3rd-party/linux-kernel-module-cheat
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run: make gem5-shell work even when not on cwd

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Ciro Santilli 六四事件 法轮功
2019-07-14 00:00:01 +00:00
parent 85be87d71c
commit f9fc7aa372
3 changed files with 2 additions and 64 deletions
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62
README.adoc
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@@ -10090,68 +10090,6 @@ Build the kernel with the <<gem5-arm-linux-kernel-patches>>, and then run:
; ;
.... ....
====== gem5 X86 multicore TimingSimpleCPU hangs
Original report: https://stackoverflow.com/questions/56642695/a-working-linux-kernel-gem5-config-for-fs-boot-up-in-x86-smp/56644363#56644363
At 08c79a194d1a3430801c04f37d13216cc9ec1da3:
....
./run --cpus 2 --emulator gem5 -- --cpu-type TimingSimpleCPU --caches --l2cache
....
Boot hangs, the last terminal message is:
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pci 0000:00:04.0: legacy IDE quirk: reg 0x1c: [io 0x0376]
....
and a bit above we can see the suspicious message:
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[Firmware Bug]: CPU1: APIC id mismatch. Firmware: 1 APIC: 0
....
====== gem5 ARM multicore HPI boot fails
Original report: https://www.mail-archive.com/gem5-users@gem5.org/msg16677.html
At d334a0db538db1a82db62fd5f74a169ca9e21f23 + 1:
....
./run --arch aarch64 --emulator gem5 --cpu 2 -- --cpu-type=HPI --caches --l2cache --l1d_size=64kB --l1i_size=64kB --l2_size=256kB
....
The simulator fails with:
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Exiting @ tick 18446744073709551615 because simulate() limit reached
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and the last log message is:
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<6>[ 0.103629] printk: console [ttyAMA0] enabled
....
With 1 core, boot works, and the next message would have been:
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<3>[ 0.103586] OF: amba_device_add() failed (-2) for /kmi@1c070000
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With `TimingSimpleCPU`, boot went further, also failed with those options just after init finished, the last message is:
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root@buildroot#
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and once again we have:
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Exiting @ tick 18446744073709551615 because simulate() limit reached
....
===== gem5 cache size ===== gem5 cache size
https://stackoverflow.com/questions/49624061/how-to-run-gem5-simulator-in-fs-mode-without-cache/49634544#49634544 https://stackoverflow.com/questions/49624061/how-to-run-gem5-simulator-in-fs-mode-without-cache/49634544#49634544

2
bisect-gem5-linux-boot
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@@ -7,7 +7,7 @@ root_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"
set +e set +e
# Setup for quick failures: # Setup for quick failures:
# https://stackoverflow.com/questions/4713088/how-to-use-git-bisect/22592593#22592593 # https://stackoverflow.com/questions/4713088/how-to-use-git-bisect/22592593#22592593
timeout 5 "${root_dir}/run" --emulator gem5 --gem5-build-id bisect --quit-after-boot "$@" timeout 400 "${root_dir}/run" --emulator gem5 --gem5-build-id bisect --quit-after-boot "$@"
if [ $? -ne 124 ]; then if [ $? -ne 124 ]; then
exit 1 exit 1
fi fi

2
run
View File

@@ -723,7 +723,7 @@ Extra options to append at the end of the emulator command line.
tmux_args = '--run-id {}'.format(self.env['run_id']) tmux_args = '--run-id {}'.format(self.env['run_id'])
if self.env['tmux_program'] == 'shell': if self.env['tmux_program'] == 'shell':
if self.env['emulator'] == 'gem5': if self.env['emulator'] == 'gem5':
tmux_cmd = './gem5-shell' tmux_cmd = os.path.join(self.env['root_dir'], 'gem5-shell')
else: else:
raise Exception('--tmux-program is only supported in gem5 currently.') raise Exception('--tmux-program is only supported in gem5 currently.')
elif self.env['tmux_program'] == 'gdb': elif self.env['tmux_program'] == 'gdb':