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nixpkgs/pkgs/os-specific/linux/kernel/common-config.nix

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linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
# WARNING/NOTE: whenever you want to add an option here you need to either
# * mark it as an optional one with `option`,
# * or make sure it works for all the versions in nixpkgs,
# * or check for which kernel versions it will work (using kernel
# changelog, google or whatever) and mark it with `whenOlder` or
# `whenAtLeast`.
# Then do test your change by building all the kernels (or at least
# their configs) in Nixpkgs or else you will guarantee lots and lots
# of pain to users trying to switch to an older kernel because of some
# hardware problems with a new one.
kernel: add a warning/note at the top of common-config so that people would hopefully stop breaking the older kernels
2015-03-24 21:34:54 +00:00
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
# Configuration
pkgs/os-specific: stdenv.lib -> lib
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{ lib, stdenv, version
kernel: add a warning/note at the top of common-config so that people would hopefully stop breaking the older kernels
2015-03-24 21:34:54 +00:00
linux: fix features system
2018-06-25 00:12:17 +00:00
, features ? { grsecurity = false; xen_dom0 = false; }
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
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}:
pkgs/os-specific: stdenv.lib -> lib
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with lib;
with lib.kernel;
with (lib.kernel.whenHelpers version);
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
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let
linux: fix features system
2018-06-25 00:12:17 +00:00
# configuration items have to be part of a subattrs
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
flattenKConf = nested: mapAttrs (_: head) (zipAttrs (attrValues nested));
linux config: add support for xdp sockets and ebpf jit xdp socket support (AF_XDP) is the new way of implementing high performance networking on linux. on arch linux and debian this is already enabled (checked via the links from the nixos manual). moreover, these flags are suggested by the bpf documentation at cilium: https://cilium.readthedocs.io/en/latest/bpf/#compiling-the-kernel additionally the flag `BPF_JIT_ALWAYS_ON` on was suggested to help spectre attack mitigations: https://github.com/torvalds/linux/commit/290af86629b25ffd1ed6232c4e9107da031705cb
2019-11-11 06:57:30 +00:00
whenPlatformHasEBPFJit =
mkIf (stdenv.hostPlatform.isAarch32 ||
stdenv.hostPlatform.isAarch64 ||
stdenv.hostPlatform.isx86_64 ||
(stdenv.hostPlatform.isPowerPC && stdenv.hostPlatform.is64bit) ||
(stdenv.hostPlatform.isMips && stdenv.hostPlatform.is64bit));
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
options = {
debug = {
DEBUG_INFO = if (features.debug or false) then yes else no;
DEBUG_KERNEL = yes;
DEBUG_DEVRES = no;
DYNAMIC_DEBUG = yes;
TIMER_STATS = whenOlder "4.11" yes;
DEBUG_NX_TEST = whenOlder "4.11" no;
DEBUG_STACK_USAGE = no;
kernel: fix errors in configuration With the fix in kernel configuration merging, some kernel configuration items marked as mandatory now correctly trigger an error when unused (while they previously were unused).
2020-04-01 20:25:21 +00:00
DEBUG_STACKOVERFLOW = mkIf (!features.grsecurity) (option no);
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
RCU_TORTURE_TEST = no;
SCHEDSTATS = no;
DETECT_HUNG_TASK = yes;
CRASH_DUMP = option no;
# Easier debugging of NFS issues.
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
SUNRPC_DEBUG = yes;
kernel/common-config: enable SCHED_DEBUG
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# Provide access to tunables like sched_migration_cost_ns
SCHED_DEBUG = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
};
power-management = {
PM_ADVANCED_DEBUG = yes;
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
X86_INTEL_LPSS = yes;
X86_INTEL_PSTATE = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
INTEL_IDLE = yes;
CPU_FREQ_DEFAULT_GOV_PERFORMANCE = yes;
linux: build with SCHEDUTIL governor - it can't be built as a module - it's not set as the default yet - for discussion see https://github.com/NixOS/nixpkgs/pull/42330
2018-08-30 09:15:36 +00:00
CPU_FREQ_GOV_SCHEDUTIL = whenAtLeast "4.9" yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
PM_WAKELOCKS = yes;
kernel: set POWERCAP and INTEL_RAPL These enable some power management settings. They are needed for [s-tui to show power readings](https://github.com/amanusk/s-tui/issues/105). The values chosen here match what Arch Linux has. In particular the Intel specific code is loadable as a module rather than compiled in.
2019-08-22 10:23:37 +00:00
# Power-capping framework and support for INTEL RAPL
POWERCAP = yes;
linux: fix kernel config options Some of the options didn't have correct kernel version constraints, others had been removed or made optional unnecessarily in #84032.
2020-05-26 12:09:20 +00:00
INTEL_RAPL = whenAtLeast "5.3" module;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
};
external-firmware = {
# Support drivers that need external firmware.
STANDALONE = no;
};
proc-config-gz = {
# Make /proc/config.gz available
IKCONFIG = yes;
IKCONFIG_PROC = yes;
};
optimization = {
# Optimize with -O2, not -Os
CC_OPTIMIZE_FOR_SIZE = no;
};
memtest = {
MEMTEST = yes;
};
# Include the CFQ I/O scheduler in the kernel, rather than as a
# module, so that the initrd gets a good I/O scheduler.
scheduler = {
linux: 4.20-rc7 -> 5.0-rc1
2019-01-07 12:57:32 +00:00
IOSCHED_CFQ = whenOlder "5.0" yes; # Removed in 5.0-RC1
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
BLK_CGROUP = yes; # required by CFQ"
linux: enable io cost and io latency block group controller They are enabled by default on Arch.
2020-07-18 12:00:00 +00:00
BLK_CGROUP_IOLATENCY = whenAtLeast "4.19" yes;
BLK_CGROUP_IOCOST = whenAtLeast "5.4" yes;
linux: 4.20-rc7 -> 5.0-rc1
2019-01-07 12:57:32 +00:00
IOSCHED_DEADLINE = whenOlder "5.0" yes; # Removed in 5.0-RC1
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
MQ_IOSCHED_DEADLINE = whenAtLeast "4.11" yes;
BFQ_GROUP_IOSCHED = whenAtLeast "4.12" yes;
MQ_IOSCHED_KYBER = whenAtLeast "4.12" yes;
IOSCHED_BFQ = whenAtLeast "4.12" module;
};
# Enable NUMA.
numa = {
NUMA = option yes;
};
networking = {
NET = yes;
linux: add policy routing config flag for aarch64 CONFIG_IP_MULTIPLE_TABLES is part of the default x86 kernel config but absent from the Aarch64 one. Adding explicitely this flag together with its dependency IP_ADVANCED_ROUTER. Both of these config flags are needed to use the routing policy facilities.
2020-02-29 22:57:43 +00:00
IP_ADVANCED_ROUTER = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
IP_PNP = no;
IP_VS_PROTO_TCP = yes;
IP_VS_PROTO_UDP = yes;
IP_VS_PROTO_ESP = yes;
IP_VS_PROTO_AH = yes;
linux: Enable IPv6 support for IPVS (CONFIG_IP_VS_IPV6)
2019-06-08 08:23:48 +00:00
IP_VS_IPV6 = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
IP_DCCP_CCID3 = no; # experimental
CLS_U32_PERF = yes;
CLS_U32_MARK = yes;
linux config: add support for xdp sockets and ebpf jit xdp socket support (AF_XDP) is the new way of implementing high performance networking on linux. on arch linux and debian this is already enabled (checked via the links from the nixos manual). moreover, these flags are suggested by the bpf documentation at cilium: https://cilium.readthedocs.io/en/latest/bpf/#compiling-the-kernel additionally the flag `BPF_JIT_ALWAYS_ON` on was suggested to help spectre attack mitigations: https://github.com/torvalds/linux/commit/290af86629b25ffd1ed6232c4e9107da031705cb
2019-11-11 06:57:30 +00:00
BPF_JIT = whenPlatformHasEBPFJit yes;
linux: fix kernel config options for i686 Even the default pkgsi686Linux.linux was broken.
2020-06-12 06:52:09 +00:00
BPF_JIT_ALWAYS_ON = whenPlatformHasEBPFJit no; # whenPlatformHasEBPFJit yes; # see https://github.com/NixOS/nixpkgs/issues/79304
linux config: add support for xdp sockets and ebpf jit xdp socket support (AF_XDP) is the new way of implementing high performance networking on linux. on arch linux and debian this is already enabled (checked via the links from the nixos manual). moreover, these flags are suggested by the bpf documentation at cilium: https://cilium.readthedocs.io/en/latest/bpf/#compiling-the-kernel additionally the flag `BPF_JIT_ALWAYS_ON` on was suggested to help spectre attack mitigations: https://github.com/torvalds/linux/commit/290af86629b25ffd1ed6232c4e9107da031705cb
2019-11-11 06:57:30 +00:00
HAVE_EBPF_JIT = whenPlatformHasEBPFJit yes;
BPF_STREAM_PARSER = whenAtLeast "4.19" yes;
XDP_SOCKETS = whenAtLeast "4.19" yes;
linux: fix kernel config options Some of the options didn't have correct kernel version constraints, others had been removed or made optional unnecessarily in #84032.
2020-05-26 12:09:20 +00:00
XDP_SOCKETS_DIAG = whenAtLeast "5.1" yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
WAN = yes;
linux config: Set TCP_CONG_CUBIC=yes to restore the default This will switch the default TCP congestion control algorithm from new Reno to CUBIC. CUBIC is the default since Linux kernel 2.6.19 (see 597811ec167fa) and most (all?) distributions keep this default (e.g. Debian and Ubuntu). On NixOS the default was still new Reno because generate-config.pl changes TCP_CONG_CUBIC from y to m (since we try to build everything as a module by default). To check the active and available algorithms: $ sysctl net.ipv4.tcp_congestion_control net.ipv4.tcp_congestion_control = cubic $ sysctl net.ipv4.tcp_available_congestion_control net.ipv4.tcp_available_congestion_control = cubic reno Note: E.g. x86_64_defconfig sets TCP_CONG_CUBIC=y indirectly via CONFIG_TCP_CONG_ADVANCED=y (but CUBIC is also the default if set to no, see net/ipv4/Kconfig).
2020-02-23 17:45:29 +00:00
TCP_CONG_CUBIC = yes; # This is the default congestion control algorithm since 2.6.19
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
# Required by systemd per-cgroup firewalling
CGROUP_BPF = option yes;
CGROUP_NET_PRIO = yes; # Required by systemd
IP_ROUTE_VERBOSE = yes;
IP_MROUTE_MULTIPLE_TABLES = yes;
IP_MULTICAST = yes;
linux: add policy routing config flag for aarch64 CONFIG_IP_MULTIPLE_TABLES is part of the default x86 kernel config but absent from the Aarch64 one. Adding explicitely this flag together with its dependency IP_ADVANCED_ROUTER. Both of these config flags are needed to use the routing policy facilities.
2020-02-29 22:57:43 +00:00
IP_MULTIPLE_TABLES = yes;
kernel config: explicitly enable CONFIG_IPV6 We currently build CONFIG_IPV6=m. This seems to be not really well-supported in mainline kernels - see https://lore.kernel.org/netdev/20201115224509.2020651-1-flokli@flokli.de/T/#u Compiling it as a module doesn't give too much benefit - even for people who did explicitly set `enableIPv6` to false, the `ipv6` module was still loaded, as soon as another module was loaded that requires it (bridge,br_netfilter,wireguard,ip6table_mangle,sctp,…). By compiling it in, we only loose the possibility to not add it to `boot.kernelModules` anymore (as it's part of the kernel directly). The space savings are negligible. People wanting to disable IPv6 still get the appropriate sysctls and options set (while having the kernel code loaded), nothing is really changing here.
2020-11-16 12:02:48 +00:00
IPV6 = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
IPV6_ROUTER_PREF = yes;
IPV6_ROUTE_INFO = yes;
IPV6_OPTIMISTIC_DAD = yes;
IPV6_MULTIPLE_TABLES = yes;
IPV6_SUBTREES = yes;
IPV6_MROUTE = yes;
IPV6_MROUTE_MULTIPLE_TABLES = yes;
IPV6_PIMSM_V2 = yes;
IPV6_FOU_TUNNEL = whenAtLeast "4.7" module;
NET_CLS_BPF = whenAtLeast "4.4" module;
NET_ACT_BPF = whenAtLeast "4.4" module;
linux/kernel: enable QoS and/or fair queueing This allows to set queueing disciplines different than a simple fifo, like fq_codel, which is the default in systemd since quite some time. NET_SCHED is already set in the kernels x86_64_defconfig, but not on arm/aarch64, so let's set it here.
2019-09-01 00:24:38 +00:00
NET_SCHED = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
L2TP_V3 = yes;
L2TP_IP = module;
L2TP_ETH = module;
BRIDGE_VLAN_FILTERING = yes;
BONDING = module;
NET_L3_MASTER_DEV = option yes;
NET_FOU_IP_TUNNELS = option yes;
IP_NF_TARGET_REDIRECT = module;
PPP_MULTILINK = yes; # PPP multilink support
PPP_FILTER = yes;
# needed for iwd WPS support (wpa_supplicant replacement)
KEY_DH_OPERATIONS = whenAtLeast "4.7" yes;
nftables: enable works in linux kernel 4.17 and 4.18
2018-08-24 13:54:50 +00:00
# needed for nftables
nftables: enable all features
2019-10-14 13:41:39 +00:00
# Networking Options
NETFILTER = yes;
NETFILTER_ADVANCED = yes;
# Core Netfilter Configuration
NF_CONNTRACK_ZONES = yes;
NF_CONNTRACK_EVENTS = yes;
NF_CONNTRACK_TIMEOUT = yes;
NF_CONNTRACK_TIMESTAMP = yes;
NETFILTER_NETLINK_GLUE_CT = yes;
linux: fix kernel config options Some of the options didn't have correct kernel version constraints, others had been removed or made optional unnecessarily in #84032.
2020-05-26 12:09:20 +00:00
NF_TABLES_INET = mkMerge [ (whenOlder "4.17" module)
(whenAtLeast "4.17" yes) ];
NF_TABLES_NETDEV = mkMerge [ (whenOlder "4.17" module)
(whenAtLeast "4.17" yes) ];
nftables: enable all features
2019-10-14 13:41:39 +00:00
# IP: Netfilter Configuration
linux: fix kernel config options Some of the options didn't have correct kernel version constraints, others had been removed or made optional unnecessarily in #84032.
2020-05-26 12:09:20 +00:00
NF_TABLES_IPV4 = mkMerge [ (whenOlder "4.17" module)
(whenAtLeast "4.17" yes) ];
NF_TABLES_ARP = mkMerge [ (whenOlder "4.17" module)
(whenAtLeast "4.17" yes) ];
nftables: enable all features
2019-10-14 13:41:39 +00:00
# IPv6: Netfilter Configuration
linux: fix kernel config options Some of the options didn't have correct kernel version constraints, others had been removed or made optional unnecessarily in #84032.
2020-05-26 12:09:20 +00:00
NF_TABLES_IPV6 = mkMerge [ (whenOlder "4.17" module)
(whenAtLeast "4.17" yes) ];
nftables: enable all features
2019-10-14 13:41:39 +00:00
# Bridge Netfilter Configuration
NF_TABLES_BRIDGE = mkMerge [ (whenBetween "4.19" "5.3" yes)
(whenAtLeast "5.3" module) ];
kernel/common-config: enable INET_{TCP,UDP,RAW}_DIAG and INET_DIAG_DESTROY
2019-09-24 19:52:42 +00:00
linux: Enable `CONFIG_NET_DROP_MONITOR` by default. Needed for subscribing to dropped packets (e.g. via `dropwatch`).
2020-04-13 01:36:15 +00:00
# needed for `dropwatch`
# Builtin-only since https://github.com/torvalds/linux/commit/f4b6bcc7002f0e3a3428bac33cf1945abff95450
NET_DROP_MONITOR = yes;
kernel/common-config: enable INET_{TCP,UDP,RAW}_DIAG and INET_DIAG_DESTROY
2019-09-24 19:52:42 +00:00
# needed for ss
linux: fix kernel config options Some of the options didn't have correct kernel version constraints, others had been removed or made optional unnecessarily in #84032.
2020-05-26 12:09:20 +00:00
INET_DIAG = module;
INET_TCP_DIAG = module;
kernel/common-config: enable INET_{TCP,UDP,RAW}_DIAG and INET_DIAG_DESTROY
2019-09-24 19:52:42 +00:00
INET_UDP_DIAG = module;
INET_RAW_DIAG = whenAtLeast "4.14" module;
INET_DIAG_DESTROY = whenAtLeast "4.9" yes;
linux: build with multipath tcp support Starting from Linx 5.6, there is partial upstream support for the Multipath TCP protocol. There are no downsides to enabling it afaict, since applications need to opt-in when creating a socket. From https://github.com/multipath-tcp/mptcp_net-next/wiki: "[...] users of regular TCP continue to get the same type of connection and performance unless MPTCP is requested."
2021-01-07 00:49:23 +00:00
# enable multipath-tcp
MPTCP = whenAtLeast "5.6" yes;
MPTCP_IPV6 = whenAtLeast "5.6" yes;
INET_MPTCP_DIAG = whenAtLeast "5.9" module;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
};
wireless = {
CFG80211_WEXT = option yes; # Without it, ipw2200 drivers don't build
IPW2100_MONITOR = option yes; # support promiscuous mode
IPW2200_MONITOR = option yes; # support promiscuous mode
HOSTAP_FIRMWARE = option yes; # Support downloading firmware images with Host AP driver
HOSTAP_FIRMWARE_NVRAM = option yes;
ATH9K_PCI = option yes; # Detect Atheros AR9xxx cards on PCI(e) bus
ATH9K_AHB = option yes; # Ditto, AHB bus
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
B43_PHY_HT = option yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
BCMA_HOST_PCI = option yes;
linux: build rtw88 module Adds support for Realtek wireless/bluetooth cards found in some Lenovo laptops. The old `r8822be` module was removed in favour of this one.
2019-09-09 23:08:28 +00:00
RTW88 = whenAtLeast "5.2" module;
linux: 5.7-rc6 -> 5.8-rc1
2020-06-15 15:10:00 +00:00
RTW88_8822BE = mkMerge [ (whenBetween "5.2" "5.8" yes) (whenAtLeast "5.8" module) ];
RTW88_8822CE = mkMerge [ (whenBetween "5.2" "5.8" yes) (whenAtLeast "5.8" module) ];
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
};
fb = {
FB = yes;
FB_EFI = yes;
FB_NVIDIA_I2C = yes; # Enable DDC Support
FB_RIVA_I2C = yes;
FB_ATY_CT = yes; # Mach64 CT/VT/GT/LT (incl. 3D RAGE) support
FB_ATY_GX = yes; # Mach64 GX support
FB_SAVAGE_I2C = yes;
FB_SAVAGE_ACCEL = yes;
FB_SIS_300 = yes;
FB_SIS_315 = yes;
FB_3DFX_ACCEL = yes;
FB_VESA = yes;
FRAMEBUFFER_CONSOLE = yes;
linux: Enable fbcon deferred takeover when possible This config value ensures that when booting through e.g. UEFI, the existing framebuffer contents stay put until the first character is printed. As the default NixOS stage-1 immediately outputs a welcome message on init, this does not impact it, but it will allow for a cleaner boot when configured as such.
2020-05-17 17:30:11 +00:00
FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER = whenAtLeast "4.19" yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
FRAMEBUFFER_CONSOLE_ROTATION = yes;
linux: ability to merge structured configs This should make the composability of kernel configurations more straigthforward. - now distinguish freeform options from tristate ones - will look for a structured config in kernelPatches too one can now access the structuredConfig from a kernel via linux_test.configfile.structuredConfig in order to reinject it into another kernel, no need to rewrite the config from scratch The following merge strategies are used in case of conflict: -- freeform items must be equal or they conflict (mergeEqualOption) -- for tristate (y/m/n) entries, I use the mergeAnswer strategy which takes the best available value, "best" being defined by the user (by default "y" > "m" > "n", e.g. if one entry is both marked "y" and "n", "y" wins) -- if one item is both marked optional/mandatory, mandatory wins (mergeFalseByDefault)
2018-10-03 09:49:50 +00:00
FB_GEODE = mkIf (stdenv.hostPlatform.system == "i686-linux") yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
};
video = {
# Allow specifying custom EDID on the kernel command line
DRM_LOAD_EDID_FIRMWARE = yes;
VGA_SWITCHEROO = yes; # Hybrid graphics support
DRM_GMA600 = yes;
DRM_GMA3600 = yes;
linux: set CONFIG_DRM_VMWGFX_FBCON y Fixes https://github.com/NixOS/nixpkgs/issues/58070, and brings NixOS into line with Ubuntu/Fedora/Arch/etc. Tested that all kernels in Nixpkgs that build before this change build after it.
2019-05-02 10:05:42 +00:00
DRM_VMWGFX_FBCON = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
# necessary for amdgpu polaris support
DRM_AMD_POWERPLAY = whenBetween "4.5" "4.9" yes;
# (experimental) amdgpu support for verde and newer chipsets
DRM_AMDGPU_SI = whenAtLeast "4.9" yes;
# (stable) amdgpu support for bonaire and newer chipsets
DRM_AMDGPU_CIK = whenAtLeast "4.9" yes;
kernel config: CONFIG_DRM_DP_AUX_CHARDEV
2019-08-06 22:29:54 +00:00
# Allow device firmware updates
DRM_DP_AUX_CHARDEV = whenAtLeast "4.6" yes;
kernel config: Fix recent i686 builds
2018-06-30 11:01:22 +00:00
} // optionalAttrs (stdenv.hostPlatform.system == "x86_64-linux") {
# Intel GVT-g graphics virtualization supports 64-bit only
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
DRM_I915_GVT = whenAtLeast "4.16" yes;
DRM_I915_GVT_KVMGT = whenAtLeast "4.16" module;
};
sound = {
SND_DYNAMIC_MINORS = yes;
SND_AC97_POWER_SAVE = yes; # AC97 Power-Saving Mode
SND_HDA_INPUT_BEEP = yes; # Support digital beep via input layer
SND_HDA_RECONFIG = yes; # Support reconfiguration of jack functions
# Support configuring jack functions via fw mechanism at boot
SND_HDA_PATCH_LOADER = yes;
linux config: SND_HDA_CODEC_CA0132_DSP for <5.7 The default enable for SND_HDA_CODEC_CA0132_DSP was already merged into 5.7-rc1 [1], which means we can adjust the whenOlder to 5.7. [1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=652bb5d8df4b3a79ed350db35cda12637e63efa7
2020-04-17 06:43:49 +00:00
SND_HDA_CODEC_CA0132_DSP = whenOlder "5.7" yes; # Enable DSP firmware loading on Creative Soundblaster Z/Zx/ZxR/Recon
linux: enable SND_OSSEMUL Fixes #54074
2019-02-18 16:11:37 +00:00
SND_OSSEMUL = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
SND_USB_CAIAQ_INPUT = yes;
# Enable PSS mixer (Beethoven ADSP-16 and other compatible)
PSS_MIXER = whenOlder "4.12" yes;
linux config: enable Sound Open Firmware support
2020-04-29 03:34:41 +00:00
# Enable Sound Open Firmware support
} // optionalAttrs (stdenv.hostPlatform.system == "x86_64-linux" &&
versionAtLeast version "5.5") {
SND_SOC_SOF_TOPLEVEL = yes;
SND_SOC_SOF_ACPI = module;
SND_SOC_SOF_PCI = module;
SND_SOC_SOF_APOLLOLAKE_SUPPORT = yes;
SND_SOC_SOF_CANNONLAKE_SUPPORT = yes;
SND_SOC_SOF_COFFEELAKE_SUPPORT = yes;
linux: 5.8-rc2 -> 5.8-rc4
2020-07-10 14:23:46 +00:00
SND_SOC_SOF_COMETLAKE_H_SUPPORT = whenOlder "5.8" yes;
linux config: enable Sound Open Firmware support
2020-04-29 03:34:41 +00:00
SND_SOC_SOF_COMETLAKE_LP_SUPPORT = yes;
SND_SOC_SOF_ELKHARTLAKE_SUPPORT = yes;
SND_SOC_SOF_GEMINILAKE_SUPPORT = yes;
SND_SOC_SOF_HDA_AUDIO_CODEC = yes;
linux: fix kernel config options for 5.7
2020-06-10 12:07:15 +00:00
SND_SOC_SOF_HDA_COMMON_HDMI_CODEC = whenOlder "5.7" yes;
linux config: enable Sound Open Firmware support
2020-04-29 03:34:41 +00:00
SND_SOC_SOF_HDA_LINK = yes;
SND_SOC_SOF_ICELAKE_SUPPORT = yes;
SND_SOC_SOF_INTEL_TOPLEVEL = yes;
SND_SOC_SOF_JASPERLAKE_SUPPORT = yes;
SND_SOC_SOF_MERRIFIELD_SUPPORT = yes;
SND_SOC_SOF_TIGERLAKE_SUPPORT = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
};
usb-serial = {
USB_SERIAL_GENERIC = yes; # USB Generic Serial Driver
} // optionalAttrs (versionOlder version "4.16") {
kernel config: Minor text fixes
2018-06-30 11:05:29 +00:00
# Include firmware for various USB serial devices.
# Only applicable for kernels below 4.16, after that no firmware is shipped in the kernel tree.
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
USB_SERIAL_KEYSPAN_MPR = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
USB_SERIAL_KEYSPAN_USA28 = yes;
USB_SERIAL_KEYSPAN_USA28X = yes;
USB_SERIAL_KEYSPAN_USA28XA = yes;
USB_SERIAL_KEYSPAN_USA28XB = yes;
USB_SERIAL_KEYSPAN_USA19 = yes;
USB_SERIAL_KEYSPAN_USA18X = yes;
USB_SERIAL_KEYSPAN_USA19W = yes;
USB_SERIAL_KEYSPAN_USA19QW = yes;
USB_SERIAL_KEYSPAN_USA19QI = yes;
USB_SERIAL_KEYSPAN_USA49W = yes;
USB_SERIAL_KEYSPAN_USA49WLC = yes;
};
usb = {
linux: ability to merge structured configs This should make the composability of kernel configurations more straigthforward. - now distinguish freeform options from tristate ones - will look for a structured config in kernelPatches too one can now access the structuredConfig from a kernel via linux_test.configfile.structuredConfig in order to reinject it into another kernel, no need to rewrite the config from scratch The following merge strategies are used in case of conflict: -- freeform items must be equal or they conflict (mergeEqualOption) -- for tristate (y/m/n) entries, I use the mergeAnswer strategy which takes the best available value, "best" being defined by the user (by default "y" > "m" > "n", e.g. if one entry is both marked "y" and "n", "y" wins) -- if one item is both marked optional/mandatory, mandatory wins (mergeFalseByDefault)
2018-10-03 09:49:50 +00:00
USB_DEBUG = { optional = true; tristate = whenOlder "4.18" "n";};
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
USB_EHCI_ROOT_HUB_TT = yes; # Root Hub Transaction Translators
USB_EHCI_TT_NEWSCHED = yes; # Improved transaction translator scheduling
linux: enable config option for raw HID devices This flag allows for things like Uninterruptable Power Supplies to work properly. See https://cateee.net/lkddb/web-lkddb/USB_HIDDEV.html for more information.
2019-06-14 22:15:12 +00:00
USB_HIDDEV = yes; # USB Raw HID Devices (like monitor controls and Uninterruptable Power Supplies)
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
};
# Filesystem options - in particular, enable extended attributes and
# ACLs for all filesystems that support them.
filesystem = {
FANOTIFY = yes;
TMPFS = yes;
TMPFS_POSIX_ACL = yes;
linux: 5.0-rc8 -> 5.1-rc2
2019-03-31 18:37:08 +00:00
FS_ENCRYPTION = if (versionAtLeast version "5.1") then yes else whenAtLeast "4.9" (option module);
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
EXT2_FS_XATTR = yes;
EXT2_FS_POSIX_ACL = yes;
EXT2_FS_SECURITY = yes;
EXT3_FS_POSIX_ACL = yes;
EXT3_FS_SECURITY = yes;
EXT4_FS_POSIX_ACL = yes;
EXT4_FS_SECURITY = yes;
linux: ability to merge structured configs This should make the composability of kernel configurations more straigthforward. - now distinguish freeform options from tristate ones - will look for a structured config in kernelPatches too one can now access the structuredConfig from a kernel via linux_test.configfile.structuredConfig in order to reinject it into another kernel, no need to rewrite the config from scratch The following merge strategies are used in case of conflict: -- freeform items must be equal or they conflict (mergeEqualOption) -- for tristate (y/m/n) entries, I use the mergeAnswer strategy which takes the best available value, "best" being defined by the user (by default "y" > "m" > "n", e.g. if one entry is both marked "y" and "n", "y" wins) -- if one item is both marked optional/mandatory, mandatory wins (mergeFalseByDefault)
2018-10-03 09:49:50 +00:00
EXT4_ENCRYPTION = { optional = true; tristate = if (versionOlder version "4.8") then "m" else "y"; };
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
REISERFS_FS_XATTR = option yes;
REISERFS_FS_POSIX_ACL = option yes;
REISERFS_FS_SECURITY = option yes;
JFS_POSIX_ACL = option yes;
JFS_SECURITY = option yes;
XFS_QUOTA = option yes;
XFS_POSIX_ACL = option yes;
XFS_RT = option yes; # XFS Realtime subvolume support
OCFS2_DEBUG_MASKLOG = option no;
BTRFS_FS_POSIX_ACL = yes;
UBIFS_FS_ADVANCED_COMPR = option yes;
F2FS_FS = module;
F2FS_FS_SECURITY = option yes;
F2FS_FS_ENCRYPTION = option yes;
UDF_FS = module;
NFSD_PNFS = whenBetween "4.0" "4.6" yes;
NFSD_V2_ACL = yes;
NFSD_V3 = yes;
NFSD_V3_ACL = yes;
NFSD_V4 = yes;
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
NFSD_V4_SECURITY_LABEL = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
NFS_FSCACHE = yes;
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
NFS_SWAP = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
NFS_V3_ACL = yes;
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
NFS_V4_1 = yes; # NFSv4.1 client support
NFS_V4_2 = yes;
NFS_V4_SECURITY_LABEL = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
CIFS_XATTR = yes;
kernel-config: CIFS_POSIX no longer exists
2018-12-21 14:10:17 +00:00
CIFS_POSIX = option yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
CIFS_FSCACHE = yes;
linux: 4.18-rc8 -> 4.19-rc1
2018-08-27 01:50:19 +00:00
CIFS_STATS = whenOlder "4.19" yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
CIFS_WEAK_PW_HASH = yes;
CIFS_UPCALL = yes;
linux: fix kernel config options Some of the options didn't have correct kernel version constraints, others had been removed or made optional unnecessarily in #84032.
2020-05-26 12:09:20 +00:00
CIFS_ACL = whenOlder "5.3" yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
CIFS_DFS_UPCALL = yes;
CIFS_SMB2 = whenOlder "4.13" yes;
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
CEPH_FSCACHE = yes;
CEPH_FS_POSIX_ACL = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
SQUASHFS_FILE_DIRECT = yes;
SQUASHFS_DECOMP_MULTI_PERCPU = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
SQUASHFS_XATTR = yes;
SQUASHFS_ZLIB = yes;
SQUASHFS_LZO = yes;
SQUASHFS_XZ = yes;
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
SQUASHFS_LZ4 = yes;
kernel config: add support for CONFIG_SQUASHFS_ZSTD (#52967) Also, allow override `make-squashfs.nix` compression parameters.
2019-01-17 13:24:44 +00:00
SQUASHFS_ZSTD = whenAtLeast "4.14" yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
# Native Language Support modules, needed by some filesystems
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
NLS = yes;
linux: ability to merge structured configs This should make the composability of kernel configurations more straigthforward. - now distinguish freeform options from tristate ones - will look for a structured config in kernelPatches too one can now access the structuredConfig from a kernel via linux_test.configfile.structuredConfig in order to reinject it into another kernel, no need to rewrite the config from scratch The following merge strategies are used in case of conflict: -- freeform items must be equal or they conflict (mergeEqualOption) -- for tristate (y/m/n) entries, I use the mergeAnswer strategy which takes the best available value, "best" being defined by the user (by default "y" > "m" > "n", e.g. if one entry is both marked "y" and "n", "y" wins) -- if one item is both marked optional/mandatory, mandatory wins (mergeFalseByDefault)
2018-10-03 09:49:50 +00:00
NLS_DEFAULT = freeform "utf8";
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
NLS_UTF8 = module;
kernel config: Minor text fixes
2018-06-30 11:05:29 +00:00
NLS_CODEPAGE_437 = module; # VFAT default for the codepage= mount option
NLS_ISO8859_1 = module; # VFAT default for the iocharset= mount option
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
DEVTMPFS = yes;
};
security = {
# Detect writes to read-only module pages
linux: ability to merge structured configs This should make the composability of kernel configurations more straigthforward. - now distinguish freeform options from tristate ones - will look for a structured config in kernelPatches too one can now access the structuredConfig from a kernel via linux_test.configfile.structuredConfig in order to reinject it into another kernel, no need to rewrite the config from scratch The following merge strategies are used in case of conflict: -- freeform items must be equal or they conflict (mergeEqualOption) -- for tristate (y/m/n) entries, I use the mergeAnswer strategy which takes the best available value, "best" being defined by the user (by default "y" > "m" > "n", e.g. if one entry is both marked "y" and "n", "y" wins) -- if one item is both marked optional/mandatory, mandatory wins (mergeFalseByDefault)
2018-10-03 09:49:50 +00:00
DEBUG_SET_MODULE_RONX = { optional = true; tristate = whenOlder "4.11" "y"; };
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
RANDOMIZE_BASE = option yes;
STRICT_DEVMEM = option yes; # Filter access to /dev/mem
linux: fix kernel config options Some of the options didn't have correct kernel version constraints, others had been removed or made optional unnecessarily in #84032.
2020-05-26 12:09:20 +00:00
SECURITY_SELINUX_BOOTPARAM_VALUE = whenOlder "5.1" (freeform "0"); # Disable SELinux by default
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
# Prevent processes from ptracing non-children processes
SECURITY_YAMA = option yes;
linux: ability to merge structured configs This should make the composability of kernel configurations more straigthforward. - now distinguish freeform options from tristate ones - will look for a structured config in kernelPatches too one can now access the structuredConfig from a kernel via linux_test.configfile.structuredConfig in order to reinject it into another kernel, no need to rewrite the config from scratch The following merge strategies are used in case of conflict: -- freeform items must be equal or they conflict (mergeEqualOption) -- for tristate (y/m/n) entries, I use the mergeAnswer strategy which takes the best available value, "best" being defined by the user (by default "y" > "m" > "n", e.g. if one entry is both marked "y" and "n", "y" wins) -- if one item is both marked optional/mandatory, mandatory wins (mergeFalseByDefault)
2018-10-03 09:49:50 +00:00
DEVKMEM = mkIf (!features.grsecurity) no; # Disable /dev/kmem
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
USER_NS = yes; # Support for user namespaces
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
SECURITY_APPARMOR = yes;
DEFAULT_SECURITY_APPARMOR = yes;
linux: disable module signing Without this, the kernel would generate a random one for us which obviously isn't reproducible. `nix-build -A linux --check` succeeds now! (Tested at different times with different kernel)
2020-12-23 06:33:25 +00:00
MODULE_SIG = no; # r13y, generates a random key during build and bakes it in
# Depends on MODULE_SIG and only really helps when you sign your modules
# and enforce signatures which we don't do by default.
linux: Optional SECURITY_LOCKDOWN_LSM The option has been removed in the most recent dot releases
2021-01-11 16:09:02 +00:00
SECURITY_LOCKDOWN_LSM = option no;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
} // optionalAttrs (!stdenv.hostPlatform.isAarch32) {
# Detect buffer overflows on the stack
linux: ability to merge structured configs This should make the composability of kernel configurations more straigthforward. - now distinguish freeform options from tristate ones - will look for a structured config in kernelPatches too one can now access the structuredConfig from a kernel via linux_test.configfile.structuredConfig in order to reinject it into another kernel, no need to rewrite the config from scratch The following merge strategies are used in case of conflict: -- freeform items must be equal or they conflict (mergeEqualOption) -- for tristate (y/m/n) entries, I use the mergeAnswer strategy which takes the best available value, "best" being defined by the user (by default "y" > "m" > "n", e.g. if one entry is both marked "y" and "n", "y" wins) -- if one item is both marked optional/mandatory, mandatory wins (mergeFalseByDefault)
2018-10-03 09:49:50 +00:00
CC_STACKPROTECTOR_REGULAR = {optional = true; tristate = whenOlder "4.18" "y";};
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
};
microcode = {
MICROCODE = yes;
MICROCODE_INTEL = yes;
MICROCODE_AMD = yes;
} // optionalAttrs (versionAtLeast version "4.10") {
# Write Back Throttling
# https://lwn.net/Articles/682582/
# https://bugzilla.kernel.org/show_bug.cgi?id=12309#c655
BLK_WBT = yes;
linux: 4.20-rc7 -> 5.0-rc1
2019-01-07 12:57:32 +00:00
BLK_WBT_SQ = whenOlder "5.0" yes; # Removed in 5.0-RC1
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
BLK_WBT_MQ = yes;
};
container = {
linux: enable CGROUP_HUGETLB, CGROUP_PERF, CGROUP_RDMA (#50225) These options were added in: NAMESPACES 2.6.25 CGROUP_DEVICE 2.6.26 CGROUP_HUGETLB 3.6 CGROUP_PERF 2.6.39 CGROUP_RDMA 4.11
2018-11-13 01:13:00 +00:00
NAMESPACES = yes; # Required by 'unshare' used by 'nixos-install'
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
RT_GROUP_SCHED = no;
linux: enable CGROUP_HUGETLB, CGROUP_PERF, CGROUP_RDMA (#50225) These options were added in: NAMESPACES 2.6.25 CGROUP_DEVICE 2.6.26 CGROUP_HUGETLB 3.6 CGROUP_PERF 2.6.39 CGROUP_RDMA 4.11
2018-11-13 01:13:00 +00:00
CGROUP_DEVICE = yes;
CGROUP_HUGETLB = yes;
CGROUP_PERF = yes;
CGROUP_RDMA = whenAtLeast "4.11" yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
MEMCG = yes;
MEMCG_SWAP = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
DEVPTS_MULTIPLE_INSTANCES = whenOlder "4.7" yes;
BLK_DEV_THROTTLING = yes;
linux: 4.20-rc7 -> 5.0-rc1
2019-01-07 12:57:32 +00:00
CFQ_GROUP_IOSCHED = whenOlder "5.0" yes; # Removed in 5.0-RC1
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
CGROUP_PIDS = whenAtLeast "4.3" yes;
};
staging = {
# Enable staging drivers. These are somewhat experimental, but
# they generally don't hurt.
STAGING = yes;
};
proc-events = {
# PROC_EVENTS requires that the netlink connector is not built
# as a module. This is required by libcgroup's cgrulesengd.
CONNECTOR = yes;
PROC_EVENTS = yes;
};
tracing = {
FTRACE = yes;
KPROBES = yes;
FUNCTION_TRACER = yes;
FTRACE_SYSCALLS = yes;
SCHED_TRACER = yes;
STACK_TRACER = yes;
linux: ability to merge structured configs This should make the composability of kernel configurations more straigthforward. - now distinguish freeform options from tristate ones - will look for a structured config in kernelPatches too one can now access the structuredConfig from a kernel via linux_test.configfile.structuredConfig in order to reinject it into another kernel, no need to rewrite the config from scratch The following merge strategies are used in case of conflict: -- freeform items must be equal or they conflict (mergeEqualOption) -- for tristate (y/m/n) entries, I use the mergeAnswer strategy which takes the best available value, "best" being defined by the user (by default "y" > "m" > "n", e.g. if one entry is both marked "y" and "n", "y" wins) -- if one item is both marked optional/mandatory, mandatory wins (mergeFalseByDefault)
2018-10-03 09:49:50 +00:00
UPROBE_EVENT = { optional = true; tristate = whenOlder "4.11" "y";};
UPROBE_EVENTS = { optional = true; tristate = whenAtLeast "4.11" "y";};
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
BPF_SYSCALL = whenAtLeast "4.4" yes;
BPF_EVENTS = whenAtLeast "4.4" yes;
FUNCTION_PROFILER = yes;
RING_BUFFER_BENCHMARK = no;
};
virtualisation = {
PARAVIRT = option yes;
linux: ability to merge structured configs This should make the composability of kernel configurations more straigthforward. - now distinguish freeform options from tristate ones - will look for a structured config in kernelPatches too one can now access the structuredConfig from a kernel via linux_test.configfile.structuredConfig in order to reinject it into another kernel, no need to rewrite the config from scratch The following merge strategies are used in case of conflict: -- freeform items must be equal or they conflict (mergeEqualOption) -- for tristate (y/m/n) entries, I use the mergeAnswer strategy which takes the best available value, "best" being defined by the user (by default "y" > "m" > "n", e.g. if one entry is both marked "y" and "n", "y" wins) -- if one item is both marked optional/mandatory, mandatory wins (mergeFalseByDefault)
2018-10-03 09:49:50 +00:00
HYPERVISOR_GUEST = mkIf (!features.grsecurity) yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
PARAVIRT_SPINLOCKS = option yes;
KVM_APIC_ARCHITECTURE = whenOlder "4.8" yes;
KVM_ASYNC_PF = yes;
linux: ability to merge structured configs This should make the composability of kernel configurations more straigthforward. - now distinguish freeform options from tristate ones - will look for a structured config in kernelPatches too one can now access the structuredConfig from a kernel via linux_test.configfile.structuredConfig in order to reinject it into another kernel, no need to rewrite the config from scratch The following merge strategies are used in case of conflict: -- freeform items must be equal or they conflict (mergeEqualOption) -- for tristate (y/m/n) entries, I use the mergeAnswer strategy which takes the best available value, "best" being defined by the user (by default "y" > "m" > "n", e.g. if one entry is both marked "y" and "n", "y" wins) -- if one item is both marked optional/mandatory, mandatory wins (mergeFalseByDefault)
2018-10-03 09:49:50 +00:00
KVM_COMPAT = { optional = true; tristate = whenBetween "4.0" "4.12" "y"; };
KVM_DEVICE_ASSIGNMENT = { optional = true; tristate = whenBetween "3.10" "4.12" "y"; };
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
KVM_GENERIC_DIRTYLOG_READ_PROTECT = whenAtLeast "4.0" yes;
linux: convert hardened-config to a structured one
2018-10-03 09:53:23 +00:00
KVM_GUEST = mkIf (!features.grsecurity) yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
KVM_MMIO = yes;
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
KVM_VFIO = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
KSM = yes;
VIRT_DRIVERS = yes;
# We nneed 64 GB (PAE) support for Xen guest support
linux: ability to merge structured configs This should make the composability of kernel configurations more straigthforward. - now distinguish freeform options from tristate ones - will look for a structured config in kernelPatches too one can now access the structuredConfig from a kernel via linux_test.configfile.structuredConfig in order to reinject it into another kernel, no need to rewrite the config from scratch The following merge strategies are used in case of conflict: -- freeform items must be equal or they conflict (mergeEqualOption) -- for tristate (y/m/n) entries, I use the mergeAnswer strategy which takes the best available value, "best" being defined by the user (by default "y" > "m" > "n", e.g. if one entry is both marked "y" and "n", "y" wins) -- if one item is both marked optional/mandatory, mandatory wins (mergeFalseByDefault)
2018-10-03 09:49:50 +00:00
HIGHMEM64G = { optional = true; tristate = mkIf (!stdenv.is64bit) "y";};
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
linux: ability to merge structured configs This should make the composability of kernel configurations more straigthforward. - now distinguish freeform options from tristate ones - will look for a structured config in kernelPatches too one can now access the structuredConfig from a kernel via linux_test.configfile.structuredConfig in order to reinject it into another kernel, no need to rewrite the config from scratch The following merge strategies are used in case of conflict: -- freeform items must be equal or they conflict (mergeEqualOption) -- for tristate (y/m/n) entries, I use the mergeAnswer strategy which takes the best available value, "best" being defined by the user (by default "y" > "m" > "n", e.g. if one entry is both marked "y" and "n", "y" wins) -- if one item is both marked optional/mandatory, mandatory wins (mergeFalseByDefault)
2018-10-03 09:49:50 +00:00
VFIO_PCI_VGA = mkIf stdenv.is64bit yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
kernel: Disable VirtualBox guest modules. These break the modules from VirtualBox additions. Fixes issue https://github.com/NixOS/nixpkgs/issues/58127.
2019-05-04 19:13:26 +00:00
# VirtualBox guest drivers in the kernel conflict with the ones in the
# official additions package and prevent the vboxsf module from loading,
# so disable them for now.
VBOXGUEST = option no;
DRM_VBOXVIDEO = option no;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
} // optionalAttrs (stdenv.isx86_64 || stdenv.isi686) ({
XEN = option yes;
# XXX: why isn't this in the xen-dom0 conditional section below?
XEN_DOM0 = option yes;
linux: fix features system
2018-06-25 00:12:17 +00:00
} // optionalAttrs features.xen_dom0 {
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
PCI_XEN = option yes;
HVC_XEN = option yes;
HVC_XEN_FRONTEND = option yes;
XEN_SYS_HYPERVISOR = option yes;
SWIOTLB_XEN = option yes;
XEN_BACKEND = option yes;
XEN_BALLOON = option yes;
XEN_BALLOON_MEMORY_HOTPLUG = option yes;
XEN_EFI = option yes;
XEN_HAVE_PVMMU = option yes;
XEN_MCE_LOG = option yes;
XEN_PVH = option yes;
XEN_PVHVM = option yes;
XEN_SAVE_RESTORE = option yes;
XEN_SCRUB_PAGES = option yes;
XEN_SELFBALLOONING = option yes;
XEN_STUB = option yes;
XEN_TMEM = option yes;
});
media = {
MEDIA_DIGITAL_TV_SUPPORT = yes;
MEDIA_CAMERA_SUPPORT = yes;
MEDIA_RC_SUPPORT = whenOlder "4.14" yes;
linux: 4.20-rc7 -> 5.0-rc1
2019-01-07 12:57:32 +00:00
MEDIA_CONTROLLER = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
MEDIA_PCI_SUPPORT = yes;
MEDIA_USB_SUPPORT = yes;
MEDIA_ANALOG_TV_SUPPORT = yes;
VIDEO_STK1160_COMMON = module;
VIDEO_STK1160_AC97 = whenOlder "4.11" yes;
};
"9p" = {
# Enable the 9P cache to speed up NixOS VM tests.
"9P_FSCACHE" = option yes;
"9P_FS_POSIX_ACL" = option yes;
};
huge-page = {
TRANSPARENT_HUGEPAGE = option yes;
TRANSPARENT_HUGEPAGE_ALWAYS = option no;
TRANSPARENT_HUGEPAGE_MADVISE = option yes;
};
zram = {
ZRAM = module;
ZSWAP = option yes;
ZBUD = option yes;
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
ZSMALLOC = module;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
};
brcmfmac = {
# Enable PCIe and USB for the brcmfmac driver
BRCMFMAC_USB = option yes;
BRCMFMAC_PCIE = option yes;
};
# Support x2APIC (which requires IRQ remapping)
reewide: Purge all uses `stdenv.system` and top-level `system` It is deprecated and will be removed after 18.09.
2018-08-20 19:11:29 +00:00
x2apic = optionalAttrs (stdenv.hostPlatform.system == "x86_64-linux") {
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
X86_X2APIC = yes;
IRQ_REMAP = yes;
};
kernel config: Minor text fixes
2018-06-30 11:05:29 +00:00
# Disable various self-test modules that have no use in a production system
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
tests = {
# This menu disables all/most of them on >= 4.16
RUNTIME_TESTING_MENU = option no;
} // optionalAttrs (versionOlder version "4.16") {
kernel config: Minor text fixes
2018-06-30 11:05:29 +00:00
# For older kernels, painstakingly disable each symbol.
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
ARM_KPROBES_TEST = option no;
ASYNC_RAID6_TEST = option no;
ATOMIC64_SELFTEST = option no;
BACKTRACE_SELF_TEST = option no;
INTERVAL_TREE_TEST = option no;
PERCPU_TEST = option no;
RBTREE_TEST = option no;
TEST_BITMAP = option no;
TEST_BPF = option no;
TEST_FIRMWARE = option no;
TEST_HASH = option no;
TEST_HEXDUMP = option no;
TEST_KMOD = option no;
TEST_KSTRTOX = option no;
TEST_LIST_SORT = option no;
TEST_LKM = option no;
TEST_PARMAN = option no;
TEST_PRINTF = option no;
TEST_RHASHTABLE = option no;
TEST_SORT = option no;
TEST_STATIC_KEYS = option no;
TEST_STRING_HELPERS = option no;
TEST_UDELAY = option no;
TEST_USER_COPY = option no;
TEST_UUID = option no;
} // {
CRC32_SELFTEST = option no;
CRYPTO_TEST = option no;
EFI_TEST = option no;
GLOB_SELFTEST = option no;
linux: ability to merge structured configs This should make the composability of kernel configurations more straigthforward. - now distinguish freeform options from tristate ones - will look for a structured config in kernelPatches too one can now access the structuredConfig from a kernel via linux_test.configfile.structuredConfig in order to reinject it into another kernel, no need to rewrite the config from scratch The following merge strategies are used in case of conflict: -- freeform items must be equal or they conflict (mergeEqualOption) -- for tristate (y/m/n) entries, I use the mergeAnswer strategy which takes the best available value, "best" being defined by the user (by default "y" > "m" > "n", e.g. if one entry is both marked "y" and "n", "y" wins) -- if one item is both marked optional/mandatory, mandatory wins (mergeFalseByDefault)
2018-10-03 09:49:50 +00:00
DRM_DEBUG_MM_SELFTEST = { optional = true; tristate = whenOlder "4.18" "n";};
LNET_SELFTEST = { optional = true; tristate = whenOlder "4.18" "n";};
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
LOCK_TORTURE_TEST = option no;
MTD_TESTS = option no;
NOTIFIER_ERROR_INJECTION = option no;
RCU_PERF_TEST = option no;
RCU_TORTURE_TEST = option no;
TEST_ASYNC_DRIVER_PROBE = option no;
WW_MUTEX_SELFTEST = option no;
XZ_DEC_TEST = option no;
kernel/common-config: move criu to its own set It was previously in the "test" set, which seemed an inappropriate placement.
2019-05-08 17:40:39 +00:00
};
criu = optionalAttrs (features.criu or false) ({
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
EXPERT = yes;
CHECKPOINT_RESTORE = yes;
} // optionalAttrs (features.criu_revert_expert or true) {
RFKILL_INPUT = option yes;
HID_PICOLCD_FB = option yes;
HID_PICOLCD_BACKLIGHT = option yes;
HID_PICOLCD_LCD = option yes;
HID_PICOLCD_LEDS = option yes;
HID_PICOLCD_CIR = option yes;
DEBUG_MEMORY_INIT = option yes;
});
misc = {
linux-kernel: HID_BATTERY_STRENGTH=yes
2019-09-05 15:22:13 +00:00
HID_BATTERY_STRENGTH = yes;
linux: CONFIG_HIDRAW=y
2020-05-02 12:06:43 +00:00
# enabled by default in x86_64 but not arm64, so we do that here
HIDRAW = yes;
linux: enable force feedback support in HID drivers
2020-06-11 10:41:59 +00:00
HID_ACRUX_FF = yes;
DRAGONRISE_FF = yes;
HOLTEK_FF = yes;
SONY_FF = yes;
SMARTJOYPLUS_FF = yes;
THRUSTMASTER_FF = yes;
ZEROPLUS_FF = yes;
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
MODULE_COMPRESS = yes;
MODULE_COMPRESS_XZ = yes;
kernel: use zstd compression on 5.9+.
2020-12-12 04:56:33 +00:00
# use zstd for kernel compression if newer than 5.9, else xz.
KERNEL_XZ = whenOlder "5.9" yes;
KERNEL_ZSTD = whenAtLeast "5.9" yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
linux: explicitly enable SYSVIPC The linux-hardened patch set removes this default, probably because of its original focus on Android kernel hardening.
2020-04-05 03:18:36 +00:00
SYSVIPC = yes; # System-V IPC
linux: explicitly enable AIO This is disabled by default in the linux-hardened patchset, but is required by e.g. LVM. Fixes #87260.
2020-05-10 21:34:19 +00:00
AIO = yes; # POSIX asynchronous I/O
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
UNIX = yes; # Unix domain sockets.
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
MD = yes; # Device mapper (RAID, LVM, etc.)
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
# Enable initrd support.
BLK_DEV_RAM = yes;
BLK_DEV_INITRD = yes;
PM_TRACE_RTC = no; # Disable some expensive (?) features.
ACCESSIBILITY = yes; # Accessibility support
AUXDISPLAY = yes; # Auxiliary Display support
DONGLE = whenOlder "4.17" yes; # Serial dongle support
HIPPI = yes;
MTD_COMPLEX_MAPPINGS = yes; # needed for many devices
SCSI_LOWLEVEL = yes; # enable lots of SCSI devices
SCSI_LOWLEVEL_PCMCIA = yes;
SCSI_SAS_ATA = yes; # added to enable detection of hard drive
SPI = yes; # needed for many devices
SPI_MASTER = yes;
"8139TOO_8129" = yes;
"8139TOO_PIO" = no; # PIO is slower
AIC79XX_DEBUG_ENABLE = no;
AIC7XXX_DEBUG_ENABLE = no;
AIC94XX_DEBUG = no;
linux: ability to merge structured configs This should make the composability of kernel configurations more straigthforward. - now distinguish freeform options from tristate ones - will look for a structured config in kernelPatches too one can now access the structuredConfig from a kernel via linux_test.configfile.structuredConfig in order to reinject it into another kernel, no need to rewrite the config from scratch The following merge strategies are used in case of conflict: -- freeform items must be equal or they conflict (mergeEqualOption) -- for tristate (y/m/n) entries, I use the mergeAnswer strategy which takes the best available value, "best" being defined by the user (by default "y" > "m" > "n", e.g. if one entry is both marked "y" and "n", "y" wins) -- if one item is both marked optional/mandatory, mandatory wins (mergeFalseByDefault)
2018-10-03 09:49:50 +00:00
B43_PCMCIA = { optional=true; tristate = whenOlder "4.4" "y";};
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
BLK_DEV_INTEGRITY = yes;
linux: Enable support for Self-Encrypting Drives To quote block/Kconfig: > Builds Logic for interfacing with Opal enabled controllers. > Enabling this option enables users to setup/unlock/lock > Locking ranges for SED devices using the Opal protocol. Without `BLK_SED_OPAL`, it is impossible to resume from sleep when using a locked self-encrypting drive. This configuration option appeared in earlier kernels, but only reached maturity in 4.14 according to discussion at: - https://github.com/Drive-Trust-Alliance/sedutil/issues/90 and - https://github.com/Drive-Trust-Alliance/sedutil/pull/190 This kernel option is enabled in the default kernels shipped with Fedora, Debian, and other mainstream Linux distributions.
2019-02-21 12:05:43 +00:00
BLK_SED_OPAL = whenAtLeast "4.14" yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
BSD_PROCESS_ACCT_V3 = yes;
BT_HCIUART_BCSP = option yes;
BT_HCIUART_H4 = option yes; # UART (H4) protocol support
BT_HCIUART_LL = option yes;
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
BT_RFCOMM_TTY = option yes; # RFCOMM TTY support
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
CLEANCACHE = option yes;
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
CRASH_DUMP = option no;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
DVB_DYNAMIC_MINORS = option yes; # we use udev
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
EFI_STUB = yes; # EFI bootloader in the bzImage itself
CGROUPS = yes; # used by systemd
FHANDLE = yes; # used by systemd
SECCOMP = yes; # used by systemd >= 231
SECCOMP_FILTER = yes; # ditto
POSIX_MQUEUE = yes;
FRONTSWAP = yes;
FUSION = yes; # Fusion MPT device support
IDE = no; # deprecated IDE support
IDLE_PAGE_TRACKING = yes;
IRDA_ULTRA = whenOlder "4.17" yes; # Ultra (connectionless) protocol
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
linux: 5.2-rc7 -> 5.3-rc5
2019-08-20 18:54:37 +00:00
JOYSTICK_IFORCE_232 = { optional = true; tristate = whenOlder "5.3" "y"; }; # I-Force Serial joysticks and wheels
JOYSTICK_IFORCE_USB = { optional = true; tristate = whenOlder "5.3" "y"; }; # I-Force USB joysticks and wheels
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
JOYSTICK_XPAD_FF = option yes; # X-Box gamepad rumble support
JOYSTICK_XPAD_LEDS = option yes; # LED Support for Xbox360 controller 'BigX' LED
linux: Enable KEYBOARD_APPLESPI This is available for 5.3+ and enables support for Apple trackpads and keyboards Closes #71552
2019-10-23 13:03:16 +00:00
KEYBOARD_APPLESPI = whenAtLeast "5.3" module;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
KEXEC_FILE = option yes;
KEXEC_JUMP = option yes;
linux: fix kernel config options Some of the options didn't have correct kernel version constraints, others had been removed or made optional unnecessarily in #84032.
2020-05-26 12:09:20 +00:00
PARTITION_ADVANCED = yes; # Needed for LDM_PARTITION
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
# Windows Logical Disk Manager (Dynamic Disk) support
linux: fix kernel config options Some of the options didn't have correct kernel version constraints, others had been removed or made optional unnecessarily in #84032.
2020-05-26 12:09:20 +00:00
LDM_PARTITION = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
LOGIRUMBLEPAD2_FF = yes; # Logitech Rumblepad 2 force feedback
LOGO = no; # not needed
MEDIA_ATTACH = yes;
MEGARAID_NEWGEN = yes;
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
MLX4_EN_VXLAN = whenOlder "4.8" yes;
kernel: enable MLX5_CORE_EN when possible Hydra's builders from Packet.net use this option a lot, causing lots of slow deploys.
2018-10-30 16:29:37 +00:00
MLX5_CORE_EN = option yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
kernel: enable pressure stall information on 4.20+ Closes #56207. Signed-off-by: Austin Seipp <aseipp@pobox.com>
2019-02-22 17:19:36 +00:00
PSI = whenAtLeast "4.20" yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
MODVERSIONS = whenOlder "4.9" yes;
linux: CONFIG_MOUSE_ELAN_I2C_SMBUS=y Signed-off-by: Anders Kaseorg <andersk@mit.edu>
2020-05-23 02:35:19 +00:00
MOUSE_ELAN_I2C_SMBUS = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
MOUSE_PS2_ELANTECH = yes; # Elantech PS/2 protocol extension
MTRR_SANITIZER = yes;
NET_FC = yes; # Fibre Channel driver support
# GPIO on Intel Bay Trail, for some Chromebook internal eMMC disks
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
PINCTRL_BAYTRAIL = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
# 8 is default. Modern gpt tables on eMMC may go far beyond 8.
linux: ability to merge structured configs This should make the composability of kernel configurations more straigthforward. - now distinguish freeform options from tristate ones - will look for a structured config in kernelPatches too one can now access the structuredConfig from a kernel via linux_test.configfile.structuredConfig in order to reinject it into another kernel, no need to rewrite the config from scratch The following merge strategies are used in case of conflict: -- freeform items must be equal or they conflict (mergeEqualOption) -- for tristate (y/m/n) entries, I use the mergeAnswer strategy which takes the best available value, "best" being defined by the user (by default "y" > "m" > "n", e.g. if one entry is both marked "y" and "n", "y" wins) -- if one item is both marked optional/mandatory, mandatory wins (mergeFalseByDefault)
2018-10-03 09:49:50 +00:00
MMC_BLOCK_MINORS = freeform "32";
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
REGULATOR = yes; # Voltage and Current Regulator Support
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
RC_DEVICES = option yes; # Enable IR devices
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
RT2800USB_RT53XX = yes;
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
RT2800USB_RT55XX = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
SCHED_AUTOGROUP = yes;
CFS_BANDWIDTH = yes;
SCSI_LOGGING = yes; # SCSI logging facility
SERIAL_8250 = yes; # 8250/16550 and compatible serial support
SLIP_COMPRESSED = yes; # CSLIP compressed headers
SLIP_SMART = yes;
HWMON = yes;
THERMAL_HWMON = yes; # Hardware monitoring support
linux: Enable NVME_HWMON This is available for 5.5+ and enables support for NVMe drives temperature reporting
2020-02-03 17:08:45 +00:00
NVME_HWMON = whenAtLeast "5.5" yes; # NVMe drives temperature reporting
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
UEVENT_HELPER = no;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
USERFAULTFD = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
X86_CHECK_BIOS_CORRUPTION = yes;
X86_MCE = yes;
linux: explicitly enable RAS This is needed for EDAC support.
2020-11-24 10:44:22 +00:00
RAS = yes; # Needed for EDAC support
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
# Our initrd init uses shebang scripts, so can't be modular.
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
BINFMT_SCRIPT = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
# For systemd-binfmt
BINFMT_MISC = option yes;
# Disable the firmware helper fallback, udev doesn't implement it any more
FW_LOADER_USER_HELPER_FALLBACK = option no;
kernel: remove conditions based on 3.X kernels The oldest kernel in nixpkgs being 4.4, we get rid of checks for older kernels.
2018-06-22 23:54:44 +00:00
HOTPLUG_PCI_ACPI = yes; # PCI hotplug using ACPI
HOTPLUG_PCI_PCIE = yes; # PCI-Expresscard hotplug support
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
linux: Enable AMD's amdkfd kernel driver in >= 4.20 The amdkfd driver was built (and loaded when support was detected) without explicit configuration in kernels 4.17-4.19, but not in newer kernels.
2019-03-18 02:28:25 +00:00
# Enable AMD's ROCm GPU compute stack
linux: fix kernel config options for i686 Even the default pkgsi686Linux.linux was broken.
2020-06-12 06:52:09 +00:00
HSA_AMD = mkIf stdenv.hostPlatform.is64bit (whenAtLeast "4.20" yes);
ZONE_DEVICE = mkIf stdenv.hostPlatform.is64bit (whenAtLeast "5.3" yes);
linux: fix amdgpu memory mapping with kernel >= 5.3 These configuration options are needed for the ROCm GPU compute stack on kernels >= 5.3.
2019-12-07 16:06:42 +00:00
HMM_MIRROR = whenAtLeast "5.3" yes;
DRM_AMDGPU_USERPTR = whenAtLeast "5.3" yes;
linux: Enable AMD's amdkfd kernel driver in >= 4.20 The amdkfd driver was built (and loaded when support was detected) without explicit configuration in kernels 4.17-4.19, but not in newer kernels.
2019-03-18 02:28:25 +00:00
kernel/common-config: PREEMPT -> PREEMPT_VOLUNTARY
2019-05-08 17:42:24 +00:00
PREEMPT = no;
PREEMPT_VOLUNTARY = yes;
linux: remove deprecated kernel config options Our oldest kernel is 4.4. That's why we can remove configurations that only applies to kernels older than that.
2019-10-14 10:40:35 +00:00
kernel: Enable X86_AMD_PLATFORM_DEVICE This is needed to get the toupad working on my Acer Nitro laptop.
2019-09-08 14:22:27 +00:00
X86_AMD_PLATFORM_DEVICE = yes;
kernel/common-config: PREEMPT -> PREEMPT_VOLUNTARY
2019-05-08 17:42:24 +00:00
linux: avoid memory hotplug support on most platforms It broke i686 build, and it's probably not worth it on others, too. /cc #54095 e63414078a7.
2019-01-19 18:19:28 +00:00
} // optionalAttrs (stdenv.hostPlatform.system == "x86_64-linux" || stdenv.hostPlatform.system == "aarch64-linux") {
linux/kernel: enable automatic cpu hotplug support
2019-07-22 17:22:16 +00:00
# Enable CPU/memory hotplug support
# Allows you to dynamically add & remove CPUs/memory to a VM client running NixOS without requiring a reboot
ACPI_HOTPLUG_CPU = yes;
Enable memory hotplug support
2019-01-16 19:58:08 +00:00
ACPI_HOTPLUG_MEMORY = yes;
MEMORY_HOTPLUG = yes;
MEMORY_HOTREMOVE = yes;
linux/kernel: enable automatic cpu hotplug support
2019-07-22 17:22:16 +00:00
HOTPLUG_CPU = yes;
Enable memory hotplug support
2019-01-16 19:58:08 +00:00
MIGRATION = yes;
SPARSEMEM = yes;
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
# Bump the maximum number of CPUs to support systems like EC2 x1.*
# instances and Xeon Phi.
linux: ability to merge structured configs This should make the composability of kernel configurations more straigthforward. - now distinguish freeform options from tristate ones - will look for a structured config in kernelPatches too one can now access the structuredConfig from a kernel via linux_test.configfile.structuredConfig in order to reinject it into another kernel, no need to rewrite the config from scratch The following merge strategies are used in case of conflict: -- freeform items must be equal or they conflict (mergeEqualOption) -- for tristate (y/m/n) entries, I use the mergeAnswer strategy which takes the best available value, "best" being defined by the user (by default "y" > "m" > "n", e.g. if one entry is both marked "y" and "n", "y" wins) -- if one item is both marked optional/mandatory, mandatory wins (mergeFalseByDefault)
2018-10-03 09:49:50 +00:00
NR_CPUS = freeform "384";
linux: Enables support for the Allwinner Display Engine 2.0
2019-06-11 01:31:20 +00:00
} // optionalAttrs (stdenv.hostPlatform.system == "aarch64-linux") {
# Enables support for the Allwinner Display Engine 2.0
SUN8I_DE2_CCU = whenAtLeast "4.13" yes;
linux: Add CRYPTO_AEGIS128_SIMD for aarch64 See comments: https://github.com/NixOS/nixpkgs/commit/9b67ea9106102d882f53d62890468071900b9647
2019-11-28 14:20:15 +00:00
# See comments on https://github.com/NixOS/nixpkgs/commit/9b67ea9106102d882f53d62890468071900b9647
linux: fix kernel config options Some of the options didn't have correct kernel version constraints, others had been removed or made optional unnecessarily in #84032.
2020-05-26 12:09:20 +00:00
CRYPTO_AEGIS128_SIMD = whenAtLeast "5.4" no;
linux: configure aarch64 contiguous memory allocator via kernel config As per the in-line comment, this is where distros should configure it. Not via kernel command line parameters. As found by looking at the implementation, while exploring the cause of a bug on the Raspberry Pi 4, it was found that `cma=` on the command line parameters will overwrite the values a device tree will have configured for a given platform. With this, the more recent 5.4 vendor kernel boots just fine on the Raspberry Pi 4 using our common configuration.
2020-09-14 03:26:21 +00:00
# Distros should configure the default as a kernel option.
# We previously defined it on the kernel command line as cma=
# The kernel command line will override a platform-specific configuration from its device tree.
# https://github.com/torvalds/linux/blob/856deb866d16e29bd65952e0289066f6078af773/kernel/dma/contiguous.c#L35-L44
CMA_SIZE_MBYTES = freeform "32";
linux: translate config to structured config Instead of using a string to describe kernel config, use a nix attribute set, then converted to a string. - allows to override the config, aka convert 'yes' into 'modules' or vice-versa - while for now merging different configs is still crude (last spec wins), at least there should be only one CONFIG_XYZ value compared to the current string config where the first defined would be used and others ignored. [initial idea by copumpkin in 2016, a major rebase to 2018 by teto]
2016-01-05 14:22:43 +00:00
};
};
linux: ability to merge structured configs This should make the composability of kernel configurations more straigthforward. - now distinguish freeform options from tristate ones - will look for a structured config in kernelPatches too one can now access the structuredConfig from a kernel via linux_test.configfile.structuredConfig in order to reinject it into another kernel, no need to rewrite the config from scratch The following merge strategies are used in case of conflict: -- freeform items must be equal or they conflict (mergeEqualOption) -- for tristate (y/m/n) entries, I use the mergeAnswer strategy which takes the best available value, "best" being defined by the user (by default "y" > "m" > "n", e.g. if one entry is both marked "y" and "n", "y" wins) -- if one item is both marked optional/mandatory, mandatory wins (mergeFalseByDefault)
2018-10-03 09:49:50 +00:00
in
flattenKConf options
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