I've adapted http://clemens.endorphin.org/patches/aes-i586-asm-2.5.58.diff for 2.4.22-rc2, and put it up at http://www.kernel.org/pub/linux/kernel/people/hvr/testing/patch-aes-asm-2.4.22-rc2.0 for now you can build either a generic aes cipher, or the asm optimized one (if you configured for a pentium compatible arch); should work for static linkage as well as for module building; I compared its performance to the gcc-3.2.2 compiled c implementation of the AES algo wrt to cryptoloop usage, and got the following results on an old pentium classic @ 133mhz box (the data was acquired with "zcav -b 10M /dev/loop0"): C-version ASM-version aes-cbc-128 ~860K/s ~1300K/s aes-cbc-256 ~690K/s ~1050K/s thus the ASM version results in ~50% more throughput on a p5-133mhz for my simple test; it would be interesting to know how the ASM version performs relative to the C-version on pentiumII/III/IV's/... since the inclusion of the asm optimized AES in 2.6.0-test3 depends on whether there are significant gains on other chips but pentium-classics regards, -- Herbert Valerio Riedel / Phone: (EUROPE) +43-1-58801-18840 Email: hvr@xxxxxxxxxx / Finger hvr@xxxxxxx for GnuPG Public Key GnuPG Key Fingerprint: 7BB9 2D6C D485 CE64 4748 5F65 4981 E064 883F 4142
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