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2285 discussions

NOUX limitations
by Daniel Waddington 17 Dec '12

17 Dec '12

Hello there, Can someone explain the current limitations of NOUX? I set up my own NOUX package, then tried to call POSIX sleep and got the error "Invalid attempt to create a thread besides main". Why is this? I also see that pthreads are not functional for NOUX. Is there a specific reason for this? Can you tell me what your roadmap for NOUX is? Best, Daniel

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Run two instances of nic_drv
by Ivan Loskutov 13 Dec '12

13 Dec '12

Hi all, I tried to start 2 instances nic_drv. I patched driver for scan next deviceif IO region already mapped and saw second NIC initialisation. But if started two instances nic_drv then driver didn't receive packet from network. I think it caused IRQ handling. How can I solve this issue? Anyone have ideas about it? -- Ivan Loskutov

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live CD + Plan 9
by syd bris 04 Dec '12

04 Dec '12

Hi, When do you think the next live CD demo will be available? The Plan 9 Operating System was recently ported to the Raspberry Pi single-board computer. Meanwhile, Genode now works on the Pandaboard single-board computer. Plan 9 is compatable with the Inferno OS, while Genode works with other novel OSs. So, have you ever considered running the Plan 9 Operating System on Genode? Such multi-porting of Plan 9 could act to revitalise this unique OS - and may give Genode a wider audience.

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running demo on linux problem
by 서재권 04 Dec '12

04 Dec '12

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FOSDEM 2013 - Microkernels / Component-based OSes devroom
by Stefan Kalkowski 03 Dec '12

03 Dec '12

FOSDEM 2013 - Microkernels / Component-based OSes devroom *CALL FOR PARTICIPATION* http://fosdem.org/2013 The developers of several free and open-source component- and/or microkernel-based operating systems will meet at FOSDEM 2013 in Brussels, Belgium and will share a developer room. The devroom is currently looking for content in the form of talks related to the area of component- and/or microkernel-based operating systems. Possible topics include, but are not limited to: * OS introduction to developers of other OS * Subsystems and architecture * Hardware and device drivers * Tools and languages * Release engineering and testing * Experience and learning from mistakes * Technical challenges * Community and life with an OS-project * Academia and education Please send your talk proposal(s) no later than by 2012-12-15 to: microkernel-devroom at lists.fosdem.org Make sure to include the following in your proposal: * title of your talk (will be printed in the FOSDEM booklet) * your full name (will be printed in the FOSDEM booklet) * a short abstract * duration of your talk (please, no longer than 45 minutes) The final devroom schedule (along with accepted talks) will be announced on the above mailing list on 2012-12-22. Moreover, the speakers will be notified via e-mail. The schedule will be also published on the FOSDEM web and in the FOSDEM booklet after 2013-01-10. If you do not want to give a talk yourself, you may still send suggestions for what else you would like to see, or do in the devroom. Please send your suggestions to the above mailing list. The devroom is scheduled for Saturday of February 2. The seating capacity of the room is 74 seats. Any changes will be announced in the above mailing list.

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Announcement: Genode OS Framework version 12.11 released
by Christian Helmuth 29 Nov '12

29 Nov '12

Today, we are happy to announce the new version of the Genode OS Framework, which denotes an important landmark: the ability to build Genode within the Genode environment leaving aside any kind of virtualization. And of course, there a many more improvements to explore in the fresh release: - Self-hosting Genode on Genode - Custom kernel platform - Support for ARM TrustZone - Support for OMAP4 - Support for Freescale i.MX - Device drivers - New device driver environment for the Open Sound System - New OMAP4 GPIO driver - Updated iPXE networking drivers - Platform support - Largely revisited platform support for Linux - NOVA updated and complemented - L4ka::Pistachio updated - Fiasco.OC updated to rev 40, L4Linux updated to rev 25 - Optimizations - lwIP update and performance improvements The whole story is described in the release notes: http://genode.org/documentation/release-notes/12.11 Best regards and enjoy -- Christian Helmuth Genode Labs http://www.genode-labs.com/ · http://genode.org/ https://twitter.com/GenodeLabs · /ˈdʒiː.nəʊd/ Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth

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L2 cache
by Vasily A. Sartakov 28 Nov '12

28 Nov '12

Hi there. Inspired by article about Genode and Pandaboard, we have tried to turn on L2 cache on same board. Two patches are attached. One of them - new L2 features for foc kernel, extracted from linux and u-boot, the other one - small example for testing cache. This example show increasing performance on memory operations with block sized more then L1. ( We made 4 tests: without L2, block size equal L1, block size equal quarter of L2; with L2 for same blocks) Based on this I make assumption what L2 work correct. But USB host driver is stuck on boot. There were problems of opposition L2 and USB, something has changed? Thanks. -- Sartakov A. Vasily

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mke2fs freezes with device-mapper device
by Timur 26 Nov '12

26 Nov '12

Hi! mke2fs with simple block device (l4linux + atapi drv) work's correctly, but if i create encrypted device with cryptsetup, open it (there device mapper file created) and try to create file system (on dm-device) using mke2fs then system freezes(infinitely write to device). I found that problem in fsync call at unix_flush(io_channel channel) function (mke2fs_source/lib/ext2fs/unix_io.c). Help me to solve this problem) .run file attached initrd with cryptsetup - https://github.com/shomich/files/blob/master/initrd.gz -- Galiullin Timur

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How Genode came to the Pandaboard
by Norman Feske 23 Nov '12

23 Nov '12

Hello, for those of you who enjoy experience reports, I have just finished writing up the story about how Genode was ported to the Pandaboard platform: http://genode.org/documentation/articles/pandaboard Cheers Norman -- Dr.-Ing. Norman Feske Genode Labs http://www.genode-labs.com · http://genode.org Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth

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env() function at different places returns different addresses
by jaeyong yoo 19 Nov '12

19 Nov '12

Hello, Genode I'm trying to understand how env() and env()->parent() work from the source code. First, I find the body of env function located at: genode/base/src/base/env/env.cc and looks like this: namespace Genode { /* * Request pointer to static environment of the Genode application */ Env *env() { /* * By placing the environment as static object here, we ensure that its * constructor gets called when this function is used the first time. */ static Genode::Platform_env _env; return &_env; } } env() function looks like, at namespace Genode, it returns the pointer of singleton object _env (static Genode::Platform_env _env). But, when I call env() at different places, it returns different addresses. For instance, - at genode/base/src/core/main.cc - at dde_linux/src/drivers/usb/nic/nic.cc, env() function returns different addresses like the following - at genode/base/src/core/main.cc, it returns 801f01a0 - at dde_linux/src/drivers/usb/nic/nic.cc, it returns 10b716c. For me, it is very strange, because both functions returns the address of a singleton object _env. I think I miss some points and appreciate if you fill the gap. And, one more thing: I was trying to print some debug message at Env *env() function like the following. Env *env() { /* * By placing the environment as static object here, we ensure that its * constructor gets called when this function is used the first time. */ static Genode::Platform_env _env; PDBG("Genode::env() function called"); // my debug message return &_env; } And, when I run the genode, it always halt at core and child init is not running. Do you have any clues? Thanks always, Jaeyong

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