Hi Martin, based on the commits you mentioned, I implemented a minimal kernel module, which should receive the interrupts injected by genode.
Overall it works: My Handler gets called when I trigger a software interrupt in genode. However, the handler is called endlessly for a single interrupt. I assume, i have to clear the interrupt somehow. I called tzic_end_sw_irq(..) before returning from the handler. Here is my code: http://pastebin.com/NDBV6qYf Any Hints? David On 06/29/2015 12:05 PM, Martin Stein wrote: > Hi David, > > On 29.06.2015 09:20, Stefan Kalkowski wrote: >>> So, my approach would be using software interrupts which sould be routed >>> to the normal world. I played around with the svc (supervisor call) >>> instruction, but I don't know how to route this to the secure world. >> >> Indeed, this seems to be the most promising approach triggering a >> software interrupt on the secure side, and handle it in the normal >> world. Everything that needs to be done is marking a designated SPI (ARM >> terminology for software-triggered IRQ) as a non-secure interrupt, and >> delegate that interrupt to your kernel module within the guest OS. >> Moreover, you will need to extend the VM session interface with the >> ability to trigger that designated "TrustZone interrupt", as the >> user-level VMM is not able to access the interrupt controller directly, >> which has to be done by the kernel itself. > > On my working branches [1] I've implemented IRQ injection to provide a > pseudo block device in a non-secure linux guest. Maybe this code gives > you some good hints. Especially the linux commits [2] and the Genode > commits [3] should be interesting. Please be aware that this code is > still in progress and should not be considered as final solution. > > Don't hesitate to ask if you have further questions ;) > > Cheers, > Martin > > [1] > https://github.com/m-stein/genode/tree/1497_usb_armory_demo > https://github.com/m-stein/linux/tree/1497_usb_armory_demo > > [2] > 0fa1c63 .handle multiple replies and end interrupt > 9ca75d0 .injected IRQ reaches the stub-block handler in linux > > [3] > 08a3b09 .prototype of inject_vm_irq kernel call > 2927f04 .Vm_session::inject_irq(unsigned irq) > 42865c4 .injected IRQ reaches the stub-block handler in linux > > ------------------------------------------------------------------------------ > Monitor 25 network devices or servers for free with OpManager! > OpManager is web-based network management software that monitors > network devices and physical & virtual servers, alerts via email & sms > for fault. Monitor 25 devices for free with no restriction. Download now > http://ad.doubleclick.net/ddm/clk/292181274;119417398;o > _______________________________________________ > genode-main mailing list > genode-main@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/genode-main > -- M.Sc. David Goltzsche Institute of Operating Systems and Computer Networks Distributed Systems Group TU Braunschweig www: https://www.ibr.cs.tu-bs.de/users/goltzsch mail: goltzs...@ibr.cs.tu-bs.de ------------------------------------------------------------------------------ _______________________________________________ genode-main mailing list genode-main@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/genode-main
