Am 13.03.2012 18:45, schrieb Frank Steinmetzger: > On Tue, Mar 13, 2012 at 05:11:47PM +0100, Florian Philipp wrote: > >>> Since I am planning to encrypt only home/ under LVM control, what kind >>> of overhead should I expect? >> >> What do you mean with overhead? CPU utilization? In that case the >> overhead is minimal, especially when you run a 64-bit kernel with the >> optimized AES kernel module. > > Speaking of that... > I always wondered what the exact difference was between AES and AES i586. I > can gather myself that it's about optimisation for a specific architecture. > But which one would be best for my i686 Core 2 Duo?
From what I can see in the kernel sources, there is a generic AES implementation using nothing but portable C code and then there is "aes-i586" assembler code with "aes_glue" C code. So I assume the i586 version is better for you --- unless GCC suddenly got a lot better at optimizing code.
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