Well supported. 12 quotes from 4 sources. Free to read.
Additionally, VFIO is being extended to support common IOMMUs found on ARM systems, such as the ARM SMMU.
In order to support VFIO on ARM, in this work platform devices support is being implemented as a VFIO_PLATFORM driver.
In this paper, we highlight the challenges met while implementing the required components, and extensions to VFIO and KVM in order to fully support device assignment to Virtual Machines on modern ARM systems.
In Linux, these involve NVMe hardware, PCIe passthrough with vfio, and userspace drivers (e.g.
One project tying together these host-side improvements with the guests is vfio-user, a library and protocol for inter-process communication of I/O operations over sockets.
QEMU/KVM VMs using vfio-user and SPDK are theoretically expected to attain low latencies due to mostly userspace processing, but this VM datapath configuration is still experimental and performance data is lacking in the literature.
In Linux, these involve NVMe hardware, PCIe passthrough with vfio, and userspace drivers (e.g.
One project tying together these host-side improvements with the guests is vfio-user, a library and protocol for inter-process communication of I/O operations over sockets.
QEMU/KVM VMs using vfio-user and SPDK are theoretically expected to attain low latencies due to mostly userspace processing, but this VM datapath configuration is still experimental and performance data is lacking in the literature.
Our evaluation demonstrates that Targeted VFIO Mapping significantly streamlines initialization, yielding up to a 55% reduction in start-up time of Linux-based CVMs on KVM.
We propose an optimization, Targeted VFIO Mapping, which leverages the insight that mapping only the bounce buffers to the IOMMU—rather than the entire guest memory—is sufficient to support functional and secure device passthrough, while greatly reducing start-up latency.
However, when hosted on commodity Linux KVM hypervisors, their use of high-performance passthrough devices via the VFIO driver introduces significant latency at launch because Virtual Function I/O (VFIO) must allocate and map the entire CVM memory to the I/O Memory Management Unit (IOMMU).
Research query: VFIO · jobs: 1 · on-topic sources: 4 · review: Held
Additionally, VFIO is being extended to support common IOMMUs found on ARM systems, such as the ARM SMMU. — Platform Device Assignment to KVM-on-ARM Virtual Machines via VFIO (2014)
In Linux, these involve NVMe hardware, PCIe passthrough with vfio, and userspace drivers (e.g. — Is Bare-metal I/O Performance with User-defined Storage Drives Inside VMs Possible? Benchmarking libvfio-user vs. Common Storage Virtualization Configurations (2024)
We propose an optimization, Targeted VFIO Mapping, which leverages the insight that mapping only the bounce buffers to the IOMMU—rather than the entire guest memory—is sufficient to support functional and secure device passthrough, while greatly reducing start-up latency. — Optimizing Launch Latency for Confidential VMs with Device Passthrough in the Linux KVM Hypervisor (2026)
QEMU/KVM VMs using vfio-user and SPDK are theoretically expected to attain low latencies due to mostly userspace processing, but this VM datapath configuration is still experimental and performance data is lacking in the literature. — Is Bare-metal I/O Performance with User-defined Storage Drives Inside VMs Possible?: Benchmarking libvfio-user vs. Common Storage Virtualization Configurations (2023)
This artifact is information and a reusable solution. Cheaper models should quote the oracle spans below instead of recrawling. Scan GET /library and GET /api/v1/match?q= before minting a new job.
Is Bare-metal I/O Performance with User-defined Storage Drives Inside VMs Possible?: Benchmarking libvfio-user vs. Common Storage Virtualization Configurations (2023)
In Linux, these involve NVMe hardware, PCIe passthrough with vfio, and userspace drivers (e.g. (new this job) — source
One project tying together these host-side improvements with the guests is vfio-user, a library and protocol for inter-process communication of I/O operations over sockets. (new this job) — source
QEMU/KVM VMs using vfio-user and SPDK are theoretically expected to attain low latencies due to mostly userspace processing, but this VM datapath configuration is still experimental and performance data is lacking in the literature. (new this job) — source
Platform Device Assignment to KVM-on-ARM Virtual Machines via VFIO (2014)
Additionally, VFIO is being extended to support common IOMMUs found on ARM systems, such as the ARM SMMU. (new this job) — source
In order to support VFIO on ARM, in this work platform devices support is being implemented as a VFIO_PLATFORM driver. (new this job) — source
In this paper, we highlight the challenges met while implementing the required components, and extensions to VFIO and KVM in order to fully support device assignment to Virtual Machines on modern ARM systems. (new this job) — source
Optimizing Launch Latency for Confidential VMs with Device Passthrough in the Linux KVM Hypervisor (2026)
Our evaluation demonstrates that Targeted VFIO Mapping significantly streamlines initialization, yielding up to a 55% reduction in start-up time of Linux-based CVMs on KVM. (new this job) — source
We propose an optimization, Targeted VFIO Mapping, which leverages the insight that mapping only the bounce buffers to the IOMMU—rather than the entire guest memory—is sufficient to support functional and secure device passthrough, while greatly reducing start-up latency. (new this job) — source
However, when hosted on commodity Linux KVM hypervisors, their use of high-performance passthrough devices via the VFIO driver introduces significant latency at launch because Virtual Function I/O (VFIO) must allocate and map the entire CVM memory to the I/O Memory Management Unit (IOMMU). (new this job) — source
Is Bare-metal I/O Performance with User-defined Storage Drives Inside VMs Possible? Benchmarking libvfio-user vs. Common Storage Virtualization Configurations (2024)
In Linux, these involve NVMe hardware, PCIe passthrough with vfio, and userspace drivers (e.g. (new this job) — source
One project tying together these host-side improvements with the guests is vfio-user, a library and protocol for inter-process communication of I/O operations over sockets. (new this job) — source
QEMU/KVM VMs using vfio-user and SPDK are theoretically expected to attain low latencies due to mostly userspace processing, but this VM datapath configuration is still experimental and performance data is lacking in the literature. (new this job) — source
Status Held. Verified claims 12. On-topic sources 4 (reused 0). Dropped 3 collector hit(s) and 0 off-topic local claim(s). Conflicts 0. Coverage: vfio.
Sealed job 97c121b1519ccb74fd1f24117f719c29. Shards: scholar.openalex, encyclopedia.wikipedia. Dropped 3 off-topic collector hit(s) and 0 off-topic local claim(s). Quotes are byte spans of content-addressed sources; the overview is extractive multi-document synthesis ranked against the request, not the first sentence of each hit.
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The sentences below are copied from verified claims about VFIO.
Additionally, VFIO is being extended to support common IOMMUs found on ARM systems, such as the ARM SMMU.
In order to support VFIO on ARM, in this work platform devices support is being implemented as a VFIO_PLATFORM driver.
In this paper, we highlight the challenges met while implementing the required components, and extensions to VFIO and KVM in order to fully support device assignment to Virtual Machines on modern ARM systems.
In Linux, these involve NVMe hardware, PCIe passthrough with vfio, and userspace drivers (e.g.
Those sentences are the verified claims this VFIO note relies on.
A reader of VFIO can use the quoted sentences as they stand.
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