This repository contains code and data for DREAMSCAPE: Dynamic cache Replacement policy for Evading ARM Side Channels by Aggregating Performance Events
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gcc --version = gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0 -
uname -a = Linux ubuntu 5.4.0-1069-raspi #79-Ubuntu SMP PREEMPT Thu Aug 18 18:15:22 UTC 2022 aarch64 aarch64 aarch64 GNU/Linux -
cat /proc/cpuinfo
processor : 0
BogoMIPS : 38.40
Features : fp asimd evtstrm crc32 cpuid
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4
processor : 1
BogoMIPS : 38.40
Features : fp asimd evtstrm crc32 cpuid
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4
processor : 2
BogoMIPS : 38.40
Features : fp asimd evtstrm crc32 cpuid
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4
processor : 3
BogoMIPS : 38.40
Features : fp asimd evtstrm crc32 cpuid
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4
Hardware : BCM2835
Revision : a020d3
Serial : 000000004fea7bcb
Model : Raspberry Pi 3 Model B Plus Rev 1.3
file arm_pmu_experiments/pmu_cycle_count
arm_pmu_experiments/pmu_cycle_count: ELF 64-bit LSB shared object, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, BuildID[sha1]=0b3ef6ba583860f3c65cb89c2f0ca24073623194, for GNU/Linux 3.7.0, not stripped
contains example c code and binaries for enabling PMU for cache miss and cycle counts
kernel module to track L1 I and D caches for misses and refills
basic examples of enabling and reading from PMU registers
to test the kernel module, QEMU was used based partly on this tutorial:
https://translatedcode.wordpress.com/2017/07/24/installing-debian-on-qemus-64-bit-arm-virt-board/
the command to run the setup is:
qemu-system-aarch64 -M virt -m 1024 -cpu cortex-a53 \
-kernel vmlinuz-4.19.0-23-arm64 \
-initrd initrd.img-4.19.0-23-arm64 \
-append 'root=/dev/vda2' \
-drive if=none,file=hda.qcow2,format=qcow2,id=hd \
-device virtio-blk-pci,drive=hd \
-netdev user,id=mynet \
-device virtio-net-pci,netdev=mynet \
-nographic
The QEMU image emulates a single core ARM Cortex A53:
$ uname -a
Linux debian 4.19.0-23-arm64 #1 SMP Debian 4.19.269-1 (2022-12-20) aarch64 GNU/Linux
$ cat /proc/cpuinfo
processor : 0
BogoMIPS : 125.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4
View module commands for instructions on running this module
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