arm64.nomte [ARM64] Unconditionally disable Memory Tagging Extension
support
+ arm64.nosve [ARM64] Unconditionally disable Scalable Vector
+ Extension support
+
+ arm64.nosme [ARM64] Unconditionally disable Scalable Matrix
+ Extension support
+
ataflop= [HW,M68k]
atarimouse= [HW,MOUSE] Atari Mouse
nosocket -- Disable socket memory accounting.
nokmem -- Disable kernel memory accounting.
- checkreqprot [SELINUX] Set initial checkreqprot flag value.
+ checkreqprot= [SELINUX] Set initial checkreqprot flag value.
Format: { "0" | "1" }
See security/selinux/Kconfig help text.
0 -- check protection applied by kernel (includes
(in particular on some ATI chipsets).
The kernel tries to set a reasonable default.
- enforcing [SELINUX] Set initial enforcing status.
+ enforcing= [SELINUX] Set initial enforcing status.
Format: {"0" | "1"}
See security/selinux/Kconfig help text.
0 -- permissive (log only, no denials).
Built with CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON=y,
the default is on.
- This is not compatible with memory_hotplug.memmap_on_memory.
- If both parameters are enabled, hugetlb_free_vmemmap takes
- precedence over memory_hotplug.memmap_on_memory.
+ Note that the vmemmap pages may be allocated from the added
+ memory block itself when memory_hotplug.memmap_on_memory is
+ enabled, those vmemmap pages cannot be optimized even if this
+ feature is enabled. Other vmemmap pages not allocated from
+ the added memory block itself do not be affected.
hung_task_panic=
[KNL] Should the hung task detector generate panics.
ivrs_ioapic [HW,X86-64]
Provide an override to the IOAPIC-ID<->DEVICE-ID
- mapping provided in the IVRS ACPI table. For
- example, to map IOAPIC-ID decimal 10 to
- PCI device 00:14.0 write the parameter as:
+ mapping provided in the IVRS ACPI table.
+ By default, PCI segment is 0, and can be omitted.
+ For example:
+ * To map IOAPIC-ID decimal 10 to PCI device 00:14.0
+ write the parameter as:
ivrs_ioapic[10]=00:14.0
+ * To map IOAPIC-ID decimal 10 to PCI segment 0x1 and
+ PCI device 00:14.0 write the parameter as:
+ ivrs_ioapic[10]=0001:00:14.0
ivrs_hpet [HW,X86-64]
Provide an override to the HPET-ID<->DEVICE-ID
- mapping provided in the IVRS ACPI table. For
- example, to map HPET-ID decimal 0 to
- PCI device 00:14.0 write the parameter as:
+ mapping provided in the IVRS ACPI table.
+ By default, PCI segment is 0, and can be omitted.
+ For example:
+ * To map HPET-ID decimal 0 to PCI device 00:14.0
+ write the parameter as:
ivrs_hpet[0]=00:14.0
+ * To map HPET-ID decimal 10 to PCI segment 0x1 and
+ PCI device 00:14.0 write the parameter as:
+ ivrs_ioapic[10]=0001:00:14.0
ivrs_acpihid [HW,X86-64]
Provide an override to the ACPI-HID:UID<->DEVICE-ID
- mapping provided in the IVRS ACPI table. For
- example, to map UART-HID:UID AMD0020:0 to
- PCI device 00:14.5 write the parameter as:
+ mapping provided in the IVRS ACPI table.
+
+ For example, to map UART-HID:UID AMD0020:0 to
+ PCI segment 0x1 and PCI device ID 00:14.5,
+ write the parameter as:
+ ivrs_acpihid[0001:00:14.5]=AMD0020:0
+
+ By default, PCI segment is 0, and can be omitted.
+ For example, PCI device 00:14.5 write the parameter as:
ivrs_acpihid[00:14.5]=AMD0020:0
js= [HW,JOY] Analog joystick
the KVM_CLEAR_DIRTY ioctl, and only for the pages being
cleared.
- Eager page splitting currently only supports splitting
- huge pages mapped by the TDP MMU.
+ Eager page splitting is only supported when kvm.tdp_mmu=Y.
Default is Y (on).
protected: nVHE-based mode with support for guests whose
state is kept private from the host.
- Not valid if the kernel is running in EL2.
Defaults to VHE/nVHE based on hardware support. Setting
mode to "protected" will disable kexec and hibernation
[KNL,X86,ARM] Boolean flag to enable this feature.
Format: {on | off (default)}
When enabled, runtime hotplugged memory will
- allocate its internal metadata (struct pages)
- from the hotadded memory which will allow to
- hotadd a lot of memory without requiring
- additional memory to do so.
+ allocate its internal metadata (struct pages,
+ those vmemmap pages cannot be optimized even
+ if hugetlb_free_vmemmap is enabled) from the
+ hotadded memory which will allow to hotadd a
+ lot of memory without requiring additional
+ memory to do so.
This feature is disabled by default because it
has some implication on large (e.g. GB)
allocations in some configurations (e.g. small
Note that even when enabled, there are a few cases where
the feature is not effective.
- This is not compatible with hugetlb_free_vmemmap. If
- both parameters are enabled, hugetlb_free_vmemmap takes
- precedence over memory_hotplug.memmap_on_memory.
-
memtest= [KNL,X86,ARM,M68K,PPC,RISCV] Enable memtest
Format: <integer>
default : 0 <disable>
mem_encrypt=on: Activate SME
mem_encrypt=off: Do not activate SME
- Refer to Documentation/virt/kvm/amd-memory-encryption.rst
+ Refer to Documentation/virt/kvm/x86/amd-memory-encryption.rst
for details on when memory encryption can be activated.
mem_sleep_default= [SUSPEND] Default system suspend mode:
improves system performance, but it may also
expose users to several CPU vulnerabilities.
Equivalent to: nopti [X86,PPC]
- kpti=0 [ARM64]
+ if nokaslr then kpti=0 [ARM64]
nospectre_v1 [X86,PPC]
nobp=0 [S390]
nospectre_v2 [X86,PPC,S390,ARM64]
srbds=off [X86,INTEL]
no_entry_flush [PPC]
no_uaccess_flush [PPC]
+ mmio_stale_data=off [X86]
+ retbleed=off [X86]
Exceptions:
This does not have any effect on
Equivalent to: l1tf=flush,nosmt [X86]
mds=full,nosmt [X86]
tsx_async_abort=full,nosmt [X86]
+ mmio_stale_data=full,nosmt [X86]
+ retbleed=auto,nosmt [X86]
mminit_loglevel=
[KNL] When CONFIG_DEBUG_MEMORY_INIT is set, this
log everything. Information is printed at KERN_DEBUG
so loglevel=8 may also need to be specified.
+ mmio_stale_data=
+ [X86,INTEL] Control mitigation for the Processor
+ MMIO Stale Data vulnerabilities.
+
+ Processor MMIO Stale Data is a class of
+ vulnerabilities that may expose data after an MMIO
+ operation. Exposed data could originate or end in
+ the same CPU buffers as affected by MDS and TAA.
+ Therefore, similar to MDS and TAA, the mitigation
+ is to clear the affected CPU buffers.
+
+ This parameter controls the mitigation. The
+ options are:
+
+ full - Enable mitigation on vulnerable CPUs
+
+ full,nosmt - Enable mitigation and disable SMT on
+ vulnerable CPUs.
+
+ off - Unconditionally disable mitigation
+
+ On MDS or TAA affected machines,
+ mmio_stale_data=off can be prevented by an active
+ MDS or TAA mitigation as these vulnerabilities are
+ mitigated with the same mechanism so in order to
+ disable this mitigation, you need to specify
+ mds=off and tsx_async_abort=off too.
+
+ Not specifying this option is equivalent to
+ mmio_stale_data=full.
+
+ For details see:
+ Documentation/admin-guide/hw-vuln/processor_mmio_stale_data.rst
+
module.sig_enforce
[KNL] When CONFIG_MODULE_SIG is set, this means that
modules without (valid) signatures will fail to load.
noautogroup Disable scheduler automatic task group creation.
- nobats [PPC] Do not use BATs for mapping kernel lowmem
- on "Classic" PPC cores.
-
nocache [ARM]
nodsp [SH] Disable hardware DSP at boot time.
just as if they had also been called out in the
rcu_nocbs= boot parameter.
+ Note that this argument takes precedence over
+ the CONFIG_RCU_NOCB_CPU_DEFAULT_ALL option.
+
noiotrap [SH] Disables trapped I/O port accesses.
noirqdebug [X86-32] Disables the code which attempts to detect and
nolapic_timer [X86-32,APIC] Do not use the local APIC timer.
- noltlbs [PPC] Do not use large page/tlb entries for kernel
- lowmem mapping on PPC40x and PPC8xx
-
nomca [IA-64] Disable machine check abort handling
nomce [X86-32] Disable Machine Check Exception
noreplace-smp [X86-32,SMP] Don't replace SMP instructions
with UP alternatives
- nordrand [X86] Disable kernel use of the RDRAND and
- RDSEED instructions even if they are supported
- by the processor. RDRAND and RDSEED are still
- available to user space applications.
-
noresume [SWSUSP] Disables resume and restores original swap
space.
no-callback mode from boot but the mode may be
toggled at runtime via cpusets.
+ Note that this argument takes precedence over
+ the CONFIG_RCU_NOCB_CPU_DEFAULT_ALL option.
+
rcu_nocb_poll [KNL]
Rather than requiring that offloaded CPUs
(specified by rcu_nocbs= above) explicitly
When RCU_NOCB_CPU is set, also adjust the
priority of NOCB callback kthreads.
+ rcutree.rcu_divisor= [KNL]
+ Set the shift-right count to use to compute
+ the callback-invocation batch limit bl from
+ the number of callbacks queued on this CPU.
+ The result will be bounded below by the value of
+ the rcutree.blimit kernel parameter. Every bl
+ callbacks, the softirq handler will exit in
+ order to allow the CPU to do other work.
+
+ Please note that this callback-invocation batch
+ limit applies only to non-offloaded callback
+ invocation. Offloaded callbacks are instead
+ invoked in the context of an rcuoc kthread, which
+ scheduler will preempt as it does any other task.
+
+ rcutree.nocb_nobypass_lim_per_jiffy= [KNL]
+ On callback-offloaded (rcu_nocbs) CPUs,
+ RCU reduces the lock contention that would
+ otherwise be caused by callback floods through
+ use of the ->nocb_bypass list. However, in the
+ common non-flooded case, RCU queues directly to
+ the main ->cblist in order to avoid the extra
+ overhead of the ->nocb_bypass list and its lock.
+ But if there are too many callbacks queued during
+ a single jiffy, RCU pre-queues the callbacks into
+ the ->nocb_bypass queue. The definition of "too
+ many" is supplied by this kernel boot parameter.
+
rcutree.rcu_nocb_gp_stride= [KNL]
Set the number of NOCB callback kthreads in
each group, which defaults to the square root
retain_initrd [RAM] Keep initrd memory after extraction
+ retbleed= [X86] Control mitigation of RETBleed (Arbitrary
+ Speculative Code Execution with Return Instructions)
+ vulnerability.
+
+ off - no mitigation
+ auto - automatically select a migitation
+ auto,nosmt - automatically select a mitigation,
+ disabling SMT if necessary for
+ the full mitigation (only on Zen1
+ and older without STIBP).
+ ibpb - mitigate short speculation windows on
+ basic block boundaries too. Safe, highest
+ perf impact.
+ unret - force enable untrained return thunks,
+ only effective on AMD f15h-f17h
+ based systems.
+ unret,nosmt - like unret, will disable SMT when STIBP
+ is not available.
+
+ Selecting 'auto' will choose a mitigation method at run
+ time according to the CPU.
+
+ Not specifying this option is equivalent to retbleed=auto.
+
rfkill.default_state=
0 "airplane mode". All wifi, bluetooth, wimax, gps, fm,
etc. communication is blocked by default.
cache (risks via metadata attacks are mostly
unchanged). Debug options disable merging on their
own.
- For more information see Documentation/vm/slub.rst.
+ For more information see Documentation/mm/slub.rst.
slab_max_order= [MM, SLAB]
Determines the maximum allowed order for slabs.
slub_debug can create guard zones around objects and
may poison objects when not in use. Also tracks the
last alloc / free. For more information see
- Documentation/vm/slub.rst.
+ Documentation/mm/slub.rst.
slub_max_order= [MM, SLUB]
Determines the maximum allowed order for slabs.
A high setting may cause OOMs due to memory
fragmentation. For more information see
- Documentation/vm/slub.rst.
+ Documentation/mm/slub.rst.
slub_min_objects= [MM, SLUB]
The minimum number of objects per slab. SLUB will
the number of objects indicated. The higher the number
of objects the smaller the overhead of tracking slabs
and the less frequently locks need to be acquired.
- For more information see Documentation/vm/slub.rst.
+ For more information see Documentation/mm/slub.rst.
slub_min_order= [MM, SLUB]
Determines the minimum page order for slabs. Must be
lower than slub_max_order.
- For more information see Documentation/vm/slub.rst.
+ For more information see Documentation/mm/slub.rst.
slub_merge [MM, SLUB]
Same with slab_merge.
eibrs - enhanced IBRS
eibrs,retpoline - enhanced IBRS + Retpolines
eibrs,lfence - enhanced IBRS + LFENCE
+ ibrs - use IBRS to protect kernel
Not specifying this option is equivalent to
spectre_v2=auto.
expediting. Set to zero to disable automatic
expediting.
+ srcutree.srcu_max_nodelay [KNL]
+ Specifies the number of no-delay instances
+ per jiffy for which the SRCU grace period
+ worker thread will be rescheduled with zero
+ delay. Beyond this limit, worker thread will
+ be rescheduled with a sleep delay of one jiffy.
+
+ srcutree.srcu_max_nodelay_phase [KNL]
+ Specifies the per-grace-period phase, number of
+ non-sleeping polls of readers. Beyond this limit,
+ grace period worker thread will be rescheduled
+ with a sleep delay of one jiffy, between each
+ rescan of the readers, for a grace period phase.
+
+ srcutree.srcu_retry_check_delay [KNL]
+ Specifies number of microseconds of non-sleeping
+ delay between each non-sleeping poll of readers.
+
srcutree.small_contention_lim [KNL]
Specifies the number of update-side contention
events per jiffy will be tolerated before
it if 0 is given (See Documentation/admin-guide/cgroup-v1/memory.rst)
swiotlb= [ARM,IA-64,PPC,MIPS,X86]
- Format: { <int> | force | noforce }
+ Format: { <int> [,<int>] | force | noforce }
<int> -- Number of I/O TLB slabs
+ <int> -- Second integer after comma. Number of swiotlb
+ areas with their own lock. Will be rounded up
+ to a power of 2.
force -- force using of bounce buffers even if they
wouldn't be automatically used by the kernel
noforce -- Never use bounce buffers (for debugging)
If BSD-style process accounting is enabled these values control
its behaviour. If free space on filesystem where the log lives
-goes below ``lowwater``% accounting suspends. If free space gets
-above ``highwater``% accounting resumes. ``frequency`` determines
+goes below ``lowwater``\ % accounting suspends. If free space gets
+above ``highwater``\ % accounting resumes. ``frequency`` determines
how often do we check the amount of free space (value is in
seconds). Default:
Documentation/admin-guide/kernel-parameters.rst).
+ nmi_wd_lpm_factor (PPC only)
+ ============================
+
+ Factor to apply to the NMI watchdog timeout (only when ``nmi_watchdog`` is
+ set to 1). This factor represents the percentage added to
+ ``watchdog_thresh`` when calculating the NMI watchdog timeout during an
+ LPM. The soft lockup timeout is not impacted.
+
+ A value of 0 means no change. The default value is 200 meaning the NMI
+ watchdog is set to 30s (based on ``watchdog_thresh`` equal to 10).
+
+
numa_balancing
==============
6LOWPAN GENERIC (BTLE/IEEE 802.15.4)
S: Maintained
F: include/uapi/linux/virtio_9p.h
F: net/9p/
+A64FX DIAG DRIVER
+S: Supported
+F: drivers/soc/fujitsu/a64fx-diag.c
+
A8293 MEDIA DRIVER
F: drivers/hwmon/abituguru3.c
ACCES 104-DIO-48E GPIO DRIVER
S: Maintained
F: drivers/gpio/gpio-104-dio-48e.c
ACCES 104-IDI-48 GPIO DRIVER
S: Maintained
F: drivers/gpio/gpio-104-idi-48.c
ACCES 104-IDIO-16 GPIO DRIVER
S: Maintained
F: drivers/gpio/gpio-104-idio-16.c
ACCES 104-QUAD-8 DRIVER
S: Maintained
F: drivers/counter/104-quad-8.c
ACCES PCI-IDIO-16 GPIO DRIVER
S: Maintained
F: drivers/gpio/gpio-pci-idio-16.c
ACCES PCIe-IDIO-24 GPIO DRIVER
S: Maintained
F: drivers/gpio/gpio-pcie-idio-24.c
ACPI VIOT DRIVER
S: Maintained
F: drivers/acpi/viot.c
F: include/linux/acpi_viot.h
F: Documentation/i2c/busses/i2c-ali1563.rst
F: drivers/i2c/busses/i2c-ali1563.c
+ALIBABA ELASTIC RDMA DRIVER
+S: Supported
+F: drivers/infiniband/hw/erdma
+F: include/uapi/rdma/erdma-abi.h
+
ALIENWARE WMI DRIVER
S: Maintained
F: Documentation/devicetree/bindings/media/allwinner,sun4i-a10-csi.yaml
F: drivers/media/platform/sunxi/sun4i-csi/
+ALLWINNER A31 MIPI CSI-2 BRIDGE DRIVER
+S: Maintained
+T: git git://linuxtv.org/media_tree.git
+F: Documentation/devicetree/bindings/media/allwinner,sun6i-a31-mipi-csi2.yaml
+F: drivers/media/platform/sunxi/sun6i-mipi-csi2/
+
ALLWINNER CPUFREQ DRIVER
F: drivers/staging/media/sunxi/cedrus/
ALPHA PORT
AMD IOMMU (AMD-VI)
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git
F: drivers/iommu/amd/
S: Maintained
-F: drivers/platform/x86/amd-pmc.*
+F: drivers/platform/x86/amd/pmc.c
AMD HSMP DRIVER
F: Documentation/x86/amd_hsmp.rst
F: arch/x86/include/asm/amd_hsmp.h
F: arch/x86/include/uapi/asm/amd_hsmp.h
-F: drivers/platform/x86/amd_hsmp.c
+F: drivers/platform/x86/amd/hsmp.c
AMD POWERPLAY AND SWSMU
AMD XGBE DRIVER
S: Supported
F: arch/arm64/boot/dts/amd/amd-seattle-xgbe*.dtsi
-M: Hridya Valsaraju <hridya@google.com>
+M: Carlos Llamas <cmllamas@google.com>
S: Supported
F: sound/aoa/
APEX EMBEDDED SYSTEMS STX104 IIO DRIVER
S: Maintained
F: drivers/iio/adc/stx104.c
W: http://www.aquantia.com
F: drivers/net/ethernet/aquantia/atlantic/aq_ptp*
+AR0521 ON SEMICONDUCTOR CAMERA SENSOR DRIVER
+S: Maintained
+F: Documentation/devicetree/bindings/media/i2c/onnn,ar0521.yaml
+F: drivers/media/i2c/ar0521.c
+
ARASAN NAND CONTROLLER DRIVER
F: Documentation/devicetree/bindings/arm/arm,vexpress-juno.yaml
F: Documentation/devicetree/bindings/auxdisplay/arm,versatile-lcd.yaml
F: Documentation/devicetree/bindings/clock/arm,syscon-icst.yaml
-F: Documentation/devicetree/bindings/i2c/i2c-versatile.txt
+F: Documentation/devicetree/bindings/i2c/arm,i2c-versatile.yaml
F: Documentation/devicetree/bindings/interrupt-controller/arm,versatile-fpga-irq.txt
F: Documentation/devicetree/bindings/mtd/mtd-physmap.yaml
F: arch/arm/boot/dts/arm-realview-*
S: Maintained
W: https://asahilinux.org
F: Documentation/devicetree/bindings/arm/apple.yaml
F: Documentation/devicetree/bindings/arm/apple/*
F: Documentation/devicetree/bindings/clock/apple,nco.yaml
+F: Documentation/devicetree/bindings/dma/apple,admac.yaml
F: Documentation/devicetree/bindings/i2c/apple,i2c.yaml
F: Documentation/devicetree/bindings/interrupt-controller/apple,*
F: Documentation/devicetree/bindings/iommu/apple,dart.yaml
F: Documentation/devicetree/bindings/watchdog/apple,wdt.yaml
F: arch/arm64/boot/dts/apple/
F: drivers/clk/clk-apple-nco.c
+F: drivers/dma/apple-admac.c
F: drivers/i2c/busses/i2c-pasemi-core.c
F: drivers/i2c/busses/i2c-pasemi-platform.c
F: drivers/iommu/apple-dart.c
S: Supported
Q: https://patchwork.ozlabs.org/project/linux-aspeed/list/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/joel/aspeed.git
+F: Documentation/devicetree/bindings/arm/aspeed/
F: arch/arm/boot/dts/aspeed-*
F: arch/arm/mach-aspeed/
N: aspeed
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux.git
F: Documentation/ABI/testing/sysfs-bus-coresight-devices-*
-F: Documentation/devicetree/bindings/arm/coresight-cpu-debug.txt
-F: Documentation/devicetree/bindings/arm/coresight-cti.yaml
-F: Documentation/devicetree/bindings/arm/coresight.txt
-F: Documentation/devicetree/bindings/arm/ete.yaml
-F: Documentation/devicetree/bindings/arm/trbe.yaml
+F: Documentation/devicetree/bindings/arm/arm,coresight-*.yaml
+F: Documentation/devicetree/bindings/arm/arm,embedded-trace-extension.yaml
+F: Documentation/devicetree/bindings/arm/arm,trace-buffer-extension.yaml
F: Documentation/trace/coresight/*
F: drivers/hwtracing/coresight/*
F: include/dt-bindings/arm/coresight-cti-dt.h
S: Maintained
F: Documentation/devicetree/bindings/arm/hpe,gxp.yaml
+F: Documentation/devicetree/bindings/spi/hpe,gxp-spi.yaml
F: Documentation/devicetree/bindings/timer/hpe,gxp-timer.yaml
F: arch/arm/boot/dts/hpe-bmc*
F: arch/arm/boot/dts/hpe-gxp*
F: arch/arm/mach-hpe/
F: drivers/clocksource/timer-gxp.c
+F: drivers/spi/spi-gxp.c
F: drivers/watchdog/gxp-wdt.c
ARM/IGEP MACHINE SUPPORT
F: Documentation/devicetree/bindings/arm/ste-*
F: Documentation/devicetree/bindings/arm/ux500.yaml
F: Documentation/devicetree/bindings/arm/ux500/
-F: Documentation/devicetree/bindings/i2c/i2c-nomadik.txt
+F: Documentation/devicetree/bindings/i2c/st,nomadik-i2c.yaml
F: arch/arm/boot/dts/ste-*
F: arch/arm/mach-nomadik/
F: arch/arm/mach-ux500/
F: Documentation/devicetree/bindings/arm/npcm/*
F: arch/arm/boot/dts/nuvoton-npcm*
F: arch/arm/mach-npcm/
+F: arch/arm64/boot/dts/nuvoton/
F: drivers/*/*npcm*
F: drivers/*/*/*npcm*
F: include/dt-bindings/clock/nuvoton,npcm7xx-clock.h
+F: include/dt-bindings/clock/nuvoton,npcm845-clk.h
ARM/NUVOTON WPCM450 ARCHITECTURE
S: Maintained
F: arch/arm64/boot/dts/freescale/s32g*.dts*
N: oxnas
ARM/PALM TREO SUPPORT
-S: Maintained
-W: http://hackndev.com
+S: Orphan
F: arch/arm/mach-pxa/palmtreo.*
ARM/PALMTX,PALMT5,PALMLD,PALMTE2,PALMTC SUPPORT
ARM/QUALCOMM SUPPORT
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux.git
S: Maintained
F: Documentation/devicetree/bindings/arm/rda.yaml
F: Documentation/devicetree/bindings/gpio/gpio-rda.yaml
-F: Documentation/devicetree/bindings/interrupt-controller/rda,8810pl-intc.txt
+F: Documentation/devicetree/bindings/interrupt-controller/rda,8810pl-intc.yaml
F: Documentation/devicetree/bindings/serial/rda,8810pl-uart.yaml
F: Documentation/devicetree/bindings/timer/rda,8810pl-timer.yaml
F: arch/arm/boot/dts/rda8810pl-*
C: irc://irc.libera.chat/renesas-soc
T: git git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel.git next
F: Documentation/devicetree/bindings/arm/renesas.yaml
+F: Documentation/devicetree/bindings/hwinfo/renesas,prr.yaml
+F: Documentation/devicetree/bindings/soc/renesas/
F: arch/arm64/boot/dts/renesas/
F: drivers/soc/renesas/
F: include/linux/soc/renesas/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux.git
F: Documentation/arm/samsung/
F: Documentation/devicetree/bindings/arm/samsung/
+F: Documentation/devicetree/bindings/hwinfo/samsung,*
F: Documentation/devicetree/bindings/power/pd-samsung.yaml
F: Documentation/devicetree/bindings/soc/samsung/
F: arch/arm/boot/dts/exynos*
S: Maintained
+F: Documentation/devicetree/bindings/media/samsung,s5pv210-jpeg.yaml
F: drivers/media/platform/samsung/s5p-jpeg/
ARM/SAMSUNG S5P SERIES Multi Format Codec (MFC) SUPPORT
C: irc://irc.libera.chat/renesas-soc
T: git git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel.git next
F: Documentation/devicetree/bindings/arm/renesas.yaml
+F: Documentation/devicetree/bindings/soc/renesas/
F: arch/arm/boot/dts/emev2*
F: arch/arm/boot/dts/gr-peach*
F: arch/arm/boot/dts/iwg20d-q7*
N: stm32
N: stm
+ARM/SUNPLUS SP7021 SOC SUPPORT
+S: Maintained
+W: https://sunplus-tibbo.atlassian.net/wiki/spaces/doc/overview
+F: Documentation/devicetree/bindings/arm/sunplus,sp7021.yaml
+F: Documentation/devicetree/bindings/clock/sunplus,sp7021-clkc.yaml
+F: Documentation/devicetree/bindings/interrupt-controller/sunplus,sp7021-intc.yaml
+F: Documentation/devicetree/bindings/reset/sunplus,reset.yaml
+F: arch/arm/boot/dts/sunplus-sp7021*.dts*
+F: arch/arm/configs/sp7021_*defconfig
+F: arch/arm/mach-sunplus/
+F: drivers/irqchip/irq-sp7021-intc.c
+F: drivers/reset/reset-sunplus.c
+F: include/dt-bindings/clock/sunplus,sp7021-clkc.h
+F: include/dt-bindings/reset/sunplus,sp7021-reset.h
+
ARM/Synaptics SoC support
S: Supported
F: Documentation/devicetree/bindings/arm/ti/k3.yaml
+F: Documentation/devicetree/bindings/hwinfo/ti,k3-socinfo.yaml
F: arch/arm64/boot/dts/ti/Makefile
F: arch/arm64/boot/dts/ti/k3-*
F: include/dt-bindings/pinctrl/k3.h
F: Documentation/devicetree/bindings/media/aspeed-video.txt
F: drivers/media/platform/aspeed/
+ASPEED USB UDC DRIVER
+S: Maintained
+F: Documentation/devicetree/bindings/usb/aspeed,ast2600-udc.yaml
+F: drivers/usb/gadget/udc/aspeed_udc.c
+
ASUS NOTEBOOKS AND EEEPC ACPI/WMI EXTRAS DRIVERS
F: drivers/net/wireless/broadcom/b43legacy/
BACKLIGHT CLASS/SUBSYSTEM
-M: Lee Jones <lee.jones@linaro.org>
+M: Lee Jones <lee@kernel.org>
F: Documentation/devicetree/bindings/iio/accel/bosch,bma400.yaml
F: drivers/iio/accel/bma400*
-BPF (Safe dynamic programs and tools)
+BPF [GENERAL] (Safe Dynamic Programs and Tools)
+R: Song Liu <song@kernel.org>
S: Supported
W: https://bpf.io/
F: tools/bpf/
F: tools/lib/bpf/
F: tools/testing/selftests/bpf/
-N: bpf
-K: bpf
BPF JIT for ARM
-S: Maintained
+S: Odd Fixes
F: arch/arm/net/
BPF JIT for ARM64
S: Supported
F: arch/arm64/net/
BPF JIT for MIPS (32-BIT AND 64-BIT)
S: Maintained
F: arch/mips/net/
BPF JIT for NFP NICs
-S: Supported
+S: Odd Fixes
F: drivers/net/ethernet/netronome/nfp/bpf/
BPF JIT for POWERPC (32-BIT AND 64-BIT)
-S: Maintained
+S: Supported
F: arch/powerpc/net/
BPF JIT for RISC-V (32-bit)
S: Maintained
F: arch/riscv/net/
BPF JIT for RISC-V (64-bit)
S: Maintained
F: arch/riscv/net/
-S: Maintained
+S: Supported
F: arch/s390/net/
X: arch/s390/net/pnet.c
BPF JIT for SPARC (32-BIT AND 64-BIT)
-S: Maintained
+S: Odd Fixes
F: arch/sparc/net/
BPF JIT for X86 32-BIT
-S: Maintained
+S: Odd Fixes
F: arch/x86/net/bpf_jit_comp32.c
BPF JIT for X86 64-BIT
S: Supported
F: arch/x86/net/
X: arch/x86/net/bpf_jit_comp32.c
-BPF LSM (Security Audit and Enforcement using BPF)
+BPF [CORE]
+S: Maintained
+F: kernel/bpf/verifier.c
+F: kernel/bpf/tnum.c
+F: kernel/bpf/core.c
+F: kernel/bpf/syscall.c
+F: kernel/bpf/dispatcher.c
+F: kernel/bpf/trampoline.c
+F: include/linux/bpf*
+F: include/linux/filter.h
+
+BPF [BTF]
+S: Maintained
+F: kernel/bpf/btf.c
+F: include/linux/btf*
+
+BPF [TRACING]
+S: Maintained
+F: kernel/trace/bpf_trace.c
+F: kernel/bpf/stackmap.c
+
+BPF [NETWORKING] (tc BPF, sock_addr)
+S: Maintained
+F: net/core/filter.c
+F: net/sched/act_bpf.c
+F: net/sched/cls_bpf.c
+
+BPF [NETWORKING] (struct_ops, reuseport)
+S: Maintained
+F: kernel/bpf/bpf_struct*
+
+BPF [SECURITY & LSM] (Security Audit and Enforcement using BPF)
F: kernel/bpf/bpf_lsm.c
F: security/bpf/
-BPFTOOL
+BPF [STORAGE & CGROUPS]
+S: Maintained
+F: kernel/bpf/cgroup.c
+F: kernel/bpf/*storage.c
+F: kernel/bpf/bpf_lru*
+
+BPF [RINGBUF]
+S: Maintained
+F: kernel/bpf/ringbuf.c
+
+BPF [ITERATOR]
+S: Maintained
+F: kernel/bpf/*iter.c
+
+BPF [L7 FRAMEWORK] (sockmap)
+S: Maintained
+F: include/linux/skmsg.h
+F: net/core/skmsg.c
+F: net/core/sock_map.c
+F: net/ipv4/tcp_bpf.c
+F: net/ipv4/udp_bpf.c
+F: net/unix/unix_bpf.c
+
+BPF [LIBRARY] (libbpf)
+S: Maintained
+F: tools/lib/bpf/
+
+BPF [TOOLING] (bpftool)
S: Maintained
F: kernel/bpf/disasm.*
F: tools/bpf/bpftool/
+BPF [SELFTESTS] (Test Runners & Infrastructure)
+S: Maintained
+F: tools/testing/selftests/bpf/
+
+BPF [MISC]
+S: Odd Fixes
+K: (?:\b|_)bpf(?:\b|_)
+
BROADCOM B44 10/100 ETHERNET DRIVER
S: Maintained
T: git git://github.com/broadcom/stblinux.git
F: Documentation/devicetree/bindings/arm/bcm/brcm,bcmbca.yaml
-F: arch/arm/boot/dts/bcm47622.dtsi
-F: arch/arm/boot/dts/bcm947622.dts
+F: arch/arm64/boot/dts/broadcom/bcmbca/*
N: bcmbca
N: bcm[9]?47622
+N: bcm[9]?4912
+N: bcm[9]?63138
+N: bcm[9]?63146
+N: bcm[9]?63148
+N: bcm[9]?63158
+N: bcm[9]?63178
+N: bcm[9]?6756
+N: bcm[9]?6813
+N: bcm[9]?6846
+N: bcm[9]?6855
+N: bcm[9]?6856
+N: bcm[9]?6858
+N: bcm[9]?6878
BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE
S: Maintained
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/nsaenz/linux-rpi.git
+T: git git://github.com/broadcom/stblinux.git
F: Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
F: drivers/pci/controller/pcie-brcmstb.c
F: drivers/staging/vc04_services
F: arch/arm/boot/dts/bcm47189*
F: arch/arm/boot/dts/bcm53573*
-BROADCOM BCM63XX ARM ARCHITECTURE
-S: Maintained
-T: git git://github.com/broadcom/stblinux.git
-N: bcm63xx
-
BROADCOM BCM63XX/BCM33XX UDC DRIVER
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git
-F: Documentation/devicetree/bindings/devfreq/exynos-bus.txt
+F: Documentation/devicetree/bindings/interconnect/samsung,exynos-bus.yaml
F: drivers/devfreq/exynos-bus.c
BUSLOGIC SCSI DRIVER
F: Documentation/devicetree/bindings/sound/cirrus,cs*
F: include/dt-bindings/sound/cs*
F: sound/pci/hda/cs*
+F: sound/pci/hda/hda_cs_dsp_ctl.*
F: sound/soc/codecs/cs*
CIRRUS LOGIC DSP FIRMWARE DRIVER
S: Supported
B: https://github.com/ClangBuiltLinux/linux/issues
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/clang/features
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/hardening
F: include/linux/cfi.h
F: kernel/cfi.c
T: git git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git
F: Documentation/devicetree/bindings/clock/
F: drivers/clk/
+F: include/dt-bindings/clock/
F: include/linux/clk-pr*
F: include/linux/clk/
F: include/linux/of_clk.h
S: Maintained
CONTEXT TRACKING
S: Maintained
F: kernel/context_tracking.c
F: include/linux/context_tracking*
F: drivers/hwmon/corsair-psu.c
COUNTER SUBSYSTEM
S: Maintained
+T: git https://git.linaro.org/people/william.gray/counter.git
F: Documentation/ABI/testing/sysfs-bus-counter
F: Documentation/driver-api/generic-counter.rst
F: drivers/counter/
F: drivers/net/ethernet/chelsio/cxgb3/
CXGB3 ISCSI DRIVER (CXGB3I)
-M: Karen Xie <kxie@chelsio.com>
+M: Varun Prakash <varun@chelsio.com>
S: Supported
W: http://www.chelsio.com
F: drivers/net/ethernet/chelsio/cxgb4/
CXGB4 ISCSI DRIVER (CXGB4I)
-M: Karen Xie <kxie@chelsio.com>
+M: Varun Prakash <varun@chelsio.com>
S: Supported
W: http://www.chelsio.com
S: Maintained
F: Documentation/ABI/testing/sysfs-kernel-mm-damon
F: Documentation/admin-guide/mm/damon/
-F: Documentation/vm/damon/
+F: Documentation/mm/damon/
F: include/linux/damon.h
F: include/trace/events/damon.h
F: mm/damon/
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git
F: Documentation/devicetree/bindings/devfreq/
+F: Documentation/devicetree/bindings/interconnect/mediatek,cci.yaml
F: drivers/devfreq/
F: include/linux/devfreq.h
F: include/trace/events/devfreq.h
F: Documentation/devicetree/bindings/input/da90??-onkey.txt
F: Documentation/devicetree/bindings/input/dlg,da72??.txt
F: Documentation/devicetree/bindings/mfd/da90*.txt
+F: Documentation/devicetree/bindings/mfd/da90*.yaml
F: Documentation/devicetree/bindings/regulator/dlg,da9*.yaml
F: Documentation/devicetree/bindings/regulator/da92*.txt
F: Documentation/devicetree/bindings/regulator/slg51000.txt
F: sound/soc/codecs/da[79]*.[ch]
DIAMOND SYSTEMS GPIO-MM GPIO DRIVER
S: Maintained
F: drivers/gpio/gpio-gpio-mm.c
F: Documentation/devicetree/bindings/dma/
F: Documentation/driver-api/dmaengine/
F: drivers/dma/
+F: include/dt-bindings/dma/
F: include/linux/dma/
F: include/linux/dmaengine.h
F: include/linux/of_dma.h
S: Supported
W: http://git.infradead.org/users/hch/dma-mapping.git
T: git git://git.infradead.org/users/hch/dma-mapping.git
DMA MAPPING BENCHMARK
F: kernel/dma/map_benchmark.c
F: tools/testing/selftests/dma/
F: drivers/net/ethernet/freescale/dpaa2/dpaa2-switch*
F: drivers/net/ethernet/freescale/dpaa2/dpsw*
-DPT_I2O SCSI RAID DRIVER
-S: Maintained
-W: http://www.adaptec.com/
-F: drivers/scsi/dpt*
-F: drivers/scsi/dpt/
-
DRBD DRIVER
F: Documentation/devicetree/bindings/display/bridge/chipone,icn6211.yaml
F: drivers/gpu/drm/bridge/chipone-icn6211.c
+DRM DRIVER FOR EBBG FT8719 PANEL
+S: Maintained
+T: git git://anongit.freedesktop.org/drm/drm-misc
+F: Documentation/devicetree/bindings/display/panel/ebbg,ft8719.yaml
+F: drivers/gpu/drm/panel/panel-ebbg-ft8719.c
+
DRM DRIVER FOR FARADAY TVE200 TV ENCODER
S: Maintained
F: drivers/gpu/drm/i810/
F: include/uapi/drm/i810_drm.h
+DRM DRIVER FOR LOGICVC DISPLAY CONTROLLER
+S: Supported
+T: git git://anongit.freedesktop.org/drm/drm-misc
+F: drivers/gpu/drm/logicvc/
+
DRM DRIVER FOR LVDS PANELS
F: drivers/gpu/drm/savage/
F: include/uapi/drm/savage_drm.h
-DRM DRIVER FOR SIMPLE FRAMEBUFFERS
+DRM DRIVER FOR FIRMWARE FRAMEBUFFERS
S: Maintained
T: git git://anongit.freedesktop.org/drm/drm-misc
+F: drivers/gpu/drm/drm_aperture.c
F: drivers/gpu/drm/tiny/simpledrm.c
+F: drivers/video/aperture.c
+F: include/drm/drm_aperture.h
+F: include/linux/aperture.h
DRM DRIVER FOR SIS VIDEO CARDS
S: Orphan / Obsolete
S: Orphan / Obsolete
F: drivers/gpu/drm/tdfx/
+DRM DRIVER FOR TI DLPC3433 MIPI DSI TO DMD BRIDGE
+S: Maintained
+F: Documentation/devicetree/bindings/display/bridge/ti,dlpc3433.yaml
+F: drivers/gpu/drm/bridge/ti-dlpc3433.c
+
DRM DRIVER FOR TI SN65DSI86 BRIDGE CHIP
F: Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml
DRM DRIVERS FOR EXYNOS
F: drivers/gpu/drm/imx/
F: drivers/gpu/ipu-v3/
+DRM DRIVERS FOR FREESCALE IMX BRIDGE
+S: Maintained
+F: Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-ldb.yaml
+F: Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-combiner.yaml
+F: Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-link.yaml
+F: Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pxl2dpi.yaml
+F: drivers/gpu/drm/bridge/imx/
+
DRM DRIVERS FOR GMA500 (Poulsbo, Moorestown and derivative chipsets)
S: Supported
F: Documentation/devicetree/bindings/display/mediatek/
F: drivers/gpu/drm/mediatek/
+F: drivers/phy/mediatek/phy-mtk-dp.c
F: drivers/phy/mediatek/phy-mtk-hdmi*
F: drivers/phy/mediatek/phy-mtk-mipi*
S: Supported
T: git git://anongit.freedesktop.org/tegra/linux.git
-F: Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
+F: Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.yaml
F: Documentation/devicetree/bindings/gpu/host1x/
F: drivers/gpu/drm/tegra/
F: drivers/gpu/host1x/
DRM DRIVERS FOR V3D
S: Supported
T: git git://anongit.freedesktop.org/drm/drm-misc
F: Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml
S: Maintained
F: drivers/net/ethernet/ibm/ehea/
+ELM327 CAN NETWORK DRIVER
+S: Maintained
+F: Documentation/networking/device_drivers/can/can327.rst
+F: drivers/net/can/can327.c
+
EM28XX VIDEO4LINUX DRIVER
F: drivers/media/usb/em28xx/
EMBEDDED LINUX
-M: Matt Mackall <mpm@selenic.com>
+M: Olivia Mackall <olivia@selenic.com>
S: Maintained
EROFS FILE SYSTEM
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
F: include/linux/errseq.h
F: lib/errseq.c
+ESD CAN/USB DRIVERS
+S: Maintained
+F: drivers/net/can/usb/esd_usb.c
+
ET131X NETWORK DRIVER
S: Odd Fixes
EXYNOS SYSMMU (IOMMU) driver
S: Maintained
F: drivers/iommu/exynos-iommu.c
F: include/linux/fs_types.h
F: include/uapi/linux/fs.h
F: include/uapi/linux/openat2.h
-X: fs/io-wq.c
-X: fs/io-wq.h
-X: fs/io_uring.c
FINTEK F75375S HARDWARE MONITOR AND FAN CONTROLLER DRIVER
S: Supported
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/hardening
F: include/linux/fortify-string.h
F: lib/test_fortify/*
F: scripts/test_fortify.sh
F: drivers/fpga/
F: include/linux/fpga/
+INTEL MAX10 BMC SECURE UPDATES
+S: Maintained
+F: Documentation/ABI/testing/sysfs-driver-intel-m10-bmc-sec-update
+F: drivers/fpga/intel-m10-bmc-sec-update.c
+
+MICROCHIP POLARFIRE FPGA DRIVERS
+S: Supported
+F: Documentation/devicetree/bindings/fpga/microchip,mpf-spi-fpga-mgr.yaml
+F: drivers/fpga/microchip-spi.c
+
FPU EMULATOR
S: Maintained
S: Maintained
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/hardening
F: Documentation/kbuild/gcc-plugins.rst
F: scripts/Makefile.gcc-plugins
F: scripts/gcc-plugins/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy.git
F: Documentation/devicetree/bindings/phy/
F: drivers/phy/
+F: include/dt-bindings/phy/
F: include/linux/phy/
GENERIC PINCTRL I2C DEMULTIPLEXER DRIVER
F: Documentation/driver-api/gpio/
F: drivers/gpio/
F: include/asm-generic/gpio.h
+F: include/dt-bindings/gpio/
F: include/linux/gpio.h
F: include/linux/gpio/
F: include/linux/of_gpio.h
S: Maintained
F: Documentation/devicetree/bindings/media/nxp,imx8mq-vpu.yaml
+F: Documentation/devicetree/bindings/media/rockchip,rk3568-vepu.yaml
F: Documentation/devicetree/bindings/media/rockchip-vpu.yaml
F: drivers/staging/media/hantro/
K: (devm_)?hwmon_device_(un)?register(|_with_groups|_with_info)
HARDWARE RANDOM NUMBER GENERATOR CORE
-M: Matt Mackall <mpm@selenic.com>
+M: Olivia Mackall <olivia@selenic.com>
S: Odd fixes
F: Documentation/admin-guide/perf/hisi-pmu.rst
F: drivers/perf/hisilicon
-HISILICON QM AND ZIP Controller DRIVER
+HISILICON HNS3 PMU DRIVER
+S: Supported
+F: Documentation/admin-guide/perf/hns3-pmu.rst
+F: drivers/perf/hisilicon/hns3_pmu.c
+
+HISILICON QM DRIVER
S: Maintained
-F: Documentation/ABI/testing/debugfs-hisi-zip
+F: drivers/crypto/hisilicon/Kconfig
+F: drivers/crypto/hisilicon/Makefile
F: drivers/crypto/hisilicon/qm.c
F: drivers/crypto/hisilicon/sgl.c
-F: drivers/crypto/hisilicon/zip/
F: include/linux/hisi_acc_qm.h
+HISILICON ZIP Controller DRIVER
+S: Maintained
+F: Documentation/ABI/testing/debugfs-hisi-zip
+F: drivers/crypto/hisilicon/zip/
+
HISILICON ROCE DRIVER
S: Maintained
-F: Documentation/vm/hmm.rst
+F: Documentation/mm/hmm.rst
F: include/linux/hmm*
F: lib/test_hmm*
F: mm/hmm*
S: Maintained
F: Documentation/ABI/testing/sysfs-kernel-mm-hugepages
F: Documentation/admin-guide/mm/hugetlbpage.rst
-F: Documentation/vm/hugetlbfs_reserv.rst
-F: Documentation/vm/vmemmap_dedup.rst
+F: Documentation/mm/hugetlbfs_reserv.rst
+F: Documentation/mm/vmemmap_dedup.rst
F: fs/hugetlbfs/
F: include/linux/hugetlb.h
F: mm/hugetlb.c
HWPOISON MEMORY FAILURE HANDLING
S: Maintained
F: mm/hwpoison-inject.c
T: git git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git
F: Documentation/ABI/stable/sysfs-bus-vmbus
F: Documentation/ABI/testing/debugfs-hyperv
+F: Documentation/virt/hyperv
F: Documentation/networking/device_drivers/ethernet/microsoft/netvsc.rst
F: arch/arm64/hyperv
F: arch/arm64/include/asm/hyperv-tlfs.h
F: Documentation/devicetree/bindings/i2c/i2c.txt
F: Documentation/i2c/
F: drivers/i2c/*
+F: include/dt-bindings/i2c/i2c.h
F: include/linux/i2c-dev.h
F: include/linux/i2c-smbus.h
F: include/linux/i2c.h
F: Documentation/devicetree/bindings/i2c/
F: drivers/i2c/algos/
F: drivers/i2c/busses/
+F: include/dt-bindings/i2c/
I2C-TAOS-EVM DRIVER
IDMAPPED MOUNTS
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux.git
F: Documentation/devicetree/bindings/iio/
F: drivers/iio/
F: drivers/staging/iio/
+F: include/dt-bindings/iio/
F: include/linux/iio/
F: tools/iio/
S: Maintained
F: drivers/video/fbdev/i810/
+INTEL 8255 GPIO DRIVER
+S: Maintained
+F: drivers/gpio/gpio-i8255.c
+F: drivers/gpio/gpio-i8255.h
+
INTEL ASoC DRIVERS
S: Supported
F: sound/soc/intel/
Q: https://patchwork.kernel.org/project/linux-dmaengine/list/
F: drivers/dma/ioat*
-INTEL IADX DRIVER
+INTEL IDXD DRIVER
S: Supported
INTEL IOMMU (VT-d)
S: Supported
T: git git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git
F: drivers/iommu/intel/
-F: include/linux/intel-iommu.h
F: include/linux/intel-svm.h
INTEL IOP-ADMA DMA DRIVER
INTEL PMIC MULTIFUNCTION DEVICE DRIVERS
-S: Maintained
+S: Supported
F: drivers/mfd/intel_soc_pmic*
F: include/linux/mfd/intel_soc_pmic*
F: fs/iomap/
F: include/linux/iomap.h
-IOMMU DRIVERS
+IOMMU DMA-API LAYER
+S: Maintained
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git
+F: drivers/iommu/dma-iommu.c
+F: drivers/iommu/iova.c
+F: include/linux/dma-iommu.h
+F: include/linux/iova.h
+
+IOMMU SUBSYSTEM
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git
F: Documentation/devicetree/bindings/iommu/
S: Maintained
T: git git://git.kernel.dk/linux-block
T: git git://git.kernel.dk/liburing
-F: fs/io-wq.c
-F: fs/io-wq.h
-F: fs/io_uring.c
+F: io_uring/
F: include/linux/io_uring.h
F: include/uapi/linux/io_uring.h
F: tools/io_uring/
F: drivers/irqchip/
ISA
S: Maintained
F: Documentation/driver-api/isa.rst
F: drivers/base/isa.c
F: scripts/mod/
F: scripts/package/
+KERNEL HARDENING (not covered by other areas)
+S: Supported
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/hardening
+F: include/linux/overflow.h
+F: include/linux/randomize_kstack.h
+F: mm/usercopy.c
+K: \b(add|choose)_random_kstack_offset\b
+K: \b__check_(object_size|heap_object)\b
+
KERNEL JANITORS
S: Odd Fixes
S: Maintained
F: arch/riscv/include/uapi/asm/kvm*
F: arch/riscv/kvm/
F: tools/testing/selftests/kvm/*/riscv/
-F: tools/testing/selftests/kvm/riscv/
KERNEL VIRTUAL MACHINE for s390 (KVM/s390)
F: tools/testing/selftests/kvm/s390x/
KERNEL VIRTUAL MACHINE FOR X86 (KVM/x86)
S: Supported
-W: http://www.linux-kvm.org
T: git git://git.kernel.org/pub/scm/virt/kvm/kvm.git
F: arch/x86/include/asm/kvm*
-F: arch/x86/include/asm/pvclock-abi.h
F: arch/x86/include/asm/svm.h
F: arch/x86/include/asm/vmx*.h
F: arch/x86/include/uapi/asm/kvm*
F: arch/x86/include/uapi/asm/svm.h
F: arch/x86/include/uapi/asm/vmx.h
-F: arch/x86/kernel/kvm.c
-F: arch/x86/kernel/kvmclock.c
F: arch/x86/kvm/
F: arch/x86/kvm/*/
+KVM PARAVIRT (KVM/paravirt)
+S: Supported
+T: git git://git.kernel.org/pub/scm/virt/kvm/kvm.git
+F: arch/x86/kernel/kvm.c
+F: arch/x86/kernel/kvmclock.c
+F: arch/x86/include/asm/pvclock-abi.h
+F: include/linux/kvm_para.h
+F: include/uapi/linux/kvm_para.h
+F: include/uapi/asm-generic/kvm_para.h
+F: include/asm-generic/kvm_para.h
+F: arch/um/include/asm/kvm_para.h
+F: arch/x86/include/asm/kvm_para.h
+F: arch/x86/include/uapi/asm/kvm_para.h
+
+KVM X86 HYPER-V (KVM/hyper-v)
+S: Supported
+T: git git://git.kernel.org/pub/scm/virt/kvm/kvm.git
+F: arch/x86/kvm/hyperv.*
+F: arch/x86/kvm/kvm_onhyperv.*
+F: arch/x86/kvm/svm/hyperv.*
+F: arch/x86/kvm/svm/svm_onhyperv.*
+F: arch/x86/kvm/vmx/evmcs.*
+
KERNFS
F: include/net/l3mdev.h
F: net/l3mdev
-L7 BPF FRAMEWORK
-S: Maintained
-F: include/linux/skmsg.h
-F: net/core/skmsg.c
-F: net/core/sock_map.c
-F: net/ipv4/tcp_bpf.c
-F: net/ipv4/udp_bpf.c
-F: net/unix/unix_bpf.c
-
LANDLOCK SECURITY MODULE
LINUX FOR POWERPC (32-BIT AND 64-BIT)
S: Supported
W: https://github.com/linuxppc/wiki/wiki
LOADPIN SECURITY MODULE
S: Supported
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git lsm/loadpin
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/hardening
F: Documentation/admin-guide/LSM/LoadPin.rst
F: security/loadpin/
LOONGARCH
S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson.git
F: arch/loongarch/
F: Documentation/devicetree/bindings/*/maxim,max77693.yaml
F: Documentation/devicetree/bindings/*/maxim,max77843.yaml
F: Documentation/devicetree/bindings/clock/maxim,max77686.txt
-F: Documentation/devicetree/bindings/mfd/max77693.txt
F: drivers/*/*max77843.c
F: drivers/*/max14577*.c
F: drivers/*/max77686*.c
F: drivers/net/ieee802154/mcr20a.h
MEASUREMENT COMPUTING CIO-DAC IIO DRIVER
S: Maintained
F: drivers/iio/dac/cio-dac.c
F: Documentation/userspace-api/media/
F: drivers/media/
F: drivers/staging/media/
+F: include/dt-bindings/media/
F: include/linux/platform_data/media/
F: include/media/
F: include/uapi/linux/dvb/
MEDIATEK IOMMU DRIVER
S: Supported
F: Documentation/devicetree/bindings/iommu/mediatek*
MEDIATEK MEDIA DRIVER
S: Supported
F: Documentation/devicetree/bindings/media/mediatek,vcodec*.yaml
F: Documentation/devicetree/bindings/media/mediatek-vpu.txt
S: Maintained
W: http://www.linux-mm.org
-T: quilt https://ozlabs.org/~akpm/mmotm/
-T: quilt https://ozlabs.org/~akpm/mmots/
-T: git git://github.com/hnaz/linux-mm.git
+T: git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
+T: quilt git://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new
F: include/linux/gfp.h
F: include/linux/memory_hotplug.h
F: include/linux/mm.h
F: mm/
F: tools/testing/selftests/vm/
+MEMORY HOT(UN)PLUG
+S: Maintained
+F: Documentation/admin-guide/mm/memory-hotplug.rst
+F: Documentation/core-api/memory-hotplug.rst
+F: drivers/base/memory.c
+F: include/linux/memory_hotplug.h
+F: mm/memory_hotplug.c
+F: tools/testing/selftests/memory-hotplug/
+
MEMORY TECHNOLOGY DEVICES (MTD)
S: Maintained
F: Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml
+F: Documentation/devicetree/bindings/net/dsa/microchip,lan937x.yaml
F: drivers/net/dsa/microchip/*
F: include/linux/platform_data/microchip-ksz.h
F: net/dsa/tag_ksz.c
F: Documentation/devicetree/bindings/mtd/atmel-nand.txt
F: drivers/mtd/nand/raw/atmel/*
+MICROCHIP OTPC DRIVER
+S: Supported
+F: Documentation/devicetree/bindings/nvmem/microchip,sama7g5-otpc.yaml
+F: drivers/nvmem/microchip-otpc.c
+F: include/dt-bindings/nvmem/microchip,sama7g5-otpc.h
+
MICROCHIP PWM DRIVER
F: include/linux/cciss*.h
F: include/uapi/linux/cciss*.h
+MICROSOFT SURFACE AGGREGATOR TABLET-MODE SWITCH
+S: Maintained
+F: drivers/platform/surface/surface_aggregator_tabletsw.c
+
MICROSOFT SURFACE BATTERY AND AC DRIVERS
F: include/linux/surface_aggregator/
F: include/uapi/linux/surface_aggregator/
+MICROSOFT SURFACE SYSTEM AGGREGATOR HUB DRIVER
+S: Maintained
+F: drivers/platform/surface/surface_aggregator_hub.c
+
MICROTEK X6 SCANNER
S: Maintained
F: drivers/media/i2c/mt9v111.c
MULTIFUNCTION DEVICES (MFD)
-M: Lee Jones <lee.jones@linaro.org>
+M: Lee Jones <lee@kernel.org>
S: Supported
T: git git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git
F: Documentation/devicetree/bindings/mfd/
S: Maintained
F: net/sched/sch_netem.c
-NETERION 10GbE DRIVERS (s2io/vxge)
+NETERION 10GbE DRIVERS (s2io)
S: Supported
F: Documentation/networking/device_drivers/ethernet/neterion/s2io.rst
-F: Documentation/networking/device_drivers/ethernet/neterion/vxge.rst
F: drivers/net/ethernet/neterion/
NETFILTER
F: Documentation/devicetree/bindings/net/
F: drivers/connector/
F: drivers/net/
+F: include/dt-bindings/net/
F: include/linux/etherdevice.h
F: include/linux/fcdevice.h
F: include/linux/fddidevice.h
NETWORKING [TLS]
S: Maintained
W: http://git.infradead.org/nvme.git
T: git://git.infradead.org/nvme.git
F: drivers/nvme/host/
-F: include/linux/nvme.h
+F: drivers/nvme/common/
+F: include/linux/nvme*
F: include/uapi/linux/nvme_ioctl.h
NVM EXPRESS FC TRANSPORT DRIVERS
F: drivers/net/phy/nxp-c45-tja11xx.c
NXP FSPI DRIVER
S: Maintained
F: drivers/iio/gyro/fxas21002c_spi.c
NXP i.MX CLOCK DRIVERS
S: Maintained
F: sound/soc/codecs/tfa989x.c
NXP-NCI NFC DRIVER
-S: Supported
+S: Orphan
F: Documentation/devicetree/bindings/net/nfc/nxp,nci.yaml
F: drivers/nfc/nxp-nci
S: Maintained
T: git git://linuxtv.org/media_tree.git
+F: Documentation/devicetree/bindings/media/i2c/ovti,ov5693.yaml
F: drivers/media/i2c/ov5693.c
OMNIVISION OV5695 SENSOR DRIVER
T: git git://linuxtv.org/media_tree.git
F: drivers/media/i2c/ov9734.c
+ONBOARD USB HUB DRIVER
+S: Maintained
+F: Documentation/ABI/testing/sysfs-bus-platform-onboard-usb-hub
+F: drivers/usb/misc/onboard_usb_hub.c
+
ONENAND FLASH DRIVER
OPENCOMPUTE PTP CLOCK DRIVER
S: Maintained
F: drivers/ptp/ptp_ocp.c
S: Maintained
-F: Documentation/devicetree/bindings/i2c/i2c-ocores.txt
+F: Documentation/devicetree/bindings/i2c/opencores,i2c-ocores.yaml
F: Documentation/i2c/busses/i2c-ocores.rst
F: drivers/i2c/busses/i2c-ocores.c
F: include/linux/platform_data/i2c-ocores.h
S: Maintained
-F: Documentation/vm/page_table_check.rst
+F: Documentation/mm/page_table_check.rst
F: include/linux/page_table_check.h
F: mm/page_table_check.c
S: Maintained
F: drivers/pci/controller/dwc/*spear*
+PCI DRIVER FOR XILINX VERSAL CPM
+S: Maintained
+F: Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml
+F: drivers/pci/controller/pcie-xilinx-cpm.c
+
PCMCIA SUBSYSTEM
S: Odd Fixes
S: Maintained
PIN CONTROLLER - INTEL
-S: Maintained
+S: Supported
T: git git://git.kernel.org/pub/scm/linux/kernel/git/pinctrl/intel.git
F: drivers/pinctrl/intel/
F: Documentation/devicetree/bindings/iio/chemical/plantower,pms7003.yaml
F: drivers/iio/chemical/pms7003.c
-PLATFORM FEATURE INFRASTRUCTURE
-S: Maintained
-F: arch/*/include/asm/platform-feature.h
-F: include/asm-generic/platform-feature.h
-F: include/linux/platform-feature.h
-F: kernel/platform-feature.c
-
PLDMFW LIBRARY
S: Maintained
PWM SUBSYSTEM
S: Maintained
Q: https://patchwork.ozlabs.org/project/linux-pwm/list/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm.git
-F: Documentation/devicetree/bindings/gpio/gpio-mvebu.txt
+F: Documentation/devicetree/bindings/gpio/gpio-mvebu.yaml
F: Documentation/devicetree/bindings/pwm/
F: Documentation/driver-api/pwm.rst
F: drivers/gpio/gpio-mvebu.c
F: drivers/pwm/
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)
QCOM AUDIO (ASoC) DRIVERS
-M: Banajit Goswami <bgoswami@codeaurora.org>
+M: Banajit Goswami <bgoswami@quicinc.com>
S: Supported
+F: include/dt-bindings/sound/qcom,wcd9335.h
+F: sound/soc/codecs/lpass-rx-macro.*
+F: sound/soc/codecs/lpass-tx-macro.*
F: sound/soc/codecs/lpass-va-macro.c
F: sound/soc/codecs/lpass-wsa-macro.*
F: sound/soc/codecs/msm8916-wcd-analog.c
F: sound/soc/codecs/wcd9335.*
F: sound/soc/codecs/wcd934x.c
F: sound/soc/codecs/wcd-clsh-v2.*
+F: sound/soc/codecs/wcd-mbhc-v2.*
F: sound/soc/codecs/wsa881x.c
+F: sound/soc/codecs/wsa883x.c
F: sound/soc/qcom/
QCOM EMBEDDED USB DEBUGGER (EUD)
F: drivers/cpufreq/qcom-cpufreq-nvmem.c
QUALCOMM CRYPTO DRIVERS
-M: Thara Gopinath <thara.gopinath@linaro.org>
+M: Thara Gopinath <thara.gopinath@gmail.com>
S: Maintained
F: Documentation/devicetree/bindings/i2c/i2c-qcom-cci.txt
F: drivers/i2c/busses/i2c-qcom-cci.c
+QUALCOMM INTERCONNECT BWMON DRIVER
+S: Maintained
+F: Documentation/devicetree/bindings/interconnect/qcom,msm8998-bwmon.yaml
+F: drivers/soc/qcom/icc-bwmon.c
+
QUALCOMM IOMMU
S: Maintained
F: drivers/iommu/arm/arm-smmu/qcom_iommu.c
QUALCOMM TSENS THERMAL DRIVER
-M: Thara Gopinath <thara.gopinath@linaro.org>
+M: Thara Gopinath <thara.gopinath@gmail.com>
S: Maintained
F: Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml
F: drivers/iio/adc/rzg2l_adc.c
+RENESAS RZ/N1 A5PSW SWITCH DRIVER
+S: Maintained
+F: Documentation/devicetree/bindings/net/dsa/renesas,rzn1-a5psw.yaml
+F: Documentation/devicetree/bindings/net/pcs/renesas,rzn1-miic.yaml
+F: drivers/net/dsa/rzn1_a5psw*
+F: drivers/net/pcs/pcs-rzn1-miic.c
+F: include/dt-bindings/net/pcs-rzn1-miic.h
+F: include/linux/pcs-rzn1-miic.h
+F: net/dsa/tag_rzn1_a5psw.c
+
RENESAS RZ/N1 RTC CONTROLLER DRIVER
K: riscv
RISC-V/MICROCHIP POLARFIRE SOC SUPPORT
S: Supported
F: arch/riscv/boot/dts/microchip/
+F: drivers/char/hw_random/mpfs-rng.c
+F: drivers/clk/microchip/clk-mpfs.c
F: drivers/mailbox/mailbox-mpfs.c
+F: drivers/pci/controller/pcie-microchip-host.c
F: drivers/soc/microchip/
+F: drivers/spi/spi-microchip-core.c
+F: drivers/usb/musb/mpfs.c
F: include/soc/microchip/mpfs.h
RNBD BLOCK DRIVERS
S: Supported
+F: arch/s390/kvm/pci*
F: drivers/vfio/pci/vfio_pci_zdev.c
F: include/uapi/linux/vfio_zdev.h
S: Supported
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git seccomp
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/seccomp
F: Documentation/userspace-api/seccomp_filter.rst
F: include/linux/seccomp.h
F: include/uapi/linux/seccomp.h
F: Documentation/admin-guide/security-bugs.rst
SECURITY SUBSYSTEM
S: Supported
W: http://kernsec.org/
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security.git
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm.git
F: security/
X: security/selinux/
S: Maintained
+F: Documentation/devicetree/bindings/net/sff,sfp.yaml
F: drivers/net/phy/phylink.c
F: drivers/net/phy/sfp*
F: include/linux/mdio/mdio-i2c.h
SHARED MEMORY COMMUNICATIONS (SMC) SOCKETS
S: Supported
W: http://www.ibm.com/developerworks/linux/linux390/
F: include/linux/sl?b*.h
F: mm/sl?b*
+SLCAN CAN NETWORK DRIVER
+S: Maintained
+F: drivers/net/can/slcan/
+
SLEEPABLE READ-COPY UPDATE (SRCU)
S: Supported
+Q: https://patchwork.kernel.org/project/linux-raid/list/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/song/md.git
F: drivers/md/Kconfig
F: drivers/md/Makefile
SOUND - SOUND OPEN FIRMWARE (SOF) DRIVERS
S: Supported
SPI NOR SUBSYSTEM
S: Maintained
STAGING - REALTEK RTL8188EU DRIVERS
S: Supported
F: drivers/staging/r8188eu/
SWIOTLB SUBSYSTEM
S: Supported
W: http://git.infradead.org/users/hch/dma-mapping.git
T: git git://git.infradead.org/users/hch/dma-mapping.git
-S: Maintained
+S: Supported
F: drivers/i2c/busses/i2c-designware-*
SYNOPSYS DESIGNWARE MMC/SD/SDIO DRIVER
F: drivers/mmc/host/sdhci-pci-dwc-mshc.c
SYSTEM CONFIGURATION (SYSCON)
-M: Lee Jones <lee.jones@linaro.org>
+M: Lee Jones <lee@kernel.org>
S: Supported
T: git git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git
S: Maintained
-F: Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
+F: Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.yaml
F: drivers/staging/media/tegra-video/
TEGRA XUSB PADCTL DRIVER
F: Documentation/devicetree/bindings/thermal/
F: Documentation/driver-api/thermal/
F: drivers/thermal/
+F: include/dt-bindings/thermal/
F: include/linux/cpu_cooling.h
F: include/linux/thermal.h
F: include/uapi/linux/thermal.h
TRADITIONAL CHINESE DOCUMENTATION
S: Maintained
W: https://github.com/srcres258/linux-doc
T: git git://github.com/srcres258/linux-doc.git doc-zh-tw
F: Documentation/filesystems/ubifs.rst
F: fs/ubifs/
+UBLK USERSPACE BLOCK DRIVER
+S: Maintained
+F: drivers/block/ublk_drv.c
+F: include/uapi/linux/ublk_cmd.h
+
UCLINUX (M68KNOMMU AND COLDFIRE)
S: Maintained
F: drivers/ufs/host/ufs-mediatek*
+UNIVERSAL FLASH STORAGE HOST CONTROLLER DRIVER RENESAS HOOKS
+S: Maintained
+F: drivers/ufs/host/ufs-renesas.c
+
UNSORTED BLOCK IMAGES (UBI)
F: Documentation/devicetree/bindings/usb/
F: Documentation/usb/
F: drivers/usb/
+F: include/dt-bindings/usb/
F: include/linux/usb.h
F: include/linux/usb/
S: Maintained
F: Documentation/ABI/testing/sysfs-bus-vdpa
+F: Documentation/ABI/testing/sysfs-class-vduse
F: Documentation/devicetree/bindings/virtio/
F: drivers/block/virtio_blk.c
F: drivers/crypto/virtio/
-S: Maintained
+S: Odd fixes
T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
F: Documentation/driver-api/vme.rst
F: drivers/staging/vme_user/
-F: drivers/vme/
-F: include/linux/vme*
VM SOCKETS (AF_VSOCK)
S: Maintained
F: drivers/input/tablet/wacom_serial4.c
+WANGXUN ETHERNET DRIVER
+S: Maintained
+F: Documentation/networking/device_drivers/ethernet/wangxun/txgbe.rst
+F: drivers/net/ethernet/wangxun/
+
WATCHDOG DEVICE DRIVERS
F: drivers/media/rc/winbond-cir.c
WINSYSTEMS EBC-C384 WATCHDOG DRIVER
S: Maintained
F: drivers/watchdog/ebc-c384_wdt.c
WINSYSTEMS WS16C48 GPIO DRIVER
S: Maintained
F: drivers/gpio/gpio-ws16c48.c
F: include/uapi/linux/xdp_diag.h
F: include/net/netns/xdp.h
F: net/xdp/
-F: samples/bpf/xdpsock*
-F: tools/lib/bpf/xsk*
+F: tools/testing/selftests/bpf/*xsk*
XEN BLOCK SUBSYSTEM
S: Supported
F: arch/x86/xen/*swiotlb*
F: drivers/xen/*swiotlb*
YAMA SECURITY MODULE
S: Supported
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git yama/tip
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/hardening
F: Documentation/admin-guide/LSM/Yama.rst
F: security/yama/
S: Maintained
-F: Documentation/vm/zsmalloc.rst
+F: Documentation/mm/zsmalloc.rst
F: include/linux/zsmalloc.h
F: mm/zsmalloc.c
config LIVEPATCH_64
def_bool PPC64
- depends on LIVEPATCH
+ depends on LIVEPATCH
config MMU
bool
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAS_UACCESS_FLUSHCACHE
select ARCH_HAS_UBSAN_SANITIZE_ALL
- select ARCH_HAS_VM_GET_PAGE_PROT if PPC_BOOK3S_64
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_KEEP_MEMBLOCK
select ARCH_MIGHT_HAVE_PC_PARPORT
select HAVE_ARCH_JUMP_LABEL_RELATIVE
select HAVE_ARCH_KASAN if PPC32 && PPC_PAGE_SHIFT <= 14
select HAVE_ARCH_KASAN if PPC_RADIX_MMU
+ select HAVE_ARCH_KASAN if PPC_BOOK3E_64
select HAVE_ARCH_KASAN_VMALLOC if HAVE_ARCH_KASAN
select HAVE_ARCH_KFENCE if PPC_BOOK3S_32 || PPC_8xx || 40x
+ select HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET
select HAVE_ARCH_KGDB
select HAVE_ARCH_MMAP_RND_BITS
select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
select HAVE_ARCH_SECCOMP_FILTER
select HAVE_ARCH_TRACEHOOK
select HAVE_ASM_MODVERSIONS
- select HAVE_CONTEXT_TRACKING if PPC64
+ select HAVE_CONTEXT_TRACKING_USER if PPC64
select HAVE_C_RECORDMCOUNT
select HAVE_DEBUG_KMEMLEAK
select HAVE_DEBUG_STACKOVERFLOW
select IOMMU_HELPER if PPC64
select IRQ_DOMAIN
select IRQ_FORCED_THREADING
+ select KASAN_VMALLOC if KASAN && MODULES
select MMU_GATHER_PAGE_SIZE
select MMU_GATHER_RCU_TABLE_FREE
+ select MMU_GATHER_MERGE_VMAS
select MODULES_USE_ELF_RELA
select NEED_DMA_MAP_STATE if PPC64 || NOT_COHERENT_CACHE
select NEED_PER_CPU_EMBED_FIRST_CHUNK if PPC64
select SYSCTL_EXCEPTION_TRACE
select THREAD_INFO_IN_TASK
select TRACE_IRQFLAGS_SUPPORT
- select VIRT_TO_BUS if !PPC64
#
# Please keep this list sorted alphabetically.
#
+config PPC_LONG_DOUBLE_128
+ depends on PPC64
+ def_bool $(success,test "$(shell,echo __LONG_DOUBLE_128__ | $(CC) -E -P -)" = 1)
+
config PPC_BARRIER_NOSPEC
bool
default y
depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
default y
+ config PPC_PCI_BUS_NUM_DOMAIN_DEPENDENT
+ depends on PPC32
+ depends on !PPC_PMAC && !PPC_CHRP
+ bool "Assign PCI bus numbers from zero individually for each PCI domain"
+ help
+ By default on PPC32 were PCI bus numbers unique across all PCI domains.
+ So system could have only 256 PCI buses independently of available
+ PCI domains. When this option is enabled then PCI bus numbers are
+ PCI domain dependent and each PCI controller on own domain can have
+ 256 PCI buses, like it is on other Linux architectures.
+
config PPC_OF_PLATFORM_PCI
bool
depends on PCI
default MATH_EMULATION_FULL
depends on MATH_EMULATION
- config MATH_EMULATION_FULL
+ config MATH_EMULATION_FULL
bool "Emulate all the floating point instructions"
help
Select this option will enable the kernel to support to emulate
bool "kexec file based system call"
select KEXEC_CORE
select HAVE_IMA_KEXEC if IMA
- select BUILD_BIN2C
select KEXEC_ELF
depends on PPC64
depends on CRYPTO=y
default "0x00000000"
endif
-config ARCH_RANDOM
- def_bool n
-
config PPC_LIB_RHEAP
bool
#ifndef _ASM_POWERPC_ARCHRANDOM_H
#define _ASM_POWERPC_ARCHRANDOM_H
-#ifdef CONFIG_ARCH_RANDOM
-
#include <asm/machdep.h>
-static inline bool __must_check arch_get_random_long(unsigned long *v)
-{
- return false;
-}
-
-static inline bool __must_check arch_get_random_int(unsigned int *v)
-{
- return false;
-}
-
-static inline bool __must_check arch_get_random_seed_long(unsigned long *v)
+static inline size_t __must_check arch_get_random_longs(unsigned long *v, size_t max_longs)
{
- if (ppc_md.get_random_seed)
- return ppc_md.get_random_seed(v);
-
- return false;
+ return 0;
}
-static inline bool __must_check arch_get_random_seed_int(unsigned int *v)
+static inline size_t __must_check arch_get_random_seed_longs(unsigned long *v, size_t max_longs)
{
- unsigned long val;
- bool rc;
-
- rc = arch_get_random_seed_long(&val);
- if (rc)
- *v = val;
-
- return rc;
+ if (max_longs && ppc_md.get_random_seed && ppc_md.get_random_seed(v))
+ return 1;
+ return 0;
}
-#endif /* CONFIG_ARCH_RANDOM */
#ifdef CONFIG_PPC_POWERNV
- int powernv_hwrng_present(void);
- int powernv_get_random_long(unsigned long *v);
- int powernv_get_random_real_mode(unsigned long *v);
- #else
- static inline int powernv_hwrng_present(void) { return 0; }
- static inline int powernv_get_random_real_mode(unsigned long *v) { return 0; }
+ int pnv_get_random_long(unsigned long *v);
#endif
#endif /* _ASM_POWERPC_ARCHRANDOM_H */
#include <asm/delay.h>
#include <asm/mmiowb.h>
#include <asm/mmu.h>
- #include <asm/ppc_asm.h>
#define SIO_CONFIG_RA 0x398
#define SIO_CONFIG_RD 0x399
}
#define bus_to_virt bus_to_virt
-#define page_to_bus(page) (page_to_phys(page) + PCI_DRAM_OFFSET)
-
#endif /* CONFIG_PPC32 */
/* access ports */
extern int crash_shutdown_register(crash_shutdown_t handler);
extern int crash_shutdown_unregister(crash_shutdown_t handler);
+ extern void crash_kexec_prepare(void);
extern void crash_kexec_secondary(struct pt_regs *regs);
int __init overlaps_crashkernel(unsigned long start, unsigned long size);
extern void reserve_crashkernel(void);
void kexec_copy_flush(struct kimage *image);
+#if defined(CONFIG_CRASH_DUMP) && defined(CONFIG_PPC_RTAS)
+void crash_free_reserved_phys_range(unsigned long begin, unsigned long end);
+#define crash_free_reserved_phys_range crash_free_reserved_phys_range
+#endif
+
#ifdef CONFIG_KEXEC_FILE
extern const struct kexec_file_ops kexec_elf64_ops;
#ifdef CONFIG_PPC64
struct kexec_buf;
+int arch_kexec_kernel_image_probe(struct kimage *image, void *buf, unsigned long buf_len);
+#define arch_kexec_kernel_image_probe arch_kexec_kernel_image_probe
+
+int arch_kimage_file_post_load_cleanup(struct kimage *image);
+#define arch_kimage_file_post_load_cleanup arch_kimage_file_post_load_cleanup
+
+int arch_kexec_locate_mem_hole(struct kexec_buf *kbuf);
+#define arch_kexec_locate_mem_hole arch_kexec_locate_mem_hole
+
int load_crashdump_segments_ppc64(struct kimage *image,
struct kexec_buf *kbuf);
int setup_purgatory_ppc64(struct kimage *image, const void *slave_code,
#include <linux/dma-mapping.h>
#include <linux/export.h>
- #include <asm/setup.h>
-
struct pt_regs;
struct pci_bus;
struct device_node;
ssize_t (*cpu_release)(const char *, size_t);
#endif
-#ifdef CONFIG_ARCH_RANDOM
int (*get_random_seed)(unsigned long *v);
-#endif
};
extern void e500_idle(void);
#include <asm/machdep.h>
#include <asm/io.h>
- #include <asm/prom.h>
#include <asm/pci-bridge.h>
/* Return values for pci_controller_ops.probe_mode function */
#define pcibios_assign_all_busses() \
(pci_has_flag(PCI_REASSIGN_ALL_BUS))
-#define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
{
if (ppc_md.pci_get_legacy_ide_irq)
#ifndef _ARCH_POWERPC_UACCESS_H
#define _ARCH_POWERPC_UACCESS_H
- #include <asm/ppc_asm.h>
#include <asm/processor.h>
#include <asm/page.h>
#include <asm/extable.h>
static inline unsigned long __must_check
copy_mc_to_user(void __user *to, const void *from, unsigned long n)
{
- if (likely(check_copy_size(from, n, true))) {
+ if (check_copy_size(from, n, true)) {
if (access_ok(to, n)) {
allow_write_to_user(to, n);
n = copy_mc_generic((void *)to, from, n);
#include <asm/smp.h>
#include <asm/hw_irq.h>
#include <asm/softirq_stack.h>
+ #include <asm/ppc_asm.h>
- #ifdef CONFIG_PPC64
- #include <asm/paca.h>
- #include <asm/firmware.h>
- #include <asm/lv1call.h>
- #include <asm/dbell.h>
- #endif
#define CREATE_TRACE_POINTS
#include <asm/trace.h>
#include <asm/cpu_has_feature.h>
#endif
#endif /* CONFIG_PPC32 */
- #ifdef CONFIG_PPC64
-
- int distribute_irqs = 1;
-
- static inline notrace unsigned long get_irq_happened(void)
- {
- unsigned long happened;
-
- __asm__ __volatile__("lbz %0,%1(13)"
- : "=r" (happened) : "i" (offsetof(struct paca_struct, irq_happened)));
-
- return happened;
- }
-
- void replay_soft_interrupts(void)
- {
- struct pt_regs regs;
-
- /*
- * Be careful here, calling these interrupt handlers can cause
- * softirqs to be raised, which they may run when calling irq_exit,
- * which will cause local_irq_enable() to be run, which can then
- * recurse into this function. Don't keep any state across
- * interrupt handler calls which may change underneath us.
- *
- * We use local_paca rather than get_paca() to avoid all the
- * debug_smp_processor_id() business in this low level function.
- */
-
- ppc_save_regs(®s);
- regs.softe = IRQS_ENABLED;
- regs.msr |= MSR_EE;
-
- again:
- if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG))
- WARN_ON_ONCE(mfmsr() & MSR_EE);
-
- /*
- * Force the delivery of pending soft-disabled interrupts on PS3.
- * Any HV call will have this side effect.
- */
- if (firmware_has_feature(FW_FEATURE_PS3_LV1)) {
- u64 tmp, tmp2;
- lv1_get_version_info(&tmp, &tmp2);
- }
-
- /*
- * Check if an hypervisor Maintenance interrupt happened.
- * This is a higher priority interrupt than the others, so
- * replay it first.
- */
- if (IS_ENABLED(CONFIG_PPC_BOOK3S) && (local_paca->irq_happened & PACA_IRQ_HMI)) {
- local_paca->irq_happened &= ~PACA_IRQ_HMI;
- regs.trap = INTERRUPT_HMI;
- handle_hmi_exception(®s);
- if (!(local_paca->irq_happened & PACA_IRQ_HARD_DIS))
- hard_irq_disable();
- }
-
- if (local_paca->irq_happened & PACA_IRQ_DEC) {
- local_paca->irq_happened &= ~PACA_IRQ_DEC;
- regs.trap = INTERRUPT_DECREMENTER;
- timer_interrupt(®s);
- if (!(local_paca->irq_happened & PACA_IRQ_HARD_DIS))
- hard_irq_disable();
- }
-
- if (local_paca->irq_happened & PACA_IRQ_EE) {
- local_paca->irq_happened &= ~PACA_IRQ_EE;
- regs.trap = INTERRUPT_EXTERNAL;
- do_IRQ(®s);
- if (!(local_paca->irq_happened & PACA_IRQ_HARD_DIS))
- hard_irq_disable();
- }
-
- if (IS_ENABLED(CONFIG_PPC_DOORBELL) && (local_paca->irq_happened & PACA_IRQ_DBELL)) {
- local_paca->irq_happened &= ~PACA_IRQ_DBELL;
- regs.trap = INTERRUPT_DOORBELL;
- doorbell_exception(®s);
- if (!(local_paca->irq_happened & PACA_IRQ_HARD_DIS))
- hard_irq_disable();
- }
-
- /* Book3E does not support soft-masking PMI interrupts */
- if (IS_ENABLED(CONFIG_PPC_BOOK3S) && (local_paca->irq_happened & PACA_IRQ_PMI)) {
- local_paca->irq_happened &= ~PACA_IRQ_PMI;
- regs.trap = INTERRUPT_PERFMON;
- performance_monitor_exception(®s);
- if (!(local_paca->irq_happened & PACA_IRQ_HARD_DIS))
- hard_irq_disable();
- }
-
- if (local_paca->irq_happened & ~PACA_IRQ_HARD_DIS) {
- /*
- * We are responding to the next interrupt, so interrupt-off
- * latencies should be reset here.
- */
- trace_hardirqs_on();
- trace_hardirqs_off();
- goto again;
- }
- }
-
- #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_PPC_KUAP)
- static inline void replay_soft_interrupts_irqrestore(void)
- {
- unsigned long kuap_state = get_kuap();
-
- /*
- * Check if anything calls local_irq_enable/restore() when KUAP is
- * disabled (user access enabled). We handle that case here by saving
- * and re-locking AMR but we shouldn't get here in the first place,
- * hence the warning.
- */
- kuap_assert_locked();
-
- if (kuap_state != AMR_KUAP_BLOCKED)
- set_kuap(AMR_KUAP_BLOCKED);
-
- replay_soft_interrupts();
-
- if (kuap_state != AMR_KUAP_BLOCKED)
- set_kuap(kuap_state);
- }
- #else
- #define replay_soft_interrupts_irqrestore() replay_soft_interrupts()
- #endif
-
- notrace void arch_local_irq_restore(unsigned long mask)
- {
- unsigned char irq_happened;
-
- /* Write the new soft-enabled value if it is a disable */
- if (mask) {
- irq_soft_mask_set(mask);
- return;
- }
-
- if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG))
- WARN_ON_ONCE(in_nmi() || in_hardirq());
-
- /*
- * After the stb, interrupts are unmasked and there are no interrupts
- * pending replay. The restart sequence makes this atomic with
- * respect to soft-masked interrupts. If this was just a simple code
- * sequence, a soft-masked interrupt could become pending right after
- * the comparison and before the stb.
- *
- * This allows interrupts to be unmasked without hard disabling, and
- * also without new hard interrupts coming in ahead of pending ones.
- */
- asm_volatile_goto(
- "1: \n"
- " lbz 9,%0(13) \n"
- " cmpwi 9,0 \n"
- " bne %l[happened] \n"
- " stb 9,%1(13) \n"
- "2: \n"
- RESTART_TABLE(1b, 2b, 1b)
- : : "i" (offsetof(struct paca_struct, irq_happened)),
- "i" (offsetof(struct paca_struct, irq_soft_mask))
- : "cr0", "r9"
- : happened);
-
- if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG))
- WARN_ON_ONCE(!(mfmsr() & MSR_EE));
-
- return;
-
- happened:
- irq_happened = get_irq_happened();
- if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG))
- WARN_ON_ONCE(!irq_happened);
-
- if (irq_happened == PACA_IRQ_HARD_DIS) {
- if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG))
- WARN_ON_ONCE(mfmsr() & MSR_EE);
- irq_soft_mask_set(IRQS_ENABLED);
- local_paca->irq_happened = 0;
- __hard_irq_enable();
- return;
- }
-
- /* Have interrupts to replay, need to hard disable first */
- if (!(irq_happened & PACA_IRQ_HARD_DIS)) {
- if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG)) {
- if (!(mfmsr() & MSR_EE)) {
- /*
- * An interrupt could have come in and cleared
- * MSR[EE] and set IRQ_HARD_DIS, so check
- * IRQ_HARD_DIS again and warn if it is still
- * clear.
- */
- irq_happened = get_irq_happened();
- WARN_ON_ONCE(!(irq_happened & PACA_IRQ_HARD_DIS));
- }
- }
- __hard_irq_disable();
- local_paca->irq_happened |= PACA_IRQ_HARD_DIS;
- } else {
- if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG)) {
- if (WARN_ON_ONCE(mfmsr() & MSR_EE))
- __hard_irq_disable();
- }
- }
-
- /*
- * Disable preempt here, so that the below preempt_enable will
- * perform resched if required (a replayed interrupt may set
- * need_resched).
- */
- preempt_disable();
- irq_soft_mask_set(IRQS_ALL_DISABLED);
- trace_hardirqs_off();
-
- replay_soft_interrupts_irqrestore();
- local_paca->irq_happened = 0;
-
- trace_hardirqs_on();
- irq_soft_mask_set(IRQS_ENABLED);
- __hard_irq_enable();
- preempt_enable();
- }
- EXPORT_SYMBOL(arch_local_irq_restore);
-
- /*
- * This is a helper to use when about to go into idle low-power
- * when the latter has the side effect of re-enabling interrupts
- * (such as calling H_CEDE under pHyp).
- *
- * You call this function with interrupts soft-disabled (this is
- * already the case when ppc_md.power_save is called). The function
- * will return whether to enter power save or just return.
- *
- * In the former case, it will have notified lockdep of interrupts
- * being re-enabled and generally sanitized the lazy irq state,
- * and in the latter case it will leave with interrupts hard
- * disabled and marked as such, so the local_irq_enable() call
- * in arch_cpu_idle() will properly re-enable everything.
- */
- bool prep_irq_for_idle(void)
- {
- /*
- * First we need to hard disable to ensure no interrupt
- * occurs before we effectively enter the low power state
- */
- __hard_irq_disable();
- local_paca->irq_happened |= PACA_IRQ_HARD_DIS;
-
- /*
- * If anything happened while we were soft-disabled,
- * we return now and do not enter the low power state.
- */
- if (lazy_irq_pending())
- return false;
-
- /* Tell lockdep we are about to re-enable */
- trace_hardirqs_on();
-
- /*
- * Mark interrupts as soft-enabled and clear the
- * PACA_IRQ_HARD_DIS from the pending mask since we
- * are about to hard enable as well as a side effect
- * of entering the low power state.
- */
- local_paca->irq_happened &= ~PACA_IRQ_HARD_DIS;
- irq_soft_mask_set(IRQS_ENABLED);
-
- /* Tell the caller to enter the low power state */
- return true;
- }
-
- #ifdef CONFIG_PPC_BOOK3S
- /*
- * This is for idle sequences that return with IRQs off, but the
- * idle state itself wakes on interrupt. Tell the irq tracer that
- * IRQs are enabled for the duration of idle so it does not get long
- * off times. Must be paired with fini_irq_for_idle_irqsoff.
- */
- bool prep_irq_for_idle_irqsoff(void)
- {
- WARN_ON(!irqs_disabled());
-
- /*
- * First we need to hard disable to ensure no interrupt
- * occurs before we effectively enter the low power state
- */
- __hard_irq_disable();
- local_paca->irq_happened |= PACA_IRQ_HARD_DIS;
-
- /*
- * If anything happened while we were soft-disabled,
- * we return now and do not enter the low power state.
- */
- if (lazy_irq_pending())
- return false;
-
- /* Tell lockdep we are about to re-enable */
- trace_hardirqs_on();
-
- return true;
- }
-
- /*
- * Take the SRR1 wakeup reason, index into this table to find the
- * appropriate irq_happened bit.
- *
- * Sytem reset exceptions taken in idle state also come through here,
- * but they are NMI interrupts so do not need to wait for IRQs to be
- * restored, and should be taken as early as practical. These are marked
- * with 0xff in the table. The Power ISA specifies 0100b as the system
- * reset interrupt reason.
- */
- #define IRQ_SYSTEM_RESET 0xff
-
- static const u8 srr1_to_lazyirq[0x10] = {
- 0, 0, 0,
- PACA_IRQ_DBELL,
- IRQ_SYSTEM_RESET,
- PACA_IRQ_DBELL,
- PACA_IRQ_DEC,
- 0,
- PACA_IRQ_EE,
- PACA_IRQ_EE,
- PACA_IRQ_HMI,
- 0, 0, 0, 0, 0 };
-
- void replay_system_reset(void)
- {
- struct pt_regs regs;
-
- ppc_save_regs(®s);
- regs.trap = 0x100;
- get_paca()->in_nmi = 1;
- system_reset_exception(®s);
- get_paca()->in_nmi = 0;
- }
- EXPORT_SYMBOL_GPL(replay_system_reset);
-
- void irq_set_pending_from_srr1(unsigned long srr1)
- {
- unsigned int idx = (srr1 & SRR1_WAKEMASK_P8) >> 18;
- u8 reason = srr1_to_lazyirq[idx];
-
- /*
- * Take the system reset now, which is immediately after registers
- * are restored from idle. It's an NMI, so interrupts need not be
- * re-enabled before it is taken.
- */
- if (unlikely(reason == IRQ_SYSTEM_RESET)) {
- replay_system_reset();
- return;
- }
-
- if (reason == PACA_IRQ_DBELL) {
- /*
- * When doorbell triggers a system reset wakeup, the message
- * is not cleared, so if the doorbell interrupt is replayed
- * and the IPI handled, the doorbell interrupt would still
- * fire when EE is enabled.
- *
- * To avoid taking the superfluous doorbell interrupt,
- * execute a msgclr here before the interrupt is replayed.
- */
- ppc_msgclr(PPC_DBELL_MSGTYPE);
- }
-
- /*
- * The 0 index (SRR1[42:45]=b0000) must always evaluate to 0,
- * so this can be called unconditionally with the SRR1 wake
- * reason as returned by the idle code, which uses 0 to mean no
- * interrupt.
- *
- * If a future CPU was to designate this as an interrupt reason,
- * then a new index for no interrupt must be assigned.
- */
- local_paca->irq_happened |= reason;
- }
- #endif /* CONFIG_PPC_BOOK3S */
-
- /*
- * Force a replay of the external interrupt handler on this CPU.
- */
- void force_external_irq_replay(void)
- {
- /*
- * This must only be called with interrupts soft-disabled,
- * the replay will happen when re-enabling.
- */
- WARN_ON(!arch_irqs_disabled());
-
- /*
- * Interrupts must always be hard disabled before irq_happened is
- * modified (to prevent lost update in case of interrupt between
- * load and store).
- */
- __hard_irq_disable();
- local_paca->irq_happened |= PACA_IRQ_HARD_DIS;
-
- /* Indicate in the PACA that we have an interrupt to replay */
- local_paca->irq_happened |= PACA_IRQ_EE;
- }
-
- #endif /* CONFIG_PPC64 */
-
int arch_show_interrupts(struct seq_file *p, int prec)
{
int j;
return sum;
}
- static inline void check_stack_overflow(void)
+ static inline void check_stack_overflow(unsigned long sp)
{
- long sp;
-
if (!IS_ENABLED(CONFIG_DEBUG_STACKOVERFLOW))
return;
- sp = current_stack_pointer & (THREAD_SIZE - 1);
+ sp &= THREAD_SIZE - 1;
- /* check for stack overflow: is there less than 2KB free? */
- if (unlikely(sp < 2048)) {
+ /* check for stack overflow: is there less than 1/4th free? */
+ if (unlikely(sp < THREAD_SIZE / 4)) {
pr_err("do_IRQ: stack overflow: %ld\n", sp);
dump_stack();
}
}
+#ifndef CONFIG_PREEMPT_RT
static __always_inline void call_do_softirq(const void *sp)
{
/* Temporarily switch r1 to sp, call __do_softirq() then restore r1. */
"r11", "r12"
);
}
+#endif
- static __always_inline void call_do_irq(struct pt_regs *regs, void *sp)
- {
- register unsigned long r3 asm("r3") = (unsigned long)regs;
-
- /* Temporarily switch r1 to sp, call __do_irq() then restore r1. */
- asm volatile (
- PPC_STLU " %%r1, %[offset](%[sp]) ;"
- "mr %%r1, %[sp] ;"
- "bl %[callee] ;"
- PPC_LL " %%r1, 0(%%r1) ;"
- : // Outputs
- "+r" (r3)
- : // Inputs
- [sp] "b" (sp), [offset] "i" (THREAD_SIZE - STACK_FRAME_OVERHEAD),
- [callee] "i" (__do_irq)
- : // Clobbers
- "lr", "xer", "ctr", "memory", "cr0", "cr1", "cr5", "cr6",
- "cr7", "r0", "r4", "r5", "r6", "r7", "r8", "r9", "r10",
- "r11", "r12"
- );
- }
-
DEFINE_STATIC_CALL_RET0(ppc_get_irq, *ppc_md.get_irq);
- void __do_irq(struct pt_regs *regs)
+ static void __do_irq(struct pt_regs *regs, unsigned long oldsp)
{
unsigned int irq;
trace_irq_entry(regs);
+ check_stack_overflow(oldsp);
+
/*
* Query the platform PIC for the interrupt & ack it.
*
trace_irq_exit(regs);
}
+ static __always_inline void call_do_irq(struct pt_regs *regs, void *sp)
+ {
+ register unsigned long r3 asm("r3") = (unsigned long)regs;
+
+ /* Temporarily switch r1 to sp, call __do_irq() then restore r1. */
+ asm volatile (
+ PPC_STLU " %%r1, %[offset](%[sp]) ;"
+ "mr %%r4, %%r1 ;"
+ "mr %%r1, %[sp] ;"
+ "bl %[callee] ;"
+ PPC_LL " %%r1, 0(%%r1) ;"
+ : // Outputs
+ "+r" (r3)
+ : // Inputs
+ [sp] "b" (sp), [offset] "i" (THREAD_SIZE - STACK_FRAME_OVERHEAD),
+ [callee] "i" (__do_irq)
+ : // Clobbers
+ "lr", "xer", "ctr", "memory", "cr0", "cr1", "cr5", "cr6",
+ "cr7", "r0", "r4", "r5", "r6", "r7", "r8", "r9", "r10",
+ "r11", "r12"
+ );
+ }
+
void __do_IRQ(struct pt_regs *regs)
{
struct pt_regs *old_regs = set_irq_regs(regs);
irqsp = hardirq_ctx[raw_smp_processor_id()];
sirqsp = softirq_ctx[raw_smp_processor_id()];
- check_stack_overflow();
-
- /* Already there ? */
- if (unlikely(cursp == irqsp || cursp == sirqsp)) {
- __do_irq(regs);
- set_irq_regs(old_regs);
- return;
- }
- /* Switch stack and call */
- call_do_irq(regs, irqsp);
+ /* Already there ? If not switch stack and call */
+ if (unlikely(cursp == irqsp || cursp == sirqsp))
+ __do_irq(regs, current_stack_pointer);
+ else
+ call_do_irq(regs, irqsp);
set_irq_regs(old_regs);
}
void *softirq_ctx[NR_CPUS] __read_mostly;
void *hardirq_ctx[NR_CPUS] __read_mostly;
+#ifndef CONFIG_PREEMPT_RT
void do_softirq_own_stack(void)
{
call_do_softirq(softirq_ctx[smp_processor_id()]);
}
+#endif
irq_hw_number_t virq_to_hw(unsigned int virq)
{
return hard_smp_processor_id();
}
#endif
-
- #ifdef CONFIG_PPC64
- static int __init setup_noirqdistrib(char *str)
- {
- distribute_irqs = 0;
- return 1;
- }
-
- __setup("noirqdistrib", setup_noirqdistrib);
- #endif /* CONFIG_PPC64 */
break;
#endif
case H_RANDOM:
- if (!arch_get_random_seed_long(&vcpu->arch.regs.gpr[4]))
+ if (!arch_get_random_seed_longs(&vcpu->arch.regs.gpr[4], 1))
ret = H_HARDWARE;
break;
case H_RPT_INVALIDATE:
const char *name;
size_t offset;
} timings[] = {
+ #ifdef CONFIG_KVM_BOOK3S_HV_P9_TIMING
+ {"vcpu_entry", offsetof(struct kvm_vcpu, arch.vcpu_entry)},
+ {"guest_entry", offsetof(struct kvm_vcpu, arch.guest_entry)},
+ {"in_guest", offsetof(struct kvm_vcpu, arch.in_guest)},
+ {"guest_exit", offsetof(struct kvm_vcpu, arch.guest_exit)},
+ {"vcpu_exit", offsetof(struct kvm_vcpu, arch.vcpu_exit)},
+ {"hypercall", offsetof(struct kvm_vcpu, arch.hcall)},
+ {"page_fault", offsetof(struct kvm_vcpu, arch.pg_fault)},
+ #else
{"rm_entry", offsetof(struct kvm_vcpu, arch.rm_entry)},
{"rm_intr", offsetof(struct kvm_vcpu, arch.rm_intr)},
{"rm_exit", offsetof(struct kvm_vcpu, arch.rm_exit)},
{"guest", offsetof(struct kvm_vcpu, arch.guest_time)},
{"cede", offsetof(struct kvm_vcpu, arch.cede_time)},
+ #endif
};
#define N_TIMINGS (ARRAY_SIZE(timings))
/* Create a debugfs directory for the vcpu */
static int kvmppc_arch_create_vcpu_debugfs_hv(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry)
{
- debugfs_create_file("timings", 0444, debugfs_dentry, vcpu,
- &debugfs_timings_ops);
+ if (cpu_has_feature(CPU_FTR_ARCH_300) == IS_ENABLED(CONFIG_KVM_BOOK3S_HV_P9_TIMING))
+ debugfs_create_file("timings", 0444, debugfs_dentry, vcpu,
+ &debugfs_timings_ops);
return 0;
}
mtspr(SPRN_DAR, vcpu->arch.shregs.dar);
mtspr(SPRN_DSISR, vcpu->arch.shregs.dsisr);
switch_pmu_to_guest(vcpu, &host_os_sprs);
+ accumulate_time(vcpu, &vcpu->arch.in_guest);
trap = plpar_hcall_norets(H_ENTER_NESTED, __pa(&hvregs),
__pa(&vcpu->arch.regs));
+ accumulate_time(vcpu, &vcpu->arch.guest_exit);
kvmhv_restore_hv_return_state(vcpu, &hvregs);
switch_pmu_to_host(vcpu, &host_os_sprs);
vcpu->arch.shregs.msr = vcpu->arch.regs.msr;
struct kvm *kvm;
unsigned long msr;
+ start_timing(vcpu, &vcpu->arch.vcpu_entry);
+
if (!vcpu->arch.sane) {
run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
return -EINVAL;
vcpu->arch.state = KVMPPC_VCPU_BUSY_IN_HOST;
do {
+ accumulate_time(vcpu, &vcpu->arch.guest_entry);
if (cpu_has_feature(CPU_FTR_ARCH_300))
r = kvmhv_run_single_vcpu(vcpu, ~(u64)0,
vcpu->arch.vcore->lpcr);
r = kvmppc_run_vcpu(vcpu);
if (run->exit_reason == KVM_EXIT_PAPR_HCALL) {
+ accumulate_time(vcpu, &vcpu->arch.hcall);
+
if (WARN_ON_ONCE(vcpu->arch.shregs.msr & MSR_PR)) {
/*
* These should have been caught reflected
trace_kvm_hcall_exit(vcpu, r);
kvmppc_core_prepare_to_enter(vcpu);
} else if (r == RESUME_PAGE_FAULT) {
+ accumulate_time(vcpu, &vcpu->arch.pg_fault);
srcu_idx = srcu_read_lock(&kvm->srcu);
r = kvmppc_book3s_hv_page_fault(vcpu,
vcpu->arch.fault_dar, vcpu->arch.fault_dsisr);
r = kvmppc_xics_rm_complete(vcpu, 0);
}
} while (is_kvmppc_resume_guest(r));
+ accumulate_time(vcpu, &vcpu->arch.vcpu_exit);
vcpu->arch.state = KVMPPC_VCPU_NOTREADY;
atomic_dec(&kvm->arch.vcpus_running);
srr_regs_clobbered();
+ end_timing(vcpu);
+
return r;
}
else
kvmppc_xics_clr_mapped(kvm, guest_gsi, pimap->mapped[i].r_hwirq);
- /* invalidate the entry (what do do on error from the above ?) */
+ /* invalidate the entry (what to do on error from the above ?) */
pimap->mapped[i].r_hwirq = 0;
/*
select EPAPR_BOOT
select PPC_INDIRECT_PIO
select PPC_UDBG_16550
- select ARCH_RANDOM
select CPU_FREQ
select PPC_DOORBELL
select MMU_NOTIFIER
default y
config OPAL_PRD
- tristate 'OPAL PRD driver'
+ tristate "OPAL PRD driver"
depends on PPC_POWERNV
help
This enables the opal-prd driver, a facility to run processor
select PPC_UDBG_16550
select PPC_DOORBELL
select HOTPLUG_CPU
- select ARCH_RANDOM
select FORCE_SMP
select SWIOTLB
default y
help
Bus device driver for GX bus based adapters.
+ config PSERIES_PLPKS
+ depends on PPC_PSERIES
+ bool "Support for the Platform Key Storage"
+ help
+ PowerVM provides an isolated Platform Keystore(PKS) storage
+ allocation for each LPAR with individually managed access
+ controls to store sensitive information securely. It can be
+ used to store asymmetric public keys or secrets as required
+ by different usecases. Select this config to enable
+ operating system interface to hypervisor to access this space.
+
+ If unsure, select N.
+
config PAPR_SCM
depends on PPC_PSERIES && MEMORY_HOTPLUG && LIBNVDIMM
tristate "Support for the PAPR Storage Class Memory interface"
tristate "Siemens Simatic IPC Watchdog"
depends on SIEMENS_SIMATIC_IPC
select WATCHDOG_CORE
+ select P2SB
help
This driver adds support for several watchdogs found in Industrial
PCs from Siemens.
# PPC64 Architecture
+ config PSERIES_WDT
+ tristate "POWER Architecture Platform Watchdog Timer"
+ depends on PPC_PSERIES
+ select WATCHDOG_CORE
+ help
+ Driver for virtual watchdog timers provided by PAPR
+ hypervisors (e.g. PowerVM, KVM).
+
config WATCHDOG_RTAS
tristate "RTAS watchdog"
depends on PPC_RTAS
/* Start period for the next softlockup warning. */
update_report_ts();
- printk_prefer_direct_enter();
-
pr_emerg("BUG: soft lockup - CPU#%d stuck for %us! [%s:%d]\n",
smp_processor_id(), duration,
current->comm, task_pid_nr(current));
add_taint(TAINT_SOFTLOCKUP, LOCKDEP_STILL_OK);
if (softlockup_panic)
panic("softlockup: hung tasks");
-
- printk_prefer_direct_exit();
}
return HRTIMER_RESTART;
return 0;
}
- static void lockup_detector_reconfigure(void)
+ static void __lockup_detector_reconfigure(void)
{
cpus_read_lock();
watchdog_nmi_stop();
__lockup_detector_cleanup();
}
+ void lockup_detector_reconfigure(void)
+ {
+ mutex_lock(&watchdog_mutex);
+ __lockup_detector_reconfigure();
+ mutex_unlock(&watchdog_mutex);
+ }
+
/*
* Create the watchdog infrastructure and configure the detector(s).
*/
return;
mutex_lock(&watchdog_mutex);
- lockup_detector_reconfigure();
+ __lockup_detector_reconfigure();
softlockup_initialized = true;
mutex_unlock(&watchdog_mutex);
}
#else /* CONFIG_SOFTLOCKUP_DETECTOR */
- static void lockup_detector_reconfigure(void)
+ static void __lockup_detector_reconfigure(void)
{
cpus_read_lock();
watchdog_nmi_stop();
watchdog_nmi_start();
cpus_read_unlock();
}
+ void lockup_detector_reconfigure(void)
+ {
+ __lockup_detector_reconfigure();
+ }
static inline void lockup_detector_setup(void)
{
- lockup_detector_reconfigure();
+ __lockup_detector_reconfigure();
}
#endif /* !CONFIG_SOFTLOCKUP_DETECTOR */
{
/* Remove impossible cpus to keep sysctl output clean. */
cpumask_and(&watchdog_cpumask, &watchdog_cpumask, cpu_possible_mask);
- lockup_detector_reconfigure();
+ __lockup_detector_reconfigure();
}
/*
# yard. Stale files stay in this file for a while (for some release cycles?),
# then will be really dead and removed from the code base entirely.
+ rm -f arch/powerpc/purgatory/kexec-purgatory.c
+
# These were previously generated source files. When you are building the kernel
# with O=, make sure to remove the stale files in the output tree. Otherwise,
# the build system wrongly compiles the stale ones.
fi
rm -f scripts/extract-cert
+
+rm -f arch/x86/purgatory/kexec-purgatory.c
projects / linux.git / commitdiff