988c12faed
LPAE was enabled to support native armv7l builders running in QEMU on aarch64, but this option disables support for processors which don't support LPAE, which are still relatively common. In particular, Beaglebones use the Cortex-A8, which doesn't support LPAE. Also, if you attempt to boot an LPAE kernel on a CPU that doesn't support it, it fails before even earlycon is initialized. This makes the problem difficult to debug without enabling CONFIG_DEBUG_LL or using a hardware debugger.
886 lines
34 KiB
Nix
886 lines
34 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.isPowerPC && 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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DEBUG_INFO = if (features.debug or false) then yes else no;
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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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PM_ADVANCED_DEBUG = yes;
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X86_INTEL_LPSS = yes;
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X86_INTEL_PSTATE = yes;
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INTEL_IDLE = yes;
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CPU_FREQ_DEFAULT_GOV_PERFORMANCE = yes;
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CPU_FREQ_GOV_SCHEDUTIL = whenAtLeast "4.9" yes;
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PM_WAKELOCKS = yes;
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# Power-capping framework and support for INTEL RAPL
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POWERCAP = yes;
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INTEL_RAPL = whenAtLeast "5.3" module;
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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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# 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_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 = whenAtLeast "4.7" 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 = whenAtLeast "4.4" module;
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NET_ACT_BPF = whenAtLeast "4.4" 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 = whenAtLeast "4.7" 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 = whenAtLeast "4.9" (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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};
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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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};
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video = {
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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;
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DRM_GMA3600 = whenOlder "5.12" yes;
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DRM_VMWGFX_FBCON = yes;
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# necessary for amdgpu polaris support
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DRM_AMD_POWERPLAY = whenBetween "4.5" "4.9" yes;
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# (experimental) amdgpu support for verde and newer chipsets
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DRM_AMDGPU_SI = whenAtLeast "4.9" yes;
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# (stable) amdgpu support for bonaire and newer chipsets
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DRM_AMDGPU_CIK = whenAtLeast "4.9" yes;
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# Allow device firmware updates
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DRM_DP_AUX_CHARDEV = whenAtLeast "4.6" yes;
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# amdgpu display core (DC) support
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DRM_AMD_DC_DCN1_0 = whenBetween "4.15" "5.6" yes;
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DRM_AMD_DC_PRE_VEGA = whenBetween "4.15" "4.18" yes;
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DRM_AMD_DC_DCN2_0 = whenBetween "5.3" "5.6" yes;
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DRM_AMD_DC_DCN2_1 = whenBetween "5.4" "5.6" yes;
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DRM_AMD_DC_DCN3_0 = whenBetween "5.9" "5.11" yes;
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DRM_AMD_DC_DCN = whenAtLeast "5.11" yes;
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DRM_AMD_DC_HDCP = whenAtLeast "5.5" yes;
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DRM_AMD_DC_SI = whenAtLeast "5.10" yes;
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} // optionalAttrs (stdenv.hostPlatform.system == "x86_64-linux") {
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# Intel GVT-g graphics virtualization supports 64-bit only
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DRM_I915_GVT = whenAtLeast "4.16" yes;
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DRM_I915_GVT_KVMGT = whenAtLeast "4.16" module;
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};
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sound = {
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SND_DYNAMIC_MINORS = yes;
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SND_AC97_POWER_SAVE = yes; # AC97 Power-Saving Mode
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SND_HDA_INPUT_BEEP = yes; # Support digital beep via input layer
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SND_HDA_RECONFIG = yes; # Support reconfiguration of jack functions
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# Support configuring jack functions via fw mechanism at boot
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SND_HDA_PATCH_LOADER = yes;
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SND_HDA_CODEC_CA0132_DSP = whenOlder "5.7" yes; # Enable DSP firmware loading on Creative Soundblaster Z/Zx/ZxR/Recon
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SND_OSSEMUL = yes;
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SND_USB_CAIAQ_INPUT = yes;
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# Enable PSS mixer (Beethoven ADSP-16 and other compatible)
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PSS_MIXER = whenOlder "4.12" yes;
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# Enable Sound Open Firmware support
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} // optionalAttrs (stdenv.hostPlatform.system == "x86_64-linux" &&
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versionAtLeast version "5.5") {
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SND_SOC_SOF_TOPLEVEL = yes;
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SND_SOC_SOF_ACPI = module;
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SND_SOC_SOF_PCI = module;
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SND_SOC_SOF_APOLLOLAKE = whenAtLeast "5.12" module;
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SND_SOC_SOF_APOLLOLAKE_SUPPORT = whenOlder "5.12" yes;
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SND_SOC_SOF_CANNONLAKE = whenAtLeast "5.12" module;
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SND_SOC_SOF_CANNONLAKE_SUPPORT = whenOlder "5.12" yes;
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SND_SOC_SOF_COFFEELAKE = whenAtLeast "5.12" module;
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SND_SOC_SOF_COFFEELAKE_SUPPORT = whenOlder "5.12" yes;
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SND_SOC_SOF_COMETLAKE = whenAtLeast "5.12" module;
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SND_SOC_SOF_COMETLAKE_H_SUPPORT = whenOlder "5.8" yes;
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SND_SOC_SOF_COMETLAKE_LP_SUPPORT = whenOlder "5.12" yes;
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SND_SOC_SOF_ELKHARTLAKE = whenAtLeast "5.12" module;
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SND_SOC_SOF_ELKHARTLAKE_SUPPORT = whenOlder "5.12" yes;
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SND_SOC_SOF_GEMINILAKE = whenAtLeast "5.12" module;
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SND_SOC_SOF_GEMINILAKE_SUPPORT = whenOlder "5.12" yes;
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SND_SOC_SOF_HDA_AUDIO_CODEC = yes;
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SND_SOC_SOF_HDA_COMMON_HDMI_CODEC = whenOlder "5.7" yes;
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SND_SOC_SOF_HDA_LINK = yes;
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SND_SOC_SOF_ICELAKE = whenAtLeast "5.12" module;
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SND_SOC_SOF_ICELAKE_SUPPORT = whenOlder "5.12" yes;
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SND_SOC_SOF_INTEL_TOPLEVEL = yes;
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SND_SOC_SOF_JASPERLAKE = whenAtLeast "5.12" module;
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SND_SOC_SOF_JASPERLAKE_SUPPORT = whenOlder "5.12" yes;
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SND_SOC_SOF_MERRIFIELD = whenAtLeast "5.12" module;
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SND_SOC_SOF_MERRIFIELD_SUPPORT = whenOlder "5.12" yes;
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SND_SOC_SOF_TIGERLAKE = whenAtLeast "5.12" module;
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SND_SOC_SOF_TIGERLAKE_SUPPORT = whenOlder "5.12" yes;
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};
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usb-serial = {
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USB_SERIAL_GENERIC = yes; # USB Generic Serial Driver
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} // optionalAttrs (versionOlder version "4.16") {
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# Include firmware for various USB serial devices.
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# Only applicable for kernels below 4.16, after that no firmware is shipped in the kernel tree.
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USB_SERIAL_KEYSPAN_MPR = yes;
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USB_SERIAL_KEYSPAN_USA28 = yes;
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USB_SERIAL_KEYSPAN_USA28X = yes;
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USB_SERIAL_KEYSPAN_USA28XA = yes;
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USB_SERIAL_KEYSPAN_USA28XB = yes;
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USB_SERIAL_KEYSPAN_USA19 = yes;
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USB_SERIAL_KEYSPAN_USA18X = yes;
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USB_SERIAL_KEYSPAN_USA19W = yes;
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USB_SERIAL_KEYSPAN_USA19QW = yes;
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USB_SERIAL_KEYSPAN_USA19QI = yes;
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USB_SERIAL_KEYSPAN_USA49W = yes;
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USB_SERIAL_KEYSPAN_USA49WLC = yes;
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};
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usb = {
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USB_DEBUG = { optional = true; tristate = whenOlder "4.18" "n";};
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USB_EHCI_ROOT_HUB_TT = yes; # Root Hub Transaction Translators
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USB_EHCI_TT_NEWSCHED = yes; # Improved transaction translator scheduling
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USB_HIDDEV = yes; # USB Raw HID Devices (like monitor controls and Uninterruptable Power Supplies)
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};
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# Filesystem options - in particular, enable extended attributes and
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# ACLs for all filesystems that support them.
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filesystem = {
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FANOTIFY = yes;
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||
TMPFS = yes;
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TMPFS_POSIX_ACL = yes;
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FS_ENCRYPTION = if (versionAtLeast version "5.1") then yes else whenAtLeast "4.9" (option module);
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||
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||
EXT2_FS_XATTR = yes;
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||
EXT2_FS_POSIX_ACL = yes;
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||
EXT2_FS_SECURITY = yes;
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||
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||
EXT3_FS_POSIX_ACL = yes;
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||
EXT3_FS_SECURITY = yes;
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||
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||
EXT4_FS_POSIX_ACL = yes;
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||
EXT4_FS_SECURITY = yes;
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||
EXT4_ENCRYPTION = { optional = true; tristate = if (versionOlder version "4.8") then "m" else "y"; };
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REISERFS_FS_XATTR = option yes;
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REISERFS_FS_POSIX_ACL = option yes;
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REISERFS_FS_SECURITY = option yes;
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JFS_POSIX_ACL = option yes;
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JFS_SECURITY = option yes;
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XFS_QUOTA = option yes;
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XFS_POSIX_ACL = option yes;
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XFS_RT = option yes; # XFS Realtime subvolume support
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||
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OCFS2_DEBUG_MASKLOG = option no;
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||
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BTRFS_FS_POSIX_ACL = yes;
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||
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UBIFS_FS_ADVANCED_COMPR = option yes;
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F2FS_FS = module;
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F2FS_FS_SECURITY = option yes;
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F2FS_FS_ENCRYPTION = option yes;
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F2FS_FS_COMPRESSION = whenAtLeast "5.6" yes;
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UDF_FS = module;
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NFSD_PNFS = whenBetween "4.0" "4.6" yes;
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NFSD_V2_ACL = yes;
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NFSD_V3 = yes;
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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 = 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
|
||
|
||
DEVTMPFS = yes;
|
||
|
||
UNICODE = whenAtLeast "5.2" yes; # Casefolding support for filesystems
|
||
};
|
||
|
||
security = {
|
||
# Detect writes to read-only module pages
|
||
DEBUG_SET_MODULE_RONX = { optional = true; tristate = whenOlder "4.11" "y"; };
|
||
RANDOMIZE_BASE = option yes;
|
||
STRICT_DEVMEM = option yes; # Filter access to /dev/mem
|
||
SECURITY_SELINUX_BOOTPARAM_VALUE = whenOlder "5.1" (freeform "0"); # Disable SELinux by default
|
||
# Prevent processes from ptracing non-children processes
|
||
SECURITY_YAMA = option 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
|
||
|
||
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;
|
||
} // optionalAttrs (!stdenv.hostPlatform.isAarch32) {
|
||
|
||
# Detect buffer overflows on the stack
|
||
CC_STACKPROTECTOR_REGULAR = {optional = true; tristate = whenOlder "4.18" "y";};
|
||
};
|
||
|
||
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;
|
||
|
||
DEVPTS_MULTIPLE_INSTANCES = whenOlder "4.7" yes;
|
||
BLK_DEV_THROTTLING = yes;
|
||
CFQ_GROUP_IOSCHED = whenOlder "5.0" yes; # Removed in 5.0-RC1
|
||
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;
|
||
UPROBE_EVENT = { optional = true; tristate = whenOlder "4.11" "y";};
|
||
UPROBE_EVENTS = { optional = true; tristate = whenAtLeast "4.11" "y";};
|
||
BPF_SYSCALL = whenAtLeast "4.4" yes;
|
||
BPF_EVENTS = whenAtLeast "4.4" yes;
|
||
FUNCTION_PROFILER = yes;
|
||
RING_BUFFER_BENCHMARK = no;
|
||
};
|
||
|
||
virtualisation = {
|
||
PARAVIRT = option yes;
|
||
|
||
HYPERVISOR_GUEST = yes;
|
||
PARAVIRT_SPINLOCKS = option yes;
|
||
|
||
KVM_APIC_ARCHITECTURE = whenOlder "4.8" yes;
|
||
KVM_ASYNC_PF = yes;
|
||
KVM_COMPAT = { optional = true; tristate = whenBetween "4.0" "4.12" "y"; };
|
||
KVM_DEVICE_ASSIGNMENT = { optional = true; tristate = whenBetween "3.10" "4.12" "y"; };
|
||
KVM_GENERIC_DIRTYLOG_READ_PROTECT = whenAtLeast "4.0" 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;
|
||
HOLTEK_FF = 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;
|
||
B43_PCMCIA = { optional=true; tristate = whenOlder "4.4" "y";};
|
||
|
||
BLK_DEV_INTEGRITY = yes;
|
||
|
||
BLK_SED_OPAL = whenAtLeast "4.14" yes;
|
||
|
||
BSD_PROCESS_ACCT_V3 = yes;
|
||
|
||
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
|
||
|
||
CLEANCACHE = option yes;
|
||
CRASH_DUMP = option no;
|
||
|
||
DVB_DYNAMIC_MINORS = option yes; # we use udev
|
||
|
||
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
|
||
|
||
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;
|
||
|
||
MLX4_EN_VXLAN = whenOlder "4.8" yes;
|
||
MLX5_CORE_EN = option yes;
|
||
|
||
NVME_MULTIPATH = whenAtLeast "4.15" yes;
|
||
|
||
PSI = whenAtLeast "4.20" yes;
|
||
|
||
MODVERSIONS = whenOlder "4.9" yes;
|
||
MOUSE_ELAN_I2C_SMBUS = yes;
|
||
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
|
||
PINCTRL_BAYTRAIL = 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
|
||
|
||
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;
|
||
|
||
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) ];
|
||
|
||
} // 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;
|
||
|
||
};
|
||
};
|
||
in
|
||
flattenKConf options
|