+ Oleksandr Tyshchenko -- Artem ________________________________ From: Alex Bennée <[email protected]> Sent: Wednesday, July 13, 2022 6:39:23 PM To: Trilok Soni <[email protected]> Cc: Stratos Mailing List <[email protected]>; Viresh Kumar <[email protected]>; Mathieu Poirier <[email protected]>; Mike Holmes <[email protected]>; Azzedine Touzni <[email protected]>; Stefano Stabellini <[email protected]>; Christopher Clark <[email protected]>; Arnd Bergmann <[email protected]>; Peter Griffin <[email protected]>; AKASHI Takahiro <[email protected]>; Artem Mygaiev <[email protected]>; Leonardo Garcia <[email protected]>; Randy Linnell <[email protected]>; [email protected] <[email protected]>; Sumit Semwal <[email protected]>; [email protected] <[email protected]>; Wei Liu <[email protected]>; Florescu, Andreea <[email protected]>; [email protected] <[email protected]> Subject: Add Xen support to vmm-reference? (was Re: Call for topics and skipping next weeks sync)
(added xen/rust-vmm to CC) Trilok Soni <[email protected]> writes: > Hello Alex, > > It would be good to check if there is a enough interest to make > "vmm-reference" extended to work w/ Type-1 Hypervisor like Xen. This > will clean-up vmm-reference w/ KVM references, and it will be a good > independent tool to test the new interfaces additions in the rust-vmm. > > https://urldefense.com/v3/__https://github.com/rust-vmm/vmm-reference__;!!GF_29dbcQIUBPA!0uj77Sl-hZVdR69XuAaDLI87ksTktSzE3-q2uL70xlReH_QbkDrjnvdm9fM0E5PeeK5iisOpQTs9Qf79mJWtnJ2Z$ > [github[.]com] We have certainly talked about it before and the we've put in some of the groundwork with the xen-sys crate (https://urldefense.com/v3/__https://github.com/rust-vmm/xen-sys__;!!GF_29dbcQIUBPA!0uj77Sl-hZVdR69XuAaDLI87ksTktSzE3-q2uL70xlReH_QbkDrjnvdm9fM0E5PeeK5iisOpQTs9Qf79mJRsjZzU$ [github[.]com]) which we are using for the xen-vhost-master work. Off the top of my head we would need to work out: - Which additional APIs need implementing for VMM lifecycle management - How the run loop would look - AIUI Hyper-V munges this for rust-vmm by providing a KVM-like ioctl API (POC via CrosVM: https://urldefense.com/v3/__https://github.com/petrutlucian94/crosvm/tree/windows__;!!GF_29dbcQIUBPA!0uj77Sl-hZVdR69XuAaDLI87ksTktSzE3-q2uL70xlReH_QbkDrjnvdm9fM0E5PeeK5iisOpQTs9Qf79mNH1mFFW$ [github[.]com]) - See also https://urldefense.com/v3/__https://github.com/rust-vmm/community/issues/121__;!!GF_29dbcQIUBPA!0uj77Sl-hZVdR69XuAaDLI87ksTktSzE3-q2uL70xlReH_QbkDrjnvdm9fM0E5PeeK5iisOpQTs9Qf79mOE_Kgjx$ [github[.]com] - Would we aim for full independence from the exiting Xen userspace libs? - xen-vhost-master was brought up using them, now slowly being replaced with pure rust I've added it as a discussion topic for the sync call: https://urldefense.com/v3/__https://calendar.google.com/event?action=TEMPLATE&tmeid=NW83NXNsZ2Q1NmF0bTE0dGNkM3Q0YjFrcTlfMjAyMjA4MDNUMTUwMDAwWiBjX2o3bmdpMW84cmxvZmtwZWQ0cjVjaDk4bXZnQGc&tmsrc=c_j7ngi1o8rlofkped4r5ch98mvg*40group.calendar.google.com__;JQ!!GF_29dbcQIUBPA!0uj77Sl-hZVdR69XuAaDLI87ksTktSzE3-q2uL70xlReH_QbkDrjnvdm9fM0E5PeeK5iisOpQTs9Qf79mIAXRpBH$ [calendar[.]google[.]com] It would be great is we could get any interested folks from the rust-vmm and Xen communities to come along to the call. > > ---Trilok Soni > > -----Original Message----- > From: Alex Bennée <[email protected]> > Sent: Wednesday, July 13, 2022 2:16 AM > To: Stratos Mailing List <[email protected]> > Cc: Viresh Kumar <[email protected]>; Mathieu Poirier > <[email protected]>; Mike Holmes <[email protected]>; > Azzedine Touzni <[email protected]>; Stefano Stabellini > <[email protected]>; Christopher Clark > <[email protected]>; Arnd Bergmann > <[email protected]>; Peter Griffin <[email protected]>; > AKASHI Takahiro <[email protected]>; Artem Mygaiev > <[email protected]>; Leonardo Garcia > <[email protected]>; Trilok Soni <[email protected]>; Randy > Linnell <[email protected]>; [email protected]; Sumit > Semwal <[email protected]> > Subject: Call for topics and skipping next weeks sync > > WARNING: This email originated from outside of Qualcomm. Please be wary of > any links or attachments, and do not enable macros. > > Hi All, > > I'll be on holiday (moving house) next week so I won't be able to > chair the Stratos sync meeting. As it is the middle of summer I'm > going to propose we skip next weeks sync and re-convene on the 3rd of > August. Any objections? > > While on the subject of sync meetings are there any topics to discuss. > We've had some discussions on next rust-vmm device to implement but > beyond a vague "maybe virtio-gpu to help with demos" I don't think > we've nailed it down. virtio-can also keeps getting mentioned and > while useful I'm wary it's not pushing our exploration of the > possibilities of virtio further. > > I did a talk at GST22 last week which was an overview of VirtIO and what we > had done so far as well as discussing some future directions. You can see the > talk at: > > > https://urldefense.com/v3/__https://huawei-events.de/en/gsts22-j83dco-vod.htm__;!!GF_29dbcQIUBPA!0uj77Sl-hZVdR69XuAaDLI87ksTktSzE3-q2uL70xlReH_QbkDrjnvdm9fM0E5PeeK5iisOpQTs9Qf79mAohQusR$ > [huawei-events[.]de] > (Day 2 stream, Chapter 6/TS 05:13:00) > > In it potential future areas of exploration where: > > Improve Xen API > ═══════════════ > > • More standard mmap > • direct irqfd/eventfd routing > > Memory Isolation > ════════════════ > > • fat virtqueue > • iommu/grants vs regions > (x-over with pKVM/CCA?) > > Bare metal rust > ═══════════════ > > • re-use exiting VirtIO logic > • but without POSIX layer > > I'd like to get a better steer on what we should focus on next after we've > demoed our existing rust-vmm daemons and the Xen vhost-master work. -- Alex Bennée
