Hello, I'm trying to simulate Android Kitkat on Gem5 with multi-core ARM configuration.
Actually, this image runs well on "single-core ARM configuration". However, if I add a gem5 flag option "--num-cpus=4" and change its dts file as "vexpress-v2p-ca15-tc1-gem5_4cpus.dtb", it crashes during booting Android platform. (For single-core simulation, I used "vexpress-v2p-ca15-tc1-gem5.dtb".) I found a message as following. I guess that there is a missing configuration about snooping for multi-core simulation. I wonder if Gem5 officially supports multicore simulation for ARM architecture. Otherwise, is there any additional configuration or modification on system setting that I should? <ERROR LOG> $ ./build/ARM/gem5.fast configs/example/fs.py --dtb-filename=vexpress-v2p-ca15-tc1-gem5_4cpus.dtb --kernel=vmlinux.arm.kk --disk=gem5-aosp-4.4.4_r2.img --os-type=android-kitkat --num-cpus=4 --enable-nomali --mem-size=2048MB --caches --l2cache --l1i_size=32kB --l1d_size=32kB --l2_size=2MB --l1i_assoc=2 --l1d_assoc=2 --l2_assoc=16 ... panic condition !invalidate && !pkt->hasSharers() occurred: system.cpu1.dcache is passing a Modified line through WriteReq to 0xe4a7d840, but keeping the block @ tick 7095687054500 [handleSnoop:build/ARM/mem/cache/cache.cc, line 2055] Memory Usage: 2530324 KBytes Program aborted at tick 7095687054500 --- BEGIN LIBC BACKTRACE --- ./build/ARM/gem5.fast(_Z15print_backtracev+0x1f)[0x160567f] ./build/ARM/gem5.fast(_Z12abortHandleri+0x34)[0x16057a4] /lib/x86_64-linux-gnu/libpthread.so.0(+0x10330)[0x7ff4849ab330] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x37)[0x7ff48460cc37] /lib/x86_64-linux-gnu/libc.so.6(abort+0x148)[0x7ff484610028] ./build/ARM/gem5.fast(_Z15__exit_epilogueiPKcS0_iS0_+0x33a)[0x15c997a] ./build/ARM/gem5.fast[0xd1c684] ./build/ARM/gem5.fast(_ZN5Cache11handleSnoopEP6PacketP8CacheBlkbbb+0x719)[0x1127679] ./build/ARM/gem5.fast(_ZN5Cache11MemSidePort15recvAtomicSnoopEP6Packet+0x159)[0x11279e9] ./build/ARM/gem5.fast[0xe99eea] ./build/ARM/gem5.fast[0x117377b] ./build/ARM/gem5.fast(_ZN5Cache10recvAtomicEP6Packet+0xd7)[0x116e8b7] ./build/ARM/gem5.fast(_ZN15AtomicSimpleCPU8writeMemEPhjmjPm+0x48a)[0xe2af5a] ./build/ARM/gem5.fast[0xc5b891] ./build/ARM/gem5.fast(_ZNK10ArmISAInst15MicroStrDBFpUop7executeEP11ExecContextPN5Trace10InstRecordE+0x248)[0x102d4a8] ./build/ARM/gem5.fast(_ZN15AtomicSimpleCPU4tickEv+0x2a1)[0x1581661] ./build/ARM/gem5.fast(_Z9doSimLoopP10EventQueue+0x221)[0xdf5601] ./build/ARM/gem5.fast(_Z8simulatem+0x23f)[0xdf595f] ./build/ARM/gem5.fast[0xdf6025] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x45f7)[0x7ff4841feaf7] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x80d)[0x7ff48420054d] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x48d8)[0x7ff4841fedd8] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x4b59)[0x7ff4841ff059] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x4b59)[0x7ff4841ff059] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x80d)[0x7ff48420054d] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCode+0x32)[0x7ff484200682] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x563e)[0x7ff4841ffb3e] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x80d)[0x7ff48420054d] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x48d8)[0x7ff4841fedd8] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x80d)[0x7ff48420054d] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyEval_EvalCode+0x32)[0x7ff484200682] /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0(PyRun_StringFlags+0x79)[0x7ff4841fa4b9] --- END LIBC BACKTRACE --- ./run_android_kitkat_ver11-4cores.sh: line 34: 28390 Aborted (core dumped) ./build/ARM/gem5.fast configs/example/fs.py $GEM5_BASE_OPTIONS Sincerely, Gyeonghwan Hong. -- Gyeonghwan Hong Ph.D Student Embedded Software Lab. Department of Electrical and Computer Engineering Sungkyunkwan University
_______________________________________________ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
