[lkml]   [2011]   [Mar]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [RFC 12/12] iscsi-target: Add Makefile/Kconfig and update TCM top level
On Wed, Mar 02, 2011 at 01:32:11PM -0800, Nicholas A. Bellinger wrote:
> The kernel code itself that is specific to using the SSE v4.2
> instruction for CRC32C offload are using #ifdef CONFIG_X86 stubs in
> iscsi_target_login.c:iscsi_login_setup_crypto(), and !CONFIG_X86 will
> default to using the unoptimized 1x8 slicing soft CRC32C code. This
> particular piece of logic has been tested on powerpc and arm and is
> funcitoning as expected from the kernel level using the arch independent
> soft code.

I don't think you need that code at all. The crypto code is structured
to prefer the optimized implementation if it is present. Just stripping
the x86-specific code out and always requesting the plain crc32c
algorithm should give you the optimized one if it is present on your

Please give it a try.

 \ /
  Last update: 2011-03-03 15:21    [W:0.136 / U:21.860 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site