Re: Using virtio-vhost-user or vhost-pci

2020-10-12 Thread Nikos Dragazis
On 12/10/20 10:22 μ.μ., Cosmin Chenaru wrote: Hi, Could you please tell me if there has been any more work on virtio-vhost-user or vhost-pci? The last messages that I could find were from January 2018, from this thread [1], and from what I see the latest Qemu code does not have that included

Re: [PATCH v3] introduce VFIO-over-socket protocol specificaion

2020-07-21 Thread Nikos Dragazis
Hi Thanos, I had a quick look on the spec. Leaving some comments inline. On 17/7/20 2:20 μ.μ., Thanos Makatos wrote: This patch introduces the VFIO-over-socket protocol specification, which is designed to allow devices to be emulated outside QEMU, in a separate process. VFIO-over-socket reuses

Re: Inter-VM device emulation (call on Mon 20th July 2020)

2020-07-17 Thread Nikos Dragazis
On 15/7/20 7:44 μ.μ., Alex Bennée wrote: Stefan Hajnoczi writes: On Wed, Jul 15, 2020 at 01:28:07PM +0200, Jan Kiszka wrote: On 15.07.20 13:23, Stefan Hajnoczi wrote: Let's have a call to figure out: 1. What is unique about these approaches and how do they overlap? 2. Can we focus developm

Re: [PATCH/RFC 0/1] Vhost User Cross Cable: Intro

2020-02-13 Thread Nikos Dragazis
On Tue, 14 Jan 2020 at 10:20 Stefan Hajnoczi wrote: > On Fri, Jan 10, 2020 at 10:34 AM Marc-André Lureau > wrote: > > On Wed, Jan 8, 2020 at 5:57 AM V. wrote: > > Hi V., > I think I remember you from Etherboot/gPXE days :). > > > > 3. > > > Now if Cross Cable is actually a new and (after a code

[Qemu-devel] revising virtio-vhost-user device

2019-04-17 Thread Nikos Dragazis
Hi everyone, as you may already know, there is an experimental feature in QEMU wiki page called “virtio-vhost-user” [1]. Stefan Hajnoczi launched this feature a year ago. He even wrote an RFC implementation [2]. However, this feature is still a WIP. At present, I am working with Dariusz Stojaczyk

[Qemu-devel] Error with Virtio DMA Remapping

2018-10-24 Thread Nikos Dragazis
Hi all, I am trying to use QEMU vIOMMU for virtio DMA remapping. When I run the VM, I get the following messages in stderr: qemu-system-x86_64: vtd_iommu_translate: detected translation failure (dev=01:00:00, iova=0x0) qemu-system-x86_64: New fault is not recorded due to compression of faults qe

[Qemu-devel] vhost: add virtio-vhost-user transport

2018-10-06 Thread Nikos Dragazis
/spdk/2018-March/001557.html Is there anyone in this community currently working on this? What would my next step in contributing this be? Looking forward to your feedback, Nikos -- Nikos Dragazis Undergraduate Student School of Electrical and Computer Engineering National Technical Universi

Re: [Qemu-devel] [SPDK] virtio-vhost-user with virtio-scsi: end-to-end setup

2018-10-06 Thread Nikos Dragazis
Hi Pawel, Thank you for your quick reply. I appreciate your help. I’m sorry for the late response. I am glad to tell you that I have a working demo at last. I have managed to solve my problem. You were right about the IO channels. Function spdk_scsi_dev_allocate_io_channels() fails to allocate t

[Qemu-devel] virtio-vhost-user with virtio-scsi: end-to-end setup

2018-09-20 Thread Nikos Dragazis
in userspace. The virtio-vhost-user device could exploit the   irqfd mechanism of the KVM for this purpose. I will keep you and the   list posted on this, I would appreciate any early feedback you may   have. Looking forward to any comments/feedback/pointers you may have. I am rather inexperienced wi