Date: Tue, 25 May 2010 16:37:12 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: "Matthew Fleming" <matthew.fleming@isilon.com> Cc: freebsd-arch@freebsd.org Subject: Re: crc32 table Message-ID: <72207.1274805432@critter.freebsd.dk> In-Reply-To: Your message of "Tue, 25 May 2010 09:34:48 MST." <06D5F9F6F655AD4C92E28B662F7F853E021D4D9D@seaxch09.desktop.isilon.com>
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In message <06D5F9F6F655AD4C92E28B662F7F853E021D4D9D@seaxch09.desktop.isilon.co m>, "Matthew Fleming" writes: >Is there an interest in another crc32 implementation for the kernel = >which uses this polynomial and uses the SSE 4.2 instruction when = >available? (This support would require kib's FPU patch). It would be a better idea to add a kernel facility to build a CRC table to a given polynomial. The code to do this is very compact and would take up less space than N CRC tables which are likely not used in most running kernels. Poul-Henning -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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