mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-15 10:12:58 +00:00
8d3fe232e3
CONFIG_NO_HZ_FULL=y should be set to enable the `nohz_full=` and
`rcu_nocbs=` options. These carry no additional performance penalty
compared to CONFIG_NO_HZ_IDLE and behaves like it by default,
but allows disabling the tick interrupts on cores for power or
performance reasons.
[Debian][1] also applied the change to all their kernels.
Like the Kernel says: "If you're a distro say Y."
[1]: f6aad27f05
1010 lines
40 KiB
Nix
1010 lines
40 KiB
Nix
# WARNING/NOTE: whenever you want to add an option here you need to either
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# * mark it as an optional one with `option`,
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# * or make sure it works for all the versions in nixpkgs,
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# * or check for which kernel versions it will work (using kernel
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# changelog, google or whatever) and mark it with `whenOlder` or
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# `whenAtLeast`.
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# Then do test your change by building all the kernels (or at least
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# their configs) in Nixpkgs or else you will guarantee lots and lots
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# of pain to users trying to switch to an older kernel because of some
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# hardware problems with a new one.
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# Configuration
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{ lib, stdenv, version
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, features ? {}
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}:
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with lib;
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with lib.kernel;
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with (lib.kernel.whenHelpers version);
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let
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# configuration items have to be part of a subattrs
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flattenKConf = nested: mapAttrs (_: head) (zipAttrs (attrValues nested));
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whenPlatformHasEBPFJit =
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mkIf (stdenv.hostPlatform.isAarch32 ||
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stdenv.hostPlatform.isAarch64 ||
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stdenv.hostPlatform.isx86_64 ||
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(stdenv.hostPlatform.isPower && stdenv.hostPlatform.is64bit) ||
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(stdenv.hostPlatform.isMips && stdenv.hostPlatform.is64bit));
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options = {
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debug = {
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# Necessary for BTF
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DEBUG_INFO = mkMerge [
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(whenOlder "5.2" (if (features.debug or false) then yes else no))
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(whenBetween "5.2" "5.18" yes)
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];
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DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT = whenAtLeast "5.18" yes;
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# Reduced debug info conflict with BTF and have been enabled in
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# aarch64 defconfig since 5.13
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DEBUG_INFO_REDUCED = whenAtLeast "5.13" (option no);
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DEBUG_INFO_BTF = whenAtLeast "5.2" (option yes);
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# Allow loading modules with mismatched BTFs
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# FIXME: figure out how to actually make BTFs reproducible instead
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# See https://github.com/NixOS/nixpkgs/pull/181456 for details.
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MODULE_ALLOW_BTF_MISMATCH = whenAtLeast "5.18" (option yes);
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BPF_LSM = whenAtLeast "5.7" (option yes);
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DEBUG_KERNEL = yes;
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DEBUG_DEVRES = no;
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DYNAMIC_DEBUG = yes;
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TIMER_STATS = whenOlder "4.11" yes;
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DEBUG_NX_TEST = whenOlder "4.11" no;
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DEBUG_STACK_USAGE = no;
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DEBUG_STACKOVERFLOW = option no;
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RCU_TORTURE_TEST = no;
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SCHEDSTATS = no;
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DETECT_HUNG_TASK = yes;
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CRASH_DUMP = option no;
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# Easier debugging of NFS issues.
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SUNRPC_DEBUG = yes;
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# Provide access to tunables like sched_migration_cost_ns
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SCHED_DEBUG = yes;
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};
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power-management = {
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CPU_FREQ_DEFAULT_GOV_PERFORMANCE = yes;
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CPU_FREQ_GOV_SCHEDUTIL = yes;
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PM_ADVANCED_DEBUG = yes;
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PM_WAKELOCKS = yes;
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POWERCAP = yes;
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} // optionalAttrs (stdenv.hostPlatform.isx86) {
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INTEL_IDLE = yes;
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INTEL_RAPL = whenAtLeast "5.3" module;
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X86_INTEL_LPSS = yes;
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X86_INTEL_PSTATE = yes;
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};
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external-firmware = {
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# Support drivers that need external firmware.
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STANDALONE = no;
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};
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proc-config-gz = {
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# Make /proc/config.gz available
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IKCONFIG = yes;
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IKCONFIG_PROC = yes;
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};
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optimization = {
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# Optimize with -O2, not -Os
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CC_OPTIMIZE_FOR_SIZE = no;
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};
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memtest = {
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MEMTEST = yes;
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};
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# Include the CFQ I/O scheduler in the kernel, rather than as a
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# module, so that the initrd gets a good I/O scheduler.
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scheduler = {
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IOSCHED_CFQ = whenOlder "5.0" yes; # Removed in 5.0-RC1
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BLK_CGROUP = yes; # required by CFQ"
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BLK_CGROUP_IOLATENCY = whenAtLeast "4.19" yes;
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BLK_CGROUP_IOCOST = whenAtLeast "5.4" yes;
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IOSCHED_DEADLINE = whenOlder "5.0" yes; # Removed in 5.0-RC1
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MQ_IOSCHED_DEADLINE = whenAtLeast "4.11" yes;
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BFQ_GROUP_IOSCHED = whenAtLeast "4.12" yes;
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MQ_IOSCHED_KYBER = whenAtLeast "4.12" yes;
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IOSCHED_BFQ = whenAtLeast "4.12" module;
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};
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timer = {
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# Enable Full Dynticks System.
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NO_HZ_FULL = yes;
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};
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# Enable NUMA.
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numa = {
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NUMA = option yes;
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};
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networking = {
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NET = yes;
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IP_ADVANCED_ROUTER = yes;
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IP_PNP = no;
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IP_VS_PROTO_TCP = yes;
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IP_VS_PROTO_UDP = yes;
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IP_VS_PROTO_ESP = yes;
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IP_VS_PROTO_AH = yes;
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IP_VS_IPV6 = yes;
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IP_DCCP_CCID3 = no; # experimental
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CLS_U32_PERF = yes;
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CLS_U32_MARK = yes;
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BPF_JIT = whenPlatformHasEBPFJit yes;
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BPF_JIT_ALWAYS_ON = whenPlatformHasEBPFJit no; # whenPlatformHasEBPFJit yes; # see https://github.com/NixOS/nixpkgs/issues/79304
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HAVE_EBPF_JIT = whenPlatformHasEBPFJit yes;
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BPF_STREAM_PARSER = whenAtLeast "4.19" yes;
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XDP_SOCKETS = whenAtLeast "4.19" yes;
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XDP_SOCKETS_DIAG = whenAtLeast "5.1" yes;
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WAN = yes;
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TCP_CONG_ADVANCED = yes;
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TCP_CONG_CUBIC = yes; # This is the default congestion control algorithm since 2.6.19
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# Required by systemd per-cgroup firewalling
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CGROUP_BPF = option yes;
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CGROUP_NET_PRIO = yes; # Required by systemd
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IP_ROUTE_VERBOSE = yes;
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IP_MROUTE_MULTIPLE_TABLES = yes;
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IP_MULTICAST = yes;
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IP_MULTIPLE_TABLES = yes;
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IPV6 = yes;
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IPV6_ROUTER_PREF = yes;
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IPV6_ROUTE_INFO = yes;
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IPV6_OPTIMISTIC_DAD = yes;
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IPV6_MULTIPLE_TABLES = yes;
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IPV6_SUBTREES = yes;
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IPV6_MROUTE = yes;
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IPV6_MROUTE_MULTIPLE_TABLES = yes;
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IPV6_PIMSM_V2 = yes;
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IPV6_FOU_TUNNEL = module;
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IPV6_SEG6_LWTUNNEL = whenAtLeast "4.10" yes;
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IPV6_SEG6_HMAC = whenAtLeast "4.10" yes;
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IPV6_SEG6_BPF = whenAtLeast "4.18" yes;
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NET_CLS_BPF = module;
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NET_ACT_BPF = module;
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NET_SCHED = yes;
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L2TP_V3 = yes;
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L2TP_IP = module;
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L2TP_ETH = module;
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BRIDGE_VLAN_FILTERING = yes;
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BONDING = module;
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NET_L3_MASTER_DEV = option yes;
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NET_FOU_IP_TUNNELS = option yes;
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IP_NF_TARGET_REDIRECT = module;
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PPP_MULTILINK = yes; # PPP multilink support
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PPP_FILTER = yes;
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# needed for iwd WPS support (wpa_supplicant replacement)
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KEY_DH_OPERATIONS = yes;
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# needed for nftables
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# Networking Options
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NETFILTER = yes;
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NETFILTER_ADVANCED = yes;
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# Core Netfilter Configuration
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NF_CONNTRACK_ZONES = yes;
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NF_CONNTRACK_EVENTS = yes;
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NF_CONNTRACK_TIMEOUT = yes;
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NF_CONNTRACK_TIMESTAMP = yes;
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NETFILTER_NETLINK_GLUE_CT = yes;
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NF_TABLES_INET = mkMerge [ (whenOlder "4.17" module)
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(whenAtLeast "4.17" yes) ];
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NF_TABLES_NETDEV = mkMerge [ (whenOlder "4.17" module)
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(whenAtLeast "4.17" yes) ];
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NFT_REJECT_NETDEV = whenAtLeast "5.11" module;
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# IP: Netfilter Configuration
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NF_TABLES_IPV4 = mkMerge [ (whenOlder "4.17" module)
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(whenAtLeast "4.17" yes) ];
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NF_TABLES_ARP = mkMerge [ (whenOlder "4.17" module)
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(whenAtLeast "4.17" yes) ];
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# IPv6: Netfilter Configuration
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NF_TABLES_IPV6 = mkMerge [ (whenOlder "4.17" module)
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(whenAtLeast "4.17" yes) ];
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# Bridge Netfilter Configuration
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NF_TABLES_BRIDGE = mkMerge [ (whenBetween "4.19" "5.3" yes)
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(whenAtLeast "5.3" module) ];
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# needed for `dropwatch`
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# Builtin-only since https://github.com/torvalds/linux/commit/f4b6bcc7002f0e3a3428bac33cf1945abff95450
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NET_DROP_MONITOR = yes;
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# needed for ss
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# Use a lower priority to allow these options to be overridden in hardened/config.nix
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INET_DIAG = mkDefault module;
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INET_TCP_DIAG = mkDefault module;
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INET_UDP_DIAG = mkDefault module;
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INET_RAW_DIAG = whenAtLeast "4.14" (mkDefault module);
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INET_DIAG_DESTROY = mkDefault yes;
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# enable multipath-tcp
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MPTCP = whenAtLeast "5.6" yes;
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MPTCP_IPV6 = whenAtLeast "5.6" yes;
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INET_MPTCP_DIAG = whenAtLeast "5.9" (mkDefault module);
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# Kernel TLS
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TLS = whenAtLeast "4.13" module;
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TLS_DEVICE = whenAtLeast "4.18" yes;
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# infiniband
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INFINIBAND = module;
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INFINIBAND_IPOIB = module;
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INFINIBAND_IPOIB_CM = yes;
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};
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wireless = {
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CFG80211_WEXT = option yes; # Without it, ipw2200 drivers don't build
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IPW2100_MONITOR = option yes; # support promiscuous mode
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IPW2200_MONITOR = option yes; # support promiscuous mode
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HOSTAP_FIRMWARE = option yes; # Support downloading firmware images with Host AP driver
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HOSTAP_FIRMWARE_NVRAM = option yes;
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ATH9K_PCI = option yes; # Detect Atheros AR9xxx cards on PCI(e) bus
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ATH9K_AHB = option yes; # Ditto, AHB bus
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B43_PHY_HT = option yes;
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BCMA_HOST_PCI = option yes;
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RTW88 = whenAtLeast "5.2" module;
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RTW88_8822BE = mkMerge [ (whenBetween "5.2" "5.8" yes) (whenAtLeast "5.8" module) ];
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RTW88_8822CE = mkMerge [ (whenBetween "5.2" "5.8" yes) (whenAtLeast "5.8" module) ];
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};
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fb = {
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FB = yes;
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FB_EFI = yes;
|
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FB_NVIDIA_I2C = yes; # Enable DDC Support
|
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FB_RIVA_I2C = yes;
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FB_ATY_CT = yes; # Mach64 CT/VT/GT/LT (incl. 3D RAGE) support
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FB_ATY_GX = yes; # Mach64 GX support
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FB_SAVAGE_I2C = yes;
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FB_SAVAGE_ACCEL = yes;
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FB_SIS_300 = yes;
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FB_SIS_315 = yes;
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FB_3DFX_ACCEL = yes;
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FB_VESA = yes;
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FRAMEBUFFER_CONSOLE = yes;
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||
FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER = whenAtLeast "4.19" yes;
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FRAMEBUFFER_CONSOLE_ROTATION = yes;
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||
FB_GEODE = mkIf (stdenv.hostPlatform.system == "i686-linux") yes;
|
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# On 5.14 this conflicts with FB_SIMPLE.
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DRM_SIMPLEDRM = whenAtLeast "5.14" no;
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||
};
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video = {
|
||
DRM_LEGACY = no;
|
||
NOUVEAU_LEGACY_CTX_SUPPORT = whenAtLeast "5.2" no;
|
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|
||
# Allow specifying custom EDID on the kernel command line
|
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DRM_LOAD_EDID_FIRMWARE = yes;
|
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VGA_SWITCHEROO = yes; # Hybrid graphics support
|
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DRM_GMA500 = whenAtLeast "5.12" module;
|
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DRM_GMA600 = whenOlder "5.13" yes;
|
||
DRM_GMA3600 = whenOlder "5.12" yes;
|
||
DRM_VMWGFX_FBCON = yes;
|
||
# (experimental) amdgpu support for verde and newer chipsets
|
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DRM_AMDGPU_SI = yes;
|
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# (stable) amdgpu support for bonaire and newer chipsets
|
||
DRM_AMDGPU_CIK = yes;
|
||
# Allow device firmware updates
|
||
DRM_DP_AUX_CHARDEV = yes;
|
||
# amdgpu display core (DC) support
|
||
DRM_AMD_DC_DCN1_0 = whenBetween "4.15" "5.6" yes;
|
||
DRM_AMD_DC_PRE_VEGA = whenBetween "4.15" "4.18" yes;
|
||
DRM_AMD_DC_DCN2_0 = whenBetween "5.3" "5.6" yes;
|
||
DRM_AMD_DC_DCN2_1 = whenBetween "5.4" "5.6" yes;
|
||
DRM_AMD_DC_DCN3_0 = whenBetween "5.9" "5.11" yes;
|
||
DRM_AMD_DC_DCN = whenAtLeast "5.11" yes;
|
||
DRM_AMD_DC_HDCP = whenAtLeast "5.5" yes;
|
||
DRM_AMD_DC_SI = whenAtLeast "5.10" yes;
|
||
} // optionalAttrs (stdenv.hostPlatform.system == "x86_64-linux") {
|
||
# Intel GVT-g graphics virtualization supports 64-bit only
|
||
DRM_I915_GVT = whenAtLeast "4.16" yes;
|
||
DRM_I915_GVT_KVMGT = whenAtLeast "4.16" module;
|
||
} // optionalAttrs (stdenv.hostPlatform.system == "aarch64-linux") {
|
||
# enable HDMI-CEC on RPi boards
|
||
DRM_VC4_HDMI_CEC = whenAtLeast "4.14" yes;
|
||
};
|
||
|
||
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;
|
||
SND_HDA_CODEC_CA0132_DSP = whenOlder "5.7" yes; # Enable DSP firmware loading on Creative Soundblaster Z/Zx/ZxR/Recon
|
||
SND_OSSEMUL = yes;
|
||
SND_USB_CAIAQ_INPUT = yes;
|
||
# Enable PSS mixer (Beethoven ADSP-16 and other compatible)
|
||
PSS_MIXER = whenOlder "4.12" yes;
|
||
# Enable Sound Open Firmware support
|
||
} // optionalAttrs (stdenv.hostPlatform.system == "x86_64-linux" &&
|
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versionAtLeast version "5.5") {
|
||
SND_SOC_INTEL_SOUNDWIRE_SOF_MACH = whenAtLeast "5.10" module;
|
||
SND_SOC_INTEL_USER_FRIENDLY_LONG_NAMES = whenAtLeast "5.10" yes; # dep of SOF_MACH
|
||
SND_SOC_SOF_INTEL_SOUNDWIRE_LINK = whenBetween "5.10" "5.11" yes; # dep of SOF_MACH
|
||
SND_SOC_SOF_TOPLEVEL = yes;
|
||
SND_SOC_SOF_ACPI = module;
|
||
SND_SOC_SOF_PCI = module;
|
||
SND_SOC_SOF_APOLLOLAKE = whenAtLeast "5.12" module;
|
||
SND_SOC_SOF_APOLLOLAKE_SUPPORT = whenOlder "5.12" yes;
|
||
SND_SOC_SOF_CANNONLAKE = whenAtLeast "5.12" module;
|
||
SND_SOC_SOF_CANNONLAKE_SUPPORT = whenOlder "5.12" yes;
|
||
SND_SOC_SOF_COFFEELAKE = whenAtLeast "5.12" module;
|
||
SND_SOC_SOF_COFFEELAKE_SUPPORT = whenOlder "5.12" yes;
|
||
SND_SOC_SOF_COMETLAKE = whenAtLeast "5.12" module;
|
||
SND_SOC_SOF_COMETLAKE_H_SUPPORT = whenOlder "5.8" yes;
|
||
SND_SOC_SOF_COMETLAKE_LP_SUPPORT = whenOlder "5.12" yes;
|
||
SND_SOC_SOF_ELKHARTLAKE = whenAtLeast "5.12" module;
|
||
SND_SOC_SOF_ELKHARTLAKE_SUPPORT = whenOlder "5.12" yes;
|
||
SND_SOC_SOF_GEMINILAKE = whenAtLeast "5.12" module;
|
||
SND_SOC_SOF_GEMINILAKE_SUPPORT = whenOlder "5.12" yes;
|
||
SND_SOC_SOF_HDA_AUDIO_CODEC = yes;
|
||
SND_SOC_SOF_HDA_COMMON_HDMI_CODEC = whenOlder "5.7" yes;
|
||
SND_SOC_SOF_HDA_LINK = yes;
|
||
SND_SOC_SOF_ICELAKE = whenAtLeast "5.12" module;
|
||
SND_SOC_SOF_ICELAKE_SUPPORT = whenOlder "5.12" yes;
|
||
SND_SOC_SOF_INTEL_TOPLEVEL = yes;
|
||
SND_SOC_SOF_JASPERLAKE = whenAtLeast "5.12" module;
|
||
SND_SOC_SOF_JASPERLAKE_SUPPORT = whenOlder "5.12" yes;
|
||
SND_SOC_SOF_MERRIFIELD = whenAtLeast "5.12" module;
|
||
SND_SOC_SOF_MERRIFIELD_SUPPORT = whenOlder "5.12" yes;
|
||
SND_SOC_SOF_TIGERLAKE = whenAtLeast "5.12" module;
|
||
SND_SOC_SOF_TIGERLAKE_SUPPORT = whenOlder "5.12" yes;
|
||
};
|
||
|
||
usb-serial = {
|
||
USB_SERIAL_GENERIC = yes; # USB Generic Serial Driver
|
||
} // optionalAttrs (versionOlder version "4.16") {
|
||
# Include firmware for various USB serial devices.
|
||
# Only applicable for kernels below 4.16, after that no firmware is shipped in the kernel tree.
|
||
USB_SERIAL_KEYSPAN_MPR = yes;
|
||
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 = {
|
||
USB_DEBUG = { optional = true; tristate = whenOlder "4.18" "n";};
|
||
USB_EHCI_ROOT_HUB_TT = yes; # Root Hub Transaction Translators
|
||
USB_EHCI_TT_NEWSCHED = yes; # Improved transaction translator scheduling
|
||
USB_HIDDEV = yes; # USB Raw HID Devices (like monitor controls and Uninterruptable Power Supplies)
|
||
};
|
||
|
||
# Filesystem options - in particular, enable extended attributes and
|
||
# ACLs for all filesystems that support them.
|
||
filesystem = {
|
||
FANOTIFY = yes;
|
||
TMPFS = yes;
|
||
TMPFS_POSIX_ACL = yes;
|
||
FS_ENCRYPTION = if (versionAtLeast version "5.1") then yes else whenAtLeast "4.9" (option module);
|
||
|
||
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;
|
||
EXT4_ENCRYPTION = option yes;
|
||
|
||
NTFS_FS = whenAtLeast "5.15" no;
|
||
NTFS3_LZX_XPRESS = whenAtLeast "5.15" yes;
|
||
NTFS3_FS_POSIX_ACL = whenAtLeast "5.15" yes;
|
||
|
||
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
|
||
XFS_ONLINE_SCRUB = option yes;
|
||
|
||
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;
|
||
F2FS_FS_COMPRESSION = whenAtLeast "5.6" yes;
|
||
UDF_FS = module;
|
||
|
||
NFSD_V2_ACL = yes;
|
||
NFSD_V3 = whenOlder "5.18" yes;
|
||
NFSD_V3_ACL = yes;
|
||
NFSD_V4 = yes;
|
||
NFSD_V4_SECURITY_LABEL = yes;
|
||
|
||
NFS_FSCACHE = yes;
|
||
NFS_SWAP = yes;
|
||
NFS_V3_ACL = yes;
|
||
NFS_V4_1 = yes; # NFSv4.1 client support
|
||
NFS_V4_2 = yes;
|
||
NFS_V4_SECURITY_LABEL = yes;
|
||
|
||
CIFS_XATTR = yes;
|
||
CIFS_POSIX = option yes;
|
||
CIFS_FSCACHE = yes;
|
||
CIFS_STATS = whenOlder "4.19" yes;
|
||
CIFS_WEAK_PW_HASH = whenOlder "5.15" yes;
|
||
CIFS_UPCALL = yes;
|
||
CIFS_ACL = whenOlder "5.3" yes;
|
||
CIFS_DFS_UPCALL = yes;
|
||
CIFS_SMB2 = whenOlder "4.13" yes;
|
||
|
||
CEPH_FSCACHE = yes;
|
||
CEPH_FS_POSIX_ACL = yes;
|
||
|
||
SQUASHFS_FILE_DIRECT = yes;
|
||
SQUASHFS_DECOMP_MULTI_PERCPU = yes;
|
||
SQUASHFS_XATTR = yes;
|
||
SQUASHFS_ZLIB = yes;
|
||
SQUASHFS_LZO = yes;
|
||
SQUASHFS_XZ = yes;
|
||
SQUASHFS_LZ4 = yes;
|
||
SQUASHFS_ZSTD = whenAtLeast "4.14" yes;
|
||
|
||
# Native Language Support modules, needed by some filesystems
|
||
NLS = yes;
|
||
NLS_DEFAULT = freeform "utf8";
|
||
NLS_UTF8 = module;
|
||
NLS_CODEPAGE_437 = module; # VFAT default for the codepage= mount option
|
||
NLS_ISO8859_1 = module; # VFAT default for the iocharset= mount option
|
||
|
||
# Needed to use the installation iso image. Not included in all defconfigs (e.g. arm64)
|
||
ISO9660_FS = module;
|
||
|
||
DEVTMPFS = yes;
|
||
|
||
UNICODE = whenAtLeast "5.2" yes; # Casefolding support for filesystems
|
||
};
|
||
|
||
security = {
|
||
FORTIFY_SOURCE = whenAtLeast "4.13" (option yes);
|
||
|
||
# https://googleprojectzero.blogspot.com/2019/11/bad-binder-android-in-wild-exploit.html
|
||
DEBUG_LIST = yes;
|
||
# Detect writes to read-only module pages
|
||
DEBUG_SET_MODULE_RONX = whenOlder "4.11" (option yes);
|
||
HARDENED_USERCOPY = yes;
|
||
RANDOMIZE_BASE = option yes;
|
||
STRICT_DEVMEM = mkDefault yes; # Filter access to /dev/mem
|
||
IO_STRICT_DEVMEM = mkDefault yes;
|
||
SECURITY_SELINUX_BOOTPARAM_VALUE = whenOlder "5.1" (freeform "0"); # Disable SELinux by default
|
||
# Prevent processes from ptracing non-children processes
|
||
SECURITY_YAMA = option yes;
|
||
# The goal of Landlock is to enable to restrict ambient rights (e.g. global filesystem access) for a set of processes.
|
||
# This does not have any effect if a program does not support it
|
||
SECURITY_LANDLOCK = whenAtLeast "5.13" yes;
|
||
DEVKMEM = whenOlder "5.13" no; # Disable /dev/kmem
|
||
|
||
USER_NS = yes; # Support for user namespaces
|
||
|
||
SECURITY_APPARMOR = yes;
|
||
DEFAULT_SECURITY_APPARMOR = yes;
|
||
|
||
RANDOM_TRUST_CPU = whenAtLeast "4.19" yes; # allow RDRAND to seed the RNG
|
||
RANDOM_TRUST_BOOTLOADER = whenAtLeast "5.4" yes; # allow the bootloader to seed the RNG
|
||
|
||
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.
|
||
SECURITY_LOCKDOWN_LSM = option no;
|
||
|
||
# provides a register of persistent per-UID keyrings, useful for encrypting storage pools in stratis
|
||
PERSISTENT_KEYRINGS = yes;
|
||
# enable temporary caching of the last request_key() result
|
||
KEYS_REQUEST_CACHE = whenAtLeast "5.3" yes;
|
||
} // optionalAttrs (!stdenv.hostPlatform.isAarch32) {
|
||
|
||
# Detect buffer overflows on the stack
|
||
CC_STACKPROTECTOR_REGULAR = {optional = true; tristate = whenOlder "4.18" "y";};
|
||
} // optionalAttrs stdenv.hostPlatform.isx86_64 {
|
||
# Enable Intel SGX
|
||
X86_SGX = whenAtLeast "5.11" yes;
|
||
# Allow KVM guests to load SGX enclaves
|
||
X86_SGX_KVM = whenAtLeast "5.13" yes;
|
||
};
|
||
|
||
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;
|
||
BLK_WBT_SQ = whenOlder "5.0" yes; # Removed in 5.0-RC1
|
||
BLK_WBT_MQ = yes;
|
||
};
|
||
|
||
container = {
|
||
NAMESPACES = yes; # Required by 'unshare' used by 'nixos-install'
|
||
RT_GROUP_SCHED = no;
|
||
CGROUP_DEVICE = yes;
|
||
CGROUP_HUGETLB = yes;
|
||
CGROUP_PERF = yes;
|
||
CGROUP_RDMA = whenAtLeast "4.11" yes;
|
||
|
||
MEMCG = yes;
|
||
MEMCG_SWAP = yes;
|
||
|
||
BLK_DEV_THROTTLING = yes;
|
||
CFQ_GROUP_IOSCHED = whenOlder "5.0" yes; # Removed in 5.0-RC1
|
||
CGROUP_PIDS = 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;
|
||
UPROBE_EVENT = { optional = true; tristate = whenOlder "4.11" "y";};
|
||
UPROBE_EVENTS = { optional = true; tristate = whenAtLeast "4.11" "y";};
|
||
BPF_SYSCALL = yes;
|
||
BPF_UNPRIV_DEFAULT_OFF = whenBetween "5.10" "5.16" yes;
|
||
BPF_EVENTS = yes;
|
||
FUNCTION_PROFILER = yes;
|
||
RING_BUFFER_BENCHMARK = no;
|
||
};
|
||
|
||
virtualisation = {
|
||
PARAVIRT = option yes;
|
||
|
||
HYPERVISOR_GUEST = yes;
|
||
PARAVIRT_SPINLOCKS = option yes;
|
||
|
||
KVM_ASYNC_PF = yes;
|
||
KVM_COMPAT = whenOlder "4.12" (option yes);
|
||
KVM_DEVICE_ASSIGNMENT = whenOlder "4.12" (option yes);
|
||
KVM_GENERIC_DIRTYLOG_READ_PROTECT = yes;
|
||
KVM_GUEST = yes;
|
||
KVM_MMIO = yes;
|
||
KVM_VFIO = yes;
|
||
KSM = yes;
|
||
VIRT_DRIVERS = yes;
|
||
# We need 64 GB (PAE) support for Xen guest support
|
||
HIGHMEM64G = { optional = true; tristate = mkIf (!stdenv.is64bit) "y";};
|
||
|
||
VFIO_PCI_VGA = mkIf stdenv.is64bit yes;
|
||
|
||
# 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;
|
||
|
||
XEN = option yes;
|
||
XEN_DOM0 = option yes;
|
||
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;
|
||
MEDIA_CONTROLLER = yes;
|
||
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;
|
||
ZSMALLOC = module;
|
||
};
|
||
|
||
brcmfmac = {
|
||
# Enable PCIe and USB for the brcmfmac driver
|
||
BRCMFMAC_USB = option yes;
|
||
BRCMFMAC_PCIE = option yes;
|
||
};
|
||
|
||
# Support x2APIC (which requires IRQ remapping)
|
||
x2apic = optionalAttrs (stdenv.hostPlatform.system == "x86_64-linux") {
|
||
X86_X2APIC = yes;
|
||
IRQ_REMAP = yes;
|
||
};
|
||
|
||
# Disable various self-test modules that have no use in a production system
|
||
tests = {
|
||
# This menu disables all/most of them on >= 4.16
|
||
RUNTIME_TESTING_MENU = option no;
|
||
} // optionalAttrs (versionOlder version "4.16") {
|
||
# For older kernels, painstakingly disable each symbol.
|
||
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;
|
||
DRM_DEBUG_MM_SELFTEST = { optional = true; tristate = whenOlder "4.18" "n";};
|
||
LNET_SELFTEST = { optional = true; tristate = whenOlder "4.18" "n";};
|
||
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;
|
||
};
|
||
|
||
criu = if (versionAtLeast version "4.19") then {
|
||
# Unconditionally enabled, because it is required for CRIU and
|
||
# it provides the kcmp() system call that Mesa depends on.
|
||
CHECKPOINT_RESTORE = yes;
|
||
} else optionalAttrs (features.criu or false) ({
|
||
# For older kernels, CHECKPOINT_RESTORE is hidden behind EXPERT.
|
||
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 = let
|
||
# Use zstd for kernel compression if 64-bit and newer than 5.9, otherwise xz.
|
||
# i686 issues: https://github.com/NixOS/nixpkgs/pull/117961#issuecomment-812106375
|
||
useZstd = stdenv.buildPlatform.is64bit && versionAtLeast version "5.9";
|
||
in {
|
||
KERNEL_XZ = mkIf (!useZstd) yes;
|
||
KERNEL_ZSTD = mkIf useZstd yes;
|
||
|
||
HID_BATTERY_STRENGTH = yes;
|
||
# enabled by default in x86_64 but not arm64, so we do that here
|
||
HIDRAW = yes;
|
||
|
||
HID_ACRUX_FF = yes;
|
||
DRAGONRISE_FF = yes;
|
||
GREENASIA_FF = yes;
|
||
HOLTEK_FF = yes;
|
||
JOYSTICK_PSXPAD_SPI_FF = whenAtLeast "4.14" yes;
|
||
LOGIG940_FF = yes;
|
||
NINTENDO_FF = whenAtLeast "5.16" yes;
|
||
PLAYSTATION_FF = whenAtLeast "5.12" yes;
|
||
SONY_FF = yes;
|
||
SMARTJOYPLUS_FF = yes;
|
||
THRUSTMASTER_FF = yes;
|
||
ZEROPLUS_FF = yes;
|
||
|
||
MODULE_COMPRESS = whenOlder "5.13" yes;
|
||
MODULE_COMPRESS_XZ = yes;
|
||
|
||
SYSVIPC = yes; # System-V IPC
|
||
|
||
AIO = yes; # POSIX asynchronous I/O
|
||
|
||
UNIX = yes; # Unix domain sockets.
|
||
|
||
MD = yes; # Device mapper (RAID, LVM, etc.)
|
||
|
||
# Enable initrd support.
|
||
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;
|
||
|
||
BLK_DEV_INTEGRITY = yes;
|
||
|
||
BLK_SED_OPAL = whenAtLeast "4.14" yes;
|
||
|
||
BSD_PROCESS_ACCT_V3 = yes;
|
||
|
||
SERIAL_DEV_BUS = whenAtLeast "4.11" yes; # enables support for serial devices
|
||
SERIAL_DEV_CTRL_TTYPORT = whenAtLeast "4.11" yes; # enables support for TTY serial devices
|
||
|
||
BT_HCIBTUSB_MTK = whenAtLeast "5.3" yes; # MediaTek protocol support
|
||
BT_HCIUART_QCA = yes; # Qualcomm Atheros protocol support
|
||
BT_HCIUART_SERDEV = whenAtLeast "4.12" yes; # required by BT_HCIUART_QCA
|
||
BT_HCIUART = module; # required for BT devices with serial port interface (QCA6390)
|
||
BT_HCIUART_BCSP = option yes;
|
||
BT_HCIUART_H4 = option yes; # UART (H4) protocol support
|
||
BT_HCIUART_LL = option yes;
|
||
BT_RFCOMM_TTY = option yes; # RFCOMM TTY support
|
||
BT_QCA = module; # enables QCA6390 bluetooth
|
||
|
||
# Removed on 5.17 as it was unused
|
||
# upstream: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0a4ee518185e902758191d968600399f3bc2be31
|
||
CLEANCACHE = whenOlder "5.17" (option yes);
|
||
CRASH_DUMP = option no;
|
||
|
||
DVB_DYNAMIC_MINORS = option yes; # we use udev
|
||
|
||
EFI_STUB = yes; # EFI bootloader in the bzImage itself
|
||
EFI_GENERIC_STUB_INITRD_CMDLINE_LOADER =
|
||
whenAtLeast "5.8" yes; # initrd kernel parameter for EFI
|
||
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 = whenOlder "5.14" no; # deprecated IDE support, removed in 5.14
|
||
IDLE_PAGE_TRACKING = yes;
|
||
IRDA_ULTRA = whenOlder "4.17" yes; # Ultra (connectionless) protocol
|
||
|
||
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
|
||
JOYSTICK_XPAD_FF = option yes; # X-Box gamepad rumble support
|
||
JOYSTICK_XPAD_LEDS = option yes; # LED Support for Xbox360 controller 'BigX' LED
|
||
|
||
KEYBOARD_APPLESPI = whenAtLeast "5.3" module;
|
||
|
||
KEXEC_FILE = option yes;
|
||
KEXEC_JUMP = option yes;
|
||
|
||
PARTITION_ADVANCED = yes; # Needed for LDM_PARTITION
|
||
# Windows Logical Disk Manager (Dynamic Disk) support
|
||
LDM_PARTITION = yes;
|
||
LOGIRUMBLEPAD2_FF = yes; # Logitech Rumblepad 2 force feedback
|
||
LOGO = no; # not needed
|
||
MEDIA_ATTACH = yes;
|
||
MEGARAID_NEWGEN = yes;
|
||
|
||
MLX5_CORE_EN = option yes;
|
||
|
||
NVME_MULTIPATH = whenAtLeast "4.15" yes;
|
||
|
||
PSI = whenAtLeast "4.20" yes;
|
||
|
||
MOUSE_ELAN_I2C_SMBUS = yes;
|
||
MOUSE_PS2_ELANTECH = yes; # Elantech PS/2 protocol extension
|
||
MOUSE_PS2_VMMOUSE = yes;
|
||
MTRR_SANITIZER = yes;
|
||
NET_FC = yes; # Fibre Channel driver support
|
||
# Needed for touchpads to work on some AMD laptops
|
||
PINCTRL_AMD = whenAtLeast "5.19" yes;
|
||
# GPIO on Intel Bay Trail, for some Chromebook internal eMMC disks
|
||
PINCTRL_BAYTRAIL = yes;
|
||
# GPIO for Braswell and Cherryview devices
|
||
# Needs to be built-in to for integrated keyboards to function properly
|
||
PINCTRL_CHERRYVIEW = yes;
|
||
# 8 is default. Modern gpt tables on eMMC may go far beyond 8.
|
||
MMC_BLOCK_MINORS = freeform "32";
|
||
|
||
REGULATOR = yes; # Voltage and Current Regulator Support
|
||
RC_DEVICES = option yes; # Enable IR devices
|
||
|
||
RT2800USB_RT53XX = yes;
|
||
RT2800USB_RT55XX = yes;
|
||
|
||
SCHED_AUTOGROUP = yes;
|
||
CFS_BANDWIDTH = yes;
|
||
|
||
SCSI_LOGGING = yes; # SCSI logging facility
|
||
SERIAL_8250 = yes; # 8250/16550 and compatible serial support
|
||
|
||
SLAB_FREELIST_HARDENED = whenAtLeast "4.14" yes;
|
||
SLAB_FREELIST_RANDOM = whenAtLeast "4.10" yes;
|
||
|
||
SLIP_COMPRESSED = yes; # CSLIP compressed headers
|
||
SLIP_SMART = yes;
|
||
|
||
HWMON = yes;
|
||
THERMAL_HWMON = yes; # Hardware monitoring support
|
||
NVME_HWMON = whenAtLeast "5.5" yes; # NVMe drives temperature reporting
|
||
UEVENT_HELPER = no;
|
||
|
||
USERFAULTFD = yes;
|
||
X86_CHECK_BIOS_CORRUPTION = yes;
|
||
X86_MCE = yes;
|
||
|
||
RAS = yes; # Needed for EDAC support
|
||
|
||
# Our initrd init uses shebang scripts, so can't be modular.
|
||
BINFMT_SCRIPT = yes;
|
||
# 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;
|
||
|
||
FW_LOADER_COMPRESS = option yes;
|
||
|
||
HOTPLUG_PCI_ACPI = yes; # PCI hotplug using ACPI
|
||
HOTPLUG_PCI_PCIE = yes; # PCI-Expresscard hotplug support
|
||
|
||
# Enable AMD's ROCm GPU compute stack
|
||
HSA_AMD = mkIf stdenv.hostPlatform.is64bit (whenAtLeast "4.20" yes);
|
||
ZONE_DEVICE = mkIf stdenv.hostPlatform.is64bit (whenAtLeast "5.3" yes);
|
||
HMM_MIRROR = whenAtLeast "5.3" yes;
|
||
DRM_AMDGPU_USERPTR = whenAtLeast "5.3" yes;
|
||
|
||
PREEMPT = no;
|
||
PREEMPT_VOLUNTARY = yes;
|
||
|
||
X86_AMD_PLATFORM_DEVICE = yes;
|
||
X86_PLATFORM_DRIVERS_DELL = whenAtLeast "5.12" yes;
|
||
|
||
LIRC = mkMerge [ (whenOlder "4.16" module) (whenAtLeast "4.17" yes) ];
|
||
|
||
SCHED_CORE = whenAtLeast "5.14" yes;
|
||
|
||
FSL_MC_UAPI_SUPPORT = mkIf (stdenv.hostPlatform.system == "aarch64-linux") (whenAtLeast "5.12" yes);
|
||
|
||
ASHMEM = { optional = true; tristate = whenBetween "5.0" "5.18" "y";};
|
||
ANDROID = { optional = true; tristate = whenAtLeast "5.0" "y";};
|
||
ANDROID_BINDER_IPC = { optional = true; tristate = whenAtLeast "5.0" "y";};
|
||
ANDROID_BINDERFS = { optional = true; tristate = whenAtLeast "5.0" "y";};
|
||
ANDROID_BINDER_DEVICES = { optional = true; freeform = whenAtLeast "5.0" "binder,hwbinder,vndbinder";};
|
||
|
||
TASKSTATS = yes;
|
||
TASK_DELAY_ACCT = yes;
|
||
TASK_XACCT = yes;
|
||
TASK_IO_ACCOUNTING = yes;
|
||
|
||
# Fresh toolchains frequently break -Werror build for minor issues.
|
||
WERROR = whenAtLeast "5.15" no;
|
||
} // optionalAttrs (stdenv.hostPlatform.system == "x86_64-linux" || stdenv.hostPlatform.system == "aarch64-linux") {
|
||
# 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;
|
||
ACPI_HOTPLUG_MEMORY = yes;
|
||
MEMORY_HOTPLUG = yes;
|
||
MEMORY_HOTREMOVE = yes;
|
||
HOTPLUG_CPU = yes;
|
||
MIGRATION = yes;
|
||
SPARSEMEM = yes;
|
||
|
||
# Bump the maximum number of CPUs to support systems like EC2 x1.*
|
||
# instances and Xeon Phi.
|
||
NR_CPUS = freeform "384";
|
||
} // optionalAttrs (stdenv.hostPlatform.system == "armv7l-linux" || stdenv.hostPlatform.system == "aarch64-linux") {
|
||
# Enables support for the Allwinner Display Engine 2.0
|
||
SUN8I_DE2_CCU = whenAtLeast "4.13" yes;
|
||
|
||
# See comments on https://github.com/NixOS/nixpkgs/commit/9b67ea9106102d882f53d62890468071900b9647
|
||
CRYPTO_AEGIS128_SIMD = whenAtLeast "5.4" no;
|
||
|
||
# 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";
|
||
|
||
# Many ARM SBCs hand off a pre-configured framebuffer.
|
||
# This always can can be replaced by the actual native driver.
|
||
# Keeping it a built-in ensures it will be used if possible.
|
||
FB_SIMPLE = yes;
|
||
|
||
} // optionalAttrs (versionAtLeast version "5.4" && (stdenv.hostPlatform.system == "x86_64-linux" || stdenv.hostPlatform.system == "aarch64-linux")) {
|
||
# Required for various hardware features on Chrome OS devices
|
||
CHROME_PLATFORMS = yes;
|
||
CHROMEOS_TBMC = module;
|
||
|
||
CROS_EC = module;
|
||
|
||
CROS_EC_I2C = module;
|
||
CROS_EC_SPI = module;
|
||
CROS_EC_LPC = module;
|
||
CROS_EC_ISHTP = module;
|
||
|
||
CROS_KBD_LED_BACKLIGHT = module;
|
||
} // optionalAttrs (versionAtLeast version "5.4" && stdenv.hostPlatform.system == "x86_64-linux") {
|
||
CHROMEOS_LAPTOP = module;
|
||
CHROMEOS_PSTORE = module;
|
||
};
|
||
};
|
||
in
|
||
flattenKConf options
|