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https://github.com/NixOS/nixpkgs.git
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linux: Enable some kernel features
This enables a few features that should be useful and safe (they're all used by the default Ubuntu kernel config), in particular zswap, wakelocks, kernel load address randomization, userfaultfd (useful for QEMU), paravirtualized spinlocks and automatic process group scheduling. Also removes some configuration conditional on kernel versions that we no longer support.
This commit is contained in:
Eelco Dolstra
parent
1cd7dbc00b
commit
7b9c493d60
@ -67,6 +67,7 @@ with stdenv.lib;
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${optionalString (versionOlder version "3.10") ''
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USB_SUSPEND y
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''}
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PM_WAKELOCKS y
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# Support drivers that need external firmware.
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STANDALONE n
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@ -98,9 +99,6 @@ with stdenv.lib;
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DONGLE y # Serial dongle support
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HIPPI y
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MTD_COMPLEX_MAPPINGS y # needed for many devices
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${optionalString (versionOlder version "3.2") ''
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NET_POCKET y # enable pocket and portable adapters
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''}
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SCSI_LOWLEVEL y # enable lots of SCSI devices
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SCSI_LOWLEVEL_PCMCIA y
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SCSI_SAS_ATA y # added to enable detection of hard drive
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@ -137,9 +135,7 @@ with stdenv.lib;
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HOSTAP_FIRMWARE_NVRAM? y
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ATH9K_PCI? y # Detect Atheros AR9xxx cards on PCI(e) bus
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ATH9K_AHB? y # Ditto, AHB bus
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${optionalString (versionAtLeast version "3.2") ''
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B43_PHY_HT? y
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''}
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BCMA_HOST_PCI? y
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# Enable various FB devices.
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@ -157,7 +153,7 @@ with stdenv.lib;
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FB_VESA y
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FRAMEBUFFER_CONSOLE y
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FRAMEBUFFER_CONSOLE_ROTATION y
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${optionalString (versionOlder version "3.9" || stdenv.system == "i686-linux") ''
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${optionalString (stdenv.system == "i686-linux") ''
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FB_GEODE y
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''}
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@ -168,11 +164,7 @@ with stdenv.lib;
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''}
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# Allow specifying custom EDID on the kernel command line
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DRM_LOAD_EDID_FIRMWARE y
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${optionalString (versionOlder version "3.9") ''
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DRM_RADEON_KMS? y
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''}
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# Hybrid graphics support
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VGA_SWITCHEROO y
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VGA_SWITCHEROO y # Hybrid graphics support
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# Sound.
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SND_DYNAMIC_MINORS y
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@ -231,9 +223,7 @@ with stdenv.lib;
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NFSD_V4_SECURITY_LABEL y
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''}
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NFS_FSCACHE y
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${optionalString (versionAtLeast version "3.6") ''
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NFS_SWAP y
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''}
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NFS_V3_ACL y
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${optionalString (versionAtLeast version "3.11") ''
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NFS_V4_1 y # NFSv4.1 client support
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@ -265,6 +255,7 @@ with stdenv.lib;
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DEBUG_SET_MODULE_RONX? y # Detect writes to read-only module pages
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# Security related features.
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RANDOMIZE_BASE y
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STRICT_DEVMEM y # Filter access to /dev/mem
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SECURITY_SELINUX_BOOTPARAM_VALUE 0 # Disable SELinux by default
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DEVKMEM n # Disable /dev/kmem
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@ -310,25 +301,25 @@ with stdenv.lib;
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BT_HCIUART_BCSP? y
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BT_HCIUART_H4? y # UART (H4) protocol support
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BT_HCIUART_LL? y
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${optionalString (versionAtLeast version "3.4") ''
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BT_RFCOMM_TTY? y # RFCOMM TTY support
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''}
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CLEANCACHE? y
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CRASH_DUMP? n
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${optionalString (versionOlder version "3.1") ''
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DMAR? n # experimental
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''}
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DVB_DYNAMIC_MINORS? y # we use udev
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${optionalString (versionAtLeast version "3.3") ''
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EFI_STUB y # EFI bootloader in the bzImage itself
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''}
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FHANDLE y # used by systemd
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FRONTSWAP y
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FUSION y # Fusion MPT device support
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IDE_GD_ATAPI y # ATAPI floppy support
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${optionalString (versionAtLeast version "4.3") ''
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IDLE_PAGE_TRACKING y
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''}
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IRDA_ULTRA y # Ultra (connectionless) protocol
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JOYSTICK_IFORCE_232? y # I-Force Serial joysticks and wheels
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JOYSTICK_IFORCE_USB? y # I-Force USB joysticks and wheels
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JOYSTICK_XPAD_FF? y # X-Box gamepad rumble support
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JOYSTICK_XPAD_LEDS? y # LED Support for Xbox360 controller 'BigX' LED
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KEXEC_FILE y
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KEXEC_JUMP y
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LDM_PARTITION y # Windows Logical Disk Manager (Dynamic Disk) support
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LEDS_TRIGGER_IDE_DISK y # LED IDE Disk Trigger
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LOGIRUMBLEPAD2_FF y # Logitech Rumblepad 2 force feedback
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@ -349,12 +340,9 @@ with stdenv.lib;
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PPP_MULTILINK y # PPP multilink support
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PPP_FILTER y
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REGULATOR y # Voltage and Current Regulator Support
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${optionalString (versionAtLeast version "3.6") ''
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RC_DEVICES? y # Enable IR devices
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''}
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${optionalString (versionAtLeast version "3.10") ''
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RT2800USB_RT55XX y
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''}
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SCHED_AUTOGROUP y
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SCSI_LOGGING y # SCSI logging facility
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SERIAL_8250 y # 8250/16550 and compatible serial support
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SLIP_COMPRESSED y # CSLIP compressed headers
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@ -369,6 +357,9 @@ with stdenv.lib;
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''}
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USB_EHCI_ROOT_HUB_TT y # Root Hub Transaction Translators
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USB_EHCI_TT_NEWSCHED y # Improved transaction translator scheduling
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${optionalString (versionAtLeast version "4.3") ''
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USERFAULTFD y
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''}
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X86_CHECK_BIOS_CORRUPTION y
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X86_MCE y
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@ -379,16 +370,14 @@ with stdenv.lib;
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NAMESPACES? y # Required by 'unshare' used by 'nixos-install'
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RT_GROUP_SCHED? y
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CGROUP_DEVICE? y
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${if versionAtLeast version "3.6" then ''
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MEMCG y
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MEMCG_SWAP y
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'' else ''
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CGROUP_MEM_RES_CTLR y
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CGROUP_MEM_RES_CTLR_SWAP y
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''}
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${optionalString (versionOlder version "4.7") "DEVPTS_MULTIPLE_INSTANCES y"}
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BLK_DEV_THROTTLING y
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CFQ_GROUP_IOSCHED y
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${optionalString (versionAtLeast version "4.3") ''
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CGROUP_PIDS y
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''}
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# Enable staging drivers. These are somewhat experimental, but
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# they generally don't hurt.
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@ -406,9 +395,7 @@ with stdenv.lib;
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FTRACE_SYSCALLS y
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SCHED_TRACER y
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STACK_TRACER y
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${optionalString (versionAtLeast version "3.10") ''
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UPROBE_EVENT y
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''}
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${optionalString (versionAtLeast version "4.4") ''
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BPF_SYSCALL y
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BPF_EVENTS y
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@ -420,28 +407,18 @@ with stdenv.lib;
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DEVTMPFS y
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# Easier debugging of NFS issues.
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${optionalString (versionAtLeast version "3.4") ''
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SUNRPC_DEBUG y
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''}
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# Virtualisation.
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PARAVIRT? y
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${if versionAtLeast version "3.10" then ''
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HYPERVISOR_GUEST y
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'' else ''
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PARAVIRT_GUEST? y
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''}
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PARAVIRT_SPINLOCKS? y
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KVM_APIC_ARCHITECTURE y
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KVM_ASYNC_PF y
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${optionalString (versionOlder version "3.7") ''
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KVM_CLOCK? y
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''}
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${optionalString (versionAtLeast version "4.0") ''
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KVM_COMPAT? y
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''}
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${optionalString (versionAtLeast version "3.10") ''
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KVM_DEVICE_ASSIGNMENT? y
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''}
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${optionalString (versionAtLeast version "4.0") ''
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KVM_GENERIC_DIRTYLOG_READ_PROTECT y
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''}
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@ -476,28 +453,22 @@ with stdenv.lib;
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${optionalString (!stdenv.is64bit) ''
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HIGHMEM64G? y # We need 64 GB (PAE) support for Xen guest support.
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''}
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${optionalString (versionAtLeast version "3.9" && stdenv.is64bit) ''
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${optionalString (stdenv.is64bit) ''
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VFIO_PCI_VGA y
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''}
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VIRT_DRIVERS y
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# Media support.
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${optionalString (versionAtLeast version "3.6") ''
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MEDIA_DIGITAL_TV_SUPPORT y
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MEDIA_CAMERA_SUPPORT y
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MEDIA_RC_SUPPORT y
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''}
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${optionalString (versionAtLeast version "3.7") ''
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MEDIA_USB_SUPPORT y
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${optionalString (!(features.chromiumos or false)) ''
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MEDIA_PCI_SUPPORT y
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''}
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''}
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# Our initrd init uses shebang scripts, so can't be modular.
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${optionalString (versionAtLeast version "3.10") ''
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BINFMT_SCRIPT y
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''}
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# For systemd-binfmt
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BINFMT_MISC? y
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@ -512,10 +483,9 @@ with stdenv.lib;
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TRANSPARENT_HUGEPAGE_MADVISE? y
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# zram support (e.g for in-memory compressed swap).
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${optionalString (versionAtLeast version "3.4") ''
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ZSMALLOC y
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''}
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ZRAM m
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ZSWAP y
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# Enable PCIe and USB for the brcmfmac driver
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BRCMFMAC_USB? y
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