* Yu-cheng Yu <yu-cheng...@intel.com> wrote: > AVX was mistakenly believed to be dependent on eagerfpu switch. > This turns out to be false. The earlier patch should be reverted. > > Original patch: > http://git.kernel.org/tip/394db20ca240741a08d472173db13d6f6a6e5a28
So the original patch had a whole host of explanations of why that change is correct. This revert should explain where that argumentation was wrong. Also note that eagerfpu=off is on the way out, on v4.6 we'll switch all CPUs to eagerfpu: 58122bf1d856 x86/fpu: Default eagerfpu=on on all CPUs and in the not so distant future, if everything goes fine with the eager mode, I'd like to drop the lazy FPU context switching code altogether - which will simplify a lot of code. At that point the 'eagerfpu' boot option will go away as well. Thanks, Ingo