Here’s what’s new in Linux kernel 4.0.8
As mentioned, Linux kernel 4.0.8 brings numerous improvements to the ARM architectures, as well as minor optimizations for the s390, x86, MIPS, and SPARC architectures. There are also updated drivers for things like CPUFreq, CPUIdle, IOMMU, MMC, KVM (Kernel-based Virtual Machine), USB, and networking (mostly Ethernet).
Additionally, the eighth maintenance release of Linux kernel 4.0 comes with several improvements to the Unix file system (UFS), a fix for a SELinux issue, as well as multiple networking enhancements, especially for the IPv4 and IPv6 protocols.