The YotaPhone is a smartphone from Yota Devices Ltd., a Russian company that also manufactures a portable LTE router called Ruby.
YotaPhone is an Android smartphone, running Android 4.2.2 Jelly Bean. But it’s different from other smartphones (Android and otherwise) in that it comes with a dual screen (it’s a double-display smartphone). On the front is a 4.3-inch, HD LCD display and on the back is an e-ink display that’s also 4.3 inches.
CentOS firmly sits in the stable category of Linux releases – packages are rarely the the very latest versions, the kernel used is much older and it even still has GNOME 2 as its desktop environment, all in the name of cutting down on bugs. While it is stable and capable of running on older tech, it isn’t as resource friendly as distros specifically geared towards being lightweight. Especially if you pick up the full DVD image of the distro, clocking in at nearly 2 GB, which carries multiple desktop environments and a lot of default apps.
You can get the ISO Live images from the Mint 16 Download page but please remember, at the time of this writing, the KDE and Xfce versions are still 'release candidates', the final versions will appear sometime in the next few days or weeks.
The images are fairly large, ranging from just over 1.2GB to just under 1.5GB, so they will certainly not fit on a CD, they require either a DVD or a 2GB or larger USB stick. These are hybrid images, so if you already have a Linux system you can simply dd them to a USB stick; otherwise you can use the windows Image Writer to accomplish the same task. For details on this, Clem has written a very concise How to install Linux Mint via USB tutorial.
The Xen Wiki describes the new PVH virtualization mode as, "essentially a PV guest using PV drivers for boot and I/O. Otherwise it uses HW virtualization extensions, without the need for emulation. First patches are going into xen-unstable just after the Xen 4.3 release and functionality should be at least available as a pre-view in Xen 4.4. PVH has the potential to combine the best trade-offs of all virtualization modes, while simplifying the Xen architecture."
But with all of that being said, there are some things glaring back at us, things that need to be fixed, things that should have been fixed a long time ago. These problems or shortcomings in the Linux system aren’t really too hard to fix. The same tight-knit community that assumes someone else will fix it is the same tight-knit community that needs to pay attention to these problems.
While we've already seen many AVX/AVX2 Linux kernel patches in recent months out of Intel's Open-Source Technology Center, there's still more ahead. The latest patches were published on Wednesday and provide an AVX and AVX2 version of AESNI-GCM encode/decode. Writing the specific code for the Advanced Vector Extensiuons is worthwhile as the reported performance gains can be nearly a 20% speed-up and the beenefits will be even greater on the upcoming Intel Broadwell processors.
The point of a port knock tool is to make TCP servers respond to TCP SYN request only after a pre-defined sequence of packets have been sent and received. It’s like having a club house whose doors open only after a set number and sequence of knocks. There have been tools like in the past, but as far as I know, all have been in user space. Knock is thus likely the first port knock tool for Linux in kernel space.