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 system. Please give it a try. -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
