Virtualization News Archives
Intel Engineer Proposes Software-Based KVM Protected Memory Extension

While modern AMD EPYC CPUs support Secure Encrypted Virtualization (SEV) and Intel more recently has been working on MKTME for similarly offering hardware-backed total memory encryption, an Intel open-source engineer has now proposed a software-based solution for protected memory support for KVM virtualization.

24 May 2020 - Software Memory Protection - 8 Comments
Simple Patch Lets Amazon's EC2 Linux Network Driver Start ~90x Faster

With how ubiquitous the Amazon Elastic Compute Cloud (EC2) is, one may have assumed that for years the software stack was already extensively optimized to insane levels, especially as it concerns the boot time for being able to quickly respond to changes in load... But it turns out there still is some low hanging fruit such as with Amazon's "ENA" network driver and a new patch allowing it to initialize 90 times quicker.

1 March 2020 - Amazon ENA Driver - 14 Comments
Jailhouse 0.12 Hypervisor Adds Raspberry Pi 4 Support

Siemens continues investing in Jailhouse as a Linux-based simplicity-minded partitioning hypervisor catering to bare metal appliances. Jailhouse 0.12 is out today as their first feature update since last summer and comes with numerous hardware support improvements and new features.

4 February 2020 - Jailhouse 0.12 - 7 Comments
KVM Virtualization Adds Protections For Spectre-V1/L1TF Combination Attack

Following the Xen hypervisor in mitigating against a possible Spectre Variant One and L1 Terminal Fault combination attack, the Kernel-based Virtual Machine (KVM) has added its own protections with the Linux 5.6 kernel on top of all the other mitigations they've had to endure as a result of CPU vulnerabilities over the past two years.

31 January 2020 - Spectre V1 + L1TF - 4 Comments
QEMU 5.0 Kicks Off For Development

Following yesterday's release of QEMU 4.2, the next version of this open-source processor emulator for hardware virtualization entering development is QEMU 5.0.

14 December 2019 - QEMU 5.0 - 9 Comments
VirtualBox SF Driver Ejected From The Linux 5.4 Kernel

Merged to the mainline Linux kernel last week was a driver providing VirtualBox guest shared folder support with the driver up to now being out-of-tree but important for sharing files between the host and guest VM(s). While the driver was part of Linux 5.4-rc7, Linus Torvalds decided to delete this driver on Tuesday.

13 November 2019 - Shared Folder Support - 15 Comments
SUSE Continues Working On Linux Core Scheduling For Better Security

SUSE and other companies like DigitalOcean have been working on Linux core scheduling to make virtualization safer particularly in light of security vulnerabilities like L1TF and MDS. The core scheduling work is about ensuring different VMs don't share a HT sibling but rather only the same VM / trusted applications run on siblings of a core.

11 November 2019 - Core-Scheduling For Virtualization - 3 Comments

414 Virtualization news articles published on Phoronix.