- Stratos-dev - op-lists.linaro.org

by François Ozog

Hi I discovered the program and "Safety and Security with Virtual Open Systems" use case is quite interesting: https://www.arm.com/why-arm/technologies/safety?_ga=2.246792964.1846358630.… Cheers FF -- François-Frédéric Ozog | *Director Linaro Edge & Fog Computing Group* T: +33.67221.6485 francois.ozog(a)linaro.org | Skype: ffozog

3 years, 10 months

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Updated invitation: Project Stratos Sync @ Every 2 weeks from 4pm to 5:05pm on Thursday from Thu 6 Aug to Wed 25 Nov (BST) (stratos-dev@op-lists.linaro.org)

by Mike Holmes

This event has been changed. Title: Project Stratos Sync Discuss the latest Project Stratos devlopments.Mailing listhttps://op-lists.linaro.org/mailman/listinfo/stratos-devAgenda - feel free to suggest items on the mailing listhttps://collaborate.linaro.org/display/STR/Meeting+notesPrevious AgendaVirtualization infrastructure enhancements Agenda When: Every 2 weeks from 4pm to 5:05pm on Thursday from Thu 6 Aug to Wed 25 Nov United Kingdom Time (changed) Joining info: Join with Google Meet https://meet.google.com/uak-yrcj-tyd Join by phone (GB) +44 20 3956 3214 (PIN: 706606273) More phone numbers: https://tel.meet/uak-yrcj-tyd?pin=4387074781142&hs=0 Calendar: stratos-dev(a)op-lists.linaro.org Who: * Mike Holmes- organiser * souvik.chakravarty(a)arm.com * Joakim Bech * bogdan.costinescu(a)nxp.com * Anmar Oueja * sreemeno(a)qti.qualcomm.com * tsoni(a)quicinc.com * Tom Gall * pratikp(a)quicinc.com * Sumit Semwal * David Brazdil * François Ozog * ilias.apalodimas(a)linaro.org * Bill Fletcher * svaddagi(a)qti.qualcomm.com * srinivas.kalaga(a)huawei.com * David Rusling * Don Harbin * shashi.mallela(a)linaro.org * atouzni(a)qti.qualcomm.com * randy.linnell(a)linaro.org * Sandeep Patil * matt.spencer(a)arm.com * ruchika.gupta(a)linaro.org * victor.duan(a)linaro.org * bogdan.vlad(a)nxp.com * adelva(a)google.com * peng.fan(a)nxp.com * stratos-dev(a)op-lists.linaro.org * Mathieu Poirier * Alex Bennée * ed.doxat(a)arm.com * Mark Orvek * sramana(a)qti.qualcomm.com * satyakim(a)qti.qualcomm.com Event details: https://calendar.google.com/calendar/event?action=VIEW&eid=NXZzczhsdjNkbTVs… Invitation from Google Calendar: https://calendar.google.com/calendar/ You are receiving this courtesy email at the account stratos-dev(a)op-lists.linaro.org because you are an attendee of this event. To stop receiving future updates for this event, decline this event. Alternatively, you can sign up for a Google Account at https://calendar.google.com/calendar/ and control your notification settings for your entire calendar. Forwarding this invitation could allow any recipient to send a response to the organiser and be added to the guest list, invite others regardless of their own invitation status or to modify your RSVP. Learn more at https://support.google.com/calendar/answer/37135#forwarding

3 years, 10 months

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Cancelled event with note: Project Stratos Sync @ Every 2 weeks from 4pm to 5pm on Thursday (GMT) (stratos-dev@op-lists.linaro.org)

by Mike Holmes

This event has been cancelled with this note: "Moved 1 hour later and out to the 10th of December to avoid Thanksgiving whilst not repeating on top of OpenMP and TF calls." Title: Project Stratos Sync Discuss the latest Project Stratos devlopments.Mailing listhttps://op-lists.linaro.org/mailman/listinfo/stratos-devAgenda - feel free to suggest items on the mailing listhttps://collaborate.linaro.org/display/STR/Meeting+notesPrevious AgendaVirtualization infrastructure enhancements Agenda When: Every 2 weeks from 4pm to 5pm on Thursday United Kingdom Time Joining info: Join with Google Meet https://meet.google.com/uak-yrcj-tyd Join by phone (GB) +44 20 3956 3214 (PIN: 706606273) More phone numbers: https://tel.meet/uak-yrcj-tyd?pin=4387074781142&hs=0 Calendar: stratos-dev(a)op-lists.linaro.org Who: * Mike Holmes- organiser Invitation from Google Calendar: https://calendar.google.com/calendar/ You are receiving this courtesy email at the account stratos-dev(a)op-lists.linaro.org because you are an attendee of this event. To stop receiving future updates for this event, decline this event. Alternatively, you can sign up for a Google Account at https://calendar.google.com/calendar/ and control your notification settings for your entire calendar. Forwarding this invitation could allow any recipient to send a response to the organiser and be added to the guest list, invite others regardless of their own invitation status or to modify your RSVP. Learn more at https://support.google.com/calendar/answer/37135#forwarding

3 years, 10 months

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Re: [Stratos-dev] Stratos meetings at 8AM California / 4PM UK

by Mike Holmes

Another consideration, next week is Thanksgiving in the US, I propose we move the meeting until the week after. MIke On Tue, Nov 17, 2020 at 10:25 AM Mike Holmes via Stratos-dev < stratos-dev(a)op-lists.linaro.org> wrote: > Hi Stefano > > For the Linaro participants, it looks like one hour later is fine. if there > are no objections I will move the meeting tomorrow. > > Mike > > On Mon, Nov 16, 2020 at 10:33 PM Stefano Stabellini < > stefano.stabellini(a)xilinx.com> wrote: > > > Hi all, > > > > I would like to suggest having the Stratos meetings again at 8AM > > California time / 4PM UK time to make it easier for people on the West > > Coast to participate. (So far, we have been meeting mostly at 8AM, > > except for a couple of occurrences.) > > > > Thanks for your help! :-) > > > > Cheers, > > > > Stefano > > > > > -- > Mike Holmes | Director, Foundation Technologies, Linaro > Mike.Holmes(a)linaro.org <mike.holmes(a)linaro.org> > "Work should be fun and collaborative, the rest follows" > -- > Stratos-dev mailing list > Stratos-dev(a)op-lists.linaro.org > https://op-lists.linaro.org/mailman/listinfo/stratos-dev > -- Mike Holmes | Director, Foundation Technologies, Linaro Mike.Holmes(a)linaro.org <mike.holmes(a)linaro.org> "Work should be fun and collaborative, the rest follows"

3 years, 10 months

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[App-services] 2020-10-27 OpenAMP App-services call recording, notes, slides, and action items (fwd)

by Stefano Stabellini

Hi Alex, Arnd, Jean-Philippe, and all, During the OpenAMP App-services call this week WindRiver gave a couple of extremely interesting presentations, see attached slides. Dan Milea discussed the usage of virtio between heterogeneous clusters, i.e. virtio frontends on the Cortex-R cluster and virtio backends on the Cortex-A cluster. They used a setup based on pre-shared memory to make it work, which I believe is similar to the swiotlb approach we discussed in Stratos. They noted that the last version of the virtio spec on github had something in regards to virtio and pre-shared memory regions that might help us cover this use-case from a spec perspective. Dan, would you be able to share a pointer to it for clarity? So far, we acted on the assumption that the virtio spec doesn't allow for this architecture today; it would be fantastic if it turns out that it already does. The other very interesting presentation by Joshua Pincus was about virtio-mmio and MSIs. They did excellent measurements on the performance of virtio-mmio and they found out that the single source of notifications (one interrupt) is the bottleneck. Adding MSIs vastly improved performance. You can see the detailed breakdown on slide #8 of "OpenAMP Virt I/O MMIO w/ MSI". This analysis really points in the direction of adding MSIs to virtio-mmio. Cheers, Stefano ---------- Forwarded message ---------- Date: Wed, 28 Oct 2020 18:41:09 +0000 From: Nathalie Chan King Choy via App-services <app-services(a)lists.openampproject.org> Reply-To: Nathalie Chan King Choy <nathalie(a)xilinx.com> To: "app-services(a)lists.openampproject.org" <app-services(a)lists.openampproject.org> Subject: [App-services] 2020-10-27 OpenAMP App-services call recording, notes, slides, and action items Hi all, The notes from yesterday’s OpenAMP App-services call can be found at: https://github.com/OpenAMP/open-amp/wiki/OpenAMP-Application-Services-Subgr… The link to the Webex recording is in the notes. I am not sure how long before the recordings expire or I will hit my storage limit, so if you need to catch up by watching the recording, please download it in the next couple weeks. Please find attached the slides from Dan & Josh. Action items: * Dan & Josh to send slides (DONE) * Stefano to start a thread w/ the folks who are working on shared memory & VirtIO Best regards, Nathalie C. Chan King Choy Program Manager focused on Open Source and Community -- App-services mailing list App-services(a)lists.openampproject.org https://lists.openampproject.org/mailman/listinfo/app-services

3 years, 10 months

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Update to the virtio interfaces page

by Mike Holmes

Hi All We have some significant updates on the use cases and interest in the virtio interfaces from a mobile perspective. Further insight helping us gather information and thus do the most relevant work appreciated. https://collaborate.linaro.org/display/STR/Virtio+Interfaces -- Mike Holmes | Director, Foundation Technologies, Linaro Mike.Holmes(a)linaro.org <mike.holmes(a)linaro.org> "Work should be fun and collaborative, the rest follows"

3 years, 10 months

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Stratos meetings at 8AM California / 4PM UK

by Stefano Stabellini

Hi all, I would like to suggest having the Stratos meetings again at 8AM California time / 4PM UK time to make it easier for people on the West Coast to participate. (So far, we have been meeting mostly at 8AM, except for a couple of occurrences.) Thanks for your help! :-) Cheers, Stefano

3 years, 10 months

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AGL Demo videos

by Alex Bennée

Hi, I've uploaded a couple of variants of the AGL demo to compare KVM vs Xen Dom0. You can find them on the Linaro fileserver via: https://fileserver.linaro.org/s/wC9AT25Erd5S2Eq They are: 1. agl-arm64-kvm-virtio-gpu-2020-11-10_11.11.55.mkv Recorded on my MachiatoBin machine with KVM enabled. Using entirely stock AGL Jellyfish images. 2. agl-arm64-xen-dom0-virtio-gpu-2020-11-10_11.19.57.mkv Recorded on my developer machine running under QEMU TCG emulation (hence the slowness). The run uses the stock AGL kernel which is why you don't see the messages from the Dom0 kernel console. 3. agl-arm64-xen-dom0-virtio-gpu-custom-kernel-2020-11-10_11.25.44.mkv Same as above, but this time running a stock 5.9 stable kernel which I did a "make olddefconfig" and then enabled the Xen paravirtualised console (which is why you can see the kernel messages on boot up). You can see some services fail to start on boot-up but I suspect those are just timeouts due to the slowness of emulation. You can ssh into it once it's up. As I've mentioned before Dom0 isn't nearly as impressive as running as a DomU image which is still the main goal. That said it certainly shows the image doesn't really care which hypervisor it's being run under. -- Alex Bennée

3 years, 10 months

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Linaro Stratos Call Agenda

by Mike Holmes

Hi All We have an interesting call this week with input from Huawei, Windriver and a discussion on the use of Greybus to solve the i2c, SPI and GPIO virtualization cases. - Salil Mehta - discussion on Huawei's interest in the Stratos project - Dan Milea, Josh Pincus - OpenAMP App-services topics from WindRiver - A couple of slides on Immediate goals, some research, some results, and then immediate next steps - Notes from recent presentations here https://github.com/OpenAMP/open-amp/wiki/OpenAMP-Application-Services-Subgr… - Viresh, Alex Elder, Bill Mills Greybus as a solution for I2C, SPI and GPIO ------ Project Stratos Sync Home page: https://collaborate.linaro.org/display/STR/Stratos+Home <https://collaborate.linaro.org/display/STR/Stratos+Home> Virtual meeting: meet.google.com/uak-yrcj-tyd Thursday, 12 November⋅3:00 – 4:00 pm GMT Every 2 weeks on Thursday Mike -- Mike Holmes | Director, Foundation Technologies, Linaro Mike.Holmes(a)linaro.org <mike.holmes(a)linaro.org> "Work should be fun and collaborative, the rest follows"

3 years, 10 months

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Re: [Stratos-dev] Xen cards (STR-19 and STR-20)

by Stefano Stabellini

Hi Alex, Thank you for doing this. I am looking forward to STR-20, I have been wanting a clean-up in that area for years. Also STR-19 is well worded and looks mostly fine. I only have a comment on the last statement: > QEMU should also be able to act as the stub setup to pass IOREQ events > to a separate vhost-user daemon as a stepping stone to a future Xen > aware vhost-user stub program. Xen can actually have multiple IOREQ servers running for the same domain. Given that the code for receiving IOREQs is minimal and easily portable, it would be better to make any other daemon a proper IOREQ server talking to Xen directly, rather than having to go via QEMU. The architecture would look cleaner and would lead to far better performance, removing a step in the hot path. In other words I think the vhost-user daemon should be run as its own IOREQ server. On Wed, 4 Nov 2020, Alex Bennée via Stratos-dev wrote: > Hi Stefano, > > I've re-written STR-19 (https://projects.linaro.org/browse/STR-19) now I > have a hopefully better understanding of the relationship between IOREQ > backends and how QEMU is launched with Xen. I see this approach as a > stop-gap for testing additional virtio devices. Eventually we need to > specify a new card for a Xen aware vhost-user launching stub that will > link our hypervisor agnostic user-space daemons to the Xen specific > virtio instance. I think we can hold off on that until we have a better > idea of the sort of interface Xen and other type-1's need to provide for > them. > > I've also raised STR-20 (https://projects.linaro.org/browse/STR-20) to > cover the work to fix up the current build and allow for using a leaner > native qemu-system-aarch64 to be used instead of qemu-system-i386 and > it's additional baggage. I have patches in train for that which I'll > post soon. > > Could you have a look over both for any obvious snafus? > > -- > Alex Bennée > -- > Stratos-dev mailing list > Stratos-dev(a)op-lists.linaro.org > https://op-lists.linaro.org/mailman/listinfo/stratos-dev >

3 years, 10 months

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