Use CRC32-Extension on ARM-CPU for BTRFS

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Use CRC32-Extension on ARM-CPU for BTRFS

Postby Sylvan » Sun May 12, 2019 9:04 am

I'm using BTRFS on an RPi 3B+. BTRFS makes heavy use of CRC32 for its checksums.
According to lscpu, the CPU (a cortex-A53 ARM7) also has a hardware implementation of CRC32. However, BTRFS only uses crc32-generic.

Is it possible to use the hardware implementation for CRC32 of the CPU for BTRFS (and other things)?
Sylvan
 
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