After two months of development, Linus Torvalds announced the release of Linux kernel 3.17. Among the most notable improvements: new system calls getrandom and seccomp, the possibility of accessing the memory via the file descriptor (memfd), support for restricting operations to the file via a handle, which is enabled by default implementation of Render Nodes, support for dma-buf cross-device synchronization, dropped support for architectures POWER3 and rs64.
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In the new version are made about 12 thousand patches from 1300 developers, the size of the patch - 54 MB (changes in the 10605 files, added 653577 lines of code, removed 668166 lines). About 46% of all presented in 3.17 changes associated with device drivers, approximately 18% of the changes have to update the code for specific hardware architectures, 12% associated with the network stack, with 5% file systems and 3% c internal subsystems of the kernel.
1. The easiest way to use the utility KernelUpdate.
2. Open a terminal, copy and run one of the commands according to the architecture of your system/computer, at your own risk:
For 32-bit (single command):
cd /tmp && wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.17-utopic/linux-headers-3.17.0-031700-generic_3.17.0-031700.201410060605_i386.deb http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.17-utopic/linux-headers-3.17.0-031700_3.17.0-031700.201410060605_all.deb http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.17-utopic/linux-image-3.17.0-031700-generic_3.17.0-031700.201410060605_i386.deb && sudo dpkg -i *.deb
cd /tmp && wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.17-utopic/linux-headers-3.17.0-031700-generic_3.17.0-031700.201410060605_amd64.deb http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.17-utopic/linux-headers-3.17.0-031700_3.17.0-031700.201410060605_all.deb http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.17-utopic/linux-image-3.17.0-031700-generic_3.17.0-031700.201410060605_amd64.deb && sudo dpkg -i *.deb
To return to the previous kernel when booting Grub select Previous Linux versions
sudo apt-get purge linux-image-3.17-*