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C1 - Huge Pages

This PoC is used in Section 6.1 of the paper. We use the huge pages to find contiguous memory.

This PoC consists of one part:

Building the PoC

The PoC features both release and debug versions. The debug version verifies with privileged interfaces if the extracted chunks are contiguous.

Release version:

make

Debug version:

make DEBUG=1

The Makefile builds both aarch64 and x86 versions. The PoC requires huge pages as on the Chromebooks.

Running the PoC

To run the PoC on the Chromebooks, run:

./c1_huge_pages_aarch64

Expected output:

running in DEBUG!
...
Chunk: 0x760d800000 + [  2048.0 kB] -> c
Chunk: 0x760da00000 + [  2048.0 kB] -> c
Chunk: 0x760dc00000 + [  2048.0 kB] -> c
Chunk: 0x760de00000 + [  2048.0 kB] -> c
Chunk: 0x760e000000 + [  2048.0 kB] -> c
Chunk: 0x760e200000 + [  2048.0 kB] -> c
Chunk: 0x760e400000 + [  2048.0 kB] -> c
Chunk: 0x760e600000 + [  2048.0 kB] -> c
Chunk: 0x760e800000 + [  2048.0 kB] -> c
Chunk: 0x760ea00000 + [  2048.0 kB] -> c
Chunk: 0x760ec00000 + [  2048.0 kB] -> c
Took 20000 ns to check 409600000 bytes = 19073.486328 GBps

Paper result:

From 6.1. Paragraph Evaluation:

  • less than 10 seconds runtime