That sounds great. Thanks for the update.|
Sang-bum Suh wrote:
Hi, Excellent ! The released para-virtualized Linux 2.6.21 kernel for the Xen ARM project would run on the Xen ARM on Android emulator. However, you may need a patch to run an Android platform on Linux kernel 2.6.21 and port device drivers to Android emulator, as there is a problem with Linux kernel version and Android platform. Try and download vanila Linux kernel and then update it with Para-virt Linux files of the package at http://wiki.xensource.com/xenwiki/XenARM. For more details, please refer to section 2.2.2. of the Secure Xen on ARM user's guide at the web page. FYI, I can release para-virtualized Linux kernel 2.6.27 next year of which Linux kernel version does not need such Android patch. Thanks, Sang-bum ------- Original Message ------- Sender : Michael R. Hines<michael@xxxxxxxxxxxx> Date : 2009-10-20 08:19 (GMT+09:00) Title : Re: [XenARM] android emulator Actually, I got it to work. The problem was that that I was compiling on a 64-bit version of the ARM-ported emulator instead of a 32-bit version, so I logged into a 32-bit machine and attempted to compile it. However, there was one snag before it worked: a patch is needed: --- Taken from http://code.google.com/p/android/issues/detail?id=838 1.) A -msse2 cflags is missing in Makefile.target which make _mm_add_si64 cannot be found: /android-emulator-20080826/qemu/skins/skin_argb.h:286: warning: implicit declaration of function â_mm_add_si64â /android-emulator-20080826/qemu/skins/skin_argb.h:286: error: incompatible types in assignment 2.) The error comment in build-emulator.sh is wrong. Patch: --- qemu.orig/Makefile.target 2008-08-29 10:01:41.000000000 +0800 +++ qemu/Makefile.target 2008-08-29 10:01:24.000000000 +0800 @@ -39,7 +39,7 @@ endif ifeq ($(ARCH),i386) OP_CFLAGS=$(CFLAGS) -O2 -fomit-frame-pointer -CFLAGS+=-DUSE_MMX -mmmx +CFLAGS+=-DUSE_MMX -mmmx -msse2 ifneq ($(CONFIG_DARWIN),yes) OP_CFLAGS+= -mpreferred-stack-boundary=2 else Once I applied this on a 32-bit Ubuntu 9.04 server box, the compile succeeded and the two mini-os domains started running inside the emulator. Cool stuff! Thank you very much for your quick response. What is the possibility of getting a full linux-2.6.21-arm running inside the emulator? Is that possible right now? - Michael Caz Yokoyama wrote:Hello Michael, What optimization option do you use? -O2? -O0? Don't use -O0. You will have segfault. Could you run backtrace command on segfault? In addition, please provide more detail of your environment. -caz P.S. You may not hear from anybody other than me. This is a very quiet mailing list. -----Original Message----- From: xen-arm-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-arm-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Michael R. Hines Sent: Monday, October 19, 2009 12:58 PM To: xen-arm@xxxxxxxxxxxxxxxxxxx Subject: [XenARM] android emulator Greetings, I have followed all the instructions in the Secure XenARM manual and I went through section A.2 on how to build XenARM for the Android emulator. I successfully built the arm-port of Xen as well as the arm-port of mini-os and I built the patched version of QEMU 0.82. When I tried to run the emulator, I get a segfault - From what I can tell, the fault occurs at the very first instruction when QEMU attempts to start running the Xen hypervisor. Here is the output of a sample GDB session: $ gdb emulator $ (gdb) run -guest0 0x01c00000 mini-os.elf -guest1 0x02c00000 mini-os.elf -show-kernel -system ./images -shell -qemu -s Starting program: ../android-emulator-xen_arm/emulator -guest0 0x01c00000 mini-os.elf -guest1 0x02c00000 mini-os.elf -show-kernel -system ./images -shell -qemu -s [Thread debugging using libthread_db enabled] guest0 - mini-os.elf guest1 - mini-os.elf [New Thread 0x7f32a807c6f0 (LWP 5913)] [New Thread 0x7f329e9f0950 (LWP 5916)] [New Thread 0x7f329e1ef950 (LWP 5917)] Waiting gdb connection on port 1234 Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7f32a807c6f0 (LWP 5913)] 0x0000000000000000 in ?? () (gdb) Any ideas on where I could start debugging this? Or are there updated patches to make this work?
-- /* * Michael R. Hines * Post-Doc, Dept. of Computer Science * http://www.cs.columbia.edu/~mhines/ * Live long and prosper... */
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