Hi Christian, Thank you for your answers.
You are right, you define my application scenario correctly. Now i am trying implement the solution you have suggested me, but I have an error. I place a file in a ram_fs file system and permit access to the file system to a Noux process. I got the following log messages when I tried to access the file from the Noux process. The name of the Noux process is test. Appreciate if someone can help. no RM attachment (READ pf_addr=0 pf_ip=84ad from b2cfd156 test) void Genode::Signal_transmitter::submit(unsigned int): failed - error 4 static void Genode::Pager_object::_page_fault_handler(Genode::addr_t): page fault, thread 'test', cpu 0, ip=84ad, fault address=0x0 Thanks, On Mon, Oct 19, 2015 at 11:34 AM, Christian Helmuth < christian.helm...@genode-labs.com> wrote: > Hello Joseph, > > On Sat, Oct 17, 2015 at 12:31:09PM +0200, Joseph Lee wrote: > > I am running a simple "tz_vmm" example in Genode on imx53 qsb. I have > Noux > > application which runs on top of Noux runtime inside the secure world. I > > wanted to access this Noux applications inside tz_vmm application, > calling > > a function of Noux application from tz_vmm code. But i have no idea how > to > > do that. Could anyone please give me some hint? > > What you're trying to achieve is to run two components (tz_vmm and a > Noux process) and trigger the execution of a function in the Noux > process by the tz_vmm component, right? I fear that my rephrasing does > not make anything more clear in your application scenario but I will > nevertheless try to propose a direction to follow. > > The Noux environment provides a POSIX runtime and POSIX (pthreads etc. > aside) is all about files when it comes to data exchange. So, you may > monitor a file (e.g., via select()) in the program. If you place the > file in a ram_fs and permit access to the file system to both, the > Noux process and tz_vmm, tz_vmm could trigger code execution in the > Noux process by writing into the file that is monitored. This scenario > should also work on any POSIX system where you may implement a > prototype. > > In case I got you wrong, please try to elaborate more on your goals or > give more details about your scenario. > > Regards > -- > 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 > > > ------------------------------------------------------------------------------ > _______________________________________________ > genode-main mailing list > genode-main@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/genode-main >
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