l4-hackers April 2009

l4-hackers@os.inf.tu-dresden.de

19 participants
40 discussions

Back to UTCB IPC
by Marc CHALAND 11 Oct '09

11 Oct '09

Hi, I am back with my problem with UTCB IPC. To sum up the context : I use pure l4env applications. Here is the scenario between my server and my client : 1. client makes an UTCB IPC to manager. Manager does an l4rm_area_reserve, creates a rcv_fpage, creates worker and sends back worker thread id to client. 2. client allocates memory and associated flexpage and sends it to server. 3. UTCB IPC is sent to worker with 3 parameters : - on client side : utcb->values=0xbff00200: arg1=0x2 arg2=0x1 arg3=0x6 - on server side : utcb->values=0xbff00200: arg1=0x241401 arg2=0x0 arg3=0x7069776c It seems that 0xbff00200 is not mapped on the same memory on client and server side. As there is no problem for first IPC (utcb->values is also 0xbff00200), is there any potential problem with flexpage ? As utcb->values is still the same, what happens if several threads try to make UTCB IPC ? Another question : when I link my application with liblogserver.a, I have strange logs : .rm.sem.mainMain function returned. It seems that .rm .sem and .main are added by l4env, but I didn't find where. Regards Marc

4 9

time problem
by fang zhengshu 19 May '09

19 May '09

hi all, I write a simple test example about time function.but when I use the "time()" function,the code can not be compiled correctly. I just have include the <time.h>,any question? the error I put following: l4@192:~/tudos/l4/pkg/test_fifo/examples/client$ make PWD=/home/l4/tudos/build/pkg/test_fifo/examples/client/OBJ-x86_586-l4v2 make -C /home/l4/tudos/build/pkg/test_fifo/examples/client/OBJ-x86_586-l4v2 -f Makefile make[1]: Entering directory `/home/l4/tudos/build/pkg/test_fifo/examples/client/OBJ-x86_586-l4v2' ... Compiling main.o LD_PRELOAD=/home/l4/tudos/build/tool/gendep/libgendep.so GENDEP_TARGET=main.o GENDEP_BINARY=cc1 gcc -m32 -c -DUSE_UCLIBC=y -DRAM_BASE=0x0 -DSYSTEM_x86_586_l4v2 -DARCH_x86 -DCPUTYPE_586 -DL4API_l4v2 -DCONFIG_L4_CALL_SYSCALLS -DCONFIG_L4_ABS_SYSCALLS -I/home/l4/tudos/build/pkg/test_fifo/idl/OBJ-x86-l4v2 -I/home/l4/tudos/build/include/x86/l4v2 -I/home/l4/tudos/build/include/l4v2 -I/home/l4/tudos/build/include/x86 -I/home/l4/tudos/build/include -I/home/l4/tudos/l4/../dice/include -I/home/drops/include/x86/l4v2 -I/home/drops/include/l4v2 -I/home/drops/include/x86 -I/home/drops/include -nostdinc -I/home/l4/tudos/build/include/x86/uclibc -I/home/l4/tudos/build/include/uclibc -I/home/l4/tudos/build/include/uclibc++ -I/home/drops/include/x86/uclibc -I/home/drops/include/uclibc -I/home/drops/include/uclibc++ -I/usr/lib/gcc/i486-linux-gnu/4.2.4/include -I/usr/lib/gcc/i486-linux-gnu/4.2.4/include-fixed -gstabs+ -g -O2 -fno-strict-aliasing -march=i586 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -fno-common -fno-stack-protector /home/l4/tudos/l4/pkg/test_fifo/examples/client/main.c -o main.o ==> Linking test_fifo-client LD_PRELOAD=/home/l4/tudos/build/tool/gendep/libgendep.so GENDEP_TARGET=test_fifo-client GENDEP_BINARY=ld GENDEP_BINARY_ALT1=ld ld -m elf_i386 -o test_fifo-client /home/l4/tudos/build/lib/x86_586/crt0.o main.o test-client.o -Ttext=0x1100000 --hash-style=sysv -L/home/l4/tudos/build/lib/x86_586/l4v2 -L/home/l4/tudos/build/lib/x86_586 -L/home/l4/tudos/build/lib -L/home/drops/lib/x86_586/l4v2 -L/home/drops/lib/x86_586 -L/home/drops/lib -T/home/l4/tudos/build/lib/x86_586/main_stat.ld -static -lgeneric_ts -ll4env -ll4rm -ldm_generic -ldm_mem -lthread -lsemaphore -llogserver_capsule -lnames -ll4util_root -ll4util -lsigma0 -lroot -ll4env -ll4env_err -ll4rm -ldm_generic -ldm_mem -lthread -lslab -ll4sys -nostdlib -luc_c -luclibc_support -u mmap_anon -lc_be_simple_mem -lc_be_mmap -lc_be_mmap_util -lc_be_l4env_start_stop -lc_be_minimal_log_io -luc_be_simple_sleep -ll4env -llogserver_capsule -ll4rm -ldm_generic -ldm_mem -lthread -lgeneric_ts -luc_c /usr/lib/gcc/i486-linux-gnu/4.2.4/libgcc.a -luc_c -ll4sys -Ttext=0x1100000 --warn-common -gc-sections main.o: In function `main': /home/l4/tudos/l4/pkg/test_fifo/examples/client/main.c:36: undefined reference to `time' /home/l4/tudos/l4/pkg/test_fifo/examples/client/main.c:40: undefined reference to `time' /home/l4/tudos/l4/pkg/test_fifo/examples/client/main.c:36: undefined reference to `time' make[1]: *** [test_fifo-client] Error 1 make[1]: Leaving directory `/home/l4/tudos/build/pkg/test_fifo/examples/client/OBJ-x86_586-l4v2' make: *** [/home/l4/tudos/build/pkg/test_fifo/examples/client/OBJ-x86_586-l4v2] Error 2 I have search the same error in l4-hackers ,someone suggest use rtc server,I think it's a good idea.but I have found that the time() function in time.h,why the error will happen? The reason I just include time.h? Thank you! -- fang,

3 5

Warning from ORe stub driver
by Alexander Valitov 03 May '09

03 May '09

Hi, When I use L4Linux ORe stub driver it constantly prints these warnings: l4lx | eth0: buffer too small (1) l4lx | eth0: buffer too small (1) l4lx | eth0: buffer too small (1) What does it mean? How can I fix it? Best Regards, Alexander Valitov -- View this message in context: http://www.nabble.com/Warning-from-ORe-stub-driver-tp22827840p22827840.html Sent from the L4 mailing list archive at Nabble.com.

4 7

Re: Do L4 Fiasco microkernel support multicore processor?
by Neohtm 03 May '09

03 May '09

> > > > Hi, > > On Wed Apr 22, 2009 at 11:40:31 +0800, Neohtm wrote: > > I would like to know whether the Fiasco microkernel is able to run on > > multicore processor such as Intel Core 2 Duo or Quad Core??? > > I want to try to compile the Fiasco + DOpE + L4Linux to run on it. > > >It will run there (albeit only use one CPU in the current version). So, Fiasco is able to detect the multicore platform and use the first core (CPU0) ? In that case, is it possible to launch the L4Linux in another specific core of the processor by adding kernel command (-nosmp, -isolcpus ) in l4linux26.cfg? > > > > > >Adam > -- > >Adam adam(a)os.inf.tu-dresden.de > > Lackorzynski http://os.inf.tu-dresden.de/~adam/ > > > > ------------------------------ > > _______________________________________________ > l4-hackers mailing list > l4-hackers(a)os.inf.tu-dresden.de > http://os.inf.tu-dresden.de/mailman/listinfo/l4-hackers > > > End of l4-hackers Digest, Vol 72, Issue 27 > ****************************************** >

2 1

USB mouse error
by Neohtm 29 Apr '09

29 Apr '09

Hi all, I tried to run the tudos-demo-cd.iso with qemu 'qemu -m 256 -cdrom tudos-demo-cd.iso -usbdevice mouse' and it's running perfectly with the usb mouse and keyboard. but when i tried on the one i'm compiled. the mouse and keyboard not functioning at all and returns a kernel panic. Please help..... Regards, neohtm Below are the output of the error. Welcome to Fiasco(ia32)! DD-L4(v2)/ia32 microkernel (C) 1998-2009 TU Dresden Rev: r438 compiled with gcc 4.3.2 for Intel Pentium [] Performance-critical config option(s) detected: CONFIG_NDEBUG is off CONFIG_NO_FRAME_PTR is off Enabling special fully nested mode for PIC Using the PIT (i8254) on IRQ 0 for scheduling SERIAL ESC: allocated IRQ 4 for serial uart SERIAL ESC: allocated IRQ 4 for serial uart Not using serial hack in slow timer handler. Absolute KIP Syscalls using: Sysenter CPU: GenuineIntel (6:3:3:0) Model: Pentium II (Klamath) at 1795 MHz 32 KB L1 I Cache (8-way associative, 64 bytes per line) 32 KB L1 D Cache (8-way associative, 64 bytes per line) 2048 KB L2 U Cache (8-way associative, 64 bytes per line) Freeing init code/data: 24576 bytes (6 pages) Calibrating timer loop... done. SIGMA0: Hello! KIP @ 1000 Found Fiasco: KIP syscalls: yes allocated 4KB for maintenance structures Roottask. Command line found: "(cd)/boot/l4/l4env/roottask task modname "loader" allow_cli task modname "bmodfs" attached 5 modules" 261695kB ( 255MB) total RAM (reported by bootloader) 234760kB ( 230MB) received RAM from Sigma0 34212kB ( 34MB) reserved RAM for RMGR Received I/O ports 0000-ffff Attached irqs = [ <!0> 1 <!2> 3 <!4> 5 6 7 8 9 A B C D E F 10 11 ] Roottask: Parsing command line config. configured task 0x00 (loader): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:1 mcp:ff prio:10 small:ff mods:0 configured task 0x00 (bmodfs): vm_offs:0 irq:3ffff lmcp:ffff allow_cli:0 mcp:ff prio:10 small:ff mods:5 Roottask: Loading 17 modules. #05: loading "(cd)/boot/l4/l4env/events" from [0612e000-0616fe99] to [01540000-01549190][0154a000-0155f590] entry at 0005f374 via trampoline page code symbols at [0eb74000-0eb76000] (8kB), lines at [0eb6d000-0eb74000] (28kB) #06: loading "(cd)/boot/l4/l4env/names --events" from [06170000-061b1c12] to [002d0000-002d6a37][002d7000-002e2000] entry at 0006037c via trampoline page code symbols at [0eb6b000-0eb6d000] (8kB), lines at [0eb65000-0eb6b000] (24kB) #07: loading "(cd)/boot/l4/l4env/log" from [061b2000-061efd07] to [00400000-00406eca][00407000-00439808] entry at 00061370 via trampoline page code symbols at [0eb63000-0eb65000] (8kB), lines at [0eb5d000-0eb63000] (24kB) #08: loading "(cd)/boot/l4/l4env/dm_phys --isa=0x00800000" from [061f0000-0628a8b4] to [01500000-01513cb7][01514000-0151e000] entry at 00062384 via trampoline page code symbols at [0eb58000-0eb5d000] (20kB), lines at [0eb4a000-0eb58000] (56kB) #09: loading "(cd)/boot/l4/l4env/simple_ts -t 300" from [0628b000-062d8310] to [01400000-01408dea][01409000-014185e8] entry at 0006337c via trampoline page code symbols at [0eb48000-0eb4a000] (8kB), lines at [0eb40000-0eb48000] (32kB) #0a: loading "(cd)/boot/l4/l4env/rtc" from [062d9000-06308a5c] to [01080000-010845c0][01085000-0108a000] entry at 00064370 via trampoline page code symbols at [0eb3e000-0eb40000] (8kB), lines at [0eb39000-0eb3e000] (20kB) #0b: loading "(cd)/boot/l4/l4env/l4io" from [06309000-0654a391] to [00c20000-00c45315][00c46000-00cb4000] entry at 00066370 via trampoline page code symbols at [0eae3000-0eb39000] (344kB), lines at [0eac9000-0eae3000] (104kB) #0c: loading "(cd)/boot/l4/l4env/l4dope" from [0654b000-066c2384] to [01b00000-01b45ef1][01b46000-01b8b000] entry at 00067374 via trampoline page code symbols at [0eabb000-0eac9000] (56kB), lines at [0ea8d000-0eabb000] (184kB) #0d: loading "(cd)/boot/l4/usb/usbcore" from [066c3000-068faac1] to [008e0000-0092600d][00927000-0094c000] entry at 00068374 via trampoline page code symbols at [0ea81000-0ea8d000] (48kB), lines at [0ea4b000-0ea81000] (216kB) #0e: loading "(cd)/boot/l4/usb/usbhid" from [068fb000-06aa0604] to [01900000-0193e269][0193f000-01966000] entry at 00069370 via trampoline page code symbols at [0ea42000-0ea4b000] (36kB), lines at [0ea17000-0ea42000] (172kB) #0f: loading "(cd)/boot/l4/l4env/bmodfs" from [06aa1000-06b48f8d] to [01220000-01238689][01239000-01250000] passing module (cd)/boot/l4/cfg/l4linux26.cfg [ 06b49000-06b49165 ] passing module (cd)/boot/l4/l4env/libloader.s.so [ 06b4a000-06be8f11 ] passing module (cd)/boot/l4/l4env/libld-l4.s.so [ 06be9000-06c62219 ] passing module (cd)/boot/l4/l4linux/vmlinuz [ 06c63000-07019183 ] passing module (cd)/boot/l4/l4linux/drops.rd [ 0701a000-0801a000 ] entry at 0006a46c via trampoline page code symbols at [0ea12000-0ea17000] (20kB), lines at [0e9ff000-0ea12000] (76kB) #10: loading "(cd)/boot/l4/l4env/loader --fprov=BMODFS l4linux26.cfg" from [0801a000-080f8b6d] to [01300000-013291c9][0132a000-01349000] entry at 0006b390 via trampoline page code symbols at [0e9f8000-0e9ff000] (28kB), lines at [0e9de000-0e9f8000] (104kB) ROOT: Sending ports 0070-0070 to task #0a ROOT: Sending ports 0080-0080 to task #0a ROOT: Sending ports 0071-0071 to task #0a names | Starting thread listening for `exit' events rtc | Date:29.04.2009 Time:07:33:01 simplets| Configured for 300 tasks. loader | Can't map tbuf status page usbcore | main(): DDE USB CORE initiaizing: usbcore | main(): Initializing DDE base system. io | Using platform configuration 'x86' ROOT: Sending ports 0cfb-0cfb to task #0b ROOT: Sending ports 0cf8-0cfb to task #0b ROOT: Sending ports 0cfe-0cff to task #0b io | PCI: Using configuration type 1 io | PCI: Probing PCI hardware io | PCI: Probing PCI hardware (bus 00) ROOT: Sending ports 0cfc-0cff to task #0b io | PCI: PIIX3: Enabling Passive Release on 00:01.0 io | Limiting direct PCI/PCI transfers. io | Activating ISA DMA hang workarounds. io | 00000000-ffffffff : PCI mem io | f0000000-f1ffffff : Cirrus Logic GD 5446 io | f2000000-f2000fff : Cirrus Logic GD 5446 io | 0000-ffff : PCI IO io | 0cf8-0cff : PCI conf1 io | b000-b03f : Intel Corporation 82371AB/EB/MB PIIX4 ACPI io | b100-b11f : Intel Corporation 82371AB/EB/MB PIIX4 ACPI io | c000-c00f : Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II] io | c020-c03f : Intel Corporation 82371SB PIIX3 USB [Natoma/Triton II] io | c100-c1ff : Realtek Semiconductor Co., Ltd. RTL-8029(AS) bmodfs | Passed the following modules: bmodfs | module "(cd)/boot/l4/cfg/l4linux26.cfg" (1kB) bmodfs | module "(cd)/boot/l4/l4env/libloader.s.so" (636kB) bmodfs | module "(cd)/boot/l4/l4env/libld-l4.s.so" (485kB) bmodfs | module "(cd)/boot/l4/l4linux/vmlinuz" (3801kB) bmodfs | module "(cd)/boot/l4/l4linux/drops.rd" (16384kB) loader | sleeping for 1000 ms io | Available IRQs=[ <!0> 1 <!2> 3 <!4> 5 6 7 8 9 a b c d e f 10 11 ] l4dope | L4INPUT native mode activated l4dope | L4INPUT: !!! W A R N I N G !!! l4dope | L4INPUT: Please, do not use Fiasco's "-esc" with L4INPUT. l4dope | L4INPUT: !!! W A R N I N G !!! ROOT: Sending ports 0060-006f to task #0b l4dope | Failed to disable AUX port, but continuing anyway... Is this a SiS? l4dope | If AUX port is really absent please use the 'i8042.noaux' option. l4dope | serio: i8042 KBD port at 0x60,0x64 irq 1 l4dope | input: AT Raw Set 2 keyboard on isa0060/serio0 l4dope | input: PC Speaker l4dope | input: L4 input event injector l4dope | L4 input event injector: IRQ handler up l4dope | connect "AT Raw Set 2 keyboard", isa0060/serio0/input0 l4dope | connect "PC Speaker", isa0061/input0 l4dope | connect "L4 input event injector", l4/sys l4dope | SharedMem(alloc): hl.raw=100000, id=44, size=800 l4dope | SharedMem(get_adr): address = 0x5000 l4dope | SharedMem(alloc): hl.raw=100000, id=45, size=800 l4dope | SharedMem(get_adr): address = 0x6000 l4dope | SharedMem(alloc): hl.raw=100000, id=46, size=800 l4dope | SharedMem(get_adr): address = 0x7000 l4dope | SharedMem(alloc): hl.raw=100000, id=47, size=800 l4dope | SharedMem(get_adr): address = 0xd000 l4dope | SharedMem(alloc): hl.raw=100000, id=48, size=800 l4dope | SharedMem(get_adr): address = 0xe000 l4dope | SharedMem(alloc): hl.raw=100000, id=49, size=800 l4dope | SharedMem(get_adr): address = 0xf000 l4dope | SharedMem(alloc): hl.raw=100000, id=4b, size=800 l4dope | SharedMem(get_adr): address = 0x16000 usbcore | main(): Initializing DDE kmalloc. usbcore | main(): Initializing DDE process. usbcore | main(): Initializing DDE timers. usbhid | l4dde_mm_init(): Using ... usbhid | 16 kB at 0x00002000 (vmem) usbhid | 128 kB in 1 regions (kmem) l4dope | SharedMem(alloc): hl.raw=100000, id=55, size=484 l4dope | SharedMem(get_adr): address = 0x20000 l4dope | dope: paddr=f0000000 size=4096KiB l4dope | Mapped video memory at f0000000 to 00400000+000000 [4096kB] via L4IO l4dope | mapping: vaddr=0x400000 size=4194304(0x400000) offset=0(0x0) l4dope | Frame buffer base: 0x400000 l4dope | Resolution: 1024x768x16 l4dope | Bytes per scanline: 2048 l4dope | Current video mode is 1024x768 red=11:5 green=5:6 blue=0:5 res=0:0 usbcore | main(): Initializing DDE softirq. usbcore | Softirq daemon starting usbcore | main(): Doing initcalls... usbcore | Initializing DDE page cache usbcore | <6>usbcore: registered new interface driver hub usbhid | register_chrdev(): called input usbhid | register_chrdev(): called usb usbhid | usb: registered new driver hub usbhid | usb: $Revision: 238 $ time 17:10:21 Apr 11 2009 usbhid | usb: High bandwidth mode enabled io | PCI: Setting latency timer of device 00:01.2 to 64 usbhid | /home/user/Desktop/tudos/l4/pkg/usbhid/server/lib-linux/contrib/usb/h usbhid : ost/usb-uhci.c: USB UHCI at I/O 0xc020, IRQ 9 ROOT: Sending ports c030-c031 to task #0e ROOT: Sending ports c032-c033 to task #0e ROOT: Sending ports c034-c035 to task #0e usbhid | usb: Detected 2 ports ROOT: Cannot send port c030 to task #0b, owner is #0e io | [B.2] l4io/server/src/res.c:414:l4_io_request_region_component(): io | sigma0 request for I/O ports [c020,c040) failed (err=0 dw1=0) io | --PANIC, 'g' for exit------------------------------------IP: 00c21185 [io] (b.02) jdb:

3 3

ORe + L4Linux network performance
by Alexander Valitov 28 Apr '09

28 Apr '09

Hi All, Could anyone please tell me? 1. Did someone measure a L4Linux network performance when ORe is in use? Are there any report or paper with results? 2. What about 1 Gbit/s cards (e.g. Intel e1000)? Were they tested? 3. How badly is influence of other running L4Linux processes on network performance? Best Regards, Alexander Valitov -- View this message in context: http://www.nabble.com/ORe-%2B-L4Linux-network-performance-tp23273467p232734… Sent from the L4 mailing list archive at Nabble.com.

3 3

vbeset support for GRUB
by Neohtm 24 Apr '09

24 Apr '09

Hi, I'm able to compile L4 Fiasco + DOpE + L4Linux and test run on Qemu. But when i run it on the real machine, the GRUB seems don't support for modaddr and vbeset command. I got the GRUB-0.97 source from Adam's website and compile successfully. But what is the next step after this in order to boot directly on the current machine? I tried to copy directly the compiled files to /boot/grub but it didn't shows the menu.lst instead of that, i'm also not sure about how to tftpboot to another machine? any site or instructions on how to achieve this? Please advise. Thanks Regards, neohtm

2 2

Do L4 Fiasco microkernel support multicore processor?
by Neohtm 22 Apr '09

22 Apr '09

Hi all, I would like to know whether the Fiasco microkernel is able to run on multicore processor such as Intel Core 2 Duo or Quad Core??? I want to try to compile the Fiasco + DOpE + L4Linux to run on it. Regards, neohtm

2 1

Where to find Grub for Fiasco?
by Sid Yu 20 Apr '09

20 Apr '09

It seems that I can't use standard GNU Grub to boot fiasco directly, since there're several commands not recognized by standard Grub such as "modaddr", "vbeset" and etc. However, I couldn't find the enhanced grub tailored for Fiasco. Following the instructions on http://os.inf.tu-dresden.de/drops/download.html, I have tried to check out the "grub" module from SVN using "$ ./repomgr co grub", but it doesn't make sense. Could anybody tell me where to find the grub for fiasco? -- View this message in context: http://www.nabble.com/Where-to-find-Grub-for-Fiasco--tp23112750p23112750.ht… Sent from the L4 mailing list archive at Nabble.com.

2 1

Re: DDE USB performance
by tapas kundu 18 Apr '09

18 Apr '09

Hi Dirk, sry 4 double posting.... I want dont know what you people exactly mean by double post ? Can I ask two questions in a single day on two diffrent topics? I want to measure usb performance. Could you please tell me how can I measure usbcam performance in terms of data transfer rate? Thanks Tapas On Sat, Apr 18, 2009 at 5:25 AM, Shakthi Kannan <shakthimaan(a)gmail.com>wrote: > Hi, > > You are repeatedly top-posting. Please don't do that in a mailing list! > http://en.wikipedia.org/wiki/Posting_style#Top-posting > > You need to use bottom-posting. > http://en.wikipedia.org/wiki/Posting_style#Bottom-posting > > For web camera software, try looking at Gnome Cheese program. > > SK > > -- > Shakthi Kannan > http://www.shakthimaan.com >

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l4-hackers April 2009