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Shared Memory in tz_vmm demo
by Joseph Lee 14 Apr '16

14 Apr '16

Hi, I used "*dma_alloc_coherent( )"* as described in this thread ( https://sourceforge.net/p/genode/mailman/message/34685275/) to allocate shared memory between the trustzone worlds in the tz_vmm example on i.mx53 qsb. It works well. But my questions is how do we prevent the normal world from modifying this shared buffer while it is being used by the secure world. Thanks in advance for answers. Kind regards, Joseph

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Do packet streams deliver p
by Menno Valkema 13 Apr '16

13 Apr '16

Hi Everyone, Can we expect the packet streams to deliver packets in order to the other component as a FIFO? Thus: can we expect the packet submitted first, to be delivered first at the other component? Also when bursts of packets are send through the packet stream? Thanks, Menno -- Cyber Security Labs B.V. | Gooimeer 6-31 | 1411 DD Naarden | The Netherlands | https://nlcsl.com

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JTAG Debug on the i.MX53 QSB
by João Rocheteau Ramos 12 Apr '16

12 Apr '16

Hello Genode Community, I'm working with Genode in a project and wanted to use a JTAG Debugger with my i.MX53 QSB. Does anybody know any good documentation and have a recommendation? Thank you. Best Regards, João Ramos

2 1

Process migration and persistence
by Daniel Waddington 04 Apr '16

04 Apr '16

Hi Genode world, I'd like to be able to freeze a process (PD or even a vmm), make it persistent, and unfreeze at some later point in time. Does anyone have suggestions/pointers on how to do this? Daniel

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Golang on Genode
by Petar Stupar 04 Apr '16

04 Apr '16

Hi everyone, I'd like to be able to write servers and clients for Genode in Golang. I believe this is currently possible only through gccgo (as I see go is supported by Genode tool-chain) but I'd like to be able to use the native compiler and all of its standard library. I don't think this would be a hard task albeit a bit more involved. First I'd need to port and build an older Golang tool-chain (version 1.3 or 1.4, not sure which of the two is the latest possible) and then bootstrap a newer one. Does this sound about right? What my questions/concerns are: 1. Has there been any previous work done on this or in this direction? 2. Is there any reason why Golang wouldn't be a good choice as a language on top of Genode? Although this seems to me as a very intuitive combination perhaps there are concept/security issues I might have overlooked. 3. Is there any work work being done or work that has been planned already to be done on Genode which could influence the Golang port and it's standard library? I've gone through the Road Map and several things popped out to me which might have some influence like cross-kernel binary compatibility and work to be done on networking stack. 4. Would adding Golang programs into the mix be an issue for the build system? The Genode build system is such a powerful feature and I'd like to think it will be easy and quite natural to integrate it with Golang's build system too, but maybe I'm wrong. I'd be very grateful if I could hear your thoughts and pick your brains before I start. Any suggestions and comments are very welcome. Regards, Peter

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Microkernel Meetup
by Bjoern Doebel 03 Apr '16

03 Apr '16

Hi all, it is time for another meeting of current and former microkernel enthusiasts in Dresden. I prepared a Dudle to find a suitable time: http://dudle.inf.tu-dresden.de/mks-0316/ and will let you know about a location once we settled on a date. Looking forward to your replies! Bjoern

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using picture from Genode Foundations for Thesis
by David Werner 03 Apr '16

03 Apr '16

Hi Genode mailing list, i am currently writing my Bachelor's thesis. Am i allowed to use pictures from "Genode Foundations" Regards, David

2 1

Bare bones child process creation.
by Daniel Waddington 31 Mar '16

31 Mar '16

Hi, I'm trying to do bare bones process creation without using the Child or Process helper classes (I'm toying around with serialization ideas). I tried to construct something similar to http://genode.org/documentation/architecture/process but I can't seem to get it to work (error = exception base not specified on nova32). Does anyone have a small code sample in the vain of http://genode.org/documentation/architecture/process ? Daniel

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Memory protection clarification.
by Daniel Waddington 29 Mar '16

29 Mar '16

Hi, If an application allocates memory from its parent (e.g., from init) - is this memory capability granted or mapped? Assuming a secure kernel and IOMMU, how secure is this memory from access by other processes or the root process? How is memory clean up after application exit/death? (Sorry for the newbie questions, I have some catching up to do). Daniel

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RAM Quota Forwarding
by Nobody III 29 Mar '16

29 Mar '16

I made a service router that subclasses Genode::Root, and I've gotten it to work, but I'm unsure of how to properly implement RAM quota forwarding. How do I implement this?

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