Virtualization News Archives
Linux 5.9 Dropping Xen 32-bit PV Guest Support

Back in Linux 5.4 Xen 32-bit PV guest support was deprecated while now for Linux 5.9 it's set to be removed entirely. Last year's deprecation comes with the 32-bit usage dwindling in general but PVH being preferred to PV, Meltdown mitigations not being present, and the code not seeing much activity. Now for Linux 5.9 that support is being gutted.

14 August 2020 - Para-Virtualized Guest - 4 Comments
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

424 Virtualization news articles published on Phoronix.