On Thu, Aug 11, 2011 at 4:50 PM, Andy Lutomirski <luto@xxxxxxx> wrote: > I have vague plans to clean up extended state handling and make > kernel_fpu_begin work efficiently from any context. (i.e. the first > kernel_fpu_begin after a context switch could take up to ~60 ns on Sandy > Bridge, but further calls to kernel_fpu_begin would be a single branch.) > > The current code that handles context switches when user code is using > extended state is terrible and will almost certainly become faster in the > near future. Sounds good! This would not only improve the performance of sha1_ssse3 but of aesni as well. > Hopefully I'll have patches for 3.2 or 3.3. > > IOW, please don't introduce another thing like the fpu crypto module quite > yet unless there's a good reason. I'm looking forward to deleting the fpu > module entirely. I've no intention to. So please go ahead and do so. Mathias -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
