On emerging the link /usr/src/linux should be updated so it points to the new /usr/src/linux-xxxx directory. Otherwise things like emerge @module-rebuild won't use the new kernel.
It is updated if it's been pointing to gentoo-kernel already. You need to update it yourself on the first install, as I don't want to break people's custom setups.
Nice. Thank you for the clarification.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=1ffccd123f180f1aa01725fdc387564966d490e9 commit 1ffccd123f180f1aa01725fdc387564966d490e9 Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2020-04-29 06:48:52 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2020-04-29 06:50:19 +0000 kernel-install.eclass: Print elog about symlink update Bug: https://bugs.gentoo.org/719910 Signed-off-by: Michał Górny <mgorny@gentoo.org> eclass/kernel-install.eclass | 7 +++++++ 1 file changed, 7 insertions(+)