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I need help porting camkes/arm/vmm to new hardware
by Michael DeFrancis 14 Sep '17

14 Sep '17

To the sel4 development community: I am working on porting the sel4 virtual machine from the tk1 to a variety of arm hardware platforms, starting with the Xilinx parts listed below - and I could use some help getting started. I have the following hardware: - Tegra tk1 - Xilinx zynq7000 (zc706) - Xilinx zynq9000 (zcu102) I am successfully ported the 64 bit sel4 kernel to run on the zynq9000, but now I need to port the arm/vmm to run on the zynq9000 hardware as well. I am happy to share these updates with the sel4 community at large. I am uncertain what the best way to do this is - should I submit all of the changes to github, or is there another development repository? I would like to first port the arm/vmm from https://github.com/SEL4PROJ/camkes-arm-vm to the zynq7000<https://github.com/SEL4PROJ/camkes-arm-vm%20to%20the%20zynq7000> for testing, before porting it to the 64 bit zynq9000 platform. Could someone please put me in touch with the author of the arm/vmm that is designed to run on the tegra/tk1 hardware? I have some specific questions to ask regarding platform-specific files. At a high level, I know that I need to change the addresses of peripherals that are passed to my linux kernel (buildroot) for the zynq7000, but I am uncertain where to start. If someone could point me in the right direction, that would be very helpful. Further, if I could talk to a real person about this over the phone, that would be even better. My work phone is (1)(301)294-5263 and my cell phone is (1)(571)271-7278 - feel free to call me and leave me a message. I have not posted to devel(a)sel4.systems<mailto:devel@sel4.systems> previously, though I have been working on the sel4 project for a few months now. I work for Intelligent Automation Inc. in Rockville, Maryland - USA. ________________________________ This message and all attachments are PRIVATE, and contain information that is PROPRIETARY to Intelligent Automation, Inc. You are not authorized to transmit or otherwise disclose this message or any attachments to any third party whatsoever without the express written consent of Intelligent Automation, Inc. If you received this message in error or you are not willing to view this message or any attachments on a confidential basis, please immediately delete this email and any attachments and notify Intelligent Automation, Inc.

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Announcing 7.0.0 release
by Kent.Mcleod＠data61.csiro.au 05 Sep '17

05 Sep '17

= seL4 Version 7.0.0 Release = Announcing the release of seL4 7.0.0 with the following changes: == Changes == * Support for building standalone ia32 kernel added in e7327fa6df3 * ia32: Set sensible defaults for FS and GS selectors in c2f6d48bcf2 * aarch64: Use tpidrro_el0 for IPC buffer instead of tpidr_el0 in ae9fe9b5d18 * More seL4 manual documentation added for aarch64 object invocations * Default NUM_DOMAINS set to 16 for x86-64 standalone builds in baa9798f793 * libsel4: Return seL4_Error in invocation stubs in 8fb06eecff9 ''' This is a source code level breaking change ''' * Add a CMake based build system in 0b73072016e * x86: Increase TCB size for debug builds in 4c8be8f4f91 * libsel4: x86: Remove nested struct declarations in a8d6315eb16 ''' This is a source code level breaking change ''' * Bugfix: x86: Unmap pages when delete non final frame caps in 08b9265563a = Notable changes = * CMake based build system added: Initial experimental support has been added for using CMake for building the kernel and some user level libraries. Currently the only project that takes advantage of this is seL4test when using the cmake.xml manifest in sel4test-manifest. Documentation can be found at: https://github.com/seL4/seL4_tools/tree/master/cmake-tool = Upgrade notes = * This release is not source compatible with previous releases. * seL4 invocations that previously returned long now return seL4_Error which is an enum. Our libraries have already been updated to reflect this change, but in other places where seL4 invocations are used directly, the return types will need to be updated to reflect this change. * On x86 some structs in the Bootinfo have been rearranged. This only affects seL4_VBEModeInfoBlock_t which is used if VESA BIOS Extensions (VBE) information is being used. = Known issues = * One of our tests is non-deterministicly becoming unresponsive on the SMP release build on the Sabre IMX.6 platform, which is a non verified configuration of the kernel. We are working on fixing this problem, and will likely do a point release once it is fixed. = Full changelog = Use `git log 6.0.0..7.0.0` in https://github.com/seL4/seL4 = More details = See the 7.0.0 manual <http://sel4.systems/Info/Docs/seL4-manual-7.0.0.pdf> included in the release or ask on the mailing list!

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UX/RT - an seL4-based OS in the style of QNX and Plan 9
by Andrew Warkentin 03 Sep '17

03 Sep '17

I mentioned this here earlier, but I haven't really gone into a lot of detail about it here. I am planning to write an seL4-based OS similar to QNX and Plan 9 called UX/RT. I am intending it to be both an embedded OS (mostly for the larger types of embedded systems where QNX or Linux would be used, as opposed to simpler ones) as well as a desktop OS. I plan to use as much third-party code as possible to avoid making lots of extra work (likely LKL <https://github.com/lkl/linux> and/or the NetBSD rump kernel for device drivers, disk filesystems, and the network stack; a libc based on musl; and basic commands forked from those of FreeBSD). UX/RT will be a pure Unix-like system with no concept of "personality-neutral" services, and the root server will implement a subset of the Unix API directly (as in QNX, although the root server will be completely separate from the kernel of course, unlike that of QNX). However, there will be a Linux compatibility layer implemented with libraries and filesystem servers. I am going to avoid C for new code as much as possible for security, preferring Rust for anything performance-critical. The main concept behind the design will be to take "everything is a file" as far as it possibly can go. Nearly all resources in the system will appear in the filesystem, even things like process memory (kernel memory and the interface to the root server will be among the few non-files in the system, although the API of the root server will be implemented with an anonymous FD internally). The filesystem will be a combination of a thin layer on top of L4 IPC with read() and write() calling L4 IPC directly (short transfers will probably be sent entirely in message registers and long ones sent by using shared pages), and a memory mapping layer. The VFS will implement the name service and memory mapping parts of the filesystem; read() and write() will bypass the VFS layer entirely and will use seL4 IPC to communicate directly with the other thread. There will also be APIs that expose message registers and shared pages more directly although they will do it in a way that interoperates with read() and write() (these will mostly be used with a new "message-special" file type that preserves message boundaries but otherwise acts like a normal byte stream if used with read() or write()). No provisions will be made for use of IPC or capabilities outside the filesystem. Security will be based on an ACL-per-process model, where the root server will have an in-memory list of files for each process specifying which files it is allowed to access, as opposed to a hierarchical pure-capability model like other L4-based systems (a pure capability model seems like it would be a poor fit for a pure Unix-like system). It will be possible to either specify rwx permission bits explicitly or use the mode from the filesystem; it will also be possible for an ACL entry to specify all files under a particular directory. File descriptors will be implemented as groups of capabilities, and the root server will hand them out when a process successfully opens a file (unlike in QNX there will be no need for individual filesystem servers to check whether the client process is authorized to access a file). There will be an ACL management server that will persistently associate permissions with programs, and it will also be possible for sufficiently privileged processes to dynamically modify the ACLs of other processes. I currently have a bootloader, some basic infrastructure for building boot ISO images, and a patch for seL4 to support QNX-like XIP single-image boot using a variant of Multiboot2. I can build a boot ISO with a system image containing only the kernel, but it crashes with a triple fault somewhere in either the bootloader or the kernel (I haven't yet tried to track down where it's occurring). Once I move on to user mode code, I'm going to be using the Rust libraries from Robigalia as a basis for the root server (higher-level Rust-based components will use a normal Unix build of the Rust standard library instead). The code I have so far can be found at <https://gitlab.com/uxrt> for UX/RT itself and <https://gitlab.com/uxrt-bos> for the bootloader. I have some (long and not particularly well-organized) notes on my plans for UX/RT's architecture at <https://gitlab.com/uxrt/uxrt-toplevel/blob/master/architecture_notes>. Anybody is more than welcome to contribute if they want.

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VGA buffer as stdout
by Michal Podhradsky 31 Aug '17

31 Aug '17

Hello, I have a question about standard output. I have a camkes component than can write into text-mode VGA buffer (basically it follows this simple example http://wiki.osdev.org/Bare_Bones#Writing_a_kernel_in_C ) but I would like to be able to redirect the kernel messages during startup to be printed on screen using VGA buffer. Once another component (either Linux in a VM, or some other camkes app) will initialize, it will be able to take control over the screen output (and for example show login window etc). My questions is - is this possible with seL4? And if so, what would it entail? I guess in the minimal version, I would have to provide a different implementation of seL4_DebugPutChar, is that correct? The VGA standard seems to define the buffer to be at 0xB8000, so it should be consistent between x86 platforms. Regards Michal

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benchmark - idle utilization
by Alexander Boettcher 31 Aug '17

31 Aug '17

Hello, we use the seL4 benchmark interface to feed Genode's trace infrastructure with information about the CPU utilization of threads and of idle times. In general the integration was reasonable straightforward. One minor point we had. It seems that the idle time of a CPU can only be requested by a thread running on the vary same CPU. Requesting the CPU idle times of a remote CPU (the calling thread is on another CPU) is not supported, right ? In principle we may start on each CPU a thread just for the sake of requesting the idle utilization time, which however looks a bit of overkill. We "kind of" circumvent the issue for us by changing the syscall handling in the kernel in that regard, that the CPU number of the requested target thread is taken instead that of the caller thread, e.g. like this: --- a/src/benchmark/benchmark_utilisation.c +++ b/src/benchmark/benchmark_utilisation.c @@ -36,6 +36,11 @@ void benchmark_track_utilisation_dump(void) tcb = TCB_PTR(cap_thread_cap_get_capTCBPtr(lu_ret.cap)); buffer[BENCHMARK_TCB_UTILISATION] = tcb->benchmark.utilisation; /* Requested thread utilisation */ +#if CONFIG_MAX_NUM_NODES > 1 + if (tcb->tcbAffinity < ksNumCPUs) + buffer[BENCHMARK_IDLE_UTILISATION] = NODE_STATE_ON_CORE(ksIdleThread, tcb->tcbAffinity)->benchmark.utilisation; /* Idle thread utilisation */ + else +#endif buffer[BENCHMARK_IDLE_UTILISATION] = NODE_STATE(ksIdleThread)->benchmark.utilisation; /* Idle thread utilisation */ #ifdef CONFIG_ARM_ENABLE_PMU_OVERFLOW_INTERRUPT With this change, we still have to create a thread on every CPU (since we need a capability for the syscall), but at least the threads must not be running actively. Does this change (the patch) make sense to you and is it worthwhile to adjust in general on your side - or would you advise/envision another approach/direction ? (like specifying the cpu number for the idle times directly via the syscall or having a explicit syscall just for cpu idle times [but there are no specific thread idle capabilities as syscall parameter] etc.) Another question: Currently it seems that no idle CPU times are provided, as long as no user thread is actively running on that specific CPU. We can handle it, no problem in general - however we would have to adjust generic code (which runs on 8 different kernels) specifically for seL4 to handle this minor case. Could this possibly be changed (easily) ? Thanks, Alex. -- Alexander Boettcher Genode Labs http://www.genode-labs.com - http://www.genode.org Genode Labs GmbH - Amtsgericht Dresden - HRB 28424 - Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth

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Compile errors for Beaglebone Black
by Todd_Peterson＠mgtsciences.com 31 Aug '17

31 Aug '17

Hi, I am trying to compile seL4 for the BBB. I am getting the following errors when it gets to timer_service. I am following the instructions at https://github.com/seL4/refos-manifest. I got past another compile error by adding a typedef to device_timer.h for pstimer_t. Any help is appreciated. // tfp, added to avoid compiler error typedef uint32_t pstimer_t; [apps/timer_server] building... [HEADERS] [STAGE] autoconf.h [CC] src/state.o In file included from /home/users/staff/tpeterson/sel4/beagle/stage/arm/am335x/include/refos-util/device_io.h:22:0, from /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.h:21, from /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/state.h:27, from /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/state.c:24: /home/users/staff/tpeterson/sel4/beagle/stage/arm/am335x/include/refos-rpc/data_client_helper.h: In function 'data_open_map': /home/users/staff/tpeterson/sel4/beagle/stage/arm/am335x/include/refos-rpc/data_client_helper.h:95:69: warning: passing argument 6 o f 'data_open' from incompatible pointer type [-Wincompatible-pointer-types] d.dataspace = data_open(session, name, flags, mode, dspaceSize, &errnoRetVal); ^ In file included from /home/users/staff/tpeterson/sel4/beagle/stage/arm/am335x/include/refos-util/device_io.h:21:0, from /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.h:21, from /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/state.h:27, from /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/state.c:24: /home/users/staff/tpeterson/sel4/beagle/stage/arm/am335x/include/refos-rpc/data_client.h:72:11: note: expected 'int ** (*)()' but ar gument is of type 'int *' seL4_CPtr data_open(seL4_CPtr session, char* name, int flags, int mode, int size, int* errno); ^ [CC] src/device_timer.o /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c: In function 'device_timer_handle_irq': /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:146:5: warning: implicit declaration of function 'timer _handle_irq' [-Wimplicit-function-declaration] timer_handle_irq(s->timerDev, irq); ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c: In function 'device_timer_init': /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:239:5: error: unknown type name 'timer_config_t' timer_config_t config; ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:240:11: error: request for member 'vaddr' in something not a structure or union config.vaddr = ps_io_map(&io->opsIO.io_mapper, dm_timer_paddrs[TIMER_ID], ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:240:52: error: 'dm_timer_paddrs' undeclared (first use in this function) config.vaddr = ps_io_map(&io->opsIO.io_mapper, dm_timer_paddrs[TIMER_ID], ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:240:52: note: each undeclared identifier is reported on ly once for each function it appears in /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:242:11: error: request for member 'irq' in something no t a structure or union config.irq = dm_timer_irqs[TIMER_ID]; ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:242:18: error: 'dm_timer_irqs' undeclared (first use in this function) config.irq = dm_timer_irqs[TIMER_ID]; ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:243:16: error: request for member 'vaddr' in something not a structure or union if (!config.vaddr) { ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:248:19: warning: implicit declaration of function 'ps_g et_timer' [-Wimplicit-function-declaration] s->timerDev = ps_get_timer(TIMER_ID, &config); ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:248:17: warning: assignment makes pointer from integer without a cast [-Wint-conversion] s->timerDev = ps_get_timer(TIMER_ID, &config); ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:250:11: error: request for member 'vaddr' in something not a structure or union config.vaddr = ps_io_map(&io->opsIO.io_mapper, dm_timer_paddrs[TICK_ID], ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:252:11: error: request for member 'irq' in something no t a structure or union config.irq = dm_timer_irqs[TICK_ID]; ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:253:16: error: request for member 'vaddr' in something not a structure or union if (!config.vaddr) { ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:258:16: warning: assignment makes pointer from integer without a cast [-Wint-conversion] s->tickDev = ps_get_timer(TICK_ID, &config); ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:273:41: error: request for member 'properties' in somet hing not a structure or union for (uint32_t i = 0; i < s->timerDev->properties.irqs; i++) { ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:274:19: warning: implicit declaration of function 'time r_get_nth_irq' [-Wimplicit-function-declaration] int irq = timer_get_nth_irq(s->timerDev, i); ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:282:44: error: request for member 'properties' in somet hing not a structure or union for (uint32_t i = 0; i < s->tickDev->properties.irqs; i++) { ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:289:21: warning: implicit declaration of function 'time r_start' [-Wimplicit-function-declaration] int error = timer_start(s->tickDev); ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:310:13: warning: implicit declaration of function 'time r_periodic' [-Wimplicit-function-declaration] error = timer_periodic(s->timerDev, TIMER_PERIODIC_MAX); ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c: In function 'device_timer_get_time': /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:344:21: warning: implicit declaration of function 'time r_get_time' [-Wimplicit-function-declaration] uint64_t time = timer_get_time(s->timerDev); ^ /home/users/staff/tpeterson/sel4/beagle/apps/timer_server/src/device_timer.c:345:21: error: request for member 'properties' in somet hing not a structure or union if (!s->timerDev->properties.upcounter) { ^ make[1]: *** [/home/users/staff/tpeterson/sel4/beagle/stage/arm/am335x/common/common.mk:265: src/device_timer.o] Error 1 make: *** [tools/common/project.mk:331: timer_server] Error 2 Todd Peterson Chief Embedded Systems Engineer Management Sciences, Inc. 6022 Constitution Ave NE Albuquerque, NM 87144 505-255-8611 (office) 505-205-7057 (cell) This email message and any attachments are for the sole use of the intended recipient(s) and may contain proprietary and/or confidential information which may be privileged or otherwise protected from disclosure. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient(s), please contact the sender by reply email and destroy the original message and any copies of the message as well as any attachments to the original message.

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Genode OS Framework 17.08 with extended seL4 support
by Alexander Boettcher 30 Aug '17

30 Aug '17

Hello, we're happy to announce the version 17.08 of the Genode OS Framework. Within the last release cycle (3-months) we upgraded our Genode/seL4 support from kernel version 3.2.0 to 6.0.0, enabled x86_64 and ARM support, added UEFI support to the seL4 kernel and enabled SMP for x86. A summary of changes and features are: - Hardware-accelerated graphics for Intel Gen-8 GPUs - The seL4 6.0 kernel on ARM and 64-bit x86 hardware - Genode as Xen DomU - Preliminary UEFI support for NOVA, base-hw, and seL4 - New server for capturing reports to files - New runtime for the sequential execution of components - Support for boot-time initialized frame buffer - FatFS-based VFS plugin - Extended non-blocking operation of the VFS - Refined time handling - Updated Muen separation kernel The long version of the official release documentation: https://genode.org/documentation/release-notes/17.08 All the best, -- Alexander Boettcher Genode Labs http://www.genode-labs.com - http://www.genode.org Genode Labs GmbH - Amtsgericht Dresden - HRB 28424 - Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth

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x86_64 kernel crash
by Alexander Boettcher 30 Aug '17

30 Aug '17

Hello, we're are in progress of extending our Genode/seL4 support, namely adding x86_64 and ARM support. During this work I encountered on x86_64 some sporadically crashes of the seL4 kernel. It happened during the debugging of our roottask on seL4 in form of a page fault in the kernel ("KERNEL EXCEPTION") or a static assertion in the kernel (see below). >From my understanding, this shouldn't be possible based on your verification work. Nevertheless, it happens reliable. (To be fair, the roottask was in this scenario already a bit confused and did things wrong - which however should never be enough to force the kernel in an exception or assertion - I presume.) I saved and stripped down the scenario which causes the kernel exception with high reliably and hope you can re-produce it and find the root cause. I stripped down the scenario to just the Genode image binary and the steps we did to create the seL4 kernel from the vanilla sources. Steps to reproduce: qemu-system-x86_64 -no-kvm -serial stdio -m 512 -kernel sel4 -initrd bomb_image.elf The binaries of "bomb_image.elf" can be found at [1] and the kernel "sel4" at [2]. The kernel is based on seL4 6.0 and a patch to pc99/autoconf.h (see [0]). Beside that it is the vanilla 6.0 kernel: https://github.com/seL4/seL4.git git commit 8564ace4dfb622ec69e0f7d762ebfbc8552ec918 "update VERSION file to 6.0.0" patch -p1 <~autoconfig.patch BOARD=x86_64 ARCH=x86 SEL4_ARCH=x86_64 PLAT=pc99 DEBUG=1 make objcopy -O elf32-i386 kernel.elf.strip sel4 (Qemu complains otherwise about 64bit elf for boot) The final "sel4" binary can be used with the "bomb_image.elf" and qemu as pointed out above. I tried Qemu 2.5.0 as shipped with Ubuntu 16.04 LTS and Qemu 2.8.0 (self-compiled). On real hardware the scenario typically leads after a while (kernel booted, roottask booted, scenario starts to run) to a reboot (without the messages or assertion as in the Qemu case, see below). The tool-chain for Genode is based on GNU GCC 6.3.0 (see [3] and [4]). The kernel was either compiled with Genode's toolchain (6.3.0) or with the standard GCC as provided by Ubuntu 16.04 LTS (GCC 5.4.0). On x86_32 I could not reproduce the issue. (On ARM I did not try.) I hope the information are helpful - if you need more just ask. Cheers, Alex. ========== KERNEL EXCEPTION ========== Vector: 0xe ErrCode: 0x0 IP: 0xffffffff80720e60 SP: 0xffffffff80740e08 FLAGS: 0x6 CR0: 0x8000003b CR2: 0x3007065 (page-fault address) CR3: 0x1ffb000 (page-directory physical address) CR4: 0x220 Stack Dump: *0xffffffff80740e08 == 0xffffff8001a99b00 *0xffffffff80740e10 == 0xffffffff80729b1f *0xffffffff80740e18 == 0x1 *0xffffffff80740e20 == 0xffffffff80721c59 *0xffffffff80740e28 == 0xffffffff *0xffffffff80740e30 == 0x0 *0xffffffff80740e38 == 0xffffff801f02b740 *0xffffffff80740e40 == 0xffffff801f02b740 *0xffffffff80740e48 == 0x1 *0xffffffff80740e50 == 0xffffff8001a99000 *0xffffffff80740e58 == 0x7 *0xffffffff80740e60 == 0x59 *0xffffffff80740e68 == 0xffffff8001a99b00 *0xffffffff80740e70 == 0xffffffff80729cf3 *0xffffffff80740e78 == 0x9000000000000007 *0xffffffff80740e80 == 0xffffff8001a99059 *0xffffffff80740e88 == 0xffffff80ffffffff *0xffffffff80740e90 == 0xffffffff80740f18 *0xffffffff80740e98 == 0xffffff800013c200 *0xffffffff80740ea0 == 0x10000 Halting... halting... Kernel entry via Syscall, number: 1, Call Cap type: 10, Invocation tag: 16 or seL4 failed assertion '(cte_t*)mdb_node_get_mdbNext(destSlot->cteMDBNode) == NULL && (cte_t*)mdb_node_get_mdbPrev(destSlot->cteMDBNode) == NULL' at src/object/cnode.c:457 in function cteInsert halting... Kernel entry via Syscall, number: 1, Call Cap type: 10, Invocation tag: 18 or a fault by the roottask (and not in the kernel). So - this is no issue for the kernel: Caught cap fault in send phase at address 0x0 while trying to handle: vm fault on data at address 0x18 with status 0x4 in thread 0xffffff800013c200 "child of: 'rootserver'" at address 0x20419cf [0] https://github.com/alex-ab/genode/blob/crash_sel4_kernel_vanilla/autoconfig… [1] https://github.com/alex-ab/genode/raw/crash_sel4_kernel_vanilla/image_bomb.… [2] https://github.com/alex-ab/genode/raw/crash_sel4_kernel_vanilla/sel4 [3] https://genode.org/download/tool-chain [4] https://sourceforge.net/projects/genode/files/genode-toolchain/17.05/ -- Alexander Boettcher Genode Labs http://www.genode-labs.com - http://www.genode.org Genode Labs GmbH - Amtsgericht Dresden - HRB 28424 - Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth

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Arm VMM Vchan
by Enrique Leon 26 Aug '17

26 Aug '17

Hello to All, I am trying to do some message passing between a vm component and a camkes component. I have tried by enabling the Vchan option on the build system and compiling the helloworld linux user level program on a tk1. I received an error about the /dev/vmm_manager not being able to open. What is the proper method of setting up the Vchan communication for camkes-arm-vmm on a tk1? Thank You

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Re: [seL4] Devel Digest, Vol 39, Issue 26
by talos 25 Aug '17

25 Aug '17

Dear, I used "qemu-system-i386 -m 1024 -kernel images/kernel-ia32-pc99 -initrd images/capdl-loader-experimental-image-ia32-pc99" It showed "Booting from ROM" Thanks, Sincerely ------------------ Original ------------------ From: "devel-request";<devel-request(a)sel4.systems>; Date: Thu, Aug 24, 2017 10:00 AM To: "devel"<devel(a)sel4.systems>; Subject: Devel Digest, Vol 39, Issue 26 Send Devel mailing list submissions to devel(a)sel4.systems To subscribe or unsubscribe via the World Wide Web, visit https://sel4.systems/lists/listinfo/devel or, via email, send a message with subject or body 'help' to devel-request(a)sel4.systems You can reach the person managing the list at devel-owner(a)sel4.systems When replying, please edit your Subject line so it is more specific than "Re: Contents of Devel digest..." Today's Topics: 1. Re: about camkesvm (Kofidoku.Atuah(a)data61.csiro.au) ---------------------------------------------------------------------- Message: 1 Date: Thu, 24 Aug 2017 00:00:19 +0000 From: <Kofidoku.Atuah(a)data61.csiro.au> To: <devel(a)sel4.systems> Subject: Re: [seL4] about camkesvm Message-ID: <1503532819201.94096(a)data61.csiro.au> Content-Type: text/plain; charset="iso-8859-1" Hey Talos, Sorry we didn't make this clearer on that page: those defconfigs build an x86-pc image; not an ARM image. Could you try running Qemu again, but with something similar to, qemu-system-i386 -m <WHATEVER_RAM_SIZE_YOU_WANT> -kernel <SEL4_KERNEL_IMAGE> -initrd <CAPDL_INITRD_IMAGE> And tell me what happens? Sorry for the inconvenience. -- Kofi Doku Atuah Kernel engineer DATA61 | CSIRO ________________________________ From: Devel <devel-bounces(a)sel4.systems> on behalf of talos <2486580938(a)qq.com> Sent: 22 August 2017 15:39 To: devel Subject: [seL4] about camkesvm Hi I started the tutorial following the link: https://wiki.sel4.systems/CAmkESVM I used "make minimal_defconfig" substituting "make cma34cr_minimal_defconfig" for int the directory config there is minimal_defconfig then make and qemu-system-arm -M kzm -nographic -kernel images/capdl-loader-experimental-image-ia32-pc99 but the error is Segmentation fault (core dumped) what's wrong? Thanks Sincerely -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://sel4.systems/pipermail/devel/attachments/20170824/cd4992b3/attachmen…> ------------------------------ Subject: Digest Footer _______________________________________________ Devel mailing list Devel(a)sel4.systems https://sel4.systems/lists/listinfo/devel ------------------------------ End of Devel Digest, Vol 39, Issue 26 *************************************

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