users January 2015

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31 participants
47 discussions

Re: Roadmap 2015
by unknown＠example.com 06 Jan '15

06 Jan '15

Norman, I think you are right to point to Nix on Noux, and I will make it my next priority. Even if it were practical to reuse legacy package expressions from Nixpkgs it would be much easier if there was a mature Noux Nix running natively rather than going through a lot of cross-compilation and bootstrapping on a Linux host first. Getting Nix to compile should be straightforward, but building and storing outputs will take some consideration and probably a few design iterations to work well on Genode, though I'm certain it will yield some novel improvements over POSIX Nix. I don't yet have any concrete ideas on what changes would be made, but I will know more as I inspect Noux and Nix. Emery On Tue, Dec 30, 2014 at 01:26:11PM +0100, Norman Feske wrote: > > * Adapt the Nix packages collection to build its existing packages for > >Â Â Â Noux. This similar to how packages may be built for Darwin or BSD, > >Â Â I would abort converting Make rules for anything not required for > >Â Â Â bootstrapping a Noux toolchain. > > Even though that sounds intriguing at the first glance, I cannot say > that I regard the porting of Noux packages as a big hurdle right now. So > far, my attempts to port software packages that use the GNU build system > went actually fairly smooth. Personally, I am not so much interested in > a big volume of packages. In my day to day work, only a few packages are > actually used (the most significant gap in this respect is a proper > LaTeX environment). While porting software to Noux, the most prominent > stumbling blocks use to be functionalities missing from our C runtime > (e.g., if a program relies on Unix signals), performance bottlenecks, or > limitations of our terminal (e.g., lack of support for ANSI pseudo > graphics). None of those issues will go away with the switch of Noux > packages to Nix. > > > * Work towards running virtualizing instances of NixOS, building the Genode > >Â Â Â host and the NixOS guest concurrently. > > > > > > I have had success related to virtualizing, I have managed to integrate my > > build expressions with the NixOS system expression on my host machine, > > installing a NOVA scenario to my boot partition and GRUB menu. One could > > obviously do this with a set of scripts calling make, but in this way the > > Genode components are treated as system dependencies just as my linux host > > would treat its system services. > > > > I think the next logical step in this line of thought would be to build my > > Linux host system as an image optimized for Seoul, but I am traveling at > > the moment and virtualizing Seoul scenarios has been slow going with only a > > single laptop. > > That looks interesting and very much in line with the plans I laid out > in my initial posting. But you approach the idea from a different angle. > I am curious where this development is heading. > > As another idea, have you considered to port Nix to Noux? That would > further blur the line between NixOS and Genode. > > Cheers > Norman > > > -- > Dr.-Ing. Norman Feske > Genode Labs > > http://www.genode-labs.com Â· http://genode.org > > Genode Labs GmbH Â· Amtsgericht Dresden Â· HRB 28424 Â· Sitz Dresden > GeschÃ¤ftsfÃ¼hrer: Dr.-Ing. Norman Feske, Christian Helmuth

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recommended hardware
by Tim Newsham 06 Jan '15

06 Jan '15

What laptop hardware do you recommend for using genode? I noticed one of the presentations was done using genode to display slides from a lenovo thinkpad of some sort. Is this what the genode team is using and what they're targeting for daily use? What particular hardware is being targeted? -- Tim Newsham | www.thenewsh.com/~newsham | @newshtwit | thenewsh.blogspot.com

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VBox influences applications running on other CPUs
by Christian Menard 06 Jan '15

06 Jan '15

Hello again, this issue is related to my previous message. My goal is not only to run VBox+Android but also some other secure applications in parallel. Therefore I introduced a small server that multiplexes the Input and Framebuffer session so that it is possible to switch between Android and Nitpicker based on a key stroke. I attached a runscript to illustrate the setup. In my setup VBox+Android are executed on one CPU and everything else runs on another CPU. This SMP setup is necessary as otherwise Android stops booting up. Parallel load during startup of Android seems to have some influence and stops execution of the VM, but so far I could not identify the reason. To the problem: Not only the performance of Android is very bad, but the whole system feels slow and unresponsive. Applications like liquid_framebuffer are significantly slowed down when VBox is running. This happens also when the VM is actually in a halted state. I find it very strange that VBox running on one CPU has such a strong impact on the performance of Apps running on another CPU. It leaves me wondering if there is something wrong with synchronization or the scheduler itself. Do you have any ideas or hints? All best Christian

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tz_vmm on imx6
by chirag garg 06 Jan '15

06 Jan '15

Hi all, I was trying to run tz_vmm script over the imx6 platform. In which i have put Genode OS image (printf script) as a guest OS in the Normal world to test the switching between the Secure world to the Normal world. And the following is the output I am getting.. Starting kernel ... kernel initialized Genode 14.11 int main(): --- create local services --- Inside platform services 0 Inside platform services 1 Inside platform services 2 Inside platform services 3 int main(): --- start init --- int main(): transferred 250 MB to init int main(): --- init created, waiting for exit condition --- [init] Could not open file "ld.lib.so" [init] parent provides [init] service "ROM" [init] service "RAM" [init] service "IRQ" [init] service "IO_MEM" [init] service "CAP" [init] service "PD" [init] service "RM" [init] service "CPU" [init] service "LOG" [init] service "SIGNAL" [init] service "VM" [init] child "tz_vmm" [init] RAM quota: 3932160 [init] ELF binary: tz_vmm [init] priority: 0 [init -> tz_vmm] Start virtual machine ... kernel initialized Genode 14.08 int main(): --- create local services --- int main(): --- start init --- int main(): transferred 509 MB to init int main(): --- init created, waiting for exit condition --- [init] Could not open file "ld.lib.so" [init -> test-printf] -1 = -1 = -1 [init] virtual void Genode::Child_policy::exit(int): child exited with exit value 0 [init -> tz_vmm] The last message on the window is [init -> tz_vmm] and nothing happens after that. Could you please let me know if this is the correct output? Regards Chirag Garg IIT Madras , Rise Lab

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Re: ld.lib.so
by Franc sylvester 03 Jan '15

03 Jan '15

Hi all, Thanks Norman, On Fri, Jan 2, 2015 at 5:13 PM, Norman Feske <norman.feske@...1...> wrote: > Hi Franc, > > thank you for trying out Genode! > > > I was trying to run simple run script printf and following is the output > : > > > > kernel initialized > > Genode 14.11 > > int main(): --- create local services --- > > int main(): --- start init --- > > int main(): transferred 509 MB to init > > int main(): --- init created, waiting for exit condition --- > > [init] Could not open file "ld.lib.so <http://ld.lib.so>" > > [init -> test-printf] -1 = -1 = -1 > > [init] virtual void Genode::Child_policy::exit(int): child exited with > > exit value 0 > > > > As i read "Could not open file ld.lib.so <http://ld.lib.so>" is not a > > error. But i want to demonstrate some example which will not give me > > this error message. > > > > Could you help me to understand this ld.lib.so <http://ld.lib.so> > scenario? > > when started, init tries to obtain the binary of the dynamic linker as a > ROM session. In the simple printf scenario, however, no dynamically > linked binaries are used. So the dynamic linker is not present in the > boot image. The easiest way to silence the message would be to add the > dynamic linker (ld.lib.so) to the boot image by adding the file name to > the 'build_boot_image' step in the run script. > > so I need to add the following in the run script build_boot_image "core init ld.lib.so test-printf",Is it right ? > However, because your scenario does not rely on it, the dynamic linker > is not built automatically. So you'd need to build at least one target > that depends on a shared library. For example, 'test/ldso'. > > As I am new to Genode, I am not able to locate and run "make test/ldso". Actually, I am working base-hw kernel. Can some one help me in that ? Btw, for questions like your's, let me recommend you to post on our > mailing list. This way, you may get assistance from more people than > just me. Also the discussion might be helpful for other people who might > stumble over the same problem in the future. > > Oh yeah, Actually Previously my mails was not delivered in the Genode mailing list, that's why i send you personally. I think, Now this problem has been resolved. > 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 > Regards Franc

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Roadmap 2015
by Norman Feske 03 Jan '15

03 Jan '15

Hello everybody, with New Year in sight, it is time to make up our minds regarding the plans for 2015. Everyone of you is invited to suggest directions that you find worthwhile to pursue - or even better - share your concrete plans with us. I intend to finalize the road map for 2015 by mid of January. Personally, I have three ambitions, namely the use of Genode as general-purpose OS, the base-hw kernel, and the seL4 kernel. Let me briefly revisit each of them. Genode as general-purpose OS ---------------------------- We made big steps for pursuing Genode as general-purpose OS on x86-based platforms. I'd particularly like to highlight the following achievements: * The use of Rump kernels as file-system providers * VirtualBox with support for shared folders and guest networking * Intel wireless stack * New GUI stack That said, even though we are proud about the progress, we are still not there yet. So what keeps us back? I think that the answer is actually not technical. My observation is that each of us developers used to concentrate on individual features or technical challenges. But the integration of sophisticated system scenarios was left to only a few of us. Such integration feats were mainly motivated by a particular project or by a presentation. In order to make Genode fit for regular use, we will first need to make the composing of advanced systems a habit for most of the regular developers. I'd like to keep the topic as first priority in 2015 but concentrate less on features (as I think the feature set for us developers is fairly complete) but more on looking at Genode in a holistic way. I would like to see the following things realized: * A system booting from USB storage, which contains a VirtualBox instance running a regular Linux-based OS besides native Genode components. A shared folder is to be used to bridge both worlds. We start out with working in the guest OS and then successively move functionalities over to the Genode world. Those functionalities are: * Editing text, e.g., using Vim in a Noux environment * Creating and starting Genode configurations on the fly * Using a web browser in Genode * Moving emails to the Genode world * Use the Genode tool chain * Using Git I expect that we will stumble over several small issues and inconveniences on our way, which gives us the right motivation to rectify those things. * A way to easily install and use pre-packaged Genode subsystems. I'd like to remove the burden to compile Qt5 + WebKit for everyone who wants to use a web browser on Genode. * Tools for looking at the system at runtime to identify performance hot spots. I'd love it identify strangely behaving components as easily as running 'top' on Linux. * A solid solution for platform drivers (supporting MSIs and the hot-plugging of devices). I.e., I'd like to access the content of a plugged-in USB stick without the need to reboot the machine. * The evolution of our capability-based desktop environment, driven by our actual requirements stemming from the daily use of Genode. The system should be fun to use and put the user in control at all times. * Making Genode components and libraries binary compatible across different kernels. I see this as a prerequisite to offer binary packages of Genode subsystems. The new dynamic linker introduced in Genode 14.11 is an important step. The next step is the unification of the Genode API across all kernels. Base-hw kernel -------------- In 2014, our base-hw kernel made the transformation from a research vehicle to a feasible base platform for Genode. The past year brought a huge jump in terms of performance, MP support, a clean internal structure, and a new scheduler. In 2015 it will eventually become product-quality software. The only missing element is the support for capability-based security, which is being worked on right now. For base-hw, my wish list looks as follows: * Capability-based security * Integration of our existing ARM virtualization research seL4 kernel ----------- I feel that the seL4 kernel and Genode could complement each other rather well. The use of seL4 as kernel would make Genode very appealing in application areas where both the kernel's formal verification and Genode's broad feature set are desired. From the perspective of the seL4 developers, Genode would represent the first true microkernel-based general-purpose OS running on their kernel. I would hope that, by supporting seL4 as kernel for Genode, we may create an incentive for both developer teams to start collaborating more closely. These are my thoughts. I am looking forward to your ideas and comments. 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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TrustZone Address Space Controller
by Franc sylvester 02 Jan '15

02 Jan '15

Hi all, I have two query to understand Genode basics. I am not able to understand the explanation given for Bitfield at line #140 in repos/base/include/util/register.h " Bitfields are read and written according to their range, so if we have a 'Bitfield<2,3>' and write '0b11101' to it only '0b101' (shiftet by 2 bits) is written." can any body explain me what it means for ? Stefan and Martin, I was trying to understand implemented TZASC driver in Genode for vea9x4 board. can you suggest me some sources which have information used in repos/os/src/server/tz_vmm/vea9x4/tsc_380.h Regards Franc

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users January 2015