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hello_rumprun app not worked
by MOHAMAD REZA SHAFIEI 18 Apr '25

18 Apr '25

hi. i'm recently worked on sel4 with camkes framework. when i compile rumprun_hello on x86_64 platform its compiled and build correctly but when run with qemu by ./simulate script, program crashed with this errors: simple_get_extended_bootinfo_length@simple.h:600 simple_get_extended_bootinfo_length not implemented FAULT HANDLER: data fault from hello.hello_0_control (ID 0x1) on address 0x8, pc = 0x402b7f, fsr = 0x6 FAULT HANDLER: Register dump: FAULT HANDLER: rip :0x402b7f , . . so i found that this method not implemented yet so i return 0 in this method and resolved. for second problem that cause failure if trace program and i found that in "init rumprun" process the program failed in the /projects/sel4runtime/include/sel4_arch/x86_64/sel4runtime/thread_arch.h file and sel4runtime_set_tls_base method. so i read git log and in recently commit your team use sel4runtime for thread TLS, so when we run rumprun_hello, the program failed in sel4runtime_set_tls_base method. can you help me fix this bug? thanks for your attention. -- This email was Anti Virus checked by Security Gateway.

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Issue when running rumprun_hello app from the CAmkES manifest
by dinukaamarasinghe817＠gmail.com 18 Apr '25

18 Apr '25

Hello all, mostly Kent, When I run the rumprun_hello app that's included in the CAmkES manifest, I encounter the following runtime errors: [...] Booting all finished, dropped to user space simple_get_extended_bootinfo_length@simple.h:608 simple_get_extended_bootinfo_length not implemented vka_cspace_alloc@vka.h:149 Unimplemented vka_alloc_object_at_maybe_dev@object.h:47 Failed to allocate cslot: error -1 init_rumprun@entry.c:306 [Cond failed: res != 0] Failed to allocate notification object This seems related to the simple->extended_bootinfo_len callback not being implemented, which causes downstream failures in object allocation (e.g. notification object). This issue appears specifically when running Rumprun-based apps. Would appreciate any insights or suggestions on how to resolve or properly set up this functionality. Note that i haven't modified any of the code here. Just tried to run the existing 'rumprun_hello' application.

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Re: Register for the seL4 summit 2025
by Vasily A. Sartakov 15 Apr '25

15 Apr '25

Dear all, > Thanks for the info! A quick question for clarification: What is the difference between the Professional and the Hobbyist registration type? (Sorry if this is obvious to someone, but I'm unable to find an explicit explanation anywhere.) I guess, If you pay out of your own pocket, you are an enthusiast. if it is sponsored by your employer, you are a professional. — Dr.-Eng. V. A. Sartakov

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Register for the seL4 summit 2025
by Birgit Brecknell 14 Apr '25

14 Apr '25

The seL4 summit 2025 [0] will be held in Prague, Czech Republic, 3 - 5 September 2025. The seL4 summit will cover the complete seL4 ecosystem, consisting of the verified microkernel, as well as all seL4-related technology, tools, infrastructure, products, projects, and people. Tickets include: - Participation in the 3-day conference, including talks, keynotes, seL4 updates & discussions - Networking with other seL4 experts and enthusiasts - Reception and dinner Register here [1] The early bird cut-off date is 3 August 2025. A number of informal social activities will be organised by the seL4 community for Tuesday 2 Sep 2025. Stay tuned for more info! [0] https://sel4.systems/Foundation/Summit/2025/ [1] https://events.linuxfoundation.org/sel4-summit/register/ Birgit Brecknell seL4 Foundation Project Coordinator Sydney, Australia Mon 9-5 Wed 2-5 Fri 9-5 birgit(a)sel4.systems <mailto:birgit@sel4.systems> bbrcknl(a)gmail.com <mailto:bbrcknl@gmail.com>

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DKernelSkimWindow=off
by Sanyou 14 Apr '25

14 Apr '25

Hi, I am testing sel4 on real Sanyou> x86 board now. I found that if we use parameter DKernelSkimWindow=off, we can see nothing on the uart. Can you give me any advice. Regards, Sanyoo

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seL4 Summit 2025: one week to go to submit a talk
by Birgit Brecknell 14 Apr '25

14 Apr '25

One week to go to submit a talk [0] for the seL4 Summit 2025 [1]! If you’d like to submit a talk, please upload an abstract of one page or less to the submission portal [2]. **Abstracts are due on 21 April 2025.** Also note the open invitation for a 5-minute slot to talk about your seL4 deployment [3]. The seL4 Summit 2025 will be held 3 - 5 September 2025 at the Grandior Hotel Prague, Prague, Czech Republic. The summit will be an in-person event. Registration details to follow soon. We’re looking forward to many exciting proposals! [0] https://sel4.systems/Foundation/Summit/2025/cfp [1] https://sel4.systems/Foundation/Summit/2025/ [2] https://form.jotform.com/250436091673861 [3] https://sel4.systems/Foundation/Summit/2025/cfp#sel4-deployment Birgit Brecknell seL4 Foundation Project Coordinator Sydney, Australia Mon 9-5 Wed 2-5 Fri 9-5 birgit(a)sel4.systems <mailto:birgit@sel4.systems> bbrcknl(a)gmail.com <mailto:bbrcknl@gmail.com>

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seL4 developer hangout reminder
by Birgit Brecknell 14 Apr '25

14 Apr '25

Hi all A friendly reminder that the seL4 developer hangout is on again this week. Tue 15 Apr, 10:00pm UTC. For your local date and time please see https://sel4.systems/contact/. Zoom link: https://unsw.zoom.us/j/82640784431 Birgit Brecknell seL4 Foundation Project Coordinator Sydney, Australia Mon 9-5 Wed 2-5 Fri 9-5 birgit(a)sel4.systems <mailto:birgit@sel4.systems> bbrcknl(a)gmail.com <mailto:bbrcknl@gmail.com>

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Running seL4 on bare-metal x86_64 PC
by saftab.rashid＠gmail.com 10 Apr '25

10 Apr '25

Hi, I am very new to sel4 and I am trying to run it bare-metal on an Intel Xeon x86_64 machine. I am following the instructions here PC99 | seL4 docs. I can run seL4 using the ./simulate script which runs the kernel under QEMU. However, I would like the run seL4 natively on my machine. After the build, I have the following images in the images/ directory. kernel-x86_64-pc99 sel4test-driver-image-x86_64-pc99 I have created a Grub2 menu entry by copying these images under /boot. However, when I boot using the created menu entry I get a black screen and I also see no output on the serial port. My Grub2 menu entry is as follows menuentry “Load seL4 VM” --class os { load_video insmod gzio insmod part_msdos insmod ext2 set root=‘(hd0,msdos2)’ multiboot /boot/kernel-x86_64-pc99 module /boot/sel4test-driver-image-x86_64-pc99 } I have also tried the multiboot2 protocol as I have an UEFI-supported system but it also doesn’t work. After booting into the seL4 VM I get a black screen and there is no output on the serial port. Any Idea what I am doing wrong?

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Interactions between sDDF and libvmm
by Julia Royer 09 Apr '25

09 Apr '25

Hello, I am currently exploring libvmm and sDDF and I have a question regarding how sDDF is intended to be used in practice. From what I understand, sDDF is often seen in conjunction with libvmm in examples and documentation. My question is: Is sDDF meant to be used exclusively with libvmm, or can it also be used independently? If the latter is possible, is it considered a recommended or meaningful use case, or is the project mainly designed around integration with libvmm? Thank you for your help. Best regards, Julia Royer

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seL4 Summit 2025: two weeks to go to submit a talk
by Birgit Brecknell 07 Apr '25

07 Apr '25

Two weeks to go to submit a talk [0] for the seL4 Summit 2025 [1]! If you’d like to submit a talk, please upload an abstract of one page or less to the submission portal [2]. **Abstracts are due on 21 April 2025.** Also note the open invitation for a 5-minute slot to talk about your seL4 deployment [3]. The seL4 Summit 2025 will be held 3 - 5 September 2025 at the Grandior Hotel Prague, Prague, Czech Republic. The summit will be an in-person event. Registration details to follow soon. We’re looking forward to many exciting proposals! [0] https://sel4.systems/Foundation/Summit/2025/cfp [1] https://sel4.systems/Foundation/Summit/2025/ [2] https://form.jotform.com/250436091673861 [3] https://sel4.systems/Foundation/Summit/2025/cfp#sel4-deployment Birgit Brecknell seL4 Foundation Project Coordinator Sydney, Australia Mon 9-5 Wed 2-5 Fri 9-5 birgit(a)sel4.systems <mailto:birgit@sel4.systems> bbrcknl(a)gmail.com <mailto:bbrcknl@gmail.com>

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