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Date: Wed, 22 Sep 2010 22:39:39 +0200 From: Andi Kleen <ak@...ux.intel.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>, David Miller <davem@...emloft.net>, Matthew Wilcox <willy@...ux.intel.com>, Roland Dreier <rdreier@...co.com> Subject: Re: [PATCH 2/2] siw: Add support for CRC32C offload instruction using libcrypto crc32c-intel On 9/22/2010 10:30 PM, Nicholas A. Bellinger wrote: > From: Nicholas Bellinger<nab@...ux-iscsi.org> > > 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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