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Stefano Garzarella

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A Linux Bus for SVSM Services: Build New, Reuse VIRTIO, or Both?Linux Plumbers Conference 20252025-12-11
Proposal compares three architectures for exposing SVSM services to guests: a new minimalist kernel bus, reusing VIRTIO, or a hybrid. Key specifics: SVSM…
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ublk virtual block devices in user spaceDevConf.CZ 20232023-06-16
ublk moves virtual block device emulation into user space by forwarding Linux block requests over shared memory and io_uring passthrough commands, with the…
Talk on
QEMU-Storage-Daemon and libblkio: Exploring New Shores for the QE...KVM Forum 20222022-09-12
qemu-storage-daemon moves the QEMU block layer into a separate process to provide qemu-storage-daemon exports (NBD, FUSE, vhost-user-blk, vhost-vdpa), enable…
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vdpa-blk: Unified Hardware and Software Offload for virtio-blkKVM Forum 20212021-09-15
Proposal builds a unified virtio-blk offload using the vDPA framework, reusing QEMU and kernel code so the same stack supports hardware accelerators and a…
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Leveraging virtio-vsock in the cloud and containersFOSDEM 20212021-02-06
A communication channel for isolated workloads VM sockets (vsock) enable communication between hosts and VMs. The vsock use cases have grown over the recent…
Talk
Speeding Up VM’s I/O Sharing Host's io_uring Queues With GuestsKVM Forum 20202020-10-28
Demonstrates a working proof‑of‑concept that shares host io_uring queues by mapping SQ/CQ mapped in guest memory and using an eventfd plus io_uring restriction…
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VSOCK: VM ↔host socket with minimal configurationDevConf.CZ 20202020-01-24
AF_VSOCK offers a POSIX sockets API between VM and host using a virtio device that needs only a guest CID assigned on the host while the guest requires no…
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