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

432 Virtualization news articles published on Phoronix.