register
:functions: __fpga_bridge_register
.. kernel-doc:: drivers/fpga/fpga-bridge.c
:functions: fpga_bridge_unregister

34
Documentation/driver-api/fpga/fpga-mgr.rst
View File

@@ -24,7 +24,8 @@ How to support a new FPGA device
--------------------------------
To add another FPGA manager, write a driver that implements a set of ops. The
probe function calls fpga_mgr_register() or fpga_mgr_register_full(), such as::
probe function calls ``fpga_mgr_register()`` or ``fpga_mgr_register_full()``,
such as::
static const struct fpga_manager_ops socfpga_fpga_ops = {
.write_init = socfpga_fpga_ops_configure_init,
@@ -69,10 +70,11 @@ probe function calls fpga_mgr_register() or fpga_mgr_register_full(), such as::
}
Alternatively, the probe function could call one of the resource managed
register functions, devm_fpga_mgr_register() or devm_fpga_mgr_register_full().
When these functions are used, the parameter syntax is the same, but the call
to fpga_mgr_unregister() should be removed. In the above example, the
socfpga_fpga_remove() function would not be required.
register functions, ``devm_fpga_mgr_register()`` or
``devm_fpga_mgr_register_full()``. When these functions are used, the
parameter syntax is the same, but the call to ``fpga_mgr_unregister()`` should be
removed. In the above example, the ``socfpga_fpga_remove()`` function would not be
required.
The ops will implement whatever device specific register writes are needed to
do the programming sequence for this particular FPGA. These ops return 0 for
@@ -125,15 +127,19 @@ API for implementing a new FPGA Manager driver
* struct fpga_manager - the FPGA manager struct
* struct fpga_manager_ops - Low level FPGA manager driver ops
* struct fpga_manager_info - Parameter structure for fpga_mgr_register_full()
* fpga_mgr_register_full() - Create and register an FPGA manager using the
* __fpga_mgr_register_full() - Create and register an FPGA manager using the
fpga_mgr_info structure to provide the full flexibility of options
* fpga_mgr_register() - Create and register an FPGA manager using standard
* __fpga_mgr_register() - Create and register an FPGA manager using standard
arguments
* devm_fpga_mgr_register_full() - Resource managed version of
fpga_mgr_register_full()
* devm_fpga_mgr_register() - Resource managed version of fpga_mgr_register()
* __devm_fpga_mgr_register_full() - Resource managed version of
__fpga_mgr_register_full()
* __devm_fpga_mgr_register() - Resource managed version of __fpga_mgr_register()
* fpga_mgr_unregister() - Unregister an FPGA manager
Helper macros ``fpga_mgr_register_full()``, ``fpga_mgr_register()``,
``devm_fpga_mgr_register_full()``, and ``devm_fpga_mgr_register()`` are available
to ease the registration.
.. kernel-doc:: include/linux/fpga/fpga-mgr.h
:functions: fpga_mgr_states
@@ -147,16 +153,16 @@ API for implementing a new FPGA Manager driver
:functions: fpga_manager_info
.. kernel-doc:: drivers/fpga/fpga-mgr.c
:functions: fpga_mgr_register_full
:functions: __fpga_mgr_register_full
.. kernel-doc:: drivers/fpga/fpga-mgr.c
:functions: fpga_mgr_register
:functions: __fpga_mgr_register
.. kernel-doc:: drivers/fpga/fpga-mgr.c
:functions: devm_fpga_mgr_register_full
:functions: __devm_fpga_mgr_register_full
.. kernel-doc:: drivers/fpga/fpga-mgr.c
:functions: devm_fpga_mgr_register
:functions: __devm_fpga_mgr_register
.. kernel-doc:: drivers/fpga/fpga-mgr.c
:functions: fpga_mgr_unregister

13
Documentation/driver-api/fpga/fpga-region.rst
View File

@@ -46,13 +46,16 @@ API to add a new FPGA region
----------------------------
* struct fpga_region - The FPGA region struct
* struct fpga_region_info - Parameter structure for fpga_region_register_full()
* fpga_region_register_full() - Create and register an FPGA region using the
* struct fpga_region_info - Parameter structure for __fpga_region_register_full()
* __fpga_region_register_full() - Create and register an FPGA region using the
fpga_region_info structure to provide the full flexibility of options
* fpga_region_register() - Create and register an FPGA region using standard
* __fpga_region_register() - Create and register an FPGA region using standard
arguments
* fpga_region_unregister() - Unregister an FPGA region
Helper macros ``fpga_region_register()`` and ``fpga_region_register_full()``
automatically set the module that registers the FPGA region as the owner.
The FPGA region's probe function will need to get a reference to the FPGA
Manager it will be using to do the programming. This usually would happen
during the region's probe function.
@@ -82,10 +85,10 @@ following APIs to handle building or tearing down that list.
:functions: fpga_region_info
.. kernel-doc:: drivers/fpga/fpga-region.c
:functions: fpga_region_register_full
:functions: __fpga_region_register_full
.. kernel-doc:: drivers/fpga/fpga-region.c
:functions: fpga_region_register
:functions: __fpga_region_register
.. kernel-doc:: drivers/fpga/fpga-region.c
:functions: fpga_region_unregister

8
Documentation/driver-api/pwm.rst
View File

@@ -41,7 +41,7 @@ the getter, devm_pwm_get() and devm_fwnode_pwm_get(), also exist.
After being requested, a PWM has to be configured using::
int pwm_apply_state(struct pwm_device *pwm, struct pwm_state *state);
int pwm_apply_might_sleep(struct pwm_device *pwm, struct pwm_state *state);
This API controls both the PWM period/duty_cycle config and the
enable/disable state.
@@ -57,13 +57,13 @@ If supported by the driver, the signal can be optimized, for example to improve
EMI by phase shifting the individual channels of a chip.
The pwm_config(), pwm_enable() and pwm_disable() functions are just wrappers
around pwm_apply_state() and should not be used if the user wants to change
around pwm_apply_might_sleep() and should not be used if the user wants to change
several parameter at once. For example, if you see pwm_config() and
pwm_{enable,disable}() calls in the same function, this probably means you
should switch to pwm_apply_state().
should switch to pwm_apply_might_sleep().
The PWM user API also allows one to query the PWM state that was passed to the
last invocation of pwm_apply_state() using pwm_get_state(). Note this is
last invocation of pwm_apply_might_sleep() using pwm_get_state(). Note this is
different to what the driver has actually implemented if the request cannot be
satisfied exactly with the hardware in use. There is currently no way for
consumers to get the actually implemented settings.

6
Documentation/filesystems/f2fs.rst
View File

@@ -126,9 +126,7 @@ norecovery Disable the roll-forward recovery routine, mounted read-
discard/nodiscard Enable/disable real-time discard in f2fs, if discard is
enabled, f2fs will issue discard/TRIM commands when a
segment is cleaned.
no_heap Disable heap-style segment allocation which finds free
segments for data from the beginning of main area, while
for node from the end of main area.
heap/no_heap Deprecated.
nouser_xattr Disable Extended User Attributes. Note: xattr is enabled
by default if CONFIG_F2FS_FS_XATTR is selected.
noacl Disable POSIX Access Control List. Note: acl is enabled
@@ -228,8 +226,6 @@ mode=%s Control block allocation mode which supports "adaptive"
option for more randomness.
Please, use these options for your experiments and we strongly
recommend to re-format the filesystem after using these options.
io_bits=%u Set the bit size of write IO requests. It should be set
with "mode=lfs".
usrquota Enable plain user disk quota accounting.
grpquota Enable plain group disk quota accounting.
prjquota Enable plain project quota accounting.

10
MAINTAINERS
View File

@@ -10162,6 +10162,14 @@ L: linux-media@vger.kernel.org
S: Maintained
F: drivers/media/rc/iguanair.c
IIO BACKEND FRAMEWORK
M: Nuno Sa <nuno.sa@analog.com>
R: Olivier Moysan <olivier.moysan@foss.st.com>
L: linux-iio@vger.kernel.org
S: Maintained
F: drivers/iio/industrialio-backend.c
F: include/linux/iio/backend.h
IIO DIGITAL POTENTIOMETER DAC
M: Peter Rosin <peda@axentia.se>
L: linux-iio@vger.kernel.org
@@ -17385,7 +17393,7 @@ F: drivers/video/backlight/pwm_bl.c
F: include/dt-bindings/pwm/
F: include/linux/pwm.h
F: include/linux/pwm_backlight.h
K: pwm_(config|apply_state|ops)
K: pwm_(config|apply_might_sleep|ops)
PXA GPIO DRIVER
M: Robert Jarzmik <robert.jarzmik@free.fr>

11
Makefile
View File

@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 6
PATCHLEVEL = 6
SUBLEVEL = 32
SUBLEVEL = 33
EXTRAVERSION =
NAME = Hurr durr I'ma ninja sloth
@@ -1317,6 +1317,14 @@ scripts_unifdef: scripts_basic
quiet_cmd_install = INSTALL $(INSTALL_PATH)
cmd_install = unset sub_make_done; $(srctree)/scripts/install.sh
# ---------------------------------------------------------------------------
# vDSO install
PHONY += vdso_install
vdso_install: export INSTALL_FILES = $(vdso-install-y)
vdso_install:
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.vdsoinst
# ---------------------------------------------------------------------------
# Tools
@@ -1560,6 +1568,7 @@ help:
@echo '* vmlinux - Build the bare kernel'
@echo '* modules - Build all modules'
@echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
@echo ' vdso_install - Install unstripped vdso to INSTALL_MOD_PATH (default: /)'
@echo ' dir/ - Build all files in dir and below'
@echo ' dir/file.[ois] - Build specified target only'
@echo ' dir/file.ll - Build the LLVM assembly file'

7
arch/arm/Makefile
View File

@@ -304,11 +304,7 @@ $(INSTALL_TARGETS): KBUILD_IMAGE = $(boot)/$(patsubst %install,%Image,$@)
$(INSTALL_TARGETS):
$(call cmd,install)
PHONY += vdso_install
vdso_install:
ifeq ($(CONFIG_VDSO),y)
$(Q)$(MAKE) $(build)=arch/arm/vdso $@
endif
vdso-install-$(CONFIG_VDSO) += arch/arm/vdso/vdso.so.dbg
# My testing targets (bypasses dependencies)
bp:; $(Q)$(MAKE) $(build)=$(boot) $(boot)/bootpImage
@@ -331,7 +327,6 @@ define archhelp
echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or'
echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
echo ' install to $$(INSTALL_PATH) and run lilo'
echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'
echo
echo ' multi_v7_lpae_defconfig - multi_v7_defconfig with CONFIG_ARM_LPAE enabled'
endef

1
arch/arm/configs/sunxi_defconfig
View File

@@ -110,6 +110,7 @@ CONFIG_DRM_PANEL_LVDS=y
CONFIG_DRM_PANEL_SIMPLE=y
CONFIG_DRM_PANEL_EDP=y
CONFIG_DRM_SIMPLE_BRIDGE=y
CONFIG_DRM_DW_HDMI=y
CONFIG_DRM_LIMA=y
CONFIG_FB_SIMPLE=y
CONFIG_BACKLIGHT_CLASS_DEVICE=y

25
arch/arm/vdso/Makefile
View File

@@ -63,28 +63,3 @@ quiet_cmd_vdsold_and_vdso_check = LD $@
quiet_cmd_vdsomunge = MUNGE $@
cmd_vdsomunge = $(objtree)/$(obj)/vdsomunge $< $@
#
# Install the unstripped copy of vdso.so.dbg. If our toolchain
# supports build-id, install .build-id links as well.
#
# Cribbed from arch/x86/vdso/Makefile.
#
quiet_cmd_vdso_install = INSTALL $<
define cmd_vdso_install
cp $< "$(MODLIB)/vdso/vdso.so"; \
if readelf -n $< | grep -q 'Build ID'; then \
buildid=`readelf -n $< |grep 'Build ID' |sed -e 's/^.*Build ID: \(.*\)$$/\1/'`; \
first=`echo $$buildid | cut -b-2`; \
last=`echo $$buildid | cut -b3-`; \
mkdir -p "$(MODLIB)/vdso/.build-id/$$first"; \
ln -sf "../../vdso.so" "$(MODLIB)/vdso/.build-id/$$first/$$last.debug"; \
fi
endef
$(MODLIB)/vdso: FORCE
@mkdir -p $(MODLIB)/vdso
PHONY += vdso_install
vdso_install: $(obj)/vdso.so.dbg $(MODLIB)/vdso
$(call cmd,vdso_install)

9
arch/arm64/Makefile
View File

@@ -169,12 +169,6 @@ install: KBUILD_IMAGE := $(boot)/Image
install zinstall:
$(call cmd,install)
PHONY += vdso_install
vdso_install:
$(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@
$(if $(CONFIG_COMPAT_VDSO), \
$(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso32 $@)
archprepare:
$(Q)$(MAKE) $(build)=arch/arm64/tools kapi
ifeq ($(CONFIG_ARM64_ERRATUM_843419),y)
@@ -205,6 +199,9 @@ ifdef CONFIG_COMPAT_VDSO
endif
endif
vdso-install-y += arch/arm64/kernel/vdso/vdso.so.dbg
vdso-install-$(CONFIG_COMPAT_VDSO) += arch/arm64/kernel/vdso32/vdso.so.dbg:vdso32.so
include $(srctree)/scripts/Makefile.defconf
PHONY += virtconfig

13
arch/arm64/boot/dts/amlogic/meson-s4.dtsi
View File

@@ -61,10 +61,15 @@
#clock-cells = <0>;
};
pwrc: power-controller {
compatible = "amlogic,meson-s4-pwrc";
#power-domain-cells = <1>;
status = "okay";
firmware {
sm: secure-monitor {
compatible = "amlogic,meson-gxbb-sm";
pwrc: power-controller {
compatible = "amlogic,meson-s4-pwrc";
#power-domain-cells = <1>;
};
};
};
soc {

1
arch/arm64/include/asm/asm-bug.h
View File

@@ -28,6 +28,7 @@
14470: .long 14471f - .; \
_BUGVERBOSE_LOCATION(__FILE__, __LINE__) \
.short flags; \
.align 2; \
.popsection; \
14471:
#else

10
arch/arm64/kernel/vdso/Makefile
View File

@@ -78,13 +78,3 @@ include/generated/vdso-offsets.h: $(obj)/vdso.so.dbg FORCE
# Actual build commands
quiet_cmd_vdsold_and_vdso_check = LD $@
cmd_vdsold_and_vdso_check = $(cmd_ld); $(cmd_vdso_check)
# Install commands for the unstripped file
quiet_cmd_vdso_install = INSTALL $@
cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
vdso.so: $(obj)/vdso.so.dbg
@mkdir -p $(MODLIB)/vdso
$(call cmd,vdso_install)
vdso_install: vdso.so

10
arch/arm64/kernel/vdso32/Makefile
View File

@@ -172,13 +172,3 @@ gen-vdsosym := $(srctree)/$(src)/../vdso/gen_vdso_offsets.sh
quiet_cmd_vdsosym = VDSOSYM $@
# The AArch64 nm should be able to read an AArch32 binary
cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@
# Install commands for the unstripped file
quiet_cmd_vdso_install = INSTALL32 $@
cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/vdso32.so
vdso.so: $(obj)/vdso.so.dbg
@mkdir -p $(MODLIB)/vdso
$(call cmd,vdso_install)
vdso_install: vdso.so

4
arch/loongarch/Makefile
View File

@@ -136,9 +136,7 @@ vdso_prepare: prepare0
$(Q)$(MAKE) $(build)=arch/loongarch/vdso include/generated/vdso-offsets.h
endif
PHONY += vdso_install
vdso_install:
$(Q)$(MAKE) $(build)=arch/loongarch/vdso $@
vdso-install-y += arch/loongarch/vdso/vdso.so.dbg
all: $(notdir $(KBUILD_IMAGE))

3
arch/loongarch/include/asm/perf_event.h
View File

@@ -13,8 +13,7 @@
#define perf_arch_fetch_caller_regs(regs, __ip) { \
(regs)->csr_era = (__ip); \
(regs)->regs[3] = current_stack_pointer; \
(regs)->regs[22] = (unsigned long) __builtin_frame_address(0); \
(regs)->regs[3] = (unsigned long) __builtin_frame_address(0); \
}
#endif /* __LOONGARCH_PERF_EVENT_H__ */

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

@@ -884,4 +884,4 @@ static int __init init_hw_perf_events(void)
return 0;
}
early_initcall(init_hw_perf_events);
pure_initcall(init_hw_perf_events);

10
arch/loongarch/vdso/Makefile
View File

@@ -84,13 +84,3 @@ $(obj)/vdso.so: $(obj)/vdso.so.dbg FORCE
obj-y += vdso.o
$(obj)/vdso.o : $(obj)/vdso.so
# install commands for the unstripped file
quiet_cmd_vdso_install = INSTALL $@
cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
vdso.so: $(obj)/vdso.so.dbg
@mkdir -p $(MODLIB)/vdso
$(call cmd,vdso_install)
vdso_install: vdso.so

4
arch/m68k/kernel/entry.S
View File

@@ -433,7 +433,9 @@ resume:
movec %a0,%dfc
/* restore status register */
movew %a1@(TASK_THREAD+THREAD_SR),%sr
movew %a1@(TASK_THREAD+THREAD_SR),%d0
oriw #0x0700,%d0
movew %d0,%sr
rts

36
arch/m68k/mac/misc.c
View File

@@ -451,30 +451,18 @@ void mac_poweroff(void)
void mac_reset(void)
{
if (macintosh_config->adb_type == MAC_ADB_II &&
macintosh_config->ident != MAC_MODEL_SE30) {
/* need ROMBASE in booter */
/* indeed, plus need to MAP THE ROM !! */
if (mac_bi_data.rombase == 0)
mac_bi_data.rombase = 0x40800000;
/* works on some */
rom_reset = (void *) (mac_bi_data.rombase + 0xa);
local_irq_disable();
rom_reset();
#ifdef CONFIG_ADB_CUDA
} else if (macintosh_config->adb_type == MAC_ADB_EGRET ||
macintosh_config->adb_type == MAC_ADB_CUDA) {
if (macintosh_config->adb_type == MAC_ADB_EGRET ||
macintosh_config->adb_type == MAC_ADB_CUDA) {
cuda_restart();
} else
#endif
#ifdef CONFIG_ADB_PMU
} else if (macintosh_config->adb_type == MAC_ADB_PB2) {
if (macintosh_config->adb_type == MAC_ADB_PB2) {
pmu_restart();
} else
#endif
} else if (CPU_IS_030) {
if (CPU_IS_030) {
/* 030-specific reset routine. The idea is general, but the
* specific registers to reset are '030-specific. Until I
* have a non-030 machine, I can't test anything else.
@@ -522,6 +510,18 @@ void mac_reset(void)
"jmp %/a0@\n\t" /* jump to the reset vector */
".chip 68k"
: : "r" (offset), "a" (rombase) : "a0");
} else {
/* need ROMBASE in booter */
/* indeed, plus need to MAP THE ROM !! */
if (mac_bi_data.rombase == 0)
mac_bi_data.rombase = 0x40800000;
/* works on some */
rom_reset = (void *)(mac_bi_data.rombase + 0xa);
local_irq_disable();
rom_reset();
}
/* should never get here */

1
arch/microblaze/kernel/Makefile
View File

@@ -7,7 +7,6 @@ ifdef CONFIG_FUNCTION_TRACER
# Do not trace early boot code and low level code
CFLAGS_REMOVE_timer.o = -pg
CFLAGS_REMOVE_intc.o = -pg
CFLAGS_REMOVE_early_printk.o = -pg
CFLAGS_REMOVE_ftrace.o = -pg
CFLAGS_REMOVE_process.o = -pg
endif

2
arch/microblaze/kernel/cpu/cpuinfo-static.c
View File

@@ -18,7 +18,7 @@ static const char family_string[] = CONFIG_XILINX_MICROBLAZE0_FAMILY;
static const char cpu_ver_string[] = CONFIG_XILINX_MICROBLAZE0_HW_VER;
#define err_printk(x) \
early_printk("ERROR: Microblaze " x "-different for kernel and DTS\n");
pr_err("ERROR: Microblaze " x "-different for kernel and DTS\n");
void __init set_cpuinfo_static(struct cpuinfo *ci, struct device_node *cpu)
{

42
arch/openrisc/kernel/traps.c
View File

@@ -180,29 +180,39 @@ asmlinkage void unhandled_exception(struct pt_regs *regs, int ea, int vector)
asmlinkage void do_fpe_trap(struct pt_regs *regs, unsigned long address)
{
int code = FPE_FLTUNK;
unsigned long fpcsr = regs->fpcsr;
if (user_mode(regs)) {
int code = FPE_FLTUNK;
unsigned long fpcsr = regs->fpcsr;
if (fpcsr & SPR_FPCSR_IVF)
code = FPE_FLTINV;
else if (fpcsr & SPR_FPCSR_OVF)
code = FPE_FLTOVF;
else if (fpcsr & SPR_FPCSR_UNF)
code = FPE_FLTUND;
else if (fpcsr & SPR_FPCSR_DZF)
code = FPE_FLTDIV;
else if (fpcsr & SPR_FPCSR_IXF)
code = FPE_FLTRES;
if (fpcsr & SPR_FPCSR_IVF)
code = FPE_FLTINV;
else if (fpcsr & SPR_FPCSR_OVF)
code = FPE_FLTOVF;
else if (fpcsr & SPR_FPCSR_UNF)
code = FPE_FLTUND;
else if (fpcsr & SPR_FPCSR_DZF)
code = FPE_FLTDIV;
else if (fpcsr & SPR_FPCSR_IXF)
code = FPE_FLTRES;
/* Clear all flags */
regs->fpcsr &= ~SPR_FPCSR_ALLF;
/* Clear all flags */
regs->fpcsr &= ~SPR_FPCSR_ALLF;
force_sig_fault(SIGFPE, code, (void __user *)regs->pc);
force_sig_fault(SIGFPE, code, (void __user *)regs->pc);
} else {
pr_emerg("KERNEL: Illegal fpe exception 0x%.8lx\n", regs->pc);
die("Die:", regs, SIGFPE);
}
}
asmlinkage void do_trap(struct pt_regs *regs, unsigned long address)
{
force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->pc);
if (user_mode(regs)) {
force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->pc);
} else {
pr_emerg("KERNEL: Illegal trap exception 0x%.8lx\n", regs->pc);
die("Die:", regs, SIGILL);
}
}
asmlinkage void do_unaligned_access(struct pt_regs *regs, unsigned long address)

8
arch/parisc/Makefile
View File

@@ -177,12 +177,8 @@ vdso_prepare: prepare0
$(Q)$(MAKE) $(build)=arch/parisc/kernel/vdso32 include/generated/vdso32-offsets.h
endif
PHONY += vdso_install
vdso_install:
$(Q)$(MAKE) $(build)=arch/parisc/kernel/vdso $@
$(if $(CONFIG_COMPAT_VDSO), \
$(Q)$(MAKE) $(build)=arch/parisc/kernel/vdso32 $@)
vdso-install-y += arch/parisc/kernel/vdso32/vdso32.so
vdso-install-$(CONFIG_64BIT) += arch/parisc/kernel/vdso64/vdso64.so
install: KBUILD_IMAGE := vmlinux
zinstall: KBUILD_IMAGE := vmlinuz

1
arch/parisc/kernel/parisc_ksyms.c
View File

@@ -22,6 +22,7 @@ EXPORT_SYMBOL(memset);
#include <linux/atomic.h>
EXPORT_SYMBOL(__xchg8);
EXPORT_SYMBOL(__xchg32);
EXPORT_SYMBOL(__cmpxchg_u8);
EXPORT_SYMBOL(__cmpxchg_u32);
EXPORT_SYMBOL(__cmpxchg_u64);
#ifdef CONFIG_SMP

2
arch/powerpc/include/asm/hvcall.h
View File

@@ -540,7 +540,7 @@ struct hvcall_mpp_data {
unsigned long backing_mem;
};
int h_get_mpp(struct hvcall_mpp_data *);
long h_get_mpp(struct hvcall_mpp_data *mpp_data);
struct hvcall_mpp_x_data {
unsigned long coalesced_bytes;

6
arch/powerpc/platforms/pseries/lpar.c
View File

@@ -1886,10 +1886,10 @@ out:
* h_get_mpp
* H_GET_MPP hcall returns info in 7 parms
*/
int h_get_mpp(struct hvcall_mpp_data *mpp_data)
long h_get_mpp(struct hvcall_mpp_data *mpp_data)
{
int rc;
unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
unsigned long retbuf[PLPAR_HCALL9_BUFSIZE] = {0};
long rc;
rc = plpar_hcall9(H_GET_MPP, retbuf);

10
arch/powerpc/platforms/pseries/lparcfg.c
View File

@@ -113,8 +113,8 @@ struct hvcall_ppp_data {
*/
static unsigned int h_get_ppp(struct hvcall_ppp_data *ppp_data)
{
unsigned long rc;
unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
unsigned long retbuf[PLPAR_HCALL9_BUFSIZE] = {0};
long rc;
rc = plpar_hcall9(H_GET_PPP, retbuf);
@@ -193,7 +193,7 @@ static void parse_ppp_data(struct seq_file *m)
struct hvcall_ppp_data ppp_data;
struct device_node *root;
const __be32 *perf_level;
int rc;
long rc;
rc = h_get_ppp(&ppp_data);
if (rc)
@@ -357,8 +357,8 @@ static int read_dt_lpar_name(struct seq_file *m)
static void read_lpar_name(struct seq_file *m)
{
if (read_rtas_lpar_name(m) && read_dt_lpar_name(m))
pr_err_once("Error can't get the LPAR name");
if (read_rtas_lpar_name(m))
read_dt_lpar_name(m);
}
#define SPLPAR_MAXLENGTH 1026*(sizeof(char))

2
arch/powerpc/sysdev/fsl_msi.c
View File

@@ -568,10 +568,12 @@ static const struct fsl_msi_feature ipic_msi_feature = {
.msiir_offset = 0x38,
};
#ifdef CONFIG_EPAPR_PARAVIRT
static const struct fsl_msi_feature vmpic_msi_feature = {
.fsl_pic_ip = FSL_PIC_IP_VMPIC,
.msiir_offset = 0,
};
#endif
static const struct of_device_id fsl_of_msi_ids[] = {
{

9
arch/riscv/Makefile
View File

@@ -130,12 +130,6 @@ endif
libs-y += arch/riscv/lib/
libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a
PHONY += vdso_install
vdso_install:
$(Q)$(MAKE) $(build)=arch/riscv/kernel/vdso $@
$(if $(CONFIG_COMPAT),$(Q)$(MAKE) \
$(build)=arch/riscv/kernel/compat_vdso compat_$@)
ifeq ($(KBUILD_EXTMOD),)
ifeq ($(CONFIG_MMU),y)
prepare: vdso_prepare
@@ -147,6 +141,9 @@ vdso_prepare: prepare0
endif
endif
vdso-install-y += arch/riscv/kernel/vdso/vdso.so.dbg
vdso-install-$(CONFIG_COMPAT) += arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg:../compat_vdso/compat_vdso.so
ifneq ($(CONFIG_XIP_KERNEL),y)
ifeq ($(CONFIG_RISCV_M_MODE)$(CONFIG_ARCH_CANAAN),yy)
KBUILD_IMAGE := $(boot)/loader.bin

40
arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
View File

@@ -440,40 +440,6 @@
};
};
tdm_pins: tdm-0 {
tx-pins {
pinmux = <GPIOMUX(44, GPOUT_SYS_TDM_TXD,
GPOEN_ENABLE,
GPI_NONE)>;
bias-pull-up;
drive-strength = <2>;
input-disable;
input-schmitt-disable;
slew-rate = <0>;
};
rx-pins {
pinmux = <GPIOMUX(61, GPOUT_HIGH,
GPOEN_DISABLE,
GPI_SYS_TDM_RXD)>;
input-enable;
};
sync-pins {
pinmux = <GPIOMUX(63, GPOUT_HIGH,
GPOEN_DISABLE,
GPI_SYS_TDM_SYNC)>;
input-enable;
};
pcmclk-pins {
pinmux = <GPIOMUX(38, GPOUT_HIGH,
GPOEN_DISABLE,
GPI_SYS_TDM_CLK)>;
input-enable;
};
};
uart0_pins: uart0-0 {
tx-pins {
pinmux = <GPIOMUX(5, GPOUT_SYS_UART0_TX,
@@ -499,12 +465,6 @@
};
};
&tdm {
pinctrl-names = "default";
pinctrl-0 = <&tdm_pins>;
status = "okay";
};
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_pins>;

10
arch/riscv/kernel/compat_vdso/Makefile
View File

@@ -76,13 +76,3 @@ quiet_cmd_compat_vdsold = VDSOLD $@
# actual build commands
quiet_cmd_compat_vdsoas = VDSOAS $@
cmd_compat_vdsoas = $(COMPAT_CC) $(a_flags) $(COMPAT_CC_FLAGS) -c -o $@ $<
# install commands for the unstripped file
quiet_cmd_compat_vdso_install = INSTALL $@
cmd_compat_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/compat_vdso/$@
compat_vdso.so: $(obj)/compat_vdso.so.dbg
@mkdir -p $(MODLIB)/compat_vdso
$(call cmd,compat_vdso_install)
compat_vdso_install: compat_vdso.so

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

@@ -72,7 +72,7 @@ static int sbi_cpu_start(unsigned int cpuid, struct task_struct *tidle)
/* Make sure tidle is updated */
smp_mb();
bdata->task_ptr = tidle;
bdata->stack_ptr = task_stack_page(tidle) + THREAD_SIZE;
bdata->stack_ptr = task_pt_regs(tidle);
/* Make sure boot data is updated */
smp_mb();
hsm_data = __pa(bdata);

3
arch/riscv/kernel/cpu_ops_spinwait.c
View File

@@ -34,8 +34,7 @@ static void cpu_update_secondary_bootdata(unsigned int cpuid,
/* Make sure tidle is updated */
smp_mb();
WRITE_ONCE(__cpu_spinwait_stack_pointer[hartid],
task_stack_page(tidle) + THREAD_SIZE);
WRITE_ONCE(__cpu_spinwait_stack_pointer[hartid], task_pt_regs(tidle));
WRITE_ONCE(__cpu_spinwait_task_pointer[hartid], tidle);
}

20
arch/riscv/kernel/stacktrace.c
View File

@@ -18,6 +18,16 @@
extern asmlinkage void ret_from_exception(void);
static inline int fp_is_valid(unsigned long fp, unsigned long sp)
{
unsigned long low, high;
low = sp + sizeof(struct stackframe);
high = ALIGN(sp, THREAD_SIZE);
return !(fp < low || fp > high || fp & 0x07);
}
void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs,
bool (*fn)(void *, unsigned long), void *arg)
{
@@ -41,21 +51,19 @@ void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs,
}
for (;;) {
unsigned long low, high;
struct stackframe *frame;
if (unlikely(!__kernel_text_address(pc) || (level++ >= 0 && !fn(arg, pc))))
break;
/* Validate frame pointer */
low = sp + sizeof(struct stackframe);
high = ALIGN(sp, THREAD_SIZE);
if (unlikely(fp < low || fp > high || fp & 0x7))
if (unlikely(!fp_is_valid(fp, sp)))
break;
/* Unwind stack frame */
frame = (struct stackframe *)fp - 1;
sp = fp;
if (regs && (regs->epc == pc) && (frame->fp & 0x7)) {
if (regs && (regs->epc == pc) && fp_is_valid(frame->ra, sp)) {
/* We hit function where ra is not saved on the stack */
fp = frame->ra;
pc = regs->ra;
} else {

10
arch/riscv/kernel/vdso/Makefile
View File

@@ -73,13 +73,3 @@ quiet_cmd_vdsold = VDSOLD $@
cmd_vdsold = $(LD) $(ld_flags) -T $(filter-out FORCE,$^) -o $@.tmp && \
$(OBJCOPY) $(patsubst %, -G __vdso_%, $(vdso-syms)) $@.tmp $@ && \
rm $@.tmp
# install commands for the unstripped file
quiet_cmd_vdso_install = INSTALL $@
cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
vdso.so: $(obj)/vdso.so.dbg
@mkdir -p $(MODLIB)/vdso
$(call cmd,vdso_install)
vdso_install: vdso.so

20
arch/riscv/net/bpf_jit_comp64.c
View File

@@ -516,33 +516,33 @@ static void emit_atomic(u8 rd, u8 rs, s16 off, s32 imm, bool is64,
break;
/* src_reg = atomic_fetch_<op>(dst_reg + off16, src_reg) */
case BPF_ADD | BPF_FETCH:
emit(is64 ? rv_amoadd_d(rs, rs, rd, 0, 0) :
rv_amoadd_w(rs, rs, rd, 0, 0), ctx);
emit(is64 ? rv_amoadd_d(rs, rs, rd, 1, 1) :
rv_amoadd_w(rs, rs, rd, 1, 1), ctx);
if (!is64)
emit_zext_32(rs, ctx);
break;
case BPF_AND | BPF_FETCH:
emit(is64 ? rv_amoand_d(rs, rs, rd, 0, 0) :
rv_amoand_w(rs, rs, rd, 0, 0), ctx);
emit(is64 ? rv_amoand_d(rs, rs, rd, 1, 1) :
rv_amoand_w(rs, rs, rd, 1, 1), ctx);
if (!is64)
emit_zext_32(rs, ctx);
break;
case BPF_OR | BPF_FETCH:
emit(is64 ? rv_amoor_d(rs, rs, rd, 0, 0) :
rv_amoor_w(rs, rs, rd, 0, 0), ctx);
emit(is64 ? rv_amoor_d(rs, rs, rd, 1, 1) :
rv_amoor_w(rs, rs, rd, 1, 1), ctx);
if (!is64)
emit_zext_32(rs, ctx);
break;
case BPF_XOR | BPF_FETCH:
emit(is64 ? rv_amoxor_d(rs, rs, rd, 0, 0) :
rv_amoxor_w(rs, rs, rd, 0, 0), ctx);
emit(is64 ? rv_amoxor_d(rs, rs, rd, 1, 1) :
rv_amoxor_w(rs, rs, rd, 1, 1), ctx);
if (!is64)
emit_zext_32(rs, ctx);
break;
/* src_reg = atomic_xchg(dst_reg + off16, src_reg); */
case BPF_XCHG:
emit(is64 ? rv_amoswap_d(rs, rs, rd, 0, 0) :
rv_amoswap_w(rs, rs, rd, 0, 0), ctx);
emit(is64 ? rv_amoswap_d(rs, rs, rd, 1, 1) :
rv_amoswap_w(rs, rs, rd, 1, 1), ctx);
if (!is64)
emit_zext_32(rs, ctx);
break;

6
arch/s390/Makefile
View File

@@ -138,9 +138,6 @@ bzImage: vmlinux
zfcpdump:
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
vdso_install:
$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
archheaders:
$(Q)$(MAKE) $(build)=$(syscalls) uapi
@@ -160,6 +157,9 @@ vdso_prepare: prepare0
$(if $(CONFIG_COMPAT),$(Q)$(MAKE) \
$(build)=arch/s390/kernel/vdso32 include/generated/vdso32-offsets.h)
vdso-install-y += arch/s390/kernel/vdso64/vdso64.so.dbg
vdso-install-$(CONFIG_COMPAT) += arch/s390/kernel/vdso32/vdso32.so.dbg
ifdef CONFIG_EXPOLINE_EXTERN
modules_prepare: expoline_prepare
expoline_prepare: scripts

1
arch/s390/boot/startup.c
View File

@@ -31,7 +31,6 @@ unsigned long __bootdata_preserved(max_mappable);
unsigned long __bootdata(ident_map_size);
u64 __bootdata_preserved(stfle_fac_list[16]);
u64 __bootdata_preserved(alt_stfle_fac_list[16]);
struct oldmem_data __bootdata_preserved(oldmem_data);
struct machine_info machine;

2
arch/s390/include/asm/gmap.h
View File

@@ -146,7 +146,7 @@ int gmap_mprotect_notify(struct gmap *, unsigned long start,
void gmap_sync_dirty_log_pmd(struct gmap *gmap, unsigned long dirty_bitmap[4],
unsigned long gaddr, unsigned long vmaddr);
int gmap_mark_unmergeable(void);
int s390_disable_cow_sharing(void);
void s390_unlist_old_asce(struct gmap *gmap);
int s390_replace_asce(struct gmap *gmap);
void s390_uv_destroy_pfns(unsigned long count, unsigned long *pfns);

5
arch/s390/include/asm/mmu.h
View File

@@ -33,6 +33,11 @@ typedef struct {
unsigned int uses_skeys:1;
/* The mmu context uses CMM. */
unsigned int uses_cmm:1;
/*
* The mmu context allows COW-sharing of memory pages (KSM, zeropage).
* Note that COW-sharing during fork() is currently always allowed.
*/
unsigned int allow_cow_sharing:1;
/* The gmaps associated with this context are allowed to use huge pages. */
unsigned int allow_gmap_hpage_1m:1;
} mm_context_t;

1
arch/s390/include/asm/mmu_context.h
View File

@@ -36,6 +36,7 @@ static inline int init_new_context(struct task_struct *tsk,
mm->context.has_pgste = 0;
mm->context.uses_skeys = 0;
mm->context.uses_cmm = 0;
mm->context.allow_cow_sharing = 1;
mm->context.allow_gmap_hpage_1m = 0;
#endif
switch (mm->context.asce_limit) {

16
arch/s390/include/asm/pgtable.h
View File

@@ -565,10 +565,20 @@ static inline pud_t set_pud_bit(pud_t pud, pgprot_t prot)
}
/*
* In the case that a guest uses storage keys
* faults should no longer be backed by zero pages
* As soon as the guest uses storage keys or enables PV, we deduplicate all
* mapped shared zeropages and prevent new shared zeropages from getting
* mapped.
*/
#define mm_forbids_zeropage mm_has_pgste
#define mm_forbids_zeropage mm_forbids_zeropage
static inline int mm_forbids_zeropage(struct mm_struct *mm)
{
#ifdef CONFIG_PGSTE
if (!mm->context.allow_cow_sharing)
return 1;
#endif
return 0;
}
static inline int mm_uses_skeys(struct mm_struct *mm)
{
#ifdef CONFIG_PGSTE

10
arch/s390/kernel/ipl.c
View File

@@ -962,8 +962,8 @@ static ssize_t reipl_nvme_scpdata_write(struct file *filp, struct kobject *kobj,
scpdata_len += padding;
}
reipl_block_nvme->hdr.len = IPL_BP_FCP_LEN + scpdata_len;
reipl_block_nvme->nvme.len = IPL_BP0_FCP_LEN + scpdata_len;
reipl_block_nvme->hdr.len = IPL_BP_NVME_LEN + scpdata_len;
reipl_block_nvme->nvme.len = IPL_BP0_NVME_LEN + scpdata_len;
reipl_block_nvme->nvme.scp_data_len = scpdata_len;
return count;
@@ -1858,9 +1858,9 @@ static int __init dump_nvme_init(void)
}
dump_block_nvme->hdr.len = IPL_BP_NVME_LEN;
dump_block_nvme->hdr.version = IPL_PARM_BLOCK_VERSION;
dump_block_nvme->fcp.len = IPL_BP0_NVME_LEN;
dump_block_nvme->fcp.pbt = IPL_PBT_NVME;
dump_block_nvme->fcp.opt = IPL_PB0_NVME_OPT_DUMP;
dump_block_nvme->nvme.len = IPL_BP0_NVME_LEN;
dump_block_nvme->nvme.pbt = IPL_PBT_NVME;
dump_block_nvme->nvme.opt = IPL_PB0_NVME_OPT_DUMP;
dump_capabilities |= DUMP_TYPE_NVME;
return 0;
}

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

@@ -155,7 +155,7 @@ unsigned int __bootdata_preserved(zlib_dfltcc_support);
EXPORT_SYMBOL(zlib_dfltcc_support);
u64 __bootdata_preserved(stfle_fac_list[16]);
EXPORT_SYMBOL(stfle_fac_list);
u64 __bootdata_preserved(alt_stfle_fac_list[16]);
u64 alt_stfle_fac_list[16];
struct oldmem_data __bootdata_preserved(oldmem_data);
unsigned long VMALLOC_START;

14
arch/s390/kernel/vdso32/Makefile
View File

@@ -19,8 +19,10 @@ KBUILD_AFLAGS_32 := $(filter-out -m64,$(KBUILD_AFLAGS))
KBUILD_AFLAGS_32 += -m31 -s
KBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS))
KBUILD_CFLAGS_32 := $(filter-out -mpacked-stack,$(KBUILD_CFLAGS))
KBUILD_CFLAGS_32 := $(filter-out -mno-pic-data-is-text-relative,$(KBUILD_CFLAGS_32))
KBUILD_CFLAGS_32 += -m31 -fPIC -shared -fno-common -fno-builtin
KBUILD_CFLAGS_32 := $(filter-out -fno-asynchronous-unwind-tables,$(KBUILD_CFLAGS_32))
KBUILD_CFLAGS_32 += -m31 -fPIC -shared -fno-common -fno-builtin -fasynchronous-unwind-tables
LDFLAGS_vdso32.so.dbg += -shared -soname=linux-vdso32.so.1 \
--hash-style=both --build-id=sha1 -melf_s390 -T
@@ -61,16 +63,6 @@ quiet_cmd_vdso32as = VDSO32A $@
quiet_cmd_vdso32cc = VDSO32C $@
cmd_vdso32cc = $(CC) $(c_flags) -c -o $@ $<
# install commands for the unstripped file
quiet_cmd_vdso_install = INSTALL $@
cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
vdso32.so: $(obj)/vdso32.so.dbg
@mkdir -p $(MODLIB)/vdso
$(call cmd,vdso_install)
vdso_install: vdso32.so
# Generate VDSO offsets using helper script
gen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh
quiet_cmd_vdsosym = VDSOSYM $@

15
arch/s390/kernel/vdso64/Makefile
View File

@@ -24,8 +24,11 @@ KBUILD_AFLAGS_64 := $(filter-out -m64,$(KBUILD_AFLAGS))
KBUILD_AFLAGS_64 += -m64
KBUILD_CFLAGS_64 := $(filter-out -m64,$(KBUILD_CFLAGS))
KBUILD_CFLAGS_64 := $(filter-out -mpacked-stack,$(KBUILD_CFLAGS_64))
KBUILD_CFLAGS_64 := $(filter-out -mno-pic-data-is-text-relative,$(KBUILD_CFLAGS_64))
KBUILD_CFLAGS_64 += -m64 -fPIC -fno-common -fno-builtin
KBUILD_CFLAGS_64 := $(filter-out -munaligned-symbols,$(KBUILD_CFLAGS_64))
KBUILD_CFLAGS_64 := $(filter-out -fno-asynchronous-unwind-tables,$(KBUILD_CFLAGS_64))
KBUILD_CFLAGS_64 += -m64 -fPIC -fno-common -fno-builtin -fasynchronous-unwind-tables
ldflags-y := -shared -soname=linux-vdso64.so.1 \
--hash-style=both --build-id=sha1 -T
@@ -70,16 +73,6 @@ quiet_cmd_vdso64as = VDSO64A $@
quiet_cmd_vdso64cc = VDSO64C $@
cmd_vdso64cc = $(CC) $(c_flags) -c -o $@ $<
# install commands for the unstripped file
quiet_cmd_vdso_install = INSTALL $@
cmd_vdso_install = cp $(obj)/$@.dbg $(MODLIB)/vdso/$@
vdso64.so: $(obj)/vdso64.so.dbg
@mkdir -p $(MODLIB)/vdso
$(call cmd,vdso_install)
vdso_install: vdso64.so
# Generate VDSO offsets using helper script
gen-vdsosym := $(srctree)/$(src)/gen_vdso_offsets.sh
quiet_cmd_vdsosym = VDSOSYM $@

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

@@ -2632,9 +2632,7 @@ static int kvm_s390_handle_pv(struct kvm *kvm, struct kvm_pv_cmd *cmd)
if (r)
break;
mmap_write_lock(current->mm);
r = gmap_mark_unmergeable();
mmap_write_unlock(current->mm);
r = s390_disable_cow_sharing();
if (r)
break;

165
arch/s390/mm/gmap.c
View File

@@ -2547,41 +2547,6 @@ static inline void thp_split_mm(struct mm_struct *mm)
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
/*
* Remove all empty zero pages from the mapping for lazy refaulting
* - This must be called after mm->context.has_pgste is set, to avoid
* future creation of zero pages
* - This must be called after THP was disabled.
*
* mm contracts with s390, that even if mm were to remove a page table,
* racing with the loop below and so causing pte_offset_map_lock() to fail,
* it will never insert a page table containing empty zero pages once
* mm_forbids_zeropage(mm) i.e. mm->context.has_pgste is set.
*/
static int __zap_zero_pages(pmd_t *pmd, unsigned long start,
unsigned long end, struct mm_walk *walk)
{
unsigned long addr;
for (addr = start; addr != end; addr += PAGE_SIZE) {
pte_t *ptep;
spinlock_t *ptl;
ptep = pte_offset_map_lock(walk->mm, pmd, addr, &ptl);
if (!ptep)
break;
if (is_zero_pfn(pte_pfn(*ptep)))
ptep_xchg_direct(walk->mm, addr, ptep, __pte(_PAGE_INVALID));
pte_unmap_unlock(ptep, ptl);
}
return 0;
}
static const struct mm_walk_ops zap_zero_walk_ops = {
.pmd_entry = __zap_zero_pages,
.walk_lock = PGWALK_WRLOCK,
};
/*
* switch on pgstes for its userspace process (for kvm)
*/
@@ -2599,22 +2564,142 @@ int s390_enable_sie(void)
mm->context.has_pgste = 1;
/* split thp mappings and disable thp for future mappings */
thp_split_mm(mm);
walk_page_range(mm, 0, TASK_SIZE, &zap_zero_walk_ops, NULL);
mmap_write_unlock(mm);
return 0;
}
EXPORT_SYMBOL_GPL(s390_enable_sie);
int gmap_mark_unmergeable(void)
static int find_zeropage_pte_entry(pte_t *pte, unsigned long addr,
unsigned long end, struct mm_walk *walk)
{
unsigned long *found_addr = walk->private;
/* Return 1 of the page is a zeropage. */
if (is_zero_pfn(pte_pfn(*pte))) {
/*
* Shared zeropage in e.g., a FS DAX mapping? We cannot do the
* right thing and likely don't care: FAULT_FLAG_UNSHARE
* currently only works in COW mappings, which is also where
* mm_forbids_zeropage() is checked.
*/
if (!is_cow_mapping(walk->vma->vm_flags))
return -EFAULT;
*found_addr = addr;
return 1;
}
return 0;
}
static const struct mm_walk_ops find_zeropage_ops = {
.pte_entry = find_zeropage_pte_entry,
.walk_lock = PGWALK_WRLOCK,
};
/*
* Unshare all shared zeropages, replacing them by anonymous pages. Note that
* we cannot simply zap all shared zeropages, because this could later
* trigger unexpected userfaultfd missing events.
*
* This must be called after mm->context.allow_cow_sharing was
* set to 0, to avoid future mappings of shared zeropages.
*
* mm contracts with s390, that even if mm were to remove a page table,
* and racing with walk_page_range_vma() calling pte_offset_map_lock()
* would fail, it will never insert a page table containing empty zero
* pages once mm_forbids_zeropage(mm) i.e.
* mm->context.allow_cow_sharing is set to 0.
*/
static int __s390_unshare_zeropages(struct mm_struct *mm)
{
struct vm_area_struct *vma;
VMA_ITERATOR(vmi, mm, 0);
unsigned long addr;
vm_fault_t fault;
int rc;
for_each_vma(vmi, vma) {
/*
* We could only look at COW mappings, but it's more future
* proof to catch unexpected zeropages in other mappings and
* fail.
*/
if ((vma->vm_flags & VM_PFNMAP) || is_vm_hugetlb_page(vma))
continue;
addr = vma->vm_start;
retry:
rc = walk_page_range_vma(vma, addr, vma->vm_end,
&find_zeropage_ops, &addr);
if (rc < 0)
return rc;
else if (!rc)
continue;
/* addr was updated by find_zeropage_pte_entry() */
fault = handle_mm_fault(vma, addr,
FAULT_FLAG_UNSHARE | FAULT_FLAG_REMOTE,
NULL);
if (fault & VM_FAULT_OOM)
return -ENOMEM;
/*
* See break_ksm(): even after handle_mm_fault() returned 0, we
* must start the lookup from the current address, because
* handle_mm_fault() may back out if there's any difficulty.
*
* VM_FAULT_SIGBUS and VM_FAULT_SIGSEGV are unexpected but
* maybe they could trigger in the future on concurrent
* truncation. In that case, the shared zeropage would be gone
* and we can simply retry and make progress.
*/
cond_resched();
goto retry;
}
return 0;
}
static int __s390_disable_cow_sharing(struct mm_struct *mm)
{
int rc;
if (!mm->context.allow_cow_sharing)
return 0;
mm->context.allow_cow_sharing = 0;
/* Replace all shared zeropages by anonymous pages. */
rc = __s390_unshare_zeropages(mm);
/*
* Make sure to disable KSM (if enabled for the whole process or
* individual VMAs). Note that nothing currently hinders user space
* from re-enabling it.
*/
return ksm_disable(current->mm);
if (!rc)
rc = ksm_disable(mm);
if (rc)
mm->context.allow_cow_sharing = 1;
return rc;
}
EXPORT_SYMBOL_GPL(gmap_mark_unmergeable);
/*
* Disable most COW-sharing of memory pages for the whole process:
* (1) Disable KSM and unmerge/unshare any KSM pages.
* (2) Disallow shared zeropages and unshare any zerpages that are mapped.
*
* Not that we currently don't bother with COW-shared pages that are shared
* with parent/child processes due to fork().
*/
int s390_disable_cow_sharing(void)
{
int rc;
mmap_write_lock(current->mm);
rc = __s390_disable_cow_sharing(current->mm);
mmap_write_unlock(current->mm);
return rc;
}
EXPORT_SYMBOL_GPL(s390_disable_cow_sharing);
/*
* Enable storage key handling from now on and initialize the storage
@@ -2683,7 +2768,7 @@ int s390_enable_skey(void)
goto out_up;
mm->context.uses_skeys = 1;
rc = gmap_mark_unmergeable();
rc = __s390_disable_cow_sharing(mm);
if (rc) {
mm->context.uses_skeys = 0;
goto out_up;

8
arch/s390/net/bpf_jit_comp.c
View File

@@ -1311,8 +1311,12 @@ static noinline int bpf_jit_insn(struct bpf_jit *jit, struct bpf_prog *fp,
EMIT6_DISP_LH(0xeb000000, is32 ? (op32) : (op64), \
(insn->imm & BPF_FETCH) ? src_reg : REG_W0, \
src_reg, dst_reg, off); \
if (is32 && (insn->imm & BPF_FETCH)) \
EMIT_ZERO(src_reg); \
if (insn->imm & BPF_FETCH) { \
/* bcr 14,0 - see atomic_fetch_{add,and,or,xor}() */ \
_EMIT2(0x07e0); \
if (is32) \
EMIT_ZERO(src_reg); \
} \
} while (0)
case BPF_ADD:
case BPF_ADD | BPF_FETCH:

7
arch/sh/kernel/kprobes.c
View File

@@ -44,17 +44,12 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
if (OPCODE_RTE(opcode))
return -EFAULT; /* Bad breakpoint */
memcpy(p->ainsn.insn, p->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t));
p->opcode = opcode;
return 0;
}
void __kprobes arch_copy_kprobe(struct kprobe *p)
{
memcpy(p->ainsn.insn, p->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t));
p->opcode = *p->addr;
}
void __kprobes arch_arm_kprobe(struct kprobe *p)
{
*p->addr = BREAKPOINT_INSTRUCTION;

67
arch/sh/lib/checksum.S
View File

@@ -33,7 +33,8 @@
*/
/*
* asmlinkage __wsum csum_partial(const void *buf, int len, __wsum sum);
* unsigned int csum_partial(const unsigned char *buf, int len,
* unsigned int sum);
*/
.text
@@ -45,31 +46,11 @@ ENTRY(csum_partial)
* Fortunately, it is easy to convert 2-byte alignment to 4-byte
* alignment for the unrolled loop.
*/
mov r5, r1
mov r4, r0
tst #3, r0 ! Check alignment.
bt/s 2f ! Jump if alignment is ok.
mov r4, r7 ! Keep a copy to check for alignment
tst #2, r0 ! Check alignment.
bt 2f ! Jump if alignment is ok.
!
tst #1, r0 ! Check alignment.
bt 21f ! Jump if alignment is boundary of 2bytes.
! buf is odd
tst r5, r5
add #-1, r5
bt 9f
mov.b @r4+, r0
extu.b r0, r0
addc r0, r6 ! t=0 from previous tst
mov r6, r0
shll8 r6
shlr16 r0
shlr8 r0
or r0, r6
mov r4, r0
tst #2, r0
bt 2f
21:
! buf is 2 byte aligned (len could be 0)
add #-2, r5 ! Alignment uses up two bytes.
cmp/pz r5 !
bt/s 1f ! Jump if we had at least two bytes.
@@ -77,17 +58,16 @@ ENTRY(csum_partial)
bra 6f
add #2, r5 ! r5 was < 2. Deal with it.
1:
mov r5, r1 ! Save new len for later use.
mov.w @r4+, r0
extu.w r0, r0
addc r0, r6
bf 2f
add #1, r6
2:
! buf is 4 byte aligned (len could be 0)
mov r5, r1
mov #-5, r0
shld r0, r1
tst r1, r1
shld r0, r5
tst r5, r5
bt/s 4f ! if it's =0, go to 4f
clrt
.align 2
@@ -109,31 +89,30 @@ ENTRY(csum_partial)
addc r0, r6
addc r2, r6
movt r0
dt r1
dt r5
bf/s 3b
cmp/eq #1, r0
! here, we know r1==0
addc r1, r6 ! add carry to r6
! here, we know r5==0
addc r5, r6 ! add carry to r6
4:
mov r5, r0
mov r1, r0
and #0x1c, r0
tst r0, r0
bt 6f
! 4 bytes or more remaining
mov r0, r1
shlr2 r1
bt/s 6f
mov r0, r5
shlr2 r5
mov #0, r2
5:
addc r2, r6
mov.l @r4+, r2
movt r0
dt r1
dt r5
bf/s 5b
cmp/eq #1, r0
addc r2, r6
addc r1, r6 ! r1==0 here, so it means add carry-bit
addc r5, r6 ! r5==0 here, so it means add carry-bit
6:
! 3 bytes or less remaining
mov r1, r5
mov #3, r0
and r0, r5
tst r5, r5
@@ -159,16 +138,6 @@ ENTRY(csum_partial)
mov #0, r0
addc r0, r6
9:
! Check if the buffer was misaligned, if so realign sum
mov r7, r0
tst #1, r0
bt 10f
mov r6, r0
shll8 r6
shlr16 r0
shlr8 r0
or r0, r6
10:
rts
mov r6, r0

5
arch/sparc/Makefile
View File

@@ -76,9 +76,8 @@ install:
archheaders:
$(Q)$(MAKE) $(build)=arch/sparc/kernel/syscalls all
PHONY += vdso_install
vdso_install:
$(Q)$(MAKE) $(build)=arch/sparc/vdso $@
vdso-install-$(CONFIG_SPARC64) += arch/sparc/vdso/vdso64.so.dbg
vdso-install-$(CONFIG_COMPAT) += arch/sparc/vdso/vdso32.so.dbg
# This is the image used for packaging
KBUILD_IMAGE := $(boot)/zImage

27
arch/sparc/vdso/Makefile
View File

@@ -116,30 +116,3 @@ quiet_cmd_vdso = VDSO $@
VDSO_LDFLAGS = -shared --hash-style=both --build-id=sha1 -Bsymbolic
GCOV_PROFILE := n
#
# Install the unstripped copies of vdso*.so. If our toolchain supports
# build-id, install .build-id links as well.
#
quiet_cmd_vdso_install = INSTALL $(@:install_%=%)
define cmd_vdso_install
cp $< "$(MODLIB)/vdso/$(@:install_%=%)"; \
if readelf -n $< |grep -q 'Build ID'; then \
buildid=`readelf -n $< |grep 'Build ID' |sed -e 's/^.*Build ID: \(.*\)$$/\1/'`; \
first=`echo $$buildid | cut -b-2`; \
last=`echo $$buildid | cut -b3-`; \
mkdir -p "$(MODLIB)/vdso/.build-id/$$first"; \
ln -sf "../../$(@:install_%=%)" "$(MODLIB)/vdso/.build-id/$$first/$$last.debug"; \
fi
endef
vdso_img_insttargets := $(vdso_img_sodbg:%.dbg=install_%)
$(MODLIB)/vdso: FORCE
@mkdir -p $(MODLIB)/vdso
$(vdso_img_insttargets): install_%: $(obj)/%.dbg $(MODLIB)/vdso FORCE
$(call cmd,vdso_install)
PHONY += vdso_install $(vdso_img_insttargets)
vdso_install: $(vdso_img_insttargets) FORCE

14
arch/um/drivers/line.c
View File

@@ -673,24 +673,26 @@ void register_winch_irq(int fd, int tty_fd, int pid, struct tty_port *port,
goto cleanup;
}
*winch = ((struct winch) { .list = LIST_HEAD_INIT(winch->list),
.fd = fd,
*winch = ((struct winch) { .fd = fd,
.tty_fd = tty_fd,
.pid = pid,
.port = port,
.stack = stack });
spin_lock(&winch_handler_lock);
list_add(&winch->list, &winch_handlers);
spin_unlock(&winch_handler_lock);
if (um_request_irq(WINCH_IRQ, fd, IRQ_READ, winch_interrupt,
IRQF_SHARED, "winch", winch) < 0) {
printk(KERN_ERR "register_winch_irq - failed to register "
"IRQ\n");
spin_lock(&winch_handler_lock);
list_del(&winch->list);
spin_unlock(&winch_handler_lock);
goto out_free;
}
spin_lock(&winch_handler_lock);
list_add(&winch->list, &winch_handlers);
spin_unlock(&winch_handler_lock);
return;
out_free:

4
arch/um/drivers/ubd_kern.c
View File

@@ -1099,7 +1099,7 @@ static int __init ubd_init(void)
if (irq_req_buffer == NULL) {
printk(KERN_ERR "Failed to initialize ubd buffering\n");
return -1;
return -ENOMEM;
}
io_req_buffer = kmalloc_array(UBD_REQ_BUFFER_SIZE,
sizeof(struct io_thread_req *),
@@ -1110,7 +1110,7 @@ static int __init ubd_init(void)
if (io_req_buffer == NULL) {
printk(KERN_ERR "Failed to initialize ubd buffering\n");
return -1;
return -ENOMEM;
}
platform_driver_register(&ubd_driver);
mutex_lock(&ubd_lock);

2
arch/um/drivers/vector_kern.c
View File

@@ -141,7 +141,7 @@ static bool get_bpf_flash(struct arglist *def)
if (allow != NULL) {
if (kstrtoul(allow, 10, &result) == 0)
return (allow > 0);
return result > 0;
}
return false;
}

1
arch/um/include/asm/kasan.h
View File

@@ -24,7 +24,6 @@
#ifdef CONFIG_KASAN
void kasan_init(void);
void kasan_map_memory(void *start, unsigned long len);
extern int kasan_um_is_ready;
#ifdef CONFIG_STATIC_LINK

2
arch/um/include/asm/mmu.h
View File

@@ -15,8 +15,6 @@ typedef struct mm_context {
struct page *stub_pages[2];
} mm_context_t;
extern void __switch_mm(struct mm_id * mm_idp);
/* Avoid tangled inclusion with asm/ldt.h */
extern long init_new_ldt(struct mm_context *to_mm, struct mm_context *from_mm);
extern void free_ldt(struct mm_context *mm);

1
arch/um/include/asm/processor-generic.h
View File

@@ -95,7 +95,6 @@ extern struct cpuinfo_um boot_cpu_data;
#define current_cpu_data boot_cpu_data
#define cache_line_size() (boot_cpu_data.cache_alignment)
extern unsigned long get_thread_reg(int reg, jmp_buf *buf);
#define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf)
extern unsigned long __get_wchan(struct task_struct *p);

2
arch/um/include/shared/kern_util.h
View File

@@ -67,4 +67,6 @@ extern void fatal_sigsegv(void) __attribute__ ((noreturn));
void um_idle_sleep(void);
void kasan_map_memory(void *start, size_t len);
#endif

2
arch/um/include/shared/skas/mm_id.h
View File

@@ -15,4 +15,6 @@ struct mm_id {
int kill;
};
void __switch_mm(struct mm_id *mm_idp);
#endif

1
arch/um/os-Linux/mem.c
View File

@@ -15,6 +15,7 @@
#include <sys/vfs.h>
#include <linux/magic.h>
#include <init.h>
#include <kern_util.h>
#include <os.h>
/*

8
arch/x86/Kconfig
View File

@@ -2428,9 +2428,13 @@ menuconfig CPU_MITIGATIONS
help
Say Y here to enable options which enable mitigations for hardware
vulnerabilities (usually related to speculative execution).
Mitigations can be disabled or restricted to SMT systems at runtime
via the "mitigations" kernel parameter.
If you say N, all mitigations will be disabled. You really
should know what you are doing to say so.
If you say N, all mitigations will be disabled. This CANNOT be
overridden at runtime.
Say 'Y', unless you really know what you are doing.
if CPU_MITIGATIONS

5
arch/x86/Kconfig.debug
View File

@@ -248,6 +248,7 @@ config UNWINDER_ORC
config UNWINDER_FRAME_POINTER
bool "Frame pointer unwinder"
select ARCH_WANT_FRAME_POINTERS
select FRAME_POINTER
help
This option enables the frame pointer unwinder for unwinding kernel
@@ -271,7 +272,3 @@ config UNWINDER_GUESS
overhead.
endchoice
config FRAME_POINTER
depends on !UNWINDER_ORC && !UNWINDER_GUESS
bool

7
arch/x86/Makefile
View File

@@ -291,9 +291,10 @@ PHONY += install
install:
$(call cmd,install)
PHONY += vdso_install
vdso_install:
$(Q)$(MAKE) $(build)=arch/x86/entry/vdso $@
vdso-install-$(CONFIG_X86_64) += arch/x86/entry/vdso/vdso64.so.dbg
vdso-install-$(CONFIG_X86_X32_ABI) += arch/x86/entry/vdso/vdsox32.so.dbg
vdso-install-$(CONFIG_X86_32) += arch/x86/entry/vdso/vdso32.so.dbg
vdso-install-$(CONFIG_IA32_EMULATION) += arch/x86/entry/vdso/vdso32.so.dbg
archprepare: checkbin
checkbin:

5
arch/x86/boot/compressed/head_64.S
View File

@@ -398,6 +398,11 @@ SYM_CODE_START(startup_64)
call sev_enable
#endif
/* Preserve only the CR4 bits that must be preserved, and clear the rest */
movq %cr4, %rax
andl $(X86_CR4_PAE | X86_CR4_MCE | X86_CR4_LA57), %eax
movq %rax, %cr4
/*
* configure_5level_paging() updates the number of paging levels using
* a trampoline in 32-bit addressable memory if the current number does

1
arch/x86/crypto/nh-avx2-x86_64.S
View File

@@ -154,5 +154,6 @@ SYM_TYPED_FUNC_START(nh_avx2)
vpaddq T1, T0, T0
vpaddq T4, T0, T0
vmovdqu T0, (HASH)
vzeroupper
RET
SYM_FUNC_END(nh_avx2)

1
arch/x86/crypto/sha256-avx2-asm.S
View File

@@ -716,6 +716,7 @@ SYM_TYPED_FUNC_START(sha256_transform_rorx)
popq %r13
popq %r12
popq %rbx
vzeroupper
RET
SYM_FUNC_END(sha256_transform_rorx)

1
arch/x86/crypto/sha512-avx2-asm.S
View File

@@ -680,6 +680,7 @@ SYM_TYPED_FUNC_START(sha512_transform_rorx)
pop %r12
pop %rbx
vzeroupper
RET
SYM_FUNC_END(sha512_transform_rorx)

27
arch/x86/entry/vdso/Makefile
View File

@@ -190,31 +190,4 @@ GCOV_PROFILE := n
quiet_cmd_vdso_and_check = VDSO $@
cmd_vdso_and_check = $(cmd_vdso); $(cmd_vdso_check)
#
# Install the unstripped copies of vdso*.so. If our toolchain supports
# build-id, install .build-id links as well.
#
quiet_cmd_vdso_install = INSTALL $(@:install_%=%)
define cmd_vdso_install
cp $< "$(MODLIB)/vdso/$(@:install_%=%)"; \
if readelf -n $< |grep -q 'Build ID'; then \
buildid=`readelf -n $< |grep 'Build ID' |sed -e 's/^.*Build ID: \(.*\)$$/\1/'`; \
first=`echo $$buildid | cut -b-2`; \
last=`echo $$buildid | cut -b3-`; \
mkdir -p "$(MODLIB)/vdso/.build-id/$$first"; \
ln -sf "../../$(@:install_%=%)" "$(MODLIB)/vdso/.build-id/$$first/$$last.debug"; \
fi
endef
vdso_img_insttargets := $(vdso_img_sodbg:%.dbg=install_%)
$(MODLIB)/vdso: FORCE
@mkdir -p $(MODLIB)/vdso
$(vdso_img_insttargets): install_%: $(obj)/%.dbg $(MODLIB)/vdso
$(call cmd,vdso_install)
PHONY += vdso_install $(vdso_img_insttargets)
vdso_install: $(vdso_img_insttargets)
clean-files := vdso32.so vdso32.so.dbg vdso64* vdso-image-*.c vdsox32.so*

28
arch/x86/entry/vsyscall/vsyscall_64.c
View File

@@ -98,11 +98,6 @@ static int addr_to_vsyscall_nr(unsigned long addr)
static bool write_ok_or_segv(unsigned long ptr, size_t size)
{
/*
* XXX: if access_ok, get_user, and put_user handled
* sig_on_uaccess_err, this could go away.
*/
if (!access_ok((void __user *)ptr, size)) {
struct thread_struct *thread = &current->thread;
@@ -120,10 +115,8 @@ static bool write_ok_or_segv(unsigned long ptr, size_t size)
bool emulate_vsyscall(unsigned long error_code,
struct pt_regs *regs, unsigned long address)
{
struct task_struct *tsk;
unsigned long caller;
int vsyscall_nr, syscall_nr, tmp;
int prev_sig_on_uaccess_err;
long ret;
unsigned long orig_dx;
@@ -172,8 +165,6 @@ bool emulate_vsyscall(unsigned long error_code,
goto sigsegv;
}
tsk = current;
/*
* Check for access_ok violations and find the syscall nr.
*
@@ -234,12 +225,8 @@ bool emulate_vsyscall(unsigned long error_code,
goto do_ret; /* skip requested */
/*
* With a real vsyscall, page faults cause SIGSEGV. We want to
* preserve that behavior to make writing exploits harder.
* With a real vsyscall, page faults cause SIGSEGV.
*/
prev_sig_on_uaccess_err = current->thread.sig_on_uaccess_err;
current->thread.sig_on_uaccess_err = 1;
ret = -EFAULT;
switch (vsyscall_nr) {
case 0:
@@ -262,23 +249,12 @@ bool emulate_vsyscall(unsigned long error_code,
break;
}
current->thread.sig_on_uaccess_err = prev_sig_on_uaccess_err;
check_fault:
if (ret == -EFAULT) {
/* Bad news -- userspace fed a bad pointer to a vsyscall. */
warn_bad_vsyscall(KERN_INFO, regs,
"vsyscall fault (exploit attempt?)");
/*
* If we failed to generate a signal for any reason,
* generate one here. (This should be impossible.)
*/
if (WARN_ON_ONCE(!sigismember(&tsk->pending.signal, SIGBUS) &&
!sigismember(&tsk->pending.signal, SIGSEGV)))
goto sigsegv;
return true; /* Don't emulate the ret. */
goto sigsegv;
}
regs->ax = ret;

2
arch/x86/include/asm/cmpxchg_64.h
View File

@@ -62,7 +62,7 @@ static __always_inline u128 arch_cmpxchg128_local(volatile u128 *ptr, u128 old,
asm volatile(_lock "cmpxchg16b %[ptr]" \
CC_SET(e) \
: CC_OUT(e) (ret), \
[ptr] "+m" (*ptr), \
[ptr] "+m" (*(_ptr)), \
"+a" (o.low), "+d" (o.high) \
: "b" (n.low), "c" (n.high) \
: "memory"); \

2
arch/x86/include/asm/pgtable_types.h
View File

@@ -567,6 +567,8 @@ static inline void update_page_count(int level, unsigned long pages) { }
extern pte_t *lookup_address(unsigned long address, unsigned int *level);
extern pte_t *lookup_address_in_pgd(pgd_t *pgd, unsigned long address,
unsigned int *level);
pte_t *lookup_address_in_pgd_attr(pgd_t *pgd, unsigned long address,
unsigned int *level, bool *nx, bool *rw);
extern pmd_t *lookup_pmd_address(unsigned long address);
extern phys_addr_t slow_virt_to_phys(void *__address);
extern int __init kernel_map_pages_in_pgd(pgd_t *pgd, u64 pfn,

1
arch/x86/include/asm/processor.h
View File

@@ -464,7 +464,6 @@ struct thread_struct {
unsigned long iopl_emul;
unsigned int iopl_warn:1;
unsigned int sig_on_uaccess_err:1;
/*
* Protection Keys Register for Userspace. Loaded immediately on

2
arch/x86/include/asm/sparsemem.h
View File

@@ -37,8 +37,6 @@ extern int phys_to_target_node(phys_addr_t start);
#define phys_to_target_node phys_to_target_node
extern int memory_add_physaddr_to_nid(u64 start);
#define memory_add_physaddr_to_nid memory_add_physaddr_to_nid
extern int numa_fill_memblks(u64 start, u64 end);
#define numa_fill_memblks numa_fill_memblks
#endif
#endif /* __ASSEMBLY__ */

9
arch/x86/kernel/apic/vector.c
View File

@@ -1036,7 +1036,8 @@ static void __vector_schedule_cleanup(struct apic_chip_data *apicd)
add_timer_on(&cl->timer, cpu);
}
} else {
apicd->prev_vector = 0;
pr_warn("IRQ %u schedule cleanup for offline CPU %u\n", apicd->irq, cpu);
free_moved_vector(apicd);
}
raw_spin_unlock(&vector_lock);
}
@@ -1073,6 +1074,7 @@ void irq_complete_move(struct irq_cfg *cfg)
*/
void irq_force_complete_move(struct irq_desc *desc)
{
unsigned int cpu = smp_processor_id();
struct apic_chip_data *apicd;
struct irq_data *irqd;
unsigned int vector;
@@ -1097,10 +1099,11 @@ void irq_force_complete_move(struct irq_desc *desc)
goto unlock;
/*
* If prev_vector is empty, no action required.
* If prev_vector is empty or the descriptor is neither currently
* nor previously on the outgoing CPU no action required.
*/
vector = apicd->prev_vector;
if (!vector)
if (!vector || (apicd->cpu != cpu && apicd->prev_cpu != cpu))
goto unlock;
/*

6
arch/x86/kernel/tsc_sync.c
View File

@@ -193,11 +193,9 @@ bool tsc_store_and_check_tsc_adjust(bool bootcpu)
cur->warned = false;
/*
* If a non-zero TSC value for socket 0 may be valid then the default
* adjusted value cannot assumed to be zero either.
* The default adjust value cannot be assumed to be zero on any socket.
*/
if (tsc_async_resets)
cur->adjusted = bootval;
cur->adjusted = bootval;
/*
* Check whether this CPU is the first in a package to come up. In

21
arch/x86/kvm/cpuid.c
View File

@@ -1212,9 +1212,8 @@ static inline int __do_cpuid_func(struct kvm_cpuid_array *array, u32 function)
entry->eax = entry->ebx = entry->ecx = 0;
break;
case 0x80000008: {
unsigned g_phys_as = (entry->eax >> 16) & 0xff;
unsigned virt_as = max((entry->eax >> 8) & 0xff, 48U);
unsigned phys_as = entry->eax & 0xff;
unsigned int virt_as = max((entry->eax >> 8) & 0xff, 48U);
unsigned int phys_as;
/*
* If TDP (NPT) is disabled use the adjusted host MAXPHYADDR as
@@ -1222,16 +1221,16 @@ static inline int __do_cpuid_func(struct kvm_cpuid_array *array, u32 function)
* reductions in MAXPHYADDR for memory encryption affect shadow
* paging, too.
*
* If TDP is enabled but an explicit guest MAXPHYADDR is not
* provided, use the raw bare metal MAXPHYADDR as reductions to
* the HPAs do not affect GPAs.
* If TDP is enabled, use the raw bare metal MAXPHYADDR as
* reductions to the HPAs do not affect GPAs.
*/
if (!tdp_enabled)
g_phys_as = boot_cpu_data.x86_phys_bits;
else if (!g_phys_as)
g_phys_as = phys_as;
if (!tdp_enabled) {
phys_as = boot_cpu_data.x86_phys_bits;
} else {
phys_as = entry->eax & 0xff;
}
entry->eax = g_phys_as | (virt_as << 8);
entry->eax = phys_as | (virt_as << 8);
entry->ecx &= ~(GENMASK(31, 16) | GENMASK(11, 8));
entry->edx = 0;
cpuid_entry_override(entry, CPUID_8000_0008_EBX);

10
arch/x86/lib/x86-opcode-map.txt
View File

@@ -148,7 +148,7 @@ AVXcode:
65: SEG=GS (Prefix)
66: Operand-Size (Prefix)
67: Address-Size (Prefix)
68: PUSH Iz (d64)
68: PUSH Iz
69: IMUL Gv,Ev,Iz
6a: PUSH Ib (d64)
6b: IMUL Gv,Ev,Ib
@@ -698,10 +698,10 @@ AVXcode: 2
4d: vrcp14ss/d Vsd,Hpd,Wsd (66),(ev)
4e: vrsqrt14ps/d Vpd,Wpd (66),(ev)
4f: vrsqrt14ss/d Vsd,Hsd,Wsd (66),(ev)
50: vpdpbusd Vx,Hx,Wx (66),(ev)
51: vpdpbusds Vx,Hx,Wx (66),(ev)
52: vdpbf16ps Vx,Hx,Wx (F3),(ev) | vpdpwssd Vx,Hx,Wx (66),(ev) | vp4dpwssd Vdqq,Hdqq,Wdq (F2),(ev)
53: vpdpwssds Vx,Hx,Wx (66),(ev) | vp4dpwssds Vdqq,Hdqq,Wdq (F2),(ev)
50: vpdpbusd Vx,Hx,Wx (66)
51: vpdpbusds Vx,Hx,Wx (66)
52: vdpbf16ps Vx,Hx,Wx (F3),(ev) | vpdpwssd Vx,Hx,Wx (66) | vp4dpwssd Vdqq,Hdqq,Wdq (F2),(ev)
53: vpdpwssds Vx,Hx,Wx (66) | vp4dpwssds Vdqq,Hdqq,Wdq (F2),(ev)
54: vpopcntb/w Vx,Wx (66),(ev)
55: vpopcntd/q Vx,Wx (66),(ev)
58: vpbroadcastd Vx,Wx (66),(v)

33
arch/x86/mm/fault.c
View File

@@ -717,39 +717,8 @@ kernelmode_fixup_or_oops(struct pt_regs *regs, unsigned long error_code,
WARN_ON_ONCE(user_mode(regs));
/* Are we prepared to handle this kernel fault? */
if (fixup_exception(regs, X86_TRAP_PF, error_code, address)) {
/*
* Any interrupt that takes a fault gets the fixup. This makes
* the below recursive fault logic only apply to a faults from
* task context.
*/
if (in_interrupt())
return;
/*
* Per the above we're !in_interrupt(), aka. task context.
*
* In this case we need to make sure we're not recursively
* faulting through the emulate_vsyscall() logic.
*/
if (current->thread.sig_on_uaccess_err && signal) {
sanitize_error_code(address, &error_code);
set_signal_archinfo(address, error_code);
if (si_code == SEGV_PKUERR) {
force_sig_pkuerr((void __user *)address, pkey);
} else {
/* XXX: hwpoison faults will set the wrong code. */
force_sig_fault(signal, si_code, (void __user *)address);
}
}
/*
* Barring that, we can do the fixup and be happy.
*/
if (fixup_exception(regs, X86_TRAP_PF, error_code, address))
return;
}
/*
* AMD erratum #91 manifests as a spurious page fault on a PREFETCH

4
arch/x86/mm/numa.c
View File

@@ -956,6 +956,8 @@ int memory_add_physaddr_to_nid(u64 start)
}
EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
#endif
static int __init cmp_memblk(const void *a, const void *b)
{
const struct numa_memblk *ma = *(const struct numa_memblk **)a;
@@ -1028,5 +1030,3 @@ int __init numa_fill_memblks(u64 start, u64 end)
}
return 0;
}
#endif

68
arch/x86/mm/pat/set_memory.c
View File

@@ -619,7 +619,8 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long start,
* Validate strict W^X semantics.
*/
static inline pgprot_t verify_rwx(pgprot_t old, pgprot_t new, unsigned long start,
unsigned long pfn, unsigned long npg)
unsigned long pfn, unsigned long npg,
bool nx, bool rw)
{
unsigned long end;
@@ -641,6 +642,10 @@ static inline pgprot_t verify_rwx(pgprot_t old, pgprot_t new, unsigned long star
if ((pgprot_val(new) & (_PAGE_RW | _PAGE_NX)) != _PAGE_RW)
return new;
/* Non-leaf translation entries can disable writing or execution. */
if (!rw || nx)
return new;
end = start + npg * PAGE_SIZE - 1;
WARN_ONCE(1, "CPA detected W^X violation: %016llx -> %016llx range: 0x%016lx - 0x%016lx PFN %lx\n",
(unsigned long long)pgprot_val(old),
@@ -657,20 +662,26 @@ static inline pgprot_t verify_rwx(pgprot_t old, pgprot_t new, unsigned long star
/*
* Lookup the page table entry for a virtual address in a specific pgd.
* Return a pointer to the entry and the level of the mapping.
* Return a pointer to the entry, the level of the mapping, and the effective
* NX and RW bits of all page table levels.
*/
pte_t *lookup_address_in_pgd(pgd_t *pgd, unsigned long address,
unsigned int *level)
pte_t *lookup_address_in_pgd_attr(pgd_t *pgd, unsigned long address,
unsigned int *level, bool *nx, bool *rw)
{
p4d_t *p4d;
pud_t *pud;
pmd_t *pmd;
*level = PG_LEVEL_NONE;
*nx = false;
*rw = true;
if (pgd_none(*pgd))
return NULL;
*nx |= pgd_flags(*pgd) & _PAGE_NX;
*rw &= pgd_flags(*pgd) & _PAGE_RW;
p4d = p4d_offset(pgd, address);
if (p4d_none(*p4d))
return NULL;
@@ -679,6 +690,9 @@ pte_t *lookup_address_in_pgd(pgd_t *pgd, unsigned long address,
if (p4d_large(*p4d) || !p4d_present(*p4d))
return (pte_t *)p4d;
*nx |= p4d_flags(*p4d) & _PAGE_NX;
*rw &= p4d_flags(*p4d) & _PAGE_RW;
pud = pud_offset(p4d, address);
if (pud_none(*pud))
return NULL;
@@ -687,6 +701,9 @@ pte_t *lookup_address_in_pgd(pgd_t *pgd, unsigned long address,
if (pud_leaf(*pud) || !pud_present(*pud))
return (pte_t *)pud;
*nx |= pud_flags(*pud) & _PAGE_NX;
*rw &= pud_flags(*pud) & _PAGE_RW;
pmd = pmd_offset(pud, address);
if (pmd_none(*pmd))
return NULL;
@@ -695,11 +712,26 @@ pte_t *lookup_address_in_pgd(pgd_t *pgd, unsigned long address,
if (pmd_large(*pmd) || !pmd_present(*pmd))
return (pte_t *)pmd;
*nx |= pmd_flags(*pmd) & _PAGE_NX;
*rw &= pmd_flags(*pmd) & _PAGE_RW;
*level = PG_LEVEL_4K;
return pte_offset_kernel(pmd, address);
}
/*
* Lookup the page table entry for a virtual address in a specific pgd.
* Return a pointer to the entry and the level of the mapping.
*/
pte_t *lookup_address_in_pgd(pgd_t *pgd, unsigned long address,
unsigned int *level)
{
bool nx, rw;
return lookup_address_in_pgd_attr(pgd, address, level, &nx, &rw);
}
/*
* Lookup the page table entry for a virtual address. Return a pointer
* to the entry and the level of the mapping.
@@ -715,13 +747,16 @@ pte_t *lookup_address(unsigned long address, unsigned int *level)
EXPORT_SYMBOL_GPL(lookup_address);
static pte_t *_lookup_address_cpa(struct cpa_data *cpa, unsigned long address,
unsigned int *level)
unsigned int *level, bool *nx, bool *rw)
{
if (cpa->pgd)
return lookup_address_in_pgd(cpa->pgd + pgd_index(address),
address, level);
pgd_t *pgd;
return lookup_address(address, level);
if (!cpa->pgd)
pgd = pgd_offset_k(address);
else
pgd = cpa->pgd + pgd_index(address);
return lookup_address_in_pgd_attr(pgd, address, level, nx, rw);
}
/*
@@ -845,12 +880,13 @@ static int __should_split_large_page(pte_t *kpte, unsigned long address,
pgprot_t old_prot, new_prot, req_prot, chk_prot;
pte_t new_pte, *tmp;
enum pg_level level;
bool nx, rw;
/*
* Check for races, another CPU might have split this page
* up already:
*/
tmp = _lookup_address_cpa(cpa, address, &level);
tmp = _lookup_address_cpa(cpa, address, &level, &nx, &rw);
if (tmp != kpte)
return 1;
@@ -961,7 +997,8 @@ static int __should_split_large_page(pte_t *kpte, unsigned long address,
new_prot = static_protections(req_prot, lpaddr, old_pfn, numpages,
psize, CPA_DETECT);
new_prot = verify_rwx(old_prot, new_prot, lpaddr, old_pfn, numpages);
new_prot = verify_rwx(old_prot, new_prot, lpaddr, old_pfn, numpages,
nx, rw);
/*
* If there is a conflict, split the large page.
@@ -1042,6 +1079,7 @@ __split_large_page(struct cpa_data *cpa, pte_t *kpte, unsigned long address,
pte_t *pbase = (pte_t *)page_address(base);
unsigned int i, level;
pgprot_t ref_prot;
bool nx, rw;
pte_t *tmp;
spin_lock(&pgd_lock);
@@ -1049,7 +1087,7 @@ __split_large_page(struct cpa_data *cpa, pte_t *kpte, unsigned long address,
* Check for races, another CPU might have split this page
* up for us already:
*/
tmp = _lookup_address_cpa(cpa, address, &level);
tmp = _lookup_address_cpa(cpa, address, &level, &nx, &rw);
if (tmp != kpte) {
spin_unlock(&pgd_lock);
return 1;
@@ -1590,10 +1628,11 @@ static int __change_page_attr(struct cpa_data *cpa, int primary)
int do_split, err;
unsigned int level;
pte_t *kpte, old_pte;
bool nx, rw;
address = __cpa_addr(cpa, cpa->curpage);
repeat:
kpte = _lookup_address_cpa(cpa, address, &level);
kpte = _lookup_address_cpa(cpa, address, &level, &nx, &rw);
if (!kpte)
return __cpa_process_fault(cpa, address, primary);
@@ -1615,7 +1654,8 @@ repeat:
new_prot = static_protections(new_prot, address, pfn, 1, 0,
CPA_PROTECT);
new_prot = verify_rwx(old_prot, new_prot, address, pfn, 1);
new_prot = verify_rwx(old_prot, new_prot, address, pfn, 1,
nx, rw);
new_prot = pgprot_clear_protnone_bits(new_prot);

57
arch/x86/net/bpf_jit_comp.c
View File

@@ -1458,36 +1458,41 @@ st: if (is_imm8(insn->off))
if (BPF_MODE(insn->code) == BPF_PROBE_MEM ||
BPF_MODE(insn->code) == BPF_PROBE_MEMSX) {
/* Conservatively check that src_reg + insn->off is a kernel address:
* src_reg + insn->off >= TASK_SIZE_MAX + PAGE_SIZE
* src_reg is used as scratch for src_reg += insn->off and restored
* after emit_ldx if necessary
* src_reg + insn->off > TASK_SIZE_MAX + PAGE_SIZE
* and
* src_reg + insn->off < VSYSCALL_ADDR
*/
u64 limit = TASK_SIZE_MAX + PAGE_SIZE;
u64 limit = TASK_SIZE_MAX + PAGE_SIZE - VSYSCALL_ADDR;
u8 *end_of_jmp;
/* At end of these emitted checks, insn->off will have been added
* to src_reg, so no need to do relative load with insn->off offset
*/
insn_off = 0;
/* movabsq r10, VSYSCALL_ADDR */
emit_mov_imm64(&prog, BPF_REG_AX, (long)VSYSCALL_ADDR >> 32,
(u32)(long)VSYSCALL_ADDR);
/* movabsq r11, limit */
EMIT2(add_1mod(0x48, AUX_REG), add_1reg(0xB8, AUX_REG));
EMIT((u32)limit, 4);
EMIT(limit >> 32, 4);
/* mov src_reg, r11 */
EMIT_mov(AUX_REG, src_reg);
if (insn->off) {
/* add src_reg, insn->off */
maybe_emit_1mod(&prog, src_reg, true);
EMIT2_off32(0x81, add_1reg(0xC0, src_reg), insn->off);
/* add r11, insn->off */
maybe_emit_1mod(&prog, AUX_REG, true);
EMIT2_off32(0x81, add_1reg(0xC0, AUX_REG), insn->off);
}
/* cmp src_reg, r11 */
maybe_emit_mod(&prog, src_reg, AUX_REG, true);
EMIT2(0x39, add_2reg(0xC0, src_reg, AUX_REG));
/* sub r11, r10 */
maybe_emit_mod(&prog, AUX_REG, BPF_REG_AX, true);
EMIT2(0x29, add_2reg(0xC0, AUX_REG, BPF_REG_AX));
/* if unsigned '>=', goto load */
EMIT2(X86_JAE, 0);
/* movabsq r10, limit */
emit_mov_imm64(&prog, BPF_REG_AX, (long)limit >> 32,
(u32)(long)limit);
/* cmp r10, r11 */
maybe_emit_mod(&prog, AUX_REG, BPF_REG_AX, true);
EMIT2(0x39, add_2reg(0xC0, AUX_REG, BPF_REG_AX));
/* if unsigned '>', goto load */
EMIT2(X86_JA, 0);
end_of_jmp = prog;
/* xor dst_reg, dst_reg */
@@ -1513,18 +1518,6 @@ st: if (is_imm8(insn->off))
/* populate jmp_offset for JMP above */
start_of_ldx[-1] = prog - start_of_ldx;
if (insn->off && src_reg != dst_reg) {
/* sub src_reg, insn->off
* Restore src_reg after "add src_reg, insn->off" in prev
* if statement. But if src_reg == dst_reg, emit_ldx
* above already clobbered src_reg, so no need to restore.
* If add src_reg, insn->off was unnecessary, no need to
* restore either.
*/
maybe_emit_1mod(&prog, src_reg, true);
EMIT2_off32(0x81, add_1reg(0xE8, src_reg), insn->off);
}
if (!bpf_prog->aux->extable)
break;

40
arch/x86/pci/mmconfig-shared.c
View File

@@ -527,7 +527,34 @@ pci_mmcfg_check_reserved(struct device *dev, struct pci_mmcfg_region *cfg, int e
{
struct resource *conflict;
if (!early && !acpi_disabled) {
if (early) {
/*
* Don't try to do this check unless configuration type 1
* is available. How about type 2?
*/
/*
* 946f2ee5c731 ("Check that MCFG points to an e820
* reserved area") added this E820 check in 2006 to work
* around BIOS defects.
*
* Per PCI Firmware r3.3, sec 4.1.2, ECAM space must be
* reserved by a PNP0C02 resource, but it need not be
* mentioned in E820. Before the ACPI interpreter is
* available, we can't check for PNP0C02 resources, so
* there's no reliable way to verify the region in this
* early check. Keep it only for the old machines that
* motivated 946f2ee5c731.
*/
if (dmi_get_bios_year() < 2016 && raw_pci_ops)
return is_mmconf_reserved(e820__mapped_all, cfg, dev,
"E820 entry");
return true;
}
if (!acpi_disabled) {
if (is_mmconf_reserved(is_acpi_reserved, cfg, dev,
"ACPI motherboard resource"))
return true;
@@ -563,16 +590,7 @@ pci_mmcfg_check_reserved(struct device *dev, struct pci_mmcfg_region *cfg, int e
* For MCFG information constructed from hotpluggable host bridge's
* _CBA method, just assume it's reserved.
*/
if (pci_mmcfg_running_state)
return true;
/* Don't try to do this check unless configuration
type 1 is available. how about type 2 ?*/
if (raw_pci_ops)
return is_mmconf_reserved(e820__mapped_all, cfg, dev,
"E820 entry");
return false;
return pci_mmcfg_running_state;
}
static void __init pci_mmcfg_reject_broken(int early)

3
arch/x86/purgatory/Makefile
View File

@@ -42,7 +42,8 @@ KCOV_INSTRUMENT := n
# make up the standalone purgatory.ro
PURGATORY_CFLAGS_REMOVE := -mcmodel=kernel
PURGATORY_CFLAGS := -mcmodel=large -ffreestanding -fno-zero-initialized-in-bss -g0
PURGATORY_CFLAGS := -mcmodel=small -ffreestanding -fno-zero-initialized-in-bss -g0
PURGATORY_CFLAGS += -fpic -fvisibility=hidden
PURGATORY_CFLAGS += $(DISABLE_STACKLEAK_PLUGIN) -DDISABLE_BRANCH_PROFILING
PURGATORY_CFLAGS += -fno-stack-protector

9
arch/x86/tools/relocs.c
View File

@@ -746,6 +746,15 @@ static void walk_relocs(int (*process)(struct section *sec, Elf_Rel *rel,
if (!(sec_applies->shdr.sh_flags & SHF_ALLOC)) {
continue;
}
/*
* Do not perform relocations in .notes sections; any
* values there are meant for pre-boot consumption (e.g.
* startup_xen).
*/
if (sec_applies->shdr.sh_type == SHT_NOTE)
continue;
sh_symtab = sec_symtab->symtab;
sym_strtab = sec_symtab->link->strtab;
for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Rel); j++) {

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