Hi, On Fri, 2016-07-29 at 19:26 +0300, Ruslan Bilovol wrote: > Also for some reason in case of 'load and kexec the kernel' it > takes 1-2 minutes to start booting after I do kexec -e, need to > investigate it further. You could try my patch ("purgatory: Change default sha256 optimization to -O2") in my master branch: https://git.kernel.org/cgit/linux/kernel/git/geoff/kexec-tools.git/log/ Other have said it helped. -Geoff