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Message-ID: <20100922220611.GL11157@obsidianresearch.com>
Date:	Wed, 22 Sep 2010 16:06:11 -0600
From:	Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To:	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>,
	linux-rdma <linux-rdma@...r.kernel.org>,
	Bernard Metzler <BMT@...ich.ibm.com>
Subject: Re: [PATCH 2/2] siw: Add support for CRC32C offload instruction
	using libcrypto crc32c-intel

On Wed, Sep 22, 2010 at 02:38:31PM -0700, Nicholas A. Bellinger wrote:

> So I think the main bit here is the ability to request
> crc32c-intel.ko first, and then fall back to crc32c.ko when the
> former is not available on CONFIG_X86.

Well, it is what Andi said, everything is working fine but there is no
mechanism to autoload the accelerated crypto module. If you did
modprobe crc32c_intel prior to loading your driver it would
automatically get crc32c-intel when it asks for crc32c since it is
loaded and a higher priority.

So, the drivers are correct to just request crc32c .. The work around
to limited autoprobing is so trivial (modprob crc32_intel) I'm not
sure including extra autoprobing code in the drivers is worthwhile?

Jason
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