- Devel - lists.sel4.systems

Porting Qubes OS to seL4 project
by Paul Vlase 28 Mar '16

28 Mar '16

No answer ... Am I doing something wrong? Beside not have patience. Could anyone tell about the status of the seL4 Qubes port project and who can I get in touch with to talk more about it? On Tue, Mar 22, 2016 at 11:35 PM, Paul Vlase <vlase.paul(a)gmail.com> wrote: > Hello, > > My name is Paul Vlase and I am following a master degree right now. I > am interested in porting the Qubes OS to seL4 project and I saw that > you are working already on it. Is there anything I can help you on > this project? > > Thank you, > Paul Vlase

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sel4 in TrustZone
by Norrathep Rattanavipanon 27 Mar '16

27 Mar '16

Hi again :) Is it possible to run sel4 as a secure world OS in TrustZone? Has anyone successfully done that before? Thank you, -- Norrathep (Oak) Rattanavipanon M.S. in Computer Science University of California - Irvine

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(simple?) build error?
by 谢文龙 27 Mar '16

27 Mar '16

I'm getting an error when building from Ubuntu. I'm building from: repo init -u https://github.com/seL4/sel4test-manifest.git I've configured with: make ia32_simulation_release_xml_defconfig and done "make menuconfig" accepting the defaults. Finally I run make and get errors: [KERNEL] [PBF_GEN] arch/object/structures.pbf [PBF_GEN] arch/api/shared_types.pbf [PBF_GEN] plat/machine/hardware.pbf [PBF_GEN] api/types.pbf [BF_GEN] arch/object/structures_gen.h [BF_GEN] arch/api/shared_types_gen.h [BF_GEN] plat/machine/hardware_gen.h [BF_GEN] api/types_gen.h [CPP] src/arch/x86/32/machine_asm.s [AS] src/arch/x86/32/machine_asm.o [CPP] src/arch/x86/32/traps.s [AS] src/arch/x86/32/traps.o [CPP] src/arch/x86/32/head.s [AS] src/arch/x86/32/head.o [CPP] src/arch/x86/halt.s [AS] src/arch/x86/halt.o [CPP] src/arch/x86/idle.s [AS] src/arch/x86/idle.o [TOUCH] sources_list_updated [CPP_GEN] kernel_all.c [CPP] kernel_all.c_pp [CP] kernel_final.c [CC] kernel_final.s [AS] kernel.o [LD] kernel.elf /usr/bin/ld:linker.lds_pp:5: syntax error collect2: error: ld returned 1 exit status make[1]: *** [kernel.elf] Error 1 make: *** [kernel_elf] Error 2 make V=3 mkdir -p /home/talos/seL4test/stage/x86/pc99 mkdir -p /home/talos/seL4test/build/x86/pc99 mkdir -p /home/talos/seL4test/images mkdir -p /home/talos/seL4test/stage/x86/pc99/common cp -R /home/talos/seL4test/tools/common/* /home/talos/seL4test/stage/x86/pc99/common [libs/libsel4] building... mkdir -p /home/talos/seL4test/build/x86/pc99/libsel4 CFLAGS= LDFLAGS= make -C /home/talos/seL4test/build/x86/pc99/libsel4 -f /home/talos/seL4test/.config -f /home/talos/seL4test/libs/libsel4/Makefile \ BUILD_DIR=/home/talos/seL4test/build/x86/pc99/libsel4 SOURCE_DIR=/home/talos/seL4test/libs/libsel4 V=3 \ STAGE_DIR=/home/talos/seL4test/stage/x86/pc99 \ TOOLPREFIX= make[1]: Entering directory `/home/talos/seL4test/build/x86/pc99/libsel4' [GEN] include/sel4/types_gen.h [GEN] arch_include/x86/sel4/arch/invocation.h [GEN] include/sel4/shared_types_gen.h [GEN] sel4_arch_include/ia32/sel4/sel4_arch/invocation.h [HEADERS] [STAGE] api/* [STAGE] interfaces/* [STAGE] sel4/* [STAGE] interfaces/* [STAGE] sel4/* [STAGE] interfaces/* [STAGE] sel4/* [STAGE] sel4/* [STAGE] interfaces/* [STAGE] autoconf.h make[1]: Leaving directory `/home/talos/seL4test/build/x86/pc99/libsel4' [libs/libsel4] done. [libs/libmuslc] building... mkdir -p /home/talos/seL4test/build/x86/pc99/libmuslc CFLAGS= LDFLAGS= make -C /home/talos/seL4test/build/x86/pc99/libmuslc -f /home/talos/seL4test/.config -f /home/talos/seL4test/libs/libmuslc/Makefile \ BUILD_DIR=/home/talos/seL4test/build/x86/pc99/libmuslc SOURCE_DIR=/home/talos/seL4test/libs/libmuslc V=3 \ STAGE_DIR=/home/talos/seL4test/stage/x86/pc99 \ TOOLPREFIX= make[1]: Entering directory `/home/talos/seL4test/build/x86/pc99/libmuslc' make[1]: Nothing to be done for `default'. make[1]: Leaving directory `/home/talos/seL4test/build/x86/pc99/libmuslc' [libs/libmuslc] done. [libs/libcpio] building... mkdir -p /home/talos/seL4test/build/x86/pc99/libcpio CFLAGS= LDFLAGS= make -C /home/talos/seL4test/build/x86/pc99/libcpio -f /home/talos/seL4test/.config -f /home/talos/seL4test/libs/libcpio/Makefile \ BUILD_DIR=/home/talos/seL4test/build/x86/pc99/libcpio SOURCE_DIR=/home/talos/seL4test/libs/libcpio V=3 \ STAGE_DIR=/home/talos/seL4test/stage/x86/pc99 \ TOOLPREFIX= make[1]: Entering directory `/home/talos/seL4test/build/x86/pc99/libcpio' [HEADERS] [STAGE] cpio/* [STAGE] autoconf.h make[1]: Leaving directory `/home/talos/seL4test/build/x86/pc99/libcpio' [libs/libcpio] done. [libs/libutils] building... mkdir -p /home/talos/seL4test/build/x86/pc99/libutils CFLAGS= LDFLAGS= make -C /home/talos/seL4test/build/x86/pc99/libutils -f /home/talos/seL4test/.config -f /home/talos/seL4test/libs/libutils/Makefile \ BUILD_DIR=/home/talos/seL4test/build/x86/pc99/libutils SOURCE_DIR=/home/talos/seL4test/libs/libutils V=3 \ STAGE_DIR=/home/talos/seL4test/stage/x86/pc99 \ TOOLPREFIX= make[1]: Entering directory `/home/talos/seL4test/build/x86/pc99/libutils' [HEADERS] [STAGE] utils/* [STAGE] autoconf.h make[1]: Leaving directory `/home/talos/seL4test/build/x86/pc99/libutils' [libs/libutils] done. [libs/libsel4vka] building... mkdir -p /home/talos/seL4test/build/x86/pc99/libsel4vka CFLAGS= LDFLAGS= make -C /home/talos/seL4test/build/x86/pc99/libsel4vka -f /home/talos/seL4test/.config -f /home/talos/seL4test/libs/libsel4vka/Makefile \ BUILD_DIR=/home/talos/seL4test/build/x86/pc99/libsel4vka SOURCE_DIR=/home/talos/seL4test/libs/libsel4vka V=3 \ STAGE_DIR=/home/talos/seL4test/stage/x86/pc99 \ TOOLPREFIX= make[1]: Entering directory `/home/talos/seL4test/build/x86/pc99/libsel4vka' [HEADERS] [STAGE] vka/* [STAGE] vka/* [STAGE] autoconf.h make[1]: Leaving directory `/home/talos/seL4test/build/x86/pc99/libsel4vka' [libs/libsel4vka] done. [libs/libsel4vspace] building... mkdir -p /home/talos/seL4test/build/x86/pc99/libsel4vspace CFLAGS= LDFLAGS= make -C /home/talos/seL4test/build/x86/pc99/libsel4vspace -f /home/talos/seL4test/.config -f /home/talos/seL4test/libs/libsel4vspace/Makefile \ BUILD_DIR=/home/talos/seL4test/build/x86/pc99/libsel4vspace SOURCE_DIR=/home/talos/seL4test/libs/libsel4vspace V=3 \ STAGE_DIR=/home/talos/seL4test/stage/x86/pc99 \ TOOLPREFIX= make[1]: Entering directory `/home/talos/seL4test/build/x86/pc99/libsel4vspace' [HEADERS] [STAGE] vspace/* [STAGE] vspace/* [STAGE] autoconf.h make[1]: Leaving directory `/home/talos/seL4test/build/x86/pc99/libsel4vspace' [libs/libsel4vspace] done. [libs/libplatsupport] building... mkdir -p /home/talos/seL4test/build/x86/pc99/libplatsupport CFLAGS= LDFLAGS= make -C /home/talos/seL4test/build/x86/pc99/libplatsupport -f /home/talos/seL4test/.config -f /home/talos/seL4test/libs/libplatsupport/Makefile \ BUILD_DIR=/home/talos/seL4test/build/x86/pc99/libplatsupport SOURCE_DIR=/home/talos/seL4test/libs/libplatsupport V=3 \ STAGE_DIR=/home/talos/seL4test/stage/x86/pc99 \ TOOLPREFIX= make[1]: Entering directory `/home/talos/seL4test/build/x86/pc99/libplatsupport' [HEADERS] [STAGE] platsupport/* [STAGE] platsupport/* [STAGE] platsupport/* [STAGE] autoconf.h make[1]: Leaving directory `/home/talos/seL4test/build/x86/pc99/libplatsupport' [libs/libplatsupport] done. [libs/libsel4simple] building... mkdir -p /home/talos/seL4test/build/x86/pc99/libsel4simple CFLAGS= LDFLAGS= make -C /home/talos/seL4test/build/x86/pc99/libsel4simple -f /home/talos/seL4test/.config -f /home/talos/seL4test/libs/libsel4simple/Makefile \ BUILD_DIR=/home/talos/seL4test/build/x86/pc99/libsel4simple SOURCE_DIR=/home/talos/seL4test/libs/libsel4simple V=3 \ STAGE_DIR=/home/talos/seL4test/stage/x86/pc99 \ TOOLPREFIX= make[1]: Entering directory `/home/talos/seL4test/build/x86/pc99/libsel4simple' [HEADERS] [STAGE] simple/* [STAGE] autoconf.h make[1]: Leaving directory `/home/talos/seL4test/build/x86/pc99/libsel4simple' [libs/libsel4simple] done. [libs/libsel4simple-default] building... mkdir -p /home/talos/seL4test/build/x86/pc99/libsel4simple-default CFLAGS= LDFLAGS= make -C /home/talos/seL4test/build/x86/pc99/libsel4simple-default -f /home/talos/seL4test/.config -f /home/talos/seL4test/libs/libsel4simple-default/Makefile \ BUILD_DIR=/home/talos/seL4test/build/x86/pc99/libsel4simple-default SOURCE_DIR=/home/talos/seL4test/libs/libsel4simple-default V=3 \ STAGE_DIR=/home/talos/seL4test/stage/x86/pc99 \ TOOLPREFIX= make[1]: Entering directory `/home/talos/seL4test/build/x86/pc99/libsel4simple-default' [HEADERS] [STAGE] simple-default/* [STAGE] autoconf.h make[1]: Leaving directory `/home/talos/seL4test/build/x86/pc99/libsel4simple-default' [libs/libsel4simple-default] done. [libs/libsel4platsupport] building... mkdir -p /home/talos/seL4test/build/x86/pc99/libsel4platsupport CFLAGS= LDFLAGS= make -C /home/talos/seL4test/build/x86/pc99/libsel4platsupport -f /home/talos/seL4test/.config -f /home/talos/seL4test/libs/libsel4platsupport/Makefile \ BUILD_DIR=/home/talos/seL4test/build/x86/pc99/libsel4platsupport SOURCE_DIR=/home/talos/seL4test/libs/libsel4platsupport V=3 \ STAGE_DIR=/home/talos/seL4test/stage/x86/pc99 \ TOOLPREFIX= make[1]: Entering directory `/home/talos/seL4test/build/x86/pc99/libsel4platsupport' [HEADERS] [STAGE] sel4platsupport/* [STAGE] sel4platsupport/* [STAGE] sel4platsupport/* [STAGE] autoconf.h make[1]: Leaving directory `/home/talos/seL4test/build/x86/pc99/libsel4platsupport' [libs/libsel4platsupport] done. [libs/libelf] building... mkdir -p /home/talos/seL4test/build/x86/pc99/libelf CFLAGS= LDFLAGS= make -C /home/talos/seL4test/build/x86/pc99/libelf -f /home/talos/seL4test/.config -f /home/talos/seL4test/libs/libelf/Makefile \ BUILD_DIR=/home/talos/seL4test/build/x86/pc99/libelf SOURCE_DIR=/home/talos/seL4test/libs/libelf V=3 \ STAGE_DIR=/home/talos/seL4test/stage/x86/pc99 \ TOOLPREFIX= make[1]: Entering directory `/home/talos/seL4test/build/x86/pc99/libelf' [HEADERS] [STAGE] elf/* [STAGE] autoconf.h make[1]: Leaving directory `/home/talos/seL4test/build/x86/pc99/libelf' [libs/libelf] done. [libs/libsel4utils] building... mkdir -p /home/talos/seL4test/build/x86/pc99/libsel4utils CFLAGS= LDFLAGS= make -C /home/talos/seL4test/build/x86/pc99/libsel4utils -f /home/talos/seL4test/.config -f /home/talos/seL4test/libs/libsel4utils/Makefile \ BUILD_DIR=/home/talos/seL4test/build/x86/pc99/libsel4utils SOURCE_DIR=/home/talos/seL4test/libs/libsel4utils V=3 \ STAGE_DIR=/home/talos/seL4test/stage/x86/pc99 \ TOOLPREFIX= make[1]: Entering directory `/home/talos/seL4test/build/x86/pc99/libsel4utils' [HEADERS] [STAGE] sel4utils/* [STAGE] sel4utils/* [STAGE] autoconf.h make[1]: Leaving directory `/home/talos/seL4test/build/x86/pc99/libsel4utils' [libs/libsel4utils] done. [libs/libsel4muslcsys] building... mkdir -p /home/talos/seL4test/build/x86/pc99/libsel4muslcsys CFLAGS= LDFLAGS= make -C /home/talos/seL4test/build/x86/pc99/libsel4muslcsys -f /home/talos/seL4test/.config -f /home/talos/seL4test/libs/libsel4muslcsys/Makefile \ BUILD_DIR=/home/talos/seL4test/build/x86/pc99/libsel4muslcsys SOURCE_DIR=/home/talos/seL4test/libs/libsel4muslcsys V=3 \ STAGE_DIR=/home/talos/seL4test/stage/x86/pc99 \ TOOLPREFIX= make[1]: Entering directory `/home/talos/seL4test/build/x86/pc99/libsel4muslcsys' [HEADERS] [STAGE] arch_stdio.h [STAGE] autoconf.h make[1]: Leaving directory `/home/talos/seL4test/build/x86/pc99/libsel4muslcsys' [libs/libsel4muslcsys] done. [libs/libsel4allocman] building... mkdir -p /home/talos/seL4test/build/x86/pc99/libsel4allocman CFLAGS= LDFLAGS= make -C /home/talos/seL4test/build/x86/pc99/libsel4allocman -f /home/talos/seL4test/.config -f /home/talos/seL4test/libs/libsel4allocman/Makefile \ BUILD_DIR=/home/talos/seL4test/build/x86/pc99/libsel4allocman SOURCE_DIR=/home/talos/seL4test/libs/libsel4allocman V=3 \ STAGE_DIR=/home/talos/seL4test/stage/x86/pc99 \ TOOLPREFIX= make[1]: Entering directory `/home/talos/seL4test/build/x86/pc99/libsel4allocman' [HEADERS] [STAGE] allocman/* [STAGE] allocman/* [STAGE] autoconf.h make[1]: Leaving directory `/home/talos/seL4test/build/x86/pc99/libsel4allocman' [libs/libsel4allocman] done. [libs/libsel4test] building... mkdir -p /home/talos/seL4test/build/x86/pc99/libsel4test CFLAGS= LDFLAGS= make -C /home/talos/seL4test/build/x86/pc99/libsel4test -f /home/talos/seL4test/.config -f /home/talos/seL4test/libs/libsel4test/Makefile \ BUILD_DIR=/home/talos/seL4test/build/x86/pc99/libsel4test SOURCE_DIR=/home/talos/seL4test/libs/libsel4test V=3 \ STAGE_DIR=/home/talos/seL4test/stage/x86/pc99 \ TOOLPREFIX= make[1]: Entering directory `/home/talos/seL4test/build/x86/pc99/libsel4test' [HEADERS] [STAGE] sel4test/* [STAGE] autoconf.h make[1]: Leaving directory `/home/talos/seL4test/build/x86/pc99/libsel4test' [libs/libsel4test] done. [apps/sel4test-tests] building... mkdir -p /home/talos/seL4test/build/x86/pc99/sel4test-tests CFLAGS= LDFLAGS= make -C /home/talos/seL4test/build/x86/pc99/sel4test-tests -f /home/talos/seL4test/.config -f /home/talos/seL4test/apps/sel4test-tests/Makefile \ BUILD_DIR=/home/talos/seL4test/build/x86/pc99/sel4test-tests SOURCE_DIR=/home/talos/seL4test/apps/sel4test-tests V=3 \ STAGE_DIR=/home/talos/seL4test/stage/x86/pc99 \ TOOLPREFIX= make[1]: Entering directory `/home/talos/seL4test/build/x86/pc99/sel4test-tests' [HEADERS] [STAGE] autoconf.h make[1]: Leaving directory `/home/talos/seL4test/build/x86/pc99/sel4test-tests' [apps/sel4test-tests] done. [KERNEL] mkdir -p /home/talos/seL4test/build/kernel make -C /home/talos/seL4test/build/kernel -f /home/talos/seL4test/kernel/Makefile \ SOURCE_ROOT=/home/talos/seL4test/kernel O=/home/talos/seL4test/build/kernel V=3 \ TOOLPREFIX= \ CONFIG_DOMAIN_SCHEDULE= \ HAVE_AUTOCONF=1 NO_PRESERVE_TIMESTAMP=1 seL4 build options: =================== ARCH = x86 PLAT = pc99 CPU = TOOLPREFIX = PATH = /home/talos/bin:/home/talos/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games DEBUG = ASSERT = CONFIG_DEFS = CYCLE_COUNTER PERF_COUNTER=CYCLE_COUNTER DANGEROUS_CODE_INJECTION = CC = gcc CC_PATH = CPP = cpp CPP_PATH = AS = as AS_PATH = LD = ld LD_PATH = PARSER = c-parser PARSER_PATH = BF_GEN = bitfield_gen.py BF_GEN_PATH = SYSCALL_ID_GEN = syscall_header_gen.py SYSCALL_ID_GEN_PATH = INVOCATION_ID_GEN = invocation_header_gen.py INVOCATION_ID_GEN_PATH = XMLLINT_PATH = XMLLINT = xmllint.sh CFLAGS = -fno-stack-protector -m32 --std=c99 -nostdlib -nostdinc -ffreestanding -Wall -Werror -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -Wmissing-declarations -Wundef -Wpointer-arith -Wno-nonnull -Wdeclaration-after-statement "-I/home/talos/seL4test/kernel/include/arch/x86/arch/32" "-I/home/talos/seL4test/kernel/include/plat/pc99/plat/32" -O2 -mno-mmx -mno-sse -mno-sse2 -mno-3dnow -DCYCLE_COUNTER -DPERF_COUNTER=CYCLE_COUNTER -DFASTPATH ASFLAGS = -Wa,--32 "-I/home/talos/seL4test/kernel/include/arch/x86/arch/32" "-I/home/talos/seL4test/kernel/include/plat/pc99/plat/32" CPPFLAGS = -DHAVE_AUTOCONF -I/home/talos/seL4test/include/generated -DARCH_X86 -DIA32 -DARCH_IA32 -D__KERNEL_32__ -DX86_32 -DPLAT_PC99 -DFASTPATH -DCYCLE_COUNTER -DPERF_COUNTER=CYCLE_COUNTER -DFASTPATH "-I/home/talos/seL4test/kernel/include/arch/x86/arch/32" "-I/home/talos/seL4test/kernel/include/plat/pc99/plat/32" LDFLAGS = -Wl,--build-id=none -Wl,-m,elf_i386 -nostdlib -nostdinc -Wl,--build-id=none -O2 make[1]: Entering directory `/home/talos/seL4test/build/kernel' [LD] kernel.elf /home/talos/seL4test/kernel/tools/changed.sh kernel.elf gcc -Wl,--build-id=none -Wl,-m,elf_i386 -nostdlib -nostdinc -Wl,--build-id=none -O2 -Wl,-T -Wl,linker.lds_pp \ -o kernel.elf src/arch/x86/32/machine_asm.o src/arch/x86/32/traps.o src/arch/x86/32/head.o src/arch/x86/halt.o src/arch/x86/idle.o kernel.o /usr/bin/ld:linker.lds_pp:5: syntax error collect2: error: ld returned 1 exit status make[1]: *** [kernel.elf] Error 1 make[1]: Leaving directory `/home/talos/seL4test/build/kernel' make: *** [kernel_elf] Error 2

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sel4 benchmark
by Norrathep Rattanavipanon 24 Mar '16

24 Mar '16

Hello, What's the best way to benchmark my program inside sel4? I saw wiki page about running sel4 bench (https://wiki.sel4.systems/Benchmarking%20guide) but it wasnt filled yet. So I wonder if there's any public guide or tutorial on that? I also found this https://github.com/seL4/libplatsupport/blob/master/arch_include/x86/platsup… and tried both rdtsc_pure and rdtsc_cpuid but neither of them seems to produce reliable results. Best, -- Norrathep (Oak) Rattanavipanon M.S. in Computer Science University of California - Irvine

2 1

sel4 job offer
by Julien Delange 24 Mar '16

24 Mar '16

For information, we are looking for people to work on sel4. See https://www.appone.com/maininforeq.asp?Ad=250944&R_ID=1243309&Refer=http://… If you have any question, do not hesitate to contact me and/or apply! Julien.

1 0

Porting Qubes OS to seL4 project
by Paul Vlase 22 Mar '16

22 Mar '16

Hello, My name is Paul Vlase and I am following a master degree right now. I am interested in porting the Qubes OS to seL4 project and I saw that you are working already on it. Is there anything I can help you on this project? Thank you, Paul Vlase

1 0

[CAmkES] CAmkES 2.1.0 Release Notes
by Stephen Sherratt 22 Mar '16

22 Mar '16

CAmkES 2.1.0 Release Notes ========================== ## New Features - runner takes an `--architecture` command line argument which selects the target architecture. Valid arguments are: aarch32, arm_hyp, ia32 - added the ability to specify a hardware dataport as cached. Previously all hardware dataports were mapped uncached. This feature is intended to be used on dataports backed by DMA-able memory to improve access times. Functions to flush dataports from the cache are also provided. - support for seL4 3.0.0 ## Removed Features - `--hyp` command line argument is replaced with `--architecture arm_hyp` ## API Removals ### Unmarshalling Helpers These were intended for use in templates, but are no longer used in any internal templates: - `camkes_marshal` - `camkes_marshal_string` - `camkes_unmarshal` - `camkes_unmarshal_string` ### DMA Utilities These had been deprecated for a long period and are now being removed: - `camkes_dma_page_alloc` - `camkes_dma_page_free` You can find it at: https://github.com/seL4/camkes-tool/tree/camkes-2.1.0 A manifest for the 2.1.0 compatible versions of test and example apps: https://github.com/seL4/camkes-manifest/blob/master/default-2.1.x.xml Release notes on the wiki: https://wiki.sel4.systems/CAmkES%202.1.0 Enjoy! ________________________________ The information in this e-mail may be confidential and subject to legal professional privilege and/or copyright. National ICT Australia Limited accepts no liability for any damage caused by this email or its attachments.

1 0

What happens to the IPC buffer when you make another process within the same Vspace?
by Qiwei Wen 20 Mar '16

20 Mar '16

Hi, I'm trying to write a multithreaded seL4 application. It's to be made up of sel4util processes with different cspaces and sharing the same Vspace. I managed to achieve this, but what confuses me is that since the processes share the same Vspace, wouldn't GetIPCBuffer() return the same result for each of them? I looked at libsel4/arch_include/arm/sel4/arch/functions.h, and GetIPCBuffer() is simply: return *(seL4_IPCBuffer**)seL4_GlobalsFrame; Since seL4_GlobalsFrame is just a fixed memory location (0xffffc000) in the shared address space, why does seL4_GetIPCBuffer() return different results for different processes? Below is the output: ========================== PARENT: IPCBUFFER: 00273000 CHILD: GlobalsFrame: ffffc000, *GlobalsFrame 10076000 CHILD: setting shared to 97 PARENT: CHILD DIED, shared char: 97, MR16: 00000000 ============================= Is it that the frame ffffc000 mapping is changed on every context switch perhaps? Can I absolutely trust that IPC is still working correctly with this set up? Thanks, David

5 4

Isabelle itself proven?
by Steve VanderLeest 20 Mar '16

20 Mar '16

Since the formal verification of functional correctness of seL4 was performed using the Isabelle theorem prover, could someone tell me if Isabelle itself has been formally verified? If so, could you suggest some good references to that work? Regards, Steve Steven H. VanderLeest, Ph.D. Chief Operating Officer DornerWorks, Ltd. 3445 Lake Eastbrook Grand Rapids, MI 49546 www.dornerworks.com

3 2

Booting process
by Daniel Wang 19 Mar '16

19 Mar '16

Hi all, I’m very new to seL4 development. I’m particularly interested in understanding seL4 kernel source code. Could someone points me out how the seL4 is booted and where should I start learning? Thanks -Dan

3 2