Exploring the Features and Enhancements of Linux 4.9（linux4.9）
Linux has been a popular choice for operating systems among developers and users for years. The recently released version, Linux 4.9, comes with a lot of new features and enhancements that make it an even more attractive option. In this article, we will explore some of these features and enhancements and see how they can benefit users.
1. Ext4 Encryption Support
The Ext4 file system used by Linux can now support encryption, providing a safer way to store sensitive data. This feature encrypts files, directories, and the file system metadata, making it almost impossible for attackers to access or tamper with the data without the encryption key.
To enable encryption for Ext4, users need to include the relevant options when creating a new file system, or they can create encryption-enabled files and directories using eCryptfs.
2. Additions to Linux Security Modules (LSM)
The newest version of Linux also supports several new LSMs that enhance its security. This includes the Integrity Measurement Architecture (IMA), which protects the kernel and system files from modifications. Another is the Landlock LSM, which creates sandboxes or containers to isolate applications from one another for added security.
3. AMDGPU Driver enhancements
Linux 4.9 comes with enhancements to the AMDGPU driver, which directly affects AMD GPU users. This update offers better performance and feature support for the Radeon RX 480 and other newer AMD graphics cards. It also brings in support for DisplayPort 1.3 and 1.4, which enables better aspects ratios, resolutions, and refresh rates.
4. Support for ARM-Based Chips
Linux 4.9 offers better support for ARM-based chips, which makes it an ideal choice for developers working with embedded systems or mobile devices. The update adds support for the Qualcomm Snapdragon 820, Huawei Kirin 960, and other new ARM-based chipsets.
5. Virtual Socket Multi-Threading
Linux 4.9 also comes with Virtual Socket Multi-Threading (VMT), a new framework that can improve performance in key areas such as data centers. This feature allows multiple virtual CPUs to share a physical CPU core, thereby reducing the number of CPU cores required to run multiple virtual machines. This, in turn, can cut down power consumption and costs, leading to cost savings for companies.
Conclusion
While these are some of the most prominent updates to Linux in version 4.9, there are many other features and enhancements that make this operating system more robust, reliable, and versatile. As always, Linux continues to be an open-source project, making it a collaborative effort of developers, contributors, and users worldwide.
As we see, Linux 4.9 is a step forward in terms of improved security, support for newer hardware, and enhanced functionality, making it an ideal choice for developers and users who demand the best from their operating systems. Because it is free and open-source, it is accessible to everyone, and anyone can contribute by testing, suggesting new features, or contributing code.
