The dist kernel packages have default arm64 configs, but the base profile forces savedconfig so they're not used. The arm64 profile needs the following section to fix it. (I only tried gentoo-kernel, but I assume vanilla-kernel works the same.) https://github.com/gentoo/gentoo/blob/master/profiles/arch/amd64/package.use.force#L8-L11
You're right, thanks! Same for ppc64le.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=cc542eea471bbd0fea101ff35e52e86a98c5a5fb commit cc542eea471bbd0fea101ff35e52e86a98c5a5fb Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2021-02-18 23:10:17 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2021-02-18 23:35:20 +0000 profiles/arch: Unforce gentoo-kernel[savedconfig] for more arches Closes: https://bugs.gentoo.org/771321 Signed-off-by: Michał Górny <mgorny@gentoo.org> profiles/arch/arm64/package.use.force | 7 ++++++- profiles/arch/powerpc/ppc64/64le/package.use.force | 7 +++++++ 2 files changed, 13 insertions(+), 1 deletion(-)