Kernel update: Virtuozzo ReadyKernel patch 75.0 for all supported Virtuozzo kernels and that of Virtuozzo Infrastructure Platform 2.5¶

1. Overview¶

The cumulative Virtuozzo ReadyKernel patch was updated with stability fixes. The patch applies to all supported Virtuozzo kernels and that of Virtuozzo Infrastructure Platform 2.5.

2. Bug Fixes¶

• It was discovered that CPUID bits OSXSAVE and OSPKE were not updated properly by KVM when the guest system rebooted. As a result, the guest system could crash. (PSBM-93016)

• (Enhancement) Additional diagnostics was introduced to make it easier to detect and analyze skb drops caused by the usage of pfmemalloc reserves. (PSBM-93052)

3. Installing the Update¶

Download, install, and immediately apply the patch to the current kernel by running ‘readykernel update’.

4. References¶

• readykernel-patch-37.30-75.0-1.vl7

• readykernel-patch-40.4-75.0-1.vl7

• readykernel-patch-43.10-75.0-1.vl7

• readykernel-patch-46.7-75.0-1.vl7

• readykernel-patch-48.2-75.0-1.vl7

• readykernel-patch-63.3-75.0-1.vl7

• readykernel-patch-64.7-75.0-1.vl7

• readykernel-patch-73.24-75.0-1.vl7

• readykernel-patch-73.29-75.0-1.vl7

The JSON file with the list of new and updated packages is available at https://docs.virtuozzo.com/vza/VZA-2019-024.json.