today's leftovers: Linux and Mesa
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Intel User-Mode Instruction Prevention Support Revised For The Linux Kernel
An Intel engineer over the weekend sent out the latest patches for implementing the company's User-Mode Instruction Prevention (UMIP) support within the Linux kernel.
User-Mode Instruction Prevention appears to be on track for upcoming Cannonlake processors and prevents certain instructions from being executed if the ring level is greater than zero. These instructions include the store task register, store machine status word, store global descriptor table, and store interrupt descriptor table. To fend off possible escalation attacks, Intel's UMIP security feature will prevent these instructions from being executed outside of the highest level privileges.
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Mesa 17.3 Features - Vulkan Updates, Better Performance
Mesa 17.3 is due out in the days ahead as the Q4'2017 installment of Mesa 3D for delivering the updated open-source OpenGL and Vulkan driver stacks for Linux and other platforms. As usual, this quarterly update to Mesa introduces a ton of new features, performance improvements, and other enhancements.
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