Re: [PATCH 2/2] siw: Add support for CRC32C offload instruction usinglibcrypto crc32c-intel

From: Andi Kleen
Date: Wed Sep 22 2010 - 16:39:50 EST


On 9/22/2010 10:30 PM, Nicholas A. Bellinger wrote:
From: Nicholas Bellinger<nab@xxxxxxxxxxxxxxx>

This patch updates siw_create_qp() to check for the CONFIG_X86 + cpu_has_xmm4_2
dependent use of the CRC32C instruction offload using libcrypto crc32c-intel.ko.
This patch will by default use crc32c-intel when available, and fall back to the
legacy slicing by 1x libcrypto crc32c.ko code when the instruction offload is not
availabe.

I don't think every caller should handle checks like this. The crypto layer should load the right driver
instead and provide the best driver under a generic algorithm name.

Need CPUID module auto probing. I have an older patch that needs some fixes.

-Andi

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