#pragma section-numbers on
#pragma keywords Linux, Kernel, Operative System, Changes, changelog, File system, Linus Torvalds, Open Source, drivers
#pragma description Summary of the changes and new features merged in the Linux kernel during the 3.4 development cycle



/!\ /!\ /!\ Linux 3.3 has not been released /!\ /!\ /!\

'''''Summary''''': 

[[TableOfContents()]]
= Prominent features in Linux 3.4 =
== Feature ==


= Driver and architecture-specific changes =
All the driver and architecture-specific changes can be found in the [http://kernelnewbies.org/Linux_3.4_DriverArch Linux_3.4_DriverArch page]

= Various core changes =

= Memory Management =

= File systems =

= Networking =
 * New "plug" queuing discipline: allows userspace to plug/unplug a network output queue, using the netlink interface [http://git.kernel.org/linus/  (commit)]
 * Add missing getsockopt for SO_NOFCS. [http://git.kernel.org/linus/  (commit)]
 * Implement IP_UNICAST_IF/IPV6_UNICAST_IF socket options [http://git.kernel.org/linus/  (commit)], implement IPV6_UNICAST_IF socket option. [http://git.kernel.org/linus/  (commit)]

 * Netfilter
  * Add timeout extension [http://git.kernel.org/linus/  (commit)], add cttimeout infrastructure for fine timeout [http://git.kernel.org/linus/  (commit)], 

netfilter: ctnetlink: add NAT support for expectations [http://git.kernel.org/linus/  (commit)]
  * ipset: Exceptions support added to hash:*net* [http://git.kernel.org/linus/  (commit)]
  * Merge ipt_LOG and ip6_LOG into xt_LOG [http://git.kernel.org/linus/  (commit)]

 * Bluetooth
  * Add support for HCI monitor channel [http://git.kernel.org/linus/  (commit)]
  * Implement Read Supported Commands commands for [http://git.kernel.org/linus/  (commit)]
  * Add support for Set SSP command [http://git.kernel.org/linus/  (commit)]
  * Implement Set LE command [http://git.kernel.org/linus/  (commit)]

= Virtualization =
 * hyperv: Add support for vlan trunking from guests [http://git.kernel.org/linus/  (commit)]
 * KVM
  * Allow host IRQ sharing for assigned PCI 2.3 devices [http://git.kernel.org/linus/  (commit)]
  * Infrastructure for software and hardware based TSC rate [http://git.kernel.org/linus/  (commit)]
  * PPC: Paravirtualize SPRG4-7, ESR, PIR, MASn [http://git.kernel.org/linus/  (commit)], e500: MMU API [http://git.kernel.org/linus/  (commit)]
  * s390: add parameter for KVM_CREATE_VM [http://git.kernel.org/linus/  (commit)]
KVM: s390: ucontrol: disable in-kernel handling of SIE [http://git.kernel.org/linus/  (commit)]
KVM: s390: ucontrol: disable in-kernel irq stack [http://git.kernel.org/linus/  (commit)]
KVM: s390: ucontrol: disable sca [http://git.kernel.org/linus/  (commit)]
KVM: s390: ucontrol: export SIE control block to user [http://git.kernel.org/linus/  (commit)]
KVM: s390: ucontrol: export page faults to user [http://git.kernel.org/linus/  (commit)]
KVM: s390: ucontrol: interface to inject faults on a vcpu [http://git.kernel.org/linus/  (commit)]
KVM: s390: ucontrol: per vcpu address spaces [http://git.kernel.org/linus/  (commit)]
KVM: x86: increase recommended max vcpus to 160 [http://git.kernel.org/linus/  (commit)]


= Crypto =
 * caam: add sha224 and sha384 variants to existing [http://git.kernel.org/linus/  (commit)]
 * camellia: add assembler implementation for x86_64 [http://git.kernel.org/linus/  (commit)]
 * Driver for Tegra AES hardware [http://git.kernel.org/linus/  (commit)]
 * crc32: add slice-by-8 algorithm to existing code [http://git.kernel.org/linus/  (commit)]

= Security =
 * AppArmor
  * add "file" details to securityfs [http://git.kernel.org/linus/  (commit)]
  * add initial "features" directory to securityfs [http://git.kernel.org/linus/  (commit)]

= BLock =
 * Device Manager (DM):
  * thin: support discards [http://git.kernel.org/linus/  (commit)]
  * thin: support read only external snapshot origins [http://git.kernel.org/linus/  (commit)]


= Tracing/profiling =


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