On 29/08/2023 13:22, Victor Ivanov wrote:
Hello,
I will soon be upgrading from a mobile Skylake platform to a desktop
Ryzen 7000 series and a full re-install is not an option unless all
else fails. I'm thinking of simply moving the drive and recompile as
necessary. I don't see why this wouldn't work, but wanted to double
check with the community just in case.
The only thing I did after upgrading to a different platform (Intel to
AMD) is *first* switching to sys-kernel/gentoo-kernel-bin on the old
system, move my storage devices to the new system, and then switch back
to sys-kernel/gentoo-sources on the new system.
gentoo-kernel-bin is a pre-compiled kernel that serves as a fallback in
case gentoo-sources won't boot. My CFLAGS are:
-O2 -pipe -mtune=native -march=native -ftree-vectorize
and didn't need changing. CPU_FLAGS_X86 did of course did need changing
(with cpuid2cpuflags.)
Usually, critical packages that serve to get you a command-line login
don't end up using amy "weird" CPU instructions (like AVX512 or
whatever), but other packages might. So it's best to rebuild @world once
your new system can boot.
