Updating to a new linux kernel
When a system call interface has a flag parameter, new kernels often expose the new functionality with a new bit flag.
This way kernel maintains backwards compatibility to old applications.
If more than a couple of weeks/months have past since you last rebuilt everything, you first install a snapshot and rebuild from there (if you're following the most current CVS branch).
Having an out of sync kernel, base system and/or 3rd party packages is a potential source of issues and more or less disqualifies you from getting any serious help from the official mailing lists. In fact, this is one of the reasons I use Open BSD.
I want to update the kernel to the latest version or atleast kernel-3.10.0-514.13.1.el7 .
Current it shows the below kernel version in aws server. Want to update the kernel version atleast kernel-3.10.0-514.13.1.el7 Will "yum -y update kernel" update to a latest kernel uname -sr Linux 3.10.0-327.28.2.el7.x86_64 cat /etc/*release Cent OS Linux release 7.2.1511 (Core) NAME="Cent OS Linux" VERSION="7 (Core)" ID="centos" ID_LIKE="rhel fedora" VERSION_ID="7" PRETTY_NAME="Cent OS Linux 7 (Core)" ANSI_COLOR="0;31" CPE_NAME="cpe:/o:centos:centos:7" HOME_URL="https:// BUG_REPORT_URL="https://bugs.centos.org/" CENTOS_MANTISBT_PROJECT="Cent OS-7" CENTOS_MANTISBT_PROJECT_VERSION="7" REDHAT_SUPPORT_PRODUCT="centos" REDHAT_SUPPORT_PRODUCT_VERSION="7" - If you don't have one then have a look at; will give you instructions on how to add and enable the enterprise linux repo and enable the kernel section.
Kernel updates help a lot (for example, my wifi card wasn't recognized in the ancient kernel-using Cent OS, but worked fine under Ubuntu and Fedora, which both have newish kernels), fix weirdness, kind of like bios updates, improve performance a bit, etc.Add to this the fact that some even compile custom kernels (which is discouraged on Open BSD), and have a multitude of various kernel versions listed in their boot menus.Who or what guarantees that the various subsystems of a Linux system are able to cooperate with each other even though they are updated independently from each other?Kernel-ml also has the firmware, headers and libs files.yum info kernel-ml Name : kernel-ml Arch : x86_64 Version : 4.11.1 Release : 1.el6.elrepo Size : 184 M Repo : installed From repo : elrepo-kernel Summary : The Linux kernel.