Get the latest tech news
Linux 6.17 KVM Additions Include Intel LKGS From FRED, Smarter AMD SEV Cache Flushing
The KVM feature changes were merged a few days ago with all of their enhancements for the in-development Linux 6.17 kernel
There are also improvements around the MMIO stale data mitigation, advertising support for Load Kernel GS base "LKGS" as part of FRED, and various other common KVM x86/x86_64 enhancements. KVM specific to AMD processor support includes disabling IPI virtualization on CPUs specific to a particular erratum to allow safely enabling AVIC on Zen 1 / Zen 2 processors, fixing various bugs, dropping an unneeded WBINVD on all CPU cores when destroying a VM, and when reclaiming memory from an SEV guest to only do cache flushes on CPUs that have been used by that particular guest to avoid unnecessarily flushing caches for CPUs that haven't even dealt with a particular VM. KVM on RISC-V also saw some changes, including improvements around the MMU code in working toward nested virtualization support.
Or read this on Phoronix
