d8e4432fe2
This was presumably set for grsecurity compatibility, but now appears redundant. Grsecurity does not expect nor require /dev/kmem to be present and so it makes little sense to continue making its inclusion in the standard kernel dependent on grsecurity. More generally, given the large number of possible grsecurity configurations, it is unclear what `features.grsecurity` even *means* and its use should be discouraged.
594 lines
15 KiB
Nix
594 lines
15 KiB
Nix
/*
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WARNING/NOTE: whenever you want to add an option here you need to
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either
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* mark it as an optional one with `?` suffix,
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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 `versionOlder` or
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`versionAtLeast`.
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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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*/
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{ stdenv, version, kernelPlatform, extraConfig, features }:
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with stdenv.lib;
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''
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# Compress kernel modules for a sizable disk space savings.
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${optionalString (versionAtLeast version "3.18") ''
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MODULE_COMPRESS y
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MODULE_COMPRESS_XZ y
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''}
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# Debugging.
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DEBUG_KERNEL y
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TIMER_STATS y
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BACKTRACE_SELF_TEST n
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CPU_NOTIFIER_ERROR_INJECT? n
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DEBUG_DEVRES n
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DEBUG_NX_TEST n
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DEBUG_STACK_USAGE n
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${optionalString (!(features.grsecurity or false)) ''
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DEBUG_STACKOVERFLOW n
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''}
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RCU_TORTURE_TEST n
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SCHEDSTATS n
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DETECT_HUNG_TASK y
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# Unix domain sockets.
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UNIX y
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# Power management.
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${optionalString (versionOlder version "3.19") ''
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PM_RUNTIME y
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''}
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PM_ADVANCED_DEBUG y
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${optionalString (versionAtLeast version "3.11") ''
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X86_INTEL_LPSS y
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''}
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${optionalString (versionAtLeast version "3.10") ''
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X86_INTEL_PSTATE y
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''}
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INTEL_IDLE y
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CPU_FREQ_DEFAULT_GOV_PERFORMANCE y
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${optionalString (versionOlder version "3.10") ''
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USB_SUSPEND y
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''}
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# Support drivers that need external firmware.
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STANDALONE n
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# Make /proc/config.gz available.
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IKCONFIG y
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IKCONFIG_PROC y
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# Optimize with -O2, not -Os.
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CC_OPTIMIZE_FOR_SIZE n
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# Enable the kernel's built-in memory tester.
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MEMTEST y
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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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IOSCHED_CFQ y
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BLK_CGROUP y # required by CFQ
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# Enable NUMA.
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NUMA? y
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# Disable some expensive (?) features.
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PM_TRACE_RTC n
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# Enable various subsystems.
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ACCESSIBILITY y # Accessibility support
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AUXDISPLAY y # Auxiliary Display support
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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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${optionalString (versionOlder version "3.2") ''
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NET_POCKET y # enable pocket and portable adapters
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''}
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SCSI_LOWLEVEL y # enable lots of SCSI devices
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SCSI_LOWLEVEL_PCMCIA y
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SCSI_SAS_ATA y # added to enable detection of hard drive
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SPI y # needed for many devices
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SPI_MASTER y
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WAN y
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# Networking options.
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IP_PNP n
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${optionalString (versionOlder version "3.13") ''
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IPV6_PRIVACY y
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''}
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NETFILTER_ADVANCED y
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IP_VS_PROTO_TCP y
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IP_VS_PROTO_UDP y
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IP_VS_PROTO_ESP y
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IP_VS_PROTO_AH y
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IP_DCCP_CCID3 n # experimental
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CLS_U32_PERF y
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CLS_U32_MARK y
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${optionalString (stdenv.system == "x86_64-linux") ''
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BPF_JIT y
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''}
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${optionalString (versionAtLeast version "4.4") ''
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NET_CLS_BPF m
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NET_ACT_BPF m
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''}
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# Wireless networking.
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CFG80211_WEXT? y # Without it, ipw2200 drivers don't build
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IPW2100_MONITOR? y # support promiscuous mode
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IPW2200_MONITOR? y # support promiscuous mode
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HOSTAP_FIRMWARE? y # Support downloading firmware images with Host AP driver
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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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${optionalString (versionAtLeast version "3.2") ''
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B43_PHY_HT? y
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''}
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BCMA_HOST_PCI? y
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# Enable various FB devices.
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FB y
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FB_EFI y
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FB_NVIDIA_I2C y # Enable DDC Support
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FB_RIVA_I2C y
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FB_ATY_CT y # Mach64 CT/VT/GT/LT (incl. 3D RAGE) support
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FB_ATY_GX y # Mach64 GX support
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FB_SAVAGE_I2C y
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FB_SAVAGE_ACCEL y
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FB_SIS_300 y
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FB_SIS_315 y
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FB_3DFX_ACCEL y
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FB_VESA y
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FRAMEBUFFER_CONSOLE y
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FRAMEBUFFER_CONSOLE_ROTATION y
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${optionalString (versionOlder version "3.9" || stdenv.system == "i686-linux") ''
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FB_GEODE y
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''}
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# Video configuration.
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# Enable KMS for devices whose X.org driver supports it.
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${optionalString (versionOlder version "4.3" && !(features.chromiumos or false)) ''
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DRM_I915_KMS y
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''}
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# Allow specifying custom EDID on the kernel command line
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DRM_LOAD_EDID_FIRMWARE y
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${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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# Sound.
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SND_DYNAMIC_MINORS y
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SND_AC97_POWER_SAVE y # AC97 Power-Saving Mode
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SND_HDA_INPUT_BEEP y # Support digital beep via input layer
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SND_USB_CAIAQ_INPUT y
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PSS_MIXER y # Enable PSS mixer (Beethoven ADSP-16 and other compatible)
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# USB serial devices.
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USB_SERIAL_GENERIC y # USB Generic Serial Driver
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USB_SERIAL_KEYSPAN_MPR y # include firmware for various USB serial devices
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USB_SERIAL_KEYSPAN_USA28 y
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USB_SERIAL_KEYSPAN_USA28X y
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USB_SERIAL_KEYSPAN_USA28XA y
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USB_SERIAL_KEYSPAN_USA28XB y
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USB_SERIAL_KEYSPAN_USA19 y
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USB_SERIAL_KEYSPAN_USA18X y
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USB_SERIAL_KEYSPAN_USA19W y
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USB_SERIAL_KEYSPAN_USA19QW y
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USB_SERIAL_KEYSPAN_USA19QI y
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USB_SERIAL_KEYSPAN_USA49W y
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USB_SERIAL_KEYSPAN_USA49WLC y
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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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FANOTIFY y
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EXT2_FS_XATTR y
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EXT2_FS_POSIX_ACL y
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EXT2_FS_SECURITY y
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${optionalString (versionOlder version "4.0") ''
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EXT2_FS_XIP y # Ext2 execute in place support
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''}
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EXT3_FS_POSIX_ACL y
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EXT3_FS_SECURITY y
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EXT4_FS_POSIX_ACL y
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EXT4_FS_SECURITY y
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REISERFS_FS_XATTR? y
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REISERFS_FS_POSIX_ACL? y
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REISERFS_FS_SECURITY? y
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JFS_POSIX_ACL? y
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JFS_SECURITY? y
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XFS_QUOTA? y
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XFS_POSIX_ACL? y
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XFS_RT? y # XFS Realtime subvolume support
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OCFS2_DEBUG_MASKLOG? n
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BTRFS_FS_POSIX_ACL y
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UBIFS_FS_ADVANCED_COMPR? y
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${optionalString (versionAtLeast version "4.0" && versionOlder version "4.6") ''
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NFSD_PNFS y
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''}
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NFSD_V2_ACL y
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NFSD_V3 y
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NFSD_V3_ACL y
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NFSD_V4 y
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${optionalString (versionAtLeast version "3.11") ''
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NFSD_V4_SECURITY_LABEL y
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''}
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NFS_FSCACHE y
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${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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${optionalString (versionAtLeast version "3.11") ''
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NFS_V4_1 y # NFSv4.1 client support
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NFS_V4_2 y
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NFS_V4_SECURITY_LABEL y
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''}
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CIFS_XATTR y
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CIFS_POSIX y
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CIFS_FSCACHE y
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${optionalString (versionAtLeast version "3.12") ''
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CEPH_FSCACHE y
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''}
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${optionalString (versionAtLeast version "3.14") ''
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CEPH_FS_POSIX_ACL y
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''}
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${optionalString (versionAtLeast version "3.13") ''
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SQUASHFS_FILE_DIRECT y
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SQUASHFS_DECOMP_MULTI_PERCPU y
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''}
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SQUASHFS_XATTR y
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SQUASHFS_ZLIB y
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SQUASHFS_LZO y
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SQUASHFS_XZ y
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${optionalString (versionAtLeast version "3.19") ''
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SQUASHFS_LZ4 y
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''}
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# Runtime security tests
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DEBUG_SET_MODULE_RONX? y # Detect writes to read-only module pages
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# Security related features.
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STRICT_DEVMEM y # Filter access to /dev/mem
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SECURITY_SELINUX_BOOTPARAM_VALUE 0 # Disable SELinux by default
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DEVKMEM n # Disable /dev/kmem
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${if versionOlder version "3.14" then ''
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CC_STACKPROTECTOR? y # Detect buffer overflows on the stack
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'' else ''
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CC_STACKPROTECTOR_REGULAR? y
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''}
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${optionalString (versionAtLeast version "3.12") ''
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USER_NS y # Support for user namespaces
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''}
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# AppArmor support
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SECURITY_APPARMOR y
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DEFAULT_SECURITY_APPARMOR y
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# Microcode loading support
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MICROCODE y
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MICROCODE_INTEL y
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MICROCODE_AMD y
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${optionalString (versionAtLeast version "3.11" && versionOlder version "4.4") ''
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MICROCODE_EARLY y
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MICROCODE_INTEL_EARLY y
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MICROCODE_AMD_EARLY y
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''}
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# Misc. options.
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8139TOO_8129 y
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8139TOO_PIO n # PIO is slower
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AIC79XX_DEBUG_ENABLE n
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AIC7XXX_DEBUG_ENABLE n
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AIC94XX_DEBUG n
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${optionalString (versionAtLeast version "3.3" && versionOlder version "3.13") ''
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AUDIT_LOGINUID_IMMUTABLE y
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''}
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${optionalString (versionOlder version "4.4") ''
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B43_PCMCIA? y
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''}
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BLK_DEV_CMD640_ENHANCED y # CMD640 enhanced support
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BLK_DEV_IDEACPI y # IDE ACPI support
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BLK_DEV_INTEGRITY y
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BSD_PROCESS_ACCT_V3 y
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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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${optionalString (versionAtLeast version "3.4") ''
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BT_RFCOMM_TTY? y # RFCOMM TTY support
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''}
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CRASH_DUMP? n
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${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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${optionalString (versionAtLeast version "3.3") ''
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EFI_STUB y # EFI bootloader in the bzImage itself
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''}
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FHANDLE y # used by systemd
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FUSION y # Fusion MPT device support
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IDE_GD_ATAPI y # ATAPI floppy support
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IRDA_ULTRA y # Ultra (connectionless) protocol
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JOYSTICK_IFORCE_232? y # I-Force Serial joysticks and wheels
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JOYSTICK_IFORCE_USB? y # I-Force USB joysticks and wheels
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JOYSTICK_XPAD_FF? y # X-Box gamepad rumble support
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JOYSTICK_XPAD_LEDS? y # LED Support for Xbox360 controller 'BigX' LED
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LDM_PARTITION y # Windows Logical Disk Manager (Dynamic Disk) support
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LEDS_TRIGGER_IDE_DISK y # LED IDE Disk Trigger
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LOGIRUMBLEPAD2_FF y # Logitech Rumblepad 2 force feedback
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LOGO n # not needed
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MEDIA_ATTACH y
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MEGARAID_NEWGEN y
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${optionalString (versionAtLeast version "3.15") ''
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MLX4_EN_VXLAN y
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''}
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MODVERSIONS y
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MOUSE_PS2_ELANTECH y # Elantech PS/2 protocol extension
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MTRR_SANITIZER y
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NET_FC y # Fibre Channel driver support
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${optionalString (versionAtLeast version "3.11") ''
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PINCTRL_BAYTRAIL y # GPIO on Intel Bay Trail, for some Chromebook internal eMMC disks
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''}
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MMC_BLOCK_MINORS 32 # 8 is default. Modern gpt tables on eMMC may go far beyond 8.
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PPP_MULTILINK y # PPP multilink support
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PPP_FILTER y
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REGULATOR y # Voltage and Current Regulator Support
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${optionalString (versionAtLeast version "3.6") ''
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RC_DEVICES? y # Enable IR devices
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''}
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${optionalString (versionAtLeast version "3.10") ''
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RT2800USB_RT55XX y
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''}
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SCSI_LOGGING y # SCSI logging facility
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SERIAL_8250 y # 8250/16550 and compatible serial support
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SLIP_COMPRESSED y # CSLIP compressed headers
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SLIP_SMART y
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HWMON y
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THERMAL_HWMON y # Hardware monitoring support
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${optionalString (versionAtLeast version "3.15") ''
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UEVENT_HELPER n
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''}
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${optionalString (versionOlder version "3.15") ''
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USB_DEBUG? n
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''}
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USB_EHCI_ROOT_HUB_TT y # Root Hub Transaction Translators
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USB_EHCI_TT_NEWSCHED y # Improved transaction translator scheduling
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X86_CHECK_BIOS_CORRUPTION y
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X86_MCE y
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# PCI-Expresscard hotplug support
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${optionalString (versionAtLeast version "3.12") "HOTPLUG_PCI_PCIE y"}
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# Linux containers.
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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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${if versionAtLeast version "3.6" then ''
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MEMCG y
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MEMCG_SWAP y
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'' else ''
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CGROUP_MEM_RES_CTLR y
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CGROUP_MEM_RES_CTLR_SWAP y
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''}
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DEVPTS_MULTIPLE_INSTANCES y
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BLK_DEV_THROTTLING y
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CFQ_GROUP_IOSCHED y
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# Enable staging drivers. These are somewhat experimental, but
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# they generally don't hurt.
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STAGING y
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# PROC_EVENTS requires that the netlink connector is not built
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# as a module. This is required by libcgroup's cgrulesengd.
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CONNECTOR y
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PROC_EVENTS y
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# Tracing.
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FTRACE y
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KPROBES y
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FUNCTION_TRACER y
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FTRACE_SYSCALLS y
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SCHED_TRACER y
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STACK_TRACER y
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${optionalString (versionAtLeast version "3.10") ''
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UPROBE_EVENT y
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''}
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${optionalString (versionAtLeast version "4.4") ''
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BPF_SYSCALL y
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BPF_EVENTS y
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''}
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FUNCTION_PROFILER y
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RING_BUFFER_BENCHMARK n
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# Devtmpfs support.
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DEVTMPFS y
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# Easier debugging of NFS issues.
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${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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${optionalString (!(features.grsecurity or false))
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(if versionAtLeast version "3.10" then ''
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HYPERVISOR_GUEST y
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'' else ''
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PARAVIRT_GUEST? y
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'')
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}
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KVM_APIC_ARCHITECTURE y
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KVM_ASYNC_PF y
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${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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${optionalString (versionAtLeast version "4.0") ''
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KVM_GENERIC_DIRTYLOG_READ_PROTECT y
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''}
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${optionalString (!features.grsecurity or true) ''
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KVM_GUEST y
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''}
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KVM_MMIO y
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${optionalString (versionAtLeast version "3.13") ''
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KVM_VFIO y
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''}
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XEN? y
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XEN_DOM0? y
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${optionalString ((versionAtLeast version "3.18") && (features.xen_dom0 or false)) ''
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PCI_XEN? y
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HVC_XEN? y
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HVC_XEN_FRONTEND? y
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XEN_SYS_HYPERVISOR? y
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SWIOTLB_XEN? y
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XEN_BACKEND? y
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XEN_BALLOON? y
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XEN_BALLOON_MEMORY_HOTPLUG? y
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XEN_EFI? y
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XEN_HAVE_PVMMU? y
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XEN_MCE_LOG? y
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XEN_PVH? y
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XEN_PVHVM? y
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XEN_SAVE_RESTORE? y
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XEN_SCRUB_PAGES? y
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XEN_SELFBALLOONING? y
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XEN_STUB? y
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XEN_TMEM? y
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''}
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KSM y
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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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VFIO_PCI_VGA y
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''}
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VIRT_DRIVERS y
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# Media support.
|
|
${optionalString (versionAtLeast version "3.6") ''
|
|
MEDIA_DIGITAL_TV_SUPPORT y
|
|
MEDIA_CAMERA_SUPPORT y
|
|
MEDIA_RC_SUPPORT y
|
|
''}
|
|
${optionalString (versionAtLeast version "3.7") ''
|
|
MEDIA_USB_SUPPORT y
|
|
${optionalString (!(features.chromiumos or false)) ''
|
|
MEDIA_PCI_SUPPORT y
|
|
''}
|
|
''}
|
|
|
|
# Our initrd init uses shebang scripts, so can't be modular.
|
|
${optionalString (versionAtLeast version "3.10") ''
|
|
BINFMT_SCRIPT y
|
|
''}
|
|
|
|
# For systemd-binfmt
|
|
BINFMT_MISC? y
|
|
|
|
# Enable the 9P cache to speed up NixOS VM tests.
|
|
9P_FSCACHE? y
|
|
9P_FS_POSIX_ACL? y
|
|
|
|
# Enable transparent support for huge pages.
|
|
TRANSPARENT_HUGEPAGE? y
|
|
TRANSPARENT_HUGEPAGE_ALWAYS? n
|
|
TRANSPARENT_HUGEPAGE_MADVISE? y
|
|
|
|
# zram support (e.g for in-memory compressed swap).
|
|
${optionalString (versionAtLeast version "3.4") ''
|
|
ZSMALLOC y
|
|
''}
|
|
ZRAM m
|
|
|
|
# Enable PCIe and USB for the brcmfmac driver
|
|
BRCMFMAC_USB? y
|
|
BRCMFMAC_PCIE? y
|
|
|
|
# Support x2APIC (which requires IRQ remapping).
|
|
${optionalString (stdenv.system == "x86_64-linux") ''
|
|
X86_X2APIC y
|
|
IRQ_REMAP y
|
|
''}
|
|
|
|
# Disable the firmware helper fallback, udev doesn't implement it any more
|
|
FW_LOADER_USER_HELPER_FALLBACK? n
|
|
|
|
# ChromiumOS support
|
|
${optionalString (features.chromiumos or false) ''
|
|
CHROME_PLATFORMS y
|
|
VGA_SWITCHEROO n
|
|
MMC_SDHCI_PXAV2 n
|
|
NET_IPVTI n
|
|
IPV6_VTI n
|
|
REGULATOR_FIXED_VOLTAGE n
|
|
TPS6105X n
|
|
CPU_FREQ_STAT y
|
|
IPV6 y
|
|
MFD_CROS_EC y
|
|
MFD_CROS_EC_LPC y
|
|
MFD_CROS_EC_DEV y
|
|
CHARGER_CROS_USB_PD y
|
|
I2C y
|
|
MEDIA_SUBDRV_AUTOSELECT n
|
|
VIDEO_IR_I2C n
|
|
BLK_DEV_DM y
|
|
ANDROID_PARANOID_NETWORK n
|
|
DM_VERITY n
|
|
DRM_VGEM n
|
|
CPU_FREQ_GOV_INTERACTIVE n
|
|
INPUT_KEYRESET n
|
|
DM_BOOTCACHE n
|
|
UID_CPUTIME n
|
|
|
|
${optionalString (versionAtLeast version "3.18") ''
|
|
CPUFREQ_DT n
|
|
EXTCON_CROS_EC n
|
|
DRM_POWERVR_ROGUE n
|
|
CHROMEOS_OF_FIRMWARE y
|
|
TEST_RHASHTABLE n
|
|
BCMDHD n
|
|
TRUSTY n
|
|
''}
|
|
|
|
${optionalString (versionOlder version "3.18") ''
|
|
MALI_MIDGARD n
|
|
DVB_USB_DIB0700 n
|
|
DVB_USB_DW2102 n
|
|
DVB_USB_PCTV452E n
|
|
DVB_USB_TTUSB2 n
|
|
DVB_USB_AF9015 n
|
|
DVB_USB_AF9035 n
|
|
DVB_USB_ANYSEE n
|
|
DVB_USB_AZ6007 n
|
|
DVB_USB_IT913X n
|
|
DVB_USB_LME2510 n
|
|
DVB_USB_RTL28XXU n
|
|
USB_S2255 n
|
|
VIDEO_EM28XX n
|
|
VIDEO_TM6000 n
|
|
USB_DWC2 n
|
|
USB_GSPCA n
|
|
SPEAKUP n
|
|
XO15_EBOOK n
|
|
USB_GADGET n
|
|
''}
|
|
''}
|
|
|
|
${kernelPlatform.kernelExtraConfig or ""}
|
|
${extraConfig}
|
|
''
|