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/Linux-v6.1/Documentation/admin-guide/
Dkernel-parameters.rst3 The kernel's command-line parameters
12 The kernel parses parameters from the kernel command line up to "``--``";
16 Everything after "``--``" is passed as an argument to init.
32 log_buf_len=1M print-fatal-signals=1
36 log-buf-len=1M print_fatal_signals=1
38 Double-quotes can be used to protect spaces in values, e.g.::
43 ----------
52 <cpu number>-<cpu number>
57 <cpu number>,...,<cpu number>-<cpu number>
63 <cpu number>-<cpu number>:<used size>/<group size>
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Ddynamic-debug-howto.rst9 debug-print code to obtain additional kernel information.
22 - source filename
23 - function name
24 - line number (including ranges of line numbers)
25 - module name
26 - format string
27 - class name (as known/declared by each module)
34 :#> head -n7 /proc/dynamic_debug/control
43 The 3rd space-delimited column shows the current flags, preceded by
44 a ``=`` for easy use with grep/cut. ``=p`` shows enabled callsites.
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Dkernel-parameters.txt5 force -- enable ACPI if default was off
6 on -- enable ACPI but allow fallback to DT [arm64]
7 off -- disable ACPI if default was on
8 noirq -- do not use ACPI for IRQ routing
9 strict -- Be less tolerant of platforms that are not
11 rsdt -- prefer RSDT over (default) XSDT
12 copy_dsdt -- copy DSDT to memory
26 If set to vendor, prefer vendor-specific driver
50 CONFIG_ACPI_DEBUG must be enabled to produce any ACPI
58 Documentation/firmware-guide/acpi/debug.rst for more information about
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/Linux-v6.1/arch/powerpc/kernel/
Dsecure_boot.c1 // SPDX-License-Identifier: GPL-2.0
14 { .compatible = "ibm,secureboot-v1", }, in get_ppc_fw_sb_node()
15 { .compatible = "ibm,secureboot-v2", }, in get_ppc_fw_sb_node()
25 bool enabled = false; in is_ppc_secureboot_enabled() local
29 enabled = of_property_read_bool(node, "os-secureboot-enforcing"); in is_ppc_secureboot_enabled()
32 if (enabled) in is_ppc_secureboot_enabled()
35 if (!of_property_read_u32(of_root, "ibm,secure-boot", &secureboot)) in is_ppc_secureboot_enabled()
36 enabled = (secureboot > 1); in is_ppc_secureboot_enabled()
39 pr_info("Secure boot mode %s\n", enabled ? "enabled" : "disabled"); in is_ppc_secureboot_enabled()
41 return enabled; in is_ppc_secureboot_enabled()
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Dima_arch.c1 // SPDX-License-Identifier: GPL-2.0
16 * The "secure_rules" are enabled only on "secureboot" enabled systems.
23 * is not enabled.
34 * The "trusted_rules" are enabled only on "trustedboot" enabled systems.
45 * The "secure_and_trusted_rules" contains rules for both the secure boot and
46 * trusted boot. The "template=ima-modsig" option includes the appended
50 "measure func=KEXEC_KERNEL_CHECK template=ima-modsig",
51 "measure func=MODULE_CHECK template=ima-modsig",
60 * Returns the relevant IMA arch-specific policies based on the system secure
61 * boot state.
/Linux-v6.1/drivers/firmware/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
4 # see Documentation/kbuild/kconfig-language.rst.
19 provides a mechanism for inter-processor communication between SCP
38 enabled or disabled via the SCP firmware
50 tristate "BIOS Enhanced Disk Drive calls determine boot disk"
55 BIOS tries boot from. This information is then exported via sysfs.
57 This option is experimental and is known to fail to boot on some
67 kernel. Say N if you want EDD enabled by default. EDD can be dynamically set
71 bool "Add firmware-provided memory map to sysfs" if EXPERT
74 Add the firmware-provided (unmodified) memory map to /sys/firmware/memmap.
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/Linux-v6.1/drivers/misc/habanalabs/include/common/
Dhl_boot_if.h1 /* SPDX-License-Identifier: GPL-2.0
3 * Copyright 2018-2020 HabanaLabs, Ltd.
11 #define LKD_HARD_RESET_MAGIC 0xED7BD694 /* deprecated - do not use */
53 * Boot continues as usual, but keep in
75 * started, but is not ready yet - chip
80 * trust), boot authentication (chain of
122 * CPU_BOOT_ERR0_ENABLED Error registers enabled.
184 * BOOT DEVICE STATUS bits in BOOT_DEVICE_STS registers
186 * CPU_BOOT_DEV_STS0_SECURITY_EN Security is Enabled.
188 * enabled in FW, which means that
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/Linux-v6.1/mm/
DKconfig.debug1 # SPDX-License-Identifier: GPL-2.0-only
24 use-after-free). The error reports for these checks can be augmented
26 PAGE_OWNER is also selected and enabled on boot.
31 be enabled in combination with hibernation as that would result in
38 enabled by DEBUG_PAGEALLOC_ENABLE_DEFAULT or the debug_pagealloc
54 memory. This can make kmalloc/kfree-intensive workloads much slower.
73 Boot with debugging on by default. SLUB boots by default with
75 equivalent to specifying the "slub_debug" parameter on boot.
79 "slub_debug=-".
92 "page_owner=on" to boot parameter in order to enable it. Eats
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/Linux-v6.1/arch/arm64/include/asm/
Dcpufeature.h1 /* SPDX-License-Identifier: GPL-2.0-only */
9 #include <asm/alternative-macros.h>
29 * between the values, the features are classified into 3 types - LOWER_SAFE,
75 * A @mask field set to full-1 indicates that the corresponding field
78 * A @mask field set to full-0 with the corresponding @val field set
79 * to full-0 denotes that this field has no override
81 * A @mask field set to full-0 with the corresponding @val field set
82 * to full-1 denotes thath this field has an invalid override.
90 * @arm64_ftr_reg - Feature register
139 * c) SCOPE_BOOT_CPU: Check only on the primary boot CPU to detect the
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/Linux-v6.1/arch/arm/mach-mvebu/
Dcoherency_ll.S1 /* SPDX-License-Identifier: GPL-2.0-only */
7 * Gregory CLEMENT <gregory.clement@free-electrons.com>
11 * CPUs during their early boot in an SMP kernel, this why this
13 * primary CPU from C code during its boot.
26 * the coherency fabric is not enabled.
30 tst r1, #CR_M @ Check MMU bit enabled
43 * MMU is enabled, use the virtual address of the coherency
56 * endian-swapped as appropriate so that the calling functions do not
84 * CPU boot, and no stack is available at this point.
88 /* Bail out if the coherency is not enabled */
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/Linux-v6.1/Documentation/ABI/testing/
Dsysfs-firmware-acpi6 information for firmware performance data for system boot,
10 boot:
14 loading the OS boot loader into memory.
17 launching the currently loaded OS boot loader
36 since the last full boot sequence.
38 logged since the last full boot sequence,
49 to obtain a copy of the firmware boot splash and
51 by boot splash applications in order to interact with
52 the firmware boot splash in order to avoid jarring
55 image: The image bitmap. Currently a 32-bit BMP.
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/Linux-v6.1/scripts/package/
Dmkspec9 # Patched for non-x86 by Opencon (L) 2002 <opencon@rio.skydome.net>
15 MAKE="$MAKE -f $srctree/Makefile"
20 if grep -q CONFIG_MODULES=y .config; then
26 if grep -q CONFIG_DRM=y .config; then
27 PROVIDES=kernel-drm
30 PROVIDES="$PROVIDES kernel-$KERNELRELEASE"
31 __KERNELRELEASE=$(echo $KERNELRELEASE | sed -e "s/-/_/g")
32 EXCLUDES="$RCS_TAR_IGNORE --exclude=*vmlinux* --exclude=*.mod \
33 --exclude=*.o --exclude=*.ko --exclude=*.cmd --exclude=Documentation \
34 --exclude=.config.old --exclude=.missing-syscalls.d --exclude=*.s"
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/Linux-v6.1/tools/testing/selftests/kexec/
Dkexec_common_lib.sh2 # SPDX-License-Identifier: GPL-2.0
6 VERBOSE="${VERBOSE:-1}"
7 IKCONFIG="/tmp/config-`uname -r`"
8 KERNEL_IMAGE="/boot/vmlinuz-`uname -r`"
13 [ $VERBOSE -ne 0 ] && echo "[INFO] $1"
19 [ $VERBOSE -ne 0 ] && echo "$1 [PASS]"
26 [ $VERBOSE -ne 0 ] && echo "$1 [FAIL]"
33 [ $VERBOSE -ne 0 ] && echo "$1"
37 # Check efivar SecureBoot-$(the UUID) and SetupMode-$(the UUID).
38 # (Based on kdump-lib.sh)
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/Linux-v6.1/Documentation/powerpc/
Dfirmware-assisted-dump.rst2 Firmware-Assisted Dump
7 The goal of firmware-assisted dump is to enable the dump of
8 a crashed system, and to do so from a fully-reset system, and
12 - Firmware-Assisted Dump (FADump) infrastructure is intended to replace
14 - Fadump uses the same firmware interfaces and memory reservation model
16 - Unlike phyp dump, FADump exports the memory dump through /proc/vmcore
19 - Unlike phyp dump, userspace tool does not need to refer any sysfs
21 - Unlike phyp dump, FADump allows user to release all the memory reserved
23 - Once enabled through kernel boot parameter, FADump can be
28 Comparing with kdump or other strategies, firmware-assisted
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/Linux-v6.1/drivers/platform/mellanox/
Dmlxbf-bootctl.h1 /* SPDX-License-Identifier: GPL-2.0 */
10 * Request that the on-chip watchdog be enabled, or disabled, after
12 * status of the on-chip watchdog. If non-zero, the argument
14 * will not be enabled after the next soft reset. Non-zero errors are
20 * Query the status which has been requested for the on-chip watchdog
27 * Request that a specific boot action be taken at the next soft
28 * reset. By default, the boot action is set by external chip pins,
29 * which are sampled on hard reset. Note that the boot action
33 * values. Non-zero errors are returned as documented below.
38 * Return the specific boot action which will be taken at the next
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/Linux-v6.1/Documentation/networking/
Dnetconsole.rst1 .. SPDX-License-Identifier: GPL-2.0
25 It can be used either built-in or as a module. As a built-in,
28 capture of early kernel panics, it does capture most of the boot
37 netconsole=[+][src-port]@[src-ip]/[<dev>],[tgt-port]@<tgt-ip>/[tgt-macaddr]
41 src-port source for UDP packets (defaults to 6665)
42 src-ip source IP to use (interface address)
44 tgt-port port for logging agent (6666)
45 tgt-ip IP address for logging agent
46 tgt-macaddr ethernet MAC address for logging agent (broadcast)
66 Built-in netconsole starts immediately after the TCP stack is
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/Linux-v6.1/Documentation/admin-guide/mm/
Dzswap.rst12 dynamically allocated RAM-based memory pool. zswap basically trades CPU cycles
13 for potentially reduced swap I/O. This trade-off can also result in a
32 drastically reducing life-shortening writes.
38 Whether Zswap is enabled at the boot time depends on whether
39 the ``CONFIG_ZSWAP_DEFAULT_ON`` Kconfig option is enabled or not.
41 ``zswap.enabled=`` option, for example ``zswap.enabled=0``.
42 Zswap can also be enabled and disabled at runtime using the sysfs interface.
46 echo 1 > /sys/module/zswap/parameters/enabled
70 but it can be overridden at boot time by setting the ``zpool`` attribute,
77 means the compression ratio will always be 2:1 or worse (because of half-full
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/Linux-v6.1/drivers/tty/serial/
DKconfig1 # SPDX-License-Identifier: GPL-2.0
15 enabled when early_param is processed.
19 comment "Non-8250 serial port support"
45 your boot loader (lilo or loadlin) about how to pass options to the
46 kernel at boot time.)
73 your boot loader (lilo or loadlin) about how to pass options to the
74 kernel at boot time.)
84 the console before standard serial driver is probed. This is enabled
86 enabled when early_param is processed.
89 bool "Early console using RISC-V SBI"
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/Linux-v6.1/security/selinux/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
8 This selects NSA Security-Enhanced Linux (SELinux).
13 bool "NSA SELinux boot parameter"
18 to be disabled at boot. If this option is selected, SELinux
22 necessarily enabled.
34 SELinux will then remain disabled until the next boot.
35 This option is similar to the selinux=0 boot parameter, but is to
37 portability across platforms where boot parameters are difficult
42 using the selinux=0 boot parameter instead of enabling this
57 policies. If unsure, say Y. With this option enabled, the
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/Linux-v6.1/arch/arm/boot/dts/
Daks-cdu.dts1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * aks-cdu.dts - Device Tree file for AK signal CDU
9 /dts-v1/;
11 #include "ge863-pro3.dtsi"
20 clock-frequency = <32768>;
32 linux,rs485-enabled-at-boot-time;
33 rs485-rts-delay = <0 0>;
38 linux,rs485-enabled-at-boot-time;
39 rs485-rts-delay = <0 0>;
44 linux,rs485-enabled-at-boot-time;
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/Linux-v6.1/security/loadpin/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
9 enabled, any files that come from other filesystems will be
11 have a root filesystem backed by a read-only device such as
12 dm-verity or a CDROM.
15 bool "Enforce LoadPin at boot"
18 If selected, LoadPin will enforce pinning at boot. If not
19 selected, it can be enabled at boot with the kernel parameter
23 bool "Allow reading files from certain other filesystems that use dm-verity"
27 that use dm-verity. LoadPin maintains a list of verity root
33 on the LoadPin securityfs entry 'dm-verity'. The ioctl
/Linux-v6.1/Documentation/devicetree/bindings/mfd/
Dtps6507x.txt4 - compatible: "ti,tps6507x"
5 - reg: I2C slave address
6 - regulators: This is the list of child nodes that specify the regulator
11 The regulator is matched with the regulator-compatible.
13 The valid regulator-compatible values are:
15 - xxx-supply: Input voltage supply regulator.
16 These entries are required if regulators are enabled for a device.
19 If some of input supply is powered through battery or always-on
23 vindcdc1_2-supply: VDCDC1 and VDCDC2 input.
24 vindcdc3-supply : VDCDC3 input.
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/Linux-v6.1/Documentation/networking/device_drivers/ethernet/cirrus/
Dcs89x0.rst1 .. SPDX-License-Identifier: GPL-2.0
33 2.1 CS8900-based Adapter Configuration
34 2.2 CS8920-based Adapter Configuration
46 5.2.1 Diagnostic Self-Test
56 6.5 Kernel boot parameters
66 The CS8900-based ISA Ethernet Adapters from Cirrus Logic follow
67 IEEE 802.3 standards and support half or full-duplex operation in ISA bus
69 in 16-bit ISA or EISA bus expansion slots and are available in
70 10BaseT-only or 3-media configurations (10BaseT, 10Base2, and AUI for 10Base-5
73 CS8920-based adapters are similar to the CS8900-based adapter with additional
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/Linux-v6.1/kernel/trace/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
21 API, which will be used by other function-entry hooking
27 See Documentation/trace/ftrace-design.rst
32 See Documentation/trace/ftrace-design.rst
37 See Documentation/trace/ftrace-design.rst
63 See Documentation/trace/ftrace-design.rst
68 See Documentation/trace/ftrace-design.rst
73 Arch supports the gcc options -pg with -mfentry
78 Arch supports the gcc options -pg with -mrecord-mcount and -nop-mcount
83 Arch supports objtool --mcount
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/Linux-v6.1/drivers/scsi/bfa/
Dbfa_defs.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
4 * Copyright (c) 2014- QLogic Corporation.
8 * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
34 BFA_MFG_TYPE_LIGHTNING_P0 = 902, /* Lightning mezz card - old */
102 * All numerical fields are in big-endian format.
125 BFA_STATUS_ETIMER = 5, /* Timer expired - Retry, if persists,
129 BFA_STATUS_SFP_UNSUPP = 10, /* Unsupported SFP - Replace SFP */
132 BFA_STATUS_DEVBUSY = 13, /* Device busy - Retry operation */
148 BFA_STATUS_IOC_FAILURE = 56, /* IOC failure - Retry, if persists
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