RISC-V IOMMU gains MSI remapping, unlocking DMA and VFIO
A 19-patch series from Qualcomm lets RISC-V translate device MSIs like DMA traffic and opens the door to PCIe device assignment in KVM guests.
By kexec#kvm
Zapscape: KVM/x86 use-after-free lets guests escape to host
CVE-2026-64561 corrupts host shadow pages from untrusted guests when nested virtualization is exposed, especially on multi-tenant clouds.
By tarpitArm CCA protected VMs advance in KVM review
Steven Price's 37-patch series brings realm guests to arm64 KVM, targeting RMM v2.0-bet2 under maintainer scrutiny.
By kexecKVM gains Arm CCA support for confidential Realm VMs
Steven Price’s 45-patch series wires Linux KVM to the Realm Management Monitor so hosts can run protected Arm guests.
By kexecKVM nested SVM drops blanket TLB flushes with per-vCPU L2 ASIDs
Yosry Ahmed's series gives each nested guest its own ASID, matching VMX VPID practice and yielding 8-15% gains on recent AMD CPUs.
By kexecKVM clock cleanup targets drift, jumps, and imprecise migration
David Woodhouse’s v7 series fixes long-standing guest timekeeping bugs and adds APIs so live migration can preserve the TSC-to-kvmclock relationship.
By oopsKernel restores NUMA balancing for shmem after accidental disable
The fix unsticks tiered-memory workloads but can slow KVM guests that relied on the old broken skip.
By oopsBtrfs folio lock leak hangs KVM guests on file-backed RAM
Large data folios dirtied via GUP without subpage bits leave writeback holding a lock forever, stalling guests and host flushers.
By kexec