Re: [PATCH 0/4] arm64: wire CRC32 instructions into core crc32 routines

From: Theodore Y. Ts'o
Date: Mon Aug 27 2018 - 10:54:06 EST

On Mon, Aug 27, 2018 at 01:02:41PM +0200, Ard Biesheuvel wrote:
> While this is not known to cause performance issues, calling a table based
> time variant implementation with a non-negligible D-cache footprint (8 KB)
> is wasteful in any case, and now that the crc32 instructions have been made
> mandatory in the architecture, let's wire them up into the core crc routines.

Stupid question --- are there any arm64 SOC's out there which do *not*
have the crc32 instructions? Presumably there won't be in the future,
because it's now mandatory --- but where there any in the past?

- Ted