KernelMaverickConfigReview

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== Unresolved issues ==

This should highlight any issues that should be addressed in further specifications, and not problems with the specification itself; since any specification with problems cannot be approved.
Line 361: Line 357:

Use this section to take notes during the BoF; if you keep it in the approved spec, use it for summarising what was discussed and note any options that were rejected.		 {{{
Reviewed the rules, some discussion on whether we should enable EXPERIMENTAL

review backlog of experimental
 * we will find that many new things are EXPERIMENTAL and end up disabled by policy, when they move non-EXPERIMENTAL we do not know to re-review them
 * possibly have script to grep for the EXPERIMENTAL flag

Review of filesystems
---------------------
Seems that ECRYPT_FS is onconsistant and should be fixed

Review of security
------------------
These are now all enforces by the new config enforcer, and seem ok

Review of sub-systems
---------------------
LLC and RFKILL are inconsistant and should be sorted out

New Options
-----------
CONFIG_ATH9K_DEBUGFS needs to be on

changes required as below:
 * CONFIG_ECRYPT_FS need to be made consistant
 * CONFIG_USB make consistant
 * CONFIG_SCSI make consistant
 * CONFIG_LLC=y make consistent
 * CONFIG_RFKILL=y make consistent
 * CONFIG_ATH9K_DEBUGFS=y
 * CONFIG_BLK_DEV_DRDB=m (if server has DKMS then it can replace)
   * interlock with server
 * CONFIG_CEPH_FS=m
 * CONFIG_CFQ_GROUP_SCHED=m ? server team may need this
 * CONFIG_CRYPTO_PCRYPT=m if it can be M
 * CONFIG_EEEPC_WMI=m
 * CONFIG_IWLWIFI_DEVICE_TRACING=y adds trace events
 * CONFIG_IWMC3200TOP_DEBUGFS=y
 * CONFIG_KSYM_TRACER chase to investigate
 * CONFIG_LIBERTAS_MESH=m
 * CONFIG_MMC_RICOH_MMC=m
 * CONFIG_RCU_FAST_NO_HZ=y
 * CONFIG_KSYM_TRACER=y/m
 * CONFIG_LIBERTAS_MESH=m
 * CONFIG_MMC_RICOH_MMC=m
 * RCU_FAST_NO_HZ=y
 * RT2800*=m
 * SCSI_HPSA=m
 * SND_HDA_INPUT_BEEP_MODE=0
 * VGA_SWITCHEROO=m
 * VHOST_NET=m
 * LP#579300 -- disable OSS thingy
 
ACTIONS:
 * change options as above
 * confirm no options from OEM side ??
 * investigate memory stick options and produce proposal [manjo]


Flavour Review
==============
proposal to actually build the -virtual flavour as a real flavour, wuld allow initramfs free boot
 
can we make a 64bit kernel for 32bit
 
is the preempt kernel in use, no real information currently
  * preempt is currently recommended by studio
 
ACTIONS:
  * split it out to a flavour
  * investigate whether we even can make a 64 bit kernel for 32bit [apw]
  * see if studio is using preempt


Debian Abstraction
==================

ACTIONS:
  * pull back abstraction [apw]
  * investigate debian 3.0 [apw]
  

ACTIONS:
 * report on this to ubuntu-devel
}}}

Summary

Review of the kernel configuration for Maverick. This will concentrate on confirming the policy for various option type, as well as new options. For major new options, discussion and confirmation of the selection of each.

Release Note

TBC

Rationale

We need to review the Maverick kernel config to:

  • Ensure sanity of options we have enabled/disabled
  • Ensure that we have the best possible coverage for hardware
  • Ensure we maintain our security options

Implementation

We need to review the default selection criteria for new options. We need to review any new options to ensure they are sensibly set. Finally we need to review important options such as filesystem selections and security options to ensure they are set as expected.

Selection Criteria

The basic rules are:

  1. if the option may be selected as module then we will enable it as a module,
  2. if the option creates a new subsystem (or filesystem) we will enable it,
  3. if the option is unlikely to cause regressions to existing behaviour we will enable it,
  4. if the option is dependent on EXPERIMENTAL then our normal policy is to not enable it,
  5. else it will be disabled.

Additionally we have general policy of building in:

  1. subsystems associated with busses (as they will probe much earlier that way)
  2. boot essential subsystems
  3. default filesystems

Filesystems

Option

UBUNTU

PORTS

Comments

CONFIG_9P_FS

m

m

CONFIG_ADFS_FS

m

m

CONFIG_AFFS_FS

m

m

CONFIG_AFS_FS

m

m

CONFIG_AUFS_FS

m

m

CONFIG_AUTOFS4_FS

m

m

CONFIG_AUTOFS_FS

m

m

CONFIG_BEFS_FS

m

m

CONFIG_BFS_FS

m

m

CONFIG_BTRFS_FS

m

m

CONFIG_CODA_FS

m

m

CONFIG_CONFIGFS_FS

m

m

CONFIG_DEBUG_FS

y

y

CONFIG_ECRYPT_FS

y

m

CONFIG_EFS_FS

m

m

CONFIG_EXOFS_FS

m

m

CONFIG_EXT2_FS

y

y

CONFIG_EXT3_FS

y

y

CONFIG_EXT4_FS

y

y

CONFIG_FAT_FS

m

m

CONFIG_FUSE_FS

y

y

CONFIG_GFS2_FS

m

m

CONFIG_HFSPLUS_FS

m

m

CONFIG_HFS_FS

m

m

CONFIG_HPFS_FS

m

m

CONFIG_IDE_PROC_FS

-

y

Same as Lucid

CONFIG_ISO9660_FS

m

m

CONFIG_JFFS2_FS

m

m

CONFIG_JFS_FS

m

m

CONFIG_MINIX_FS

m

m

CONFIG_MSDOS_FS

m

m

CONFIG_NCP_FS

m

m

CONFIG_NFS_FS

m

m

CONFIG_NILFS2_FS

m

m

CONFIG_NTFS_FS

m

m

CONFIG_OCFS2_FS

m

m

CONFIG_OMFS_FS

m

m

CONFIG_PNPBIOS_PROC_FS

y

-

Same as Lucid

CONFIG_PROC_FS

y

y

CONFIG_QNX4FS_FS

m

m

CONFIG_REISERFS_FS

m

m

CONFIG_ROMFS_FS

m

m

CONFIG_SCSI_PROC_FS

y

y

CONFIG_SMB_FS

m

m

CONFIG_SPU_FS

-

m

Same as Lucid

CONFIG_SYSV_FS

m

m

CONFIG_UDF_FS

m

m

CONFIG_VFAT_FS

m

m

CONFIG_VXFS_FS

m

m

CONFIG_XFS_FS

m

m

Security

Option

UBUNTU

PORTS

Comments

CONFIG_CC_STACKPROTECTOR

y

-

CONFIG_COMPAT_BRK

n

n

CONFIG_COMPAT_VDSO

n

-

CONFIG_DEBUG_RODATA

y

-

CONFIG_DEFAULT_MMAP_MIN_ADDR

65536

32768/65536

sparc=32768, all others=65536

CONFIG_DEVKMEM

n

n

CONFIG_LSM_MMAP_MIN_ADDR

0

0

CONFIG_SECCOMP

y

y

CONFIG_SECURITY

y

y

CONFIG_SECURITYFS

y

y

CONFIG_SECURITY_NETWORK

y

y

CONFIG_SECURITY_PATH

y

y

CONFIG_STRICT_DEVMEM

y

-

CONFIG_SYN_COOKIES

y

y

Subsystems

Option

UBUNTU

PORTS

Comments

CONFIG_ACPI

y

y

CONFIG_APM

m

-

CONFIG_BT

m

-

CONFIG_NET

y

y

CONFIG_NETFILTER

y

y

CONFIG_PCI

y

y

CONFIG_SCSI

y

m/y

ia64=m, powerpc=y, sparc=m

CONFIG_USB

y

m/y

armel=m, ia64=y, lpia=y, powerpc=y, sparc=m

Network Protocols

Option

UBUNTU

PORTS

Comments

CONFIG_AF_RXRPC

m

m

CONFIG_ATALK

m

m

CONFIG_ATM

m

m

CONFIG_AX25

m

m

CONFIG_BRIDGE

m

m

CONFIG_CAN

m

m

CONFIG_CFG80211

m

m

CONFIG_DCB

y

y

CONFIG_DECNET

m

m

CONFIG_ECONET

m

m

CONFIG_IEEE802154

m

m

CONFIG_INET

y

y

CONFIG_IP_DCCP

m

m

CONFIG_IP_SCTP

m

m

CONFIG_IPV6

y

m

INCONSISTENT

CONFIG_IPX

m

m

CONFIG_IRDA

m

m

CONFIG_LAPB

m

m

CONFIG_LLC

y

y/m

ports{ia64=y, powerpc=y, sparc=m}

CONFIG_MAC80211

m

m

CONFIG_NET_9P

m

m

CONFIG_NET_DSA

y

y

CONFIG_NETFILTER_NETLINK

m

m

CONFIG_NETLABEL

y

y

CONFIG_NET_SCHED

y

y

CONFIG_PACKET

y

y

CONFIG_PHONET

m

m

CONFIG_RDS

m

m

CONFIG_RFKILL

y

m

INCONSISTENT

CONFIG_STP

m

m

CONFIG_SUNRPC

m

m

CONFIG_TIPC

m

m

CONFIG_UNIX

y

y

CONFIG_VLAN_8021Q

m

m

CONFIG_WAN_ROUTER

m

m

CONFIG_WIMAX

m

m

CONFIG_WIRELESS_EXT

y

y

CONFIG_X25

m

m

CONFIG_XFRM

y

y

New Options

Option

Value

Comments

CONFIG_AB3100_CORE

y

CONFIG_AB4500_CORE

m

CONFIG_ACPI_CMPC

m

CONFIG_AD525X_DPOT

m

CONFIG_ATH9K_DEBUGFS

n

CONFIG_ATH_DEBUG

n

CONFIG_BACKLIGHT_88PM860X

m

CONFIG_BACKLIGHT_ADP5520

m

CONFIG_BACKLIGHT_MAX8925

m

CONFIG_BATMAN_ADV_DEBUG

n

CONFIG_BATMAN_ADV

m

CONFIG_BATMAN_DEBUG

n

CONFIG_BLK_DEV_DRBD

n

CONFIG_BRIDGE_IGMP_SNOOPING

y

CONFIG_BT_ATH3K

m

CONFIG_CAN_MCP251X

m

CONFIG_CAN_PLX_PCI

m

CONFIG_CEPH_FS

n

CONFIG_CFG80211_WEXT

y

CONFIG_CFQ_GROUP_IOSCHED

n

CONFIG_CHELSIO_T4

m

CONFIG_CRYPTO_PCRYPT

n

CONFIG_CRYSTALHD

m

CONFIG_CS5535_MFGPT

n

CONFIG_DEBUG_STRICT_USER_COPY_CHECKS

n

CONFIG_DMADEVICES_DEBUG

n

CONFIG_DRM_VMWGFX

m

CONFIG_DT3155

m

CONFIG_DVB_HOPPER

m

CONFIG_DVB_MANTIS

m

CONFIG_DVB_NGENE

m

CONFIG_DVB_USB_AZ6027

m

CONFIG_DVB_USB_EC168

n

CONFIG_DVB_USB_EC168

m

CONFIG_EEEPC_WMI

n

CONFIG_FB_SM7XX_ACCEL

n

CONFIG_FB_SM7XX

m

CONFIG_GIGASET_CAPI

n

CONFIG_GPIO_ADP5520

m

CONFIG_GPIO_ADP5588

m

CONFIG_GPIO_CS5535

m

CONFIG_GPIO_IT8761E

m

CONFIG_GPIO_MAX7300

m

CONFIG_GPIO_SCH

m

CONFIG_GPIO_TIMBERDALE

y

CONFIG_GPIO_WM8350

m

CONFIG_GPIO_WM8994

m

CONFIG_HID_3M_PCT

m

CONFIG_HID_MAGICMOUSE

m

CONFIG_HID_MOSART

m

CONFIG_HID_QUANTA

m

CONFIG_HID_STANTUM

m

CONFIG_HTC_I2CPLD

y

CONFIG_I2C_SMBUS

m

CONFIG_I2C_XILINX

m

CONFIG_IIO_GPIO_TRIGGER

m

CONFIG_IIO_PERIODIC_RTC_TRIGGER

m

CONFIG_INPUT_88PM860X_ONKEY

m

CONFIG_INPUT_SPARSEKMAP

m

CONFIG_INPUT_TWL4030_VIBRA

m

CONFIG_IPV6_SIT_6RD

n

CONFIG_IP_VS_PROTO_SCTP

y

CONFIG_IWLWIFI_DEVICE_TRACING

n

CONFIG_IWMC3200TOP_DEBUGFS

n

CONFIG_IWMC3200TOP_DEBUG

n

CONFIG_IWMC3200TOP

m

CONFIG_IXGBEVF

m

CONFIG_KERNEL_GZIP

y

CONFIG_KEYBOARD_ADP5520

m

CONFIG_KPROBE_EVENT

y

CONFIG_KSYM_TRACER

n

CONFIG_KSZ884X_PCI

m

CONFIG_LCD_L4F00242T03

m

CONFIG_LEDS_88PM860X

m

CONFIG_LEDS_ADP5520

m

CONFIG_LEDS_INTEL_SS4200

m

CONFIG_LEDS_LT3593

m

CONFIG_LEDS_REGULATOR

m

CONFIG_LIBERTAS_MESH

n

CONFIG_LOGFS

n

CONFIG_LOGIG940_FF

y

CONFIG_LPC_SCH

m

CONFIG_MACVTAP

n

CONFIG_MANTIS_CORE

m

CONFIG_MAX1363_RING_BUFFER

y

CONFIG_MAX63XX_WATCHDOG

m

CONFIG_MAX8925_POWER

m

CONFIG_MFD_88PM8607

y

CONFIG_MFD_88PM860X

y

CONFIG_MFD_MAX8925

y

CONFIG_MFD_TIMBERDALE

m

CONFIG_MFD_WM831X

y

CONFIG_MFD_WM8350_I2C

y

CONFIG_MFD_WM8994

y

CONFIG_MMC_RICOH_MMC

n

CONFIG_MSI_WMI

m

CONFIG_NETFILTER_XT_TARGET_CT

m

CONFIG_NF_CONNTRACK_ZONES

y

CONFIG_NO_BOOTMEM

y

CONFIG_OPTPROBES

n

CONFIG_PATA_TOSHIBA

n

CONFIG_PM_ADVANCED_DEBUG

n

CONFIG_PMIC_ADP5520

y

CONFIG_PPS_CLIENT_KTIMER

n

CONFIG_PPS_CLIENT_LDISC

m

CONFIG_QLCNIC

m

CONFIG_R8187SE

m

CONFIG_RADIO_SAA7706H

m

CONFIG_RADIO_TEF6862

m

CONFIG_RADIO_TIMBERDALE

m

CONFIG_RAMZSWAP

m

CONFIG_RAMZSWAP_STATS

y

CONFIG_RCU_FAST_NO_HZ

n

CONFIG_REGULATOR_88PM8607

y

CONFIG_REGULATOR_DUMMY

n

CONFIG_REGULATOR_MAX8649

m

CONFIG_REGULATOR_MAX8660

m

CONFIG_REGULATOR_MAX8925

m

CONFIG_REGULATOR_WM8994

m

CONFIG_RT2800PCI

n

CONFIG_RT2800USB_RT30XX

n

CONFIG_RT2800USB_RT35XX

n

CONFIG_RT2800USB_UNKNOWN

n

CONFIG_RTC_DRV_BQ32K

m

CONFIG_RTC_DRV_MAX8925

m

CONFIG_RTC_DRV_MC13783

m

CONFIG_RTC_DRV_MSM6242

m

CONFIG_RTC_DRV_RP5C01

m

CONFIG_RTL8192U

m

CONFIG_SAMSUNG_LAPTOP

m

CONFIG_SCA3000

m

CONFIG_SCSI_3W_SAS

m

CONFIG_SCSI_HPSA

n

CONFIG_SCSI_PM8001

m

CONFIG_SENSORS_ADT7411

m

CONFIG_SENSORS_AMC6821

m

CONFIG_SENSORS_ASC7621

m

CONFIG_SENSORS_K10TEMP

m

CONFIG_SENSORS_LIS3_I2C

m

CONFIG_SENSORS_LM73

m

CONFIG_SENSORS_MC13783_ADC

m

CONFIG_SENSORS_TSL2563

m

CONFIG_SENSORS_VIA_CPUTEMP

m

CONFIG_SERIAL_TIMBERDALE

m

CONFIG_SERIAL_UARTLITE

m

CONFIG_SERIO_ALTERA_PS2

m

CONFIG_SND_HDA_INPUT_BEEP_MODE

1

CONFIG_SND_USB_UA101

n

CONFIG_SOC_CAMERA_MT9T112

m

CONFIG_SOC_CAMERA_OV9640

m

CONFIG_SOC_CAMERA_RJ54N1

m

CONFIG_SPI_DESIGNWARE

y

CONFIG_SPI_DW_PCI

m

CONFIG_SPI_XILINX

n

CONFIG_THINKPAD_ACPI_ALSA_SUPPORT

y

CONFIG_TI_DAC7512

m

CONFIG_TOSHIBA_BT_RFKILL

m

CONFIG_TOUCHSCREEN_88PM860X

m

CONFIG_TOUCHSCREEN_DYNAPRO

m

CONFIG_TOUCHSCREEN_MC13783

m

CONFIG_UIO_NETX

m

CONFIG_USB_G_MULTI

n

CONFIG_USB_G_NOKIA

m

CONFIG_USB_GSPCA_BENQ

m

CONFIG_USB_GSPCA_CPIA1

m

CONFIG_USB_GSPCA_OV534_9

m

CONFIG_USB_GSPCA_PAC7302

m

CONFIG_USB_GSPCA_SN9C2028

m

CONFIG_USB_GSPCA_STV0680

m

CONFIG_USB_IP_DEBUG_ENABLE

n

CONFIG_USB_MASS_STORAGE

m

CONFIG_USB_NET_SMSC75XX

m

CONFIG_USB_SERIAL_QCAUX

m

CONFIG_USB_SERIAL_VIVOPAY_SERIAL

m

CONFIG_VGA_SWITCHEROO

n

CONFIG_VHOST_NET

n

CONFIG_VIDEO_CX18_ALSA

m

CONFIG_VIDEO_TLG2300

m

CONFIG_VMIVME_7805

m

CONFIG_WIMAX_IWMC3200_SDIO

y

CONFIG_WM831X_BACKUP

m

CONFIG_X86_DECODER_SELFTEST

n

CONFIG_X86_PCC_CPUFREQ

m

Flavour review

  • Do we really need a virtual flavouor? Or can we drop it and just use the server flavour
  • discuss 64bit kernel for 32bit userspace (apw)

Debian Abstraction

  • discuss debian abstraction changes (apw)

BoF agenda and discussion

Reviewed the rules, some discussion on whether we should enable EXPERIMENTAL

review backlog of experimental
 * we will find that many new things are EXPERIMENTAL and end up disabled by policy, when they move non-EXPERIMENTAL we do not know to re-review them
 * possibly have script to grep for the EXPERIMENTAL flag

Review of filesystems
---------------------
Seems that ECRYPT_FS is onconsistant and should be fixed

Review of security
------------------
These are now all enforces by the new config enforcer, and seem ok

Review of sub-systems
---------------------
LLC and RFKILL are inconsistant and should be sorted out

New Options
-----------
CONFIG_ATH9K_DEBUGFS needs to be on

changes required as below:
 * CONFIG_ECRYPT_FS need to be made consistant
 * CONFIG_USB make consistant
 * CONFIG_SCSI make consistant
 * CONFIG_LLC=y make consistent
 * CONFIG_RFKILL=y make consistent
 * CONFIG_ATH9K_DEBUGFS=y
 * CONFIG_BLK_DEV_DRDB=m (if server has DKMS then it can replace)
   * interlock with server
 * CONFIG_CEPH_FS=m
 * CONFIG_CFQ_GROUP_SCHED=m ?  server team may need this
 * CONFIG_CRYPTO_PCRYPT=m if it can be M
 * CONFIG_EEEPC_WMI=m
 * CONFIG_IWLWIFI_DEVICE_TRACING=y adds trace events
 * CONFIG_IWMC3200TOP_DEBUGFS=y
 * CONFIG_KSYM_TRACER chase to investigate
 * CONFIG_LIBERTAS_MESH=m
 * CONFIG_MMC_RICOH_MMC=m
 * CONFIG_RCU_FAST_NO_HZ=y
 * CONFIG_KSYM_TRACER=y/m
 * CONFIG_LIBERTAS_MESH=m
 * CONFIG_MMC_RICOH_MMC=m
 * RCU_FAST_NO_HZ=y
 * RT2800*=m
 * SCSI_HPSA=m
 * SND_HDA_INPUT_BEEP_MODE=0
 * VGA_SWITCHEROO=m
 * VHOST_NET=m
 * LP#579300 -- disable OSS thingy
 
ACTIONS:
 * change options as above
 * confirm no options from OEM side ??
 * investigate memory stick options and produce proposal [manjo]


Flavour Review
==============
proposal to actually build the -virtual flavour as a real flavour, wuld allow initramfs free boot
 
can we make a 64bit kernel for 32bit
 
is the preempt kernel in use, no real information currently
  * preempt is currently recommended by studio
 
ACTIONS:
  * split it out to a flavour
  * investigate whether we even can make a 64 bit kernel for 32bit [apw]
  * see if studio is using preempt


Debian Abstraction
==================

ACTIONS:
  * pull back abstraction [apw]
  * investigate debian 3.0 [apw]
  

ACTIONS:
 * report on this to ubuntu-devel

CategorySpec

KernelTeam/Specs/KernelMaverickConfigReview (last edited 2010-05-25 00:57:46 by c-76-105-148-120)