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git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap into soc/dt
ARM: dts: OMAP updates for v6.20
* tag 'omap-for-v6.20/dt-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap:
ARM: dts: omap: dra7: Remove bogus #syscon-cells property
ARM: dts: ti/omap: omap*: fix watchdog node names
ARM: dts: ti: Drop unused .dtsi
ARM: dts: Drop am335x-base0033 devicetree
ARM: dts: tps65910: Add gpio & interrupt properties
ARM: dts: omap: enable panic-indicator option
ARM: dts: ti/omap: omap4-epson-embt2ws: add powerbutton
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into soc/dt
Allwinner device tree changes for 6.20
Not many changes this cycle.
- The A523 family of SoCs gained support for SPI controllers.
- Some cleanup of old ARM device tree files to fix DT binding validation
errors.
- D1 and A100 SoCs gained support for their LED controller. This was
from a couple years ago. The driver made it in, but the DT patches
were missed.
- D1 and T113 SoCs gained support for the internal thermal sensor.
* tag 'sunxi-dt-for-6.20' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
riscv: dts: allwinner: d1: Add CPU thermal sensor and zone
ARM: dts: allwinner: Replace status "failed" with "fail"
riscv: dts: allwinner: d1: Add RGB LEDs to boards
riscv: dts: allwinner: d1: Add LED controller node
arm64: dts: allwinner: a100: Add LED controller node
ARM: dts: allwinner: sun5i-a13-utoo-p66: delete "power-gpios" property
arm64: dts: allwinner: t527: orangepi-4a: Enable SPI-NOR flash
arm64: dts: allwinner: sun55i: Add SPI controllers
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux into soc/dt
Amlogic ARM DT for v6.20:
- drop iio-hwmon in favour of generic-adc-thermal
* tag 'amlogic-arm-dt-for-v6.20' of https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux:
ARM: dts: meson: drop iio-hwmon in favour of generic-adc-thermal
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux into soc/dt
Amlogic ARM64 DT for v6.20:
- Cleanups:
- Use lowercase hex
- Use hyphen in node names
- move CPU OPP table and clock assignment to SoC.dtsi
- drop useless assigned-clock-parents
- MMC clock fixup across multiple families
- Add type-c controller on Radxa Zero 2 and enable NPU
- New board:
- Khadas VIM1s based on Amlogic S4
* tag 'amlogic-arm64-dt-for-v6.20' of https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux:
arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: enable SDIO interface
arm64: dts: amlogic: add the type-c controller on Radxa Zero 2
arm64: dts: amlogic: meson-sm1-odroid: Eliminate Odroid HC4 power glitches during boot.
arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: enable eMMC storage
arm64: dts: meson-s4-s905y4-khadas-vim1s: add initial device tree
arm64: dts: meson-s4-aq222: update compatible string with s805x2
dt-bindings: arm: amlogic: introduce specific compatibles for S4 family
arm64: dts: amlogic: Enable the npu node on Radxa Zero 2
arm64: dts: amlogic: g12: assign the MMC A signal clock
arm64: dts: amlogic: g12: assign the MMC B and C signal clocks
arm64: dts: amlogic: gx: assign the MMC signal clocks
arm64: dts: amlogic: axg: assign the MMC signal clocks
arm64: dts: amlogic: a1: align the mmc clock setup
arm64: dts: amlogic: c3: assign the MMC signal clocks
arm64: dts: amlogic: s4: fix mmc clock assignment
arm64: dts: amlogic: s4: assign mmc b clock to 24MHz
arm64: dts: amlogic: drop useless assigned-clock-parents
arm64: dts: amlogic: move CPU OPP table and clock assignment to SoC.dtsi
arm64: dts: amlogic: Use lowercase hex
arm64: dts: amlogic: Use hyphen in node names
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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into soc/dt
RISC-V SpacemiT DT changes for 6.20
- Disable Ethernet PHY auto sleep mode
- Add pinctrl IO power support
- Add K3 Pico-ITX board
- Add support for K3 SoC
- Add DWC USB support
- Add reset for eMMC(sdhci)/I2C
- Add PCIe support
- Support PMIC for Jupiter board
* tag 'spacemit-dt-for-6.20-1' of https://github.com/spacemit-com/linux:
riscv: dts: spacemit: Disable ETH PHY sleep mode for OrangePi
riscv: dts: spacemit: pinctrl: update register and IO power
riscv: dts: spacemit: add K3 Pico-ITX board support
riscv: dts: spacemit: add initial support for K3 SoC
dt-bindings: riscv: spacemit: add K3 and Pico-ITX board bindings
dt-bindings: interrupt-controller: add SpacemiT K3 IMSIC
dt-bindings: interrupt-controller: add SpacemiT K3 APLIC
dt-bindings: timer: add SpacemiT K3 CLINT
dt-bindings: riscv: add SpacemiT X100 CPU compatible
riscv: dts: spacemit: k1: Add "b" ISA extension
riscv: dts: spacemit: Enable USB3.0 on BananaPi-F3
riscv: dts: spacemit: Add DWC3 USB 3.0 controller node for K1
riscv: dts: spacemit: Add USB2 PHY node for K1
riscv: dts: spacemit: sdhci: add reset support
riscv: dts: spacemit: add reset property
riscv: dts: spacemit: PCIe and PHY-related updates
riscv: dts: spacemit: Add a PCIe regulator
riscv: dts: spacemit: Define the P1 PMIC regulators for Milk-V Jupiter
riscv: dts: spacemit: Define fixed regulators for Milk-V Jupiter
riscv: dts: spacemit: Enable i2c8 adapter for Milk-V Jupiter
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into soc/dt
Samsung DTS ARM64 changes for v6.20, part two
Add DPU clock management unit nodes to Google GS101.
* tag 'samsung-dt64-6.20-2' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
arm64: dts: exynos: gs101: add cmu_dpu and sysreg_dpu dt nodes
dt-bindings: clock: google,gs101-clock: Add DPU clock management unit
dt-bindings: clock: google,gs101-clock: fix alphanumeric ordering
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://github.com/Broadcom/stblinux into soc/dt
This pull request contains Broadcom ARM64-based SoCs DT changes for
6.20, please pull the following:
- Peter enables the RNG on 2712 (Raspberry Pi 5)
- Stanimir adds the watchdog DT node on 2712
- Rob removes undocumneted nodes, reworks clock nodes, fixes the
"simple-bus" node names, and cleans up additional properties and nodes
for all Broadcom ARM64-based SoCs
* tag 'arm-soc/for-6.20/devicetree-arm64' of https://github.com/Broadcom/stblinux:
arm64: dts: broadcom: bcm4906-netgear-r8000p: Drop unnecessary "ranges" in partition node
arm64: dts: broadcom: northstar2: Drop "arm,cci-400-pmu" fallback compatible
arm64: dts: broadcom: northstar2: Drop QSPI "clock-names"
arm64: dts: broadcom: northstar2: Drop unused and undocumented "brcm,pcie-ob-oarr-size" properties
arm64: dts: broadcom: northstar2: Rework clock nodes
arm64: dts: broadcom: ns2-svk: Use non-deprecated at25 properties
arm64: dts: broadcom: Use preferred node names
arm64: dts: broadcom: stingray: Move raid nodes out of bus
arm64: dts: broadcom: stingray: Fix 'simple-bus' node names
arm64: dts: broadcom: stingray: Rework clock nodes
arm64: dts: broadcom: Remove unused and undocumented nodes
arm64: dts: broadcom: bcm2712: Add watchdog DT node
arm64: dts: broadcom: bcm2712: Enable RNG
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://github.com/Broadcom/stblinux into soc/dt
This pull request contains Broadcom ARM-based SoCs DT changes for 6.20,
please pull the following:
- Rob fixes the simple-bus node names in the BCM2711 .dtsi file
* tag 'arm-soc/for-6.20/devicetree' of https://github.com/Broadcom/stblinux:
ARM: dts: broadcom: bcm2711: Fix 'simple-bus' node names
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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If a process wrote to POR_EL0 and then crashed before a context switch
happened, the coredump would contain an incorrect value for POR_EL0.
The value read in poe_get() would be a stale value left in thread.por_el0. Fix
this by reading the value from the system register, if the target thread is the
current thread.
This matches what gcs/fpsimd do.
Fixes: 175198199262 ("arm64/ptrace: add support for FEAT_POE")
Reported-by: David Spickett <david.spickett@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
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into soc/dt
RISC-V/Sophgo Devicetrees for v6.20
Sophgo:
For CV18xx serials:
Update RX/TX FIFO size to fix the USB transfer issue.
For SG2042:
Optimize the DTS file format, including moving PLIC/CLINT
nodes into cpu dtsi and sorting peripheral nodes by address.
In addition, we also enable RTC for Pioneerbox.
For SG2044:
Add "b" ISA extension to fix dtbs_check warnings.
Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
* tag 'riscv-sophgo-dt-for-v6.20' of https://github.com/sophgo/linux:
riscv: dts: sophgo: sg2044: Add "b" ISA extension
riscv: dts: sophgo: fix the node order of SG2042 peripheral
riscv: dts: sophgo: Move PLIC and CLINT node into CPU dtsi
riscv: dts: sophgo: enable hardware clock (RTC) on the Milk-V Pioneer
riscv: dts: sophgo: cv180x: fix USB dwc2 FIFO sizes
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32 into soc/dt
STM32 DT for v6.20, round 1
Highlights:
----------
- MCU:
- Update/add Led support on ST boards.
- MPU:
- STM32MP13:
- Add boot led and red led on ST DK board.
- STMP32MP15:
- Add boot led and red led on ST DK boards.
- Add SPI1 sleep pinctrl group.
- STM32MP23:
- Add green ,orange and boot leds on ST boards.
- Add SPI, I2C, DCMIPP and CSI instances to CLUSTER_PD
power domain.
- Enable analog-filter to all I2C instances.
- STM32MP25:
- Add green ,orange and boot leds on ST boards.
- Add SPI, I2C, DCMIPP and CSI instances to CLUSTER_PD
power domain.
- Enable analog-filter to all I2C instances.
- Add LPDDR/DDR channels to ST boards.
* tag 'stm32-dt-for-v6.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32: (31 commits)
arm/arm64: dts: st: Drop unused .dtsi
arm64: STM32: drop an undefined Kconfig symbol
arm64: dts: st: Minor whitespace cleanup
arm64: dts: st: Use hyphen in node names
arm64: dts: st: add power-domain of dcmipp in stm32mp231.dtsi
arm64: dts: st: add power-domain of dcmipp in stm32mp251.dtsi
dt-bindings: media: st: dcmipp: add 'power-domains' property
arm64: dts: st: add power-domain of csi in stm32mp231.dtsi
arm64: dts: st: add power-domain of csi in stm32mp251.dtsi
dt-bindings: media: st: csi: add 'power-domains' property
ARM: dts: stm32: add spi1 sleep state pinctrl on stm32mp157c-ev1
arm64: dts: st: add DDR channel to stm32mp257f-ev1 board
arm64: dts: st: add LPDDR channel to stm32mp257f-dk board
arm64: dts: st: enable i2c analog-filter in stm32mp231.dtsi
arm64: dts: st: enable i2c analog-filter in stm32mp251.dtsi
arm64: dts: st: add power-domains in all i2c of stm32mp231.dtsi
arm64: dts: st: add power-domains in all i2c of stm32mp251.dtsi
dt-bindings: i2c: st,stm32-i2c: add 'power-domains' property
arm64: dts: st: add power-domains in all spi of stm32mp231.dtsi
arm64: dts: st: add power-domains in all spi of stm32mp251.dtsi
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
- Mark the Meson GPIO controller as sleeping to avoid a
context splat
- Fix up the I2S2 and SWR TX group settings in the
Qualcomm SM8350 LPASS pin controller, and implement the
proper .get_direction() callback
- Fix a pin typo in the TG1520 pin controller
- Fix a group name in the Marvell armada 3710 XB pin
controller that got mangled in a DT schema rewrite
* tag 'pinctrl-v6.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
dt-bindings: pinctrl: marvell,armada3710-xb-pinctrl: fix 'usb32_drvvbus0' group name
pinctrl: lpass-lpi: implement .get_direction() for the GPIO driver
pinctrl: th1520: Fix typo
pinctrl: qcom: sm8350-lpass-lpi: Merge with SC7280 to fix I2S2 and SWR TX pins
pinctrl: meson: mark the GPIO controller as sleeping
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https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into soc/dt
i.MX arm64 device tree changes for 6.20:
- New board support: i.MX8MP/i.MX91/i.MX93/i.MX95 FRDM, ifm VHIP4
EvalBoard, Apalis iMX8QP, TQ-Systems MBLS1028A/MBLS1028A-IND
- A number of series from Alexander Stein improving lpcg indices
description for tqma8xxs board, moving BMAN/QMAN buffers for
tqmls1046a, refreshing tqma8mpql-mba8mpxl support a bit, adding HDMI
audio support for tqma8mpql-mba8mp-ras314 etc.
- A series from Chancel Liu adding various audio features for
imx93-14x14-evk board
- A series from Francesco Dolcini enabling hdmi_pai device for
imx8mp-verdin and imx8mp-toradex-smarc
- A couple of changes from Francesco Valla enabling more devices
and correcting CAN transceiver gpio for imx93-11x11-frdm
- A few changes from Frank Li adding DDR perf support for imx8qm, adding
camera support for imx8mp-evk, enabling thermal support for i.MX91, etc.
- A series from Haibo Chen adding flexcan support for imx943-evk and
imx952-evk boards
- A series from Krzysztof Kozlowski fixing up coding style issues
- A couple of changes from Marek Vasut updating Data Modul i.MX8M Plus
eDM SBC DT to rev.903, using GPU_CGC as core clock for GPU on i.MX95
- A series from Markus Niebel to clean up imx8mm-tqma8mqml board
regulators
- A couple of series from Peng Fan replacing xceiver-supply with phys
for NXP EVK boards, improving imx952-evk board support
- A series from Sebastian Krzyszkowiak to refresh imx8mq-librem5 support
- A couple of series from Stefano Radaelli to improve
imx93-var-som-symphony and imx8mp-var-som support
- Other random changes for various boards
* tag 'imx-dt64-6.20' of https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: (104 commits)
arm64: dts: freescale: imx95: Add support for i.MX95 15x15 FRDM board
arm64: dts: imx91-11x11-frdm: fix CAN transceiver gpio
arm64: dts: imx93-11x11-frdm: enable additional devices
arm64: dts: imx93-11x11-frdm: Add MQS audio support
arm64: dts: imx952-evk: Add nxp,ctrl-ids for scmi misc
arm64: dts: imx952-evk: Add flexcan support
arm64: dts: imx952-evk: Enable TPM[3,6]
arm64: dts: imx952-evk: Enable wdog3
arm64: dts: imx952-evk: Enable USB[1,2]
arm64: dts: imx952-evk: Enable SPI7
arm64: dts: imx952-evk: Enable UART5
arm64: dts: imx952-evk: Enable I2C[2,3,4,6,7] bus
arm64: dts: imx952-evk: Change the usdhc1_200mhz drive strength to DSE4
arm64: dts: imx952: Add idle-states node
arm64: dts: imx8mn: Add ifm VHIP4 EvalBoard v1 and v2
arm64: dts: imx8mn: Add SNVS LPGPR
arm64: dts: imx8mq-librem5: Don't set mic-cfg for wm8962
arm64: dts: imx8mq-librem5: Set cap-power-off-card for usdhc2
arm64: dts: imx8mq-librem5: Limit uSDHC2 frequency to 50MHz
arm64: dts: imx8mq-librem5: Enable SNVS RTC
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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CI testing found this build failure:
arch/x86/hyperv/hv_crash.c:631:9: error: ‘smp_ops’ undeclared (first use in this function)
And I bisected it back to the initial commit that enabled this feature:
77c860d2dbb72d1f3c6a2e882a07d19eca399db5 is the first bad commit
commit 77c860d2dbb72d1f3c6a2e882a07d19eca399db5 (HEAD)
Author: Mukesh Rathor <mrathor@linux.microsoft.com>
Date: Mon Oct 6 15:42:08 2025 -0700
x86/hyperv: Enable build of hypervisor crashdump collection files
Hyperv should probably be limited to SMP kernels, as nobody
appears to be testing it on UP kernels.
Until then, fix the smp_ops assumption. Build tested only.
Fixes: 77c860d2dbb72 ("x86/hyperv: Enable build of hypervisor crashdump collection files")
Cc: Mukesh Rathor <mrathor@linux.microsoft.com>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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The commit
a76108d05ee1 ("x86/entry/vdso: Move vdso2c to arch/x86/tools")
moved vdso2c to arch/x86/tools/ and commit
93d73005bff4 ("x86/entry/vdso: Rename vdso_image_* to vdso*_image")
renamed .so files but also dropped vdso2c from
arch/x86/entry/vdso/.gitignore.
It should've moved it to arch/x86/tools/.gitignore instead.
Do that.
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://patch.msgid.link/20260127221633.GAaXk5QcG8ILa1VWYR@fat_crate.local
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The original order of checks in the ICH_HCR_EL2_TDIR test returned
with false early in the case where the native GICv3 CPUIF was not
present. The result was that on GICv5 hosts with legacy support -
which do not have the GICv3 CPUIF - the test always returned false.
Reshuffle the checks such that support for GICv5 legacy is checked
prior to checking for the native GICv3 CPUIF.
Signed-off-by: Sascha Bischoff <sascha.bischoff@arm.com>
Fixes: 2a28810cbb8b2 ("KVM: arm64: GICv3: Detect and work around the lack of ICV_DIR_EL1 trapping")
Link: https://patch.msgid.link/20251208152724.3637157-4-sascha.bischoff@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
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Factor out the enable (and printing of) the GICv3 CPUIF traps from the
main GICv3 probe into a separate function. Call said function from the
GICv5 probe for legacy support, ensuring that any required GICv3 CPUIF
traps on GICv5 hosts will be correctly handled, rather than injecting
an undef into the guest.
Signed-off-by: Sascha Bischoff <sascha.bischoff@arm.com>
Link: https://patch.msgid.link/20251208152724.3637157-3-sascha.bischoff@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
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Running commands
# ./perf record -IR0,R1 -a sleep 1
extracts and displays register value of general purpose register r1 and r0.
However the value displayed of any register is random and does not
reflect the register value recorded at the time of the sample interrupt.
The sampling device driver on s390 creates a very large buffer
for the hardware to store the samples. Only when that large buffer
gets full an interrupt is generated and many hundreds of sample
entries are processed and copied to the kernel ring buffer and
eventually get copied to the perf tool. It is during the copy
to the kernel ring buffer that each sample is processed (on s390)
and at that time the register values are extracted.
This is not the original goal, the register values should be read
when the samples are created not when the samples are copied to the
kernel ring buffer.
Prevent this event from being installed in the first place and
return -EOPNOTSUPP. This is already the case for PERF_SAMPLE_REGS_USER.
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Jan Polensky <japo@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
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Define CONFIG_ILLEGAL_POINTER_VALUE to the eye-catching non-zero value
of 0xdead000000000000, consistent with other architectures. Assert at
compile-time that the poison pointers that include/linux/poison.h
defines based on this illegal pointer are beyond the largest useful
virtual addresses. Also, assert at compile-time that the range of poison
pointers per include/linux/poison.h (currently a range of less than
0x10000 addresses) does not overlap with the range used for address
handles for s390's non-MIO PCI instructions.
This enables s390 to track the DMA mappings by the network stack's
page_pool that was introduced with [0]. Other functional changes are not
intended.
Other archictectures have introduced this for various other reasons with
commit 5c178472af24 ("riscv: define ILLEGAL_POINTER_VALUE for 64bit")
commit f6853eb561fb ("powerpc/64: Define ILLEGAL_POINTER_VALUE for 64-bit")
commit bf0c4e047324 ("arm64: kconfig: Move LIST_POISON to a safe value")
commit a29815a333c6 ("core, x86: make LIST_POISON less deadly")
[0] https://lore.kernel.org/all/20250409-page-pool-track-dma-v9-0-6a9ef2e0cba8@redhat.com/
Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Gerd Bayer <gbayer@linux.ibm.com>
Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
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For the exception based __WARN_trap() implementation it is technically not
necessary to prevent tail-call optimization, however it may be confusing to
see warning messages like:
WARNING: arch/s390/kernel/setup.c:1017 at foobar+0x2c/0x50, CPU#0: swapper/0/0
together with a disassembly of a different function caused by tail-call
optimization for the __WARN_trap() call. Prevent that by adding an empty
asm statement. This generates slightly worse code, but should hopefully
avoid confusion.
With this the output looks like:
WARNING: arch/s390/kernel/setup.c:1017 at foobar+0x2c/0x50, CPU#0: swapper/0/0
...
Krnl PSW : 0704c00180000000 000003ffe0119788 (foobar+0x38/0x50)
...
Krnl Code: 000003ffe0119776: e3e0f0980024 stg %r14,152(%r15)
000003ffe011977c: c02000b8992a larl %r2,000003ffe182c9d0
*000003ffe0119782: c0e5007270b7 brasl %r14,000003ffe0f678f0
>000003ffe0119788: ebeff0a00004 lmg %r14,%r15,160(%r15)
000003ffe011978e: 07fe bcr 15,%r14
000003ffe0119790: 47000700 bc 0,1792
000003ffe0119794: 0707 bcr 0,%r7
000003ffe0119796: 0707 bcr 0,%r7
Call Trace:
[<000003ffe0119788>] foobar+0x38/0x50
[<000003ffe185bc2e>] arch_cpu_finalize_init+0x26/0x60
[<000003ffe185654c>] start_kernel+0x53c/0x5d8
[<000003ffe010002e>] startup_continue+0x2e/0x40
A better solution would be to replace or patch the branch instruction to
__WARN_trap() with the monitor call instruction, similar to what is done
for x86 [1]. However s390 does not support static_cond_calls(). Therefore
use the simple approach for the time being.
[1] commit 860238af7a33 ("x86_64/bug: Inline the UD1")
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
|
|
In order to avoid rather pointless warning disassemblies of __WARN_trap()
set the PSW address to the return address of the function which called
__WARN_trap(). This is the address to which __WARN_trap() would return
in any case.
The result is a disassembly of the function which called __WARN_trap(),
which is much more helpful.
Before:
WARNING: arch/s390/kernel/setup.c:1017 at foobar+0x2c/0x20, CPU#0: swapper/0/0
...
Krnl PSW : 0704c00180000000 000003ffe0f675f4 (__WARN_trap+0x4/0x10)
...
Krnl Code: 000003ffe0f675ec: 0707 bcr 0,%r7
000003ffe0f675ee: 0707 bcr 0,%r7
*000003ffe0f675f0: af000001 mc 1,0
>000003ffe0f675f4: 07fe bcr 15,%r14
000003ffe0f675f6: 47000700 bc 0,1792
000003ffe0f675fa: 0707 bcr 0,%r7
000003ffe0f675fc: 0707 bcr 0,%r7
000003ffe0f675fe: 0707 bcr 0,%r7
Call Trace:
[<000003ffe0f675f4>] __WARN_trap+0x4/0x10
[<000003ffe185bc2e>] arch_cpu_finalize_init+0x26/0x60
[<000003ffe185654c>] start_kernel+0x53c/0x5d8
[<000003ffe010002e>] startup_continue+0x2e/0x40
Afterwards:
WARNING: arch/s390/kernel/setup.c:1017 at foobar+0x12/0x30, CPU#0: swapper/0/0
...
Krnl PSW : 0704c00180000000 000003ffe185bc2e (arch_cpu_finalize_init+0x26/0x60)
...
Krnl Code: 000003ffe185bc1c: e3f0ff98ff71 lay %r15,-104(%r15)
000003ffe185bc22: e3e0f0980024 stg %r14,152(%r15)
*000003ffe185bc28: c0e5ff45ed94 brasl %r14,000003ffe0119750
>000003ffe185bc2e: c0e5ffa052b9 brasl %r14,000003ffe0c661a0
000003ffe185bc34: c020fffe86d6 larl %r2,000003ffe182c9e0
000003ffe185bc3a: e548f0a80006 mvghi 168(%r15),6
000003ffe185bc40: e548f0a00005 mvghi 160(%r15),5
000003ffe185bc46: a7690004 lghi %r6,4
Call Trace:
[<000003ffe185bc2e>] arch_cpu_finalize_init+0x26/0x60
[<000003ffe185654c>] start_kernel+0x53c/0x5d8
[<000003ffe010002e>] startup_continue+0x2e/0x40
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
|
|
This is the s390 variant of commit 11bb4944f014 ("x86/bug: Implement
WARN_ONCE()").
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
|
|
This is the s390 variant of commit 5b472b6e5bd9 ("x86_64/bug: Implement
__WARN_printf()"). See the x86 commit for the general idea; there are only
implementation details which are different.
With the new exception based __WARN_printf() implementation the generated
code for a simple WARN() is simplified.
For example:
void foo(int a) { WARN(a, "bar"); }
Before this change the generated code looks like this:
0000000000000210 <foo>:
210: c0 04 00 00 00 00 jgnop 210 <foo>
216: ec 26 00 06 00 7c cgijne %r2,0,222 <foo+0x12>
21c: c0 f4 00 00 00 00 jg 21c <foo+0xc>
21e: R_390_PC32DBL __s390_indirect_jump_r14+0x2
222: eb ef f0 88 00 24 stmg %r14,%r15,136(%r15)
228: b9 04 00 ef lgr %r14,%r15
22c: e3 f0 ff e8 ff 71 lay %r15,-24(%r15)
232: e3 e0 f0 98 00 24 stg %r14,152(%r15)
238: c0 20 00 00 00 00 larl %r2,238 <foo+0x28>
23a: R_390_PC32DBL .LC48+0x2
23e: c0 e5 00 00 00 00 brasl %r14,23e <foo+0x2e>
240: R_390_PLT32DBL __warn_printk+0x2
244: af 00 00 00 mc 0,0
248: eb ef f0 a0 00 04 lmg %r14,%r15,160(%r15)
24e: c0 f4 00 00 00 00 jg 24e <foo+0x3e>
250: R_390_PC32DBL __s390_indirect_jump_r14+0x2
With this change the generated code looks like this:
0000000000000210 <foo>:
210: c0 04 00 00 00 00 jgnop 210 <foo>
216: ec 26 00 06 00 7c cgijne %r2,0,222 <foo+0x12>
21c: c0 f4 00 00 00 00 jg 21c <foo+0xc>
21e: R_390_PC32DBL __s390_indirect_jump_r14+0x2
222: c0 20 00 00 00 00 larl %r2,222 <foobar+0x12>
224: R_390_PC32DBL __bug_table+0x2
228: c0 f4 00 00 00 00 jg 228 <foobar+0x18>
22a: R_390_PLT32DBL __WARN_trap+0x2
Downside is that the call trace now starts at __WARN_trap():
------------[ cut here ]------------
bar
WARNING: arch/s390/kernel/setup.c:1017 at 0x0, CPU#0: swapper/0/0
...
Krnl PSW : 0704c00180000000 000003ffe0f6a3b4 (__WARN_trap+0x4/0x10)
...
Krnl Code: 000003ffe0f6a3ac: 0707 bcr 0,%r7
000003ffe0f6a3ae: 0707 bcr 0,%r7
*000003ffe0f6a3b0: af000001 mc 1,0
>000003ffe0f6a3b4: 07fe bcr 15,%r14
000003ffe0f6a3b6: 47000700 bc 0,1792
000003ffe0f6a3ba: 0707 bcr 0,%r7
000003ffe0f6a3bc: 0707 bcr 0,%r7
000003ffe0f6a3be: 0707 bcr 0,%r7
Call Trace:
[<000003ffe0f6a3b4>] __WARN_trap+0x4/0x10
([<000003ffe185a54c>] start_kernel+0x53c/0x5d8)
[<000003ffe010002e>] startup_continue+0x2e/0x40
Which isn't too helpful. This can be addressed by just skipping __WARN_trap(),
which will be addressed in a later patch.
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
|
|
In case of a monitor call program check the CPU stores the monitor code to
lowcore. Let the program check handler copy it to the pt_regs structure so
it can be used by the monitor call exception handler.
Instead of increasing the pt_regs size add a union which contains both
orig_gpr2 and monitor_code, since orig_gpr2 is not used in case of a
program check.
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
|
|
The first operand address of the monitor call (mc) instruction is the
monitor code. Currently the monitor code is ignored, but this will
change. Therefore add and use MONCODE_BUG instead of a hardcoded zero.
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
|
|
This is just the s390 variant of commit 4f1b701f24be ("x86/bug: Use
BUG_FORMAT for DEBUG_BUGVERBOSE_DETAILED").
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
|
|
Rewrite the bug inline assembly so it uses input operands again instead of
pure macro replacements. This more or less reverts the conversion done when
'cond_str' support was added [1].
Reason for this is that the upcoming __WARN_printf() implementation
requires an inline assembly with an output operand. At the same time input
strings (format specifier and condition string) may contain the special '%'
character. As soon as an inline assembly is specified to have input/output
operands the '%' has a special meaning: e.g. converting the existing
#define __BUG_FLAGS(cond_str, flags) \
asm_inline volatile(__stringify(ASM_BUG_FLAGS(cond_str, flags)));
to
#define __BUG_FLAGS(cond_str, flags) \
asm_inline volatile(__stringify(ASM_BUG_FLAGS(cond_str, flags))::);
will result in a compile error as soon as 'cond_str' contains a '%'
character:
net/core/neighbour.c: In function ‘neigh_table_init’:
././include/linux/compiler_types.h:546:20: error: invalid 'asm': invalid %-code
...
net/core/neighbour.c:1838:17: note: in expansion of macro ‘WARN_ON’
1838 | WARN_ON(tbl->entry_size % NEIGH_PRIV_ALIGN);
| ^~~~~~~
Convert the code, use immediate operands, and also add comments similar to
x86 which are emitted to the generated assembly file, which makes debugging
much easier.
Note: since gcc-8 does not support strings as immediate input operands,
guard the new implementation with CC_HAS_ASM_IMMEDIATE_STRINGS and fallback
to the generic non-exception based warning implementation for incompatible
compilers.
[1] 6584ff203aec ("bugs/s390: Use 'cond_str' in __EMIT_BUG()")
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
|
|
Upcoming changes to s390 specific inline assemblies require the usage of
strings as immediate input operands. This works only with gcc-9 and newer
compilers. With gcc-8 this leads to a compile error:
void bar(void) { asm volatile("" :: "i" ("foo")); }
Results in:
In function 'bar':
warning: asm operand 0 probably doesn't match constraints
asm volatile("" :: "i" ("foo"));
^~~
error: impossible constraint in 'asm'
Provide a CC_HAS_ASM_IMMEDIATE_STRINGS config option which allows to tell
if the compiler supports strings as immediate input operands.
Based on that conditional code can be provided.
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
|
|
Set the TCMA1 bit so that access to TTBR1 addresses with 0xf in their
tag bits will be treated as tag unchecked.
This is important to avoid unwanted tag checking on some
systems. Specifically, SCTLR_EL1.TCF can be set to indicate that no
tag check faults are desired. But the architecture doesn't guarantee
that in this case the system won't still perform tag checks.
Use TCMA1 to ensure that undesired tag checks are not performed. This
bit was already set in the KASAN case. Adding it to the non-KASAN case
prevents tag checking since all TTBR1 address will have a value of 0xf
in their tag bits.
This patch has been measured on an Ampere system to improve the following:
* Eliminate over 98% of kernel-side tag checks during "perf bench
futex hash", as measured with "perf stat".
* Eliminate all MTE overhead (was previously a 25% performance
penalty) from the Phoronix pts/memcached benchmark (1:10 Set:Get
ration with 96 cores).
Reported-by: Taehyun Noh <taehyun@utexas.edu>
Suggested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Carl Worth <carl@os.amperecomputing.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
|
|
The generic entry abort the syscall_trace_enter() sequence if
ptrace_report_syscall_entry() errors out, but arm64 not.
When ptrace requests interception, it should prevent all subsequent
system-call processing, including audit and seccomp. In preparation for
moving arm64 over to the generic entry code, return early if
ptrace_report_syscall_entry() encounters an error.
Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Signed-off-by: Will Deacon <will@kernel.org>
|
|
The generic syscall entry code has the form:
| syscall_trace_enter()
| {
| ptrace_report_syscall_entry()
| }
|
| syscall_exit_work()
| {
| ptrace_report_syscall_exit()
| }
In preparation for moving arm64 over to the generic entry code, split
report_syscall() to two separate enter and exit functions to align
the structure of the arm64 code with syscall_trace_enter() and
syscall_exit_work() from the generic entry code.
No functional changes.
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com>
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Signed-off-by: Will Deacon <will@kernel.org>
|
|
Since commit b3cf07851b6c ("arm64: entry: Switch to generic IRQ
entry"), _TIF_WORK_MASK is never used, so remove it.
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Signed-off-by: Will Deacon <will@kernel.org>
|
|
On creation and clearing of a page table mapping, instrument such calls by
invoking page_table_check_pte_set and page_table_check_pte_clear
respectively. These calls serve as a sanity check against illegal
mappings.
Enable ARCH_SUPPORTS_PAGE_TABLE_CHECK on powerpc, except when HUGETLB_PAGE
is enabled (powerpc has some weirdness in how it implements
set_huge_pte_at(), which may require some further work).
See also:
riscv support in commit 3fee229a8eb9 ("riscv/mm: enable
ARCH_SUPPORTS_PAGE_TABLE_CHECK")
arm64 in commit 42b2547137f5 ("arm64/mm: enable
ARCH_SUPPORTS_PAGE_TABLE_CHECK")
x86_64 in commit d283d422c6c4 ("x86: mm: add x86_64 support for page table
check")
[ajd@linux.ibm.com: rebase, add additional instrumentation, misc fixes]
Link: https://lkml.kernel.org/r/20251219-pgtable_check_v18rebase-v18-12-755bc151a50b@linux.ibm.com
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Guo Weikang <guoweikang.kernel@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Miehlbradt <nicholas@linux.ibm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Thomas Huth <thuth@redhat.com>
Cc: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
In the new set_ptes() API, set_pte_at() (a special case of set_ptes()) is
intended to be instrumented by the page table check facility. There are
however several other routines that constitute the API for setting page
table entries, including set_pmd_at() among others. Such routines are
themselves implemented in terms of set_ptes_at().
A future patch providing support for page table checking on powerpc must
take care to avoid duplicate calls to page_table_check_p{te,md,ud}_set().
Allow for assignment of pte entries without instrumentation through the
set_pte_at_unchecked() routine introduced in this patch.
Cause API-facing routines that call set_pte_at() to instead call
set_pte_at_unchecked(), which will remain uninstrumented by page table
check. set_ptes() is itself implemented by calls to __set_pte_at(), so
this eliminates redundant code.
[ajd@linux.ibm.com: don't change to unchecked for early boot/kernel mappings]
Link: https://lkml.kernel.org/r/20251219-pgtable_check_v18rebase-v18-11-755bc151a50b@linux.ibm.com
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Acked-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Guo Weikang <guoweikang.kernel@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Miehlbradt <nicholas@linux.ibm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Thomas Huth <thuth@redhat.com>
Cc: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Page table checking depends on architectures providing an implementation
of p{te,md,ud}_user_accessible_page. With refactorisations made on
powerpc/mm, the pte_access_permitted() and similar methods verify whether
a userland page is accessible with the required permissions.
Since page table checking is the only user of
p{te,md,ud}_user_accessible_page(), implement these for all platforms,
using some of the same preliminary checks taken by pte_access_permitted()
on that platform.
Since commit 8e9bd41e4ce1 ("powerpc/nohash: Replace pte_user() by
pte_read()") pte_user() is no longer required to be present on all
platforms as it may be equivalent to or implied by pte_read(). Hence
implementations of pte_user_accessible_page() are specialised.
[ajd@linux.ibm.com: rebase and clean up]
Link: https://lkml.kernel.org/r/20251219-pgtable_check_v18rebase-v18-10-755bc151a50b@linux.ibm.com
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Guo Weikang <guoweikang.kernel@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Miehlbradt <nicholas@linux.ibm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Thomas Huth <thuth@redhat.com>
Cc: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
On several powerpc platforms, a page table entry may not imply whether the
relevant mapping is for userspace or kernelspace. Instead, such platforms
infer this by the address which is being accessed.
Add an additional address argument to each of these routines in order to
provide support for page table check on powerpc.
[ajd@linux.ibm.com: rebase on arm64 changes]
Link: https://lkml.kernel.org/r/20251219-pgtable_check_v18rebase-v18-9-755bc151a50b@linux.ibm.com
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: Ingo Molnar <mingo@kernel.org> # x86
Acked-by: Alexandre Ghiti <alexghiti@rivosinc.com> # riscv
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Guo Weikang <guoweikang.kernel@gmail.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Miehlbradt <nicholas@linux.ibm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Thomas Huth <thuth@redhat.com>
Cc: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
[__]page_table_check_pte_clear()
This reverts commit aa232204c468 ("mm/page_table_check: remove unused
parameter in [__]page_table_check_pte_clear").
Reinstate previously unused parameters for the purpose of supporting
powerpc platforms, as many do not encode user/kernel ownership of the page
in the pte, but instead in the address of the access.
[ajd@linux.ibm.com: rebase, fix additional occurrence and loop handling]
Link: https://lkml.kernel.org/r/20251219-pgtable_check_v18rebase-v18-8-755bc151a50b@linux.ibm.com
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: Ingo Molnar <mingo@kernel.org> # x86
Acked-by: Alexandre Ghiti <alexghiti@rivosinc.com> # riscv
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Guo Weikang <guoweikang.kernel@gmail.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Miehlbradt <nicholas@linux.ibm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Thomas Huth <thuth@redhat.com>
Cc: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
[__]page_table_check_pmd_clear()
This reverts commit 1831414cd729 ("mm/page_table_check: remove unused
parameter in [__]page_table_check_pmd_clear").
Reinstate previously unused parameters for the purpose of supporting
powerpc platforms, as many do not encode user/kernel ownership of the page
in the pte, but instead in the address of the access.
[ajd@linux.ibm.com: rebase on arm64 changes]
Link: https://lkml.kernel.org/r/20251219-pgtable_check_v18rebase-v18-7-755bc151a50b@linux.ibm.com
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: Ingo Molnar <mingo@kernel.org> # x86
Acked-by: Alexandre Ghiti <alexghiti@rivosinc.com> # riscv
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Guo Weikang <guoweikang.kernel@gmail.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Miehlbradt <nicholas@linux.ibm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Thomas Huth <thuth@redhat.com>
Cc: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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[__]page_table_check_pud_clear()
This reverts commit 931c38e16499 ("mm/page_table_check: remove unused
parameter in [__]page_table_check_pud_clear").
Reinstate previously unused parameters for the purpose of supporting
powerpc platforms, as many do not encode user/kernel ownership of the page
in the pte, but instead in the address of the access.
[ajd@linux.ibm.com: rebase on arm64 changes]
Link: https://lkml.kernel.org/r/20251219-pgtable_check_v18rebase-v18-6-755bc151a50b@linux.ibm.com
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: Ingo Molnar <mingo@kernel.org> # x86
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Guo Weikang <guoweikang.kernel@gmail.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Miehlbradt <nicholas@linux.ibm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Thomas Huth <thuth@redhat.com>
Cc: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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To provide support for powerpc platforms, provide an addr parameter to the
__page_table_check_ptes_set() and page_table_check_ptes_set() routines.
This parameter is needed on some powerpc platforms which do not encode
whether a mapping is for user or kernel in the pte. On such platforms,
this can be inferred from the addr parameter.
[ajd@linux.ibm.com: rebase on arm64 + riscv changes, update commit message]
Link: https://lkml.kernel.org/r/20251219-pgtable_check_v18rebase-v18-5-755bc151a50b@linux.ibm.com
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: Alexandre Ghiti <alexghiti@rivosinc.com> # riscv
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Guo Weikang <guoweikang.kernel@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Miehlbradt <nicholas@linux.ibm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Thomas Huth <thuth@redhat.com>
Cc: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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[__]page_table_check_pmd[s]_set()
This reverts commit a3b837130b58 ("mm/page_table_check: remove unused
parameter in [__]page_table_check_pmd_set").
Reinstate previously unused parameters for the purpose of supporting
powerpc platforms, as many do not encode user/kernel ownership of the
page in the pte, but instead in the address of the access.
Apply this to __page_table_check_pmds_set(), page_table_check_pmd_set(), and
the page_table_check_pmd_set() wrapper macro.
[ajd@linux.ibm.com: rebase on arm64 + riscv changes, update commit message]
Link: https://lkml.kernel.org/r/20251219-pgtable_check_v18rebase-v18-4-755bc151a50b@linux.ibm.com
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: Ingo Molnar <mingo@kernel.org> # x86
Acked-by: Alexandre Ghiti <alexghiti@rivosinc.com> # riscv
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Guo Weikang <guoweikang.kernel@gmail.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Miehlbradt <nicholas@linux.ibm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Thomas Huth <thuth@redhat.com>
Cc: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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[__]page_table_check_pud[s]_set()
This reverts commit 6d144436d954 ("mm/page_table_check: remove unused
parameter in [__]page_table_check_pud_set").
Reinstate previously unused parameters for the purpose of supporting
powerpc platforms, as many do not encode user/kernel ownership of the page
in the pte, but instead in the address of the access.
Apply this to __page_table_check_puds_set(), page_table_check_puds_set()
and the page_table_check_pud_set() wrapper macro.
[ajd@linux.ibm.com: rebase on riscv + arm64 changes, update commit message]
Link: https://lkml.kernel.org/r/20251219-pgtable_check_v18rebase-v18-3-755bc151a50b@linux.ibm.com
Signed-off-by: Rohan McLure <rmclure@linux.ibm.com>
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: Ingo Molnar <mingo@kernel.org> # x86
Acked-by: Alexandre Ghiti <alexghiti@rivosinc.com> # riscv
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Guo Weikang <guoweikang.kernel@gmail.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Miehlbradt <nicholas@linux.ibm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Thomas Huth <thuth@redhat.com>
Cc: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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To provide support for page table check on powerpc, we need to
reinstate the address parameter in several functions, including
page_table_check_{pte,pmd,pud}_clear().
In preparation for this, add the addr parameter to arm64's
__ptep_get_and_clear_anysz() and change its callsites accordingly.
Link: https://lkml.kernel.org/r/20251219-pgtable_check_v18rebase-v18-2-755bc151a50b@linux.ibm.com
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Guo Weikang <guoweikang.kernel@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Miehlbradt <nicholas@linux.ibm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Rohan McLure <rmclure@linux.ibm.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Thomas Huth <thuth@redhat.com>
Cc: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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Patch series "Support page table check on PowerPC", v18.
Support page table check on PowerPC. Page table check tracks the usage of
of page table entries at each level to ensure that anonymous mappings have
at most one writable consumer, and likewise that file-backed mappings are
not simultaneously also anonymous mappings.
In order to support this infrastructure, a number of helpers or stubs must
be defined or updated for all powerpc platforms. Additionally, we
separate set_pte_at() and set_pte_at_unchecked(), to allow for internal,
uninstrumented mappings.
On some PowerPC platforms, implementing
{pte,pmd,pud}_user_accessible_page() requires the address. We revert
previous changes that removed the address parameter from various
interfaces, and add it to some other interfaces, in order to allow this.
For now, we don't allow page table check alongside HUGETLB_PAGE, due to
the arch-specific complexity of set_huge_page_at(). (I'm sure I could
figure this out, but I have to get this version on this list before I
leave my job.)
This series was initially written by Rohan McLure, who has left IBM and is
no longer working on powerpc.
This patch (of 18):
To provide support for page table check on powerpc, we need to reinstate
the address parameter in several functions, including
page_table_check_{ptes,pmds,puds}_set().
In preparation for this, add the addr parameter to arm64's
__set_ptes_anysz() and change its callsites accordingly.
Link: https://lkml.kernel.org/r/20251219-pgtable_check_v18rebase-v18-0-755bc151a50b@linux.ibm.com
Link: https://lkml.kernel.org/r/20251219-pgtable_check_v18rebase-v18-1-755bc151a50b@linux.ibm.com
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Guo Weikang <guoweikang.kernel@gmail.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Miehlbradt <nicholas@linux.ibm.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Qi Zheng <zhengqi.arch@bytedance.com>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Thomas Huth <thuth@redhat.com>
Cc: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Rohan McLure <rmclure@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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Every architecture that supports hugetlb_cma command line parameter
reserves CMA areas for hugetlb during setup_arch().
This obfuscates the ordering of hugetlb CMA initialization with respect to
the rest initialization of the core MM.
Introduce arch_hugetlb_cma_order() callback to allow architectures report
the desired order-per-bit of CMA areas and provide a week implementation
of arch_hugetlb_cma_order() for architectures that don't support hugetlb
with CMA.
Use this callback in hugetlb_cma_reserve() instead if passing the order as
parameter and call hugetlb_cma_reserve() from mm_core_init_early() rather
than have it spread over architecture specific code.
Link: https://lkml.kernel.org/r/20260111082105.290734-28-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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Commit 665eaf313314 ("x86/setup: call hugetlb_bootmem_alloc early") added
an early call to hugetlb_bootmem_alloc() to setup_arch() to allow HVO
style pre-initialization of vmemmap on x86.
With the ordering of hugetlb reservation vs memory map initialization
sorted out in core MM this no longer needs to be an architecture specific
quirk.
Drop the call to hugetlb_bootmem_alloc() from x86::setup_arch().
Link: https://lkml.kernel.org/r/20260111082105.290734-27-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
All three variants of paging_init() on MIPS are wrappers for
pagetable_init().
Instead of having three identical wrappers, call pagetable_init() directly
from setup_arch() and remove the unnecessary paging_init() functions.
Link: https://lkml.kernel.org/r/20260111082105.290734-26-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Every architecture calls sparse_init() during setup_arch() although the
data structures created by sparse_init() are not used until the
initialization of the core MM.
Beside the code duplication, calling sparse_init() from architecture
specific code causes ordering differences of vmemmap and HVO
initialization on different architectures.
Move the call to sparse_init() from architecture specific code to
free_area_init() to ensure that vmemmap and HVO initialization order is
always the same.
Link: https://lkml.kernel.org/r/20260111082105.290734-25-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
To initialize node, zone and memory map data structures every architecture
calls free_area_init() during setup_arch() and passes it an array of zone
limits.
Beside code duplication it creates "interesting" ordering cases between
allocation and initialization of hugetlb and the memory map. Some
architectures allocate hugetlb pages very early in setup_arch() in certain
cases, some only create hugetlb CMA areas in setup_arch() and sometimes
hugetlb allocations happen mm_core_init().
With arch_zone_limits_init() helper available now on all architectures it
is no longer necessary to call free_area_init() from architecture setup
code. Rather core MM initialization can call arch_zone_limits_init() in a
single place.
This allows to unify ordering of hugetlb vs memory map allocation and
initialization.
Remove the call to free_area_init() from architecture specific code and
place it in a new mm_core_init_early() function that is called immediately
after setup_arch().
After this refactoring it is possible to consolidate hugetlb allocations
and eliminate differences in ordering of hugetlb and memory map
initialization among different architectures.
As the first step of this consolidation move hugetlb_bootmem_alloc() to
mm_core_early_init().
Link: https://lkml.kernel.org/r/20260111082105.290734-24-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Move calculations of zone limits to a dedicated arch_zone_limits_init()
function.
Later MM core will use this function as an architecture specific callback
during nodes and zones initialization and thus there won't be a need to
call free_area_init() from every architecture.
Link: https://lkml.kernel.org/r/20260111082105.290734-23-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Magnus Lindholm <linmag7@gmail.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
