diff options
author | John Baldwin <jhb@FreeBSD.org> | 2019-03-08 18:53:54 +0000 |
---|---|---|
committer | John Baldwin <jhb@FreeBSD.org> | 2019-03-08 18:53:54 +0000 |
commit | 0f529a609e39ce6290fe9e8d9bcfcf72db52aa37 (patch) | |
tree | d276270c9e1ffac7ecaedb0c8c1c19c32a853b62 /UPDATING | |
parent | 73c5671fe39a1a6edff6508fd903b06869230cc7 (diff) | |
download | src-0f529a609e39ce6290fe9e8d9bcfcf72db52aa37.tar.gz src-0f529a609e39ce6290fe9e8d9bcfcf72db52aa37.zip |
MFC 343048:
Update the note about the need for COMPAT_FREEBSD<n> kernel options.
Rather than mentioning the requirement for 4.x binaries but not
explaining why (it was assuming an upgrade from 4.x to 5.0-current),
explain when compat options are needed (for running existing host
binaries) in a more general way while using a more modern example
(COMPAT_FREEBSD11 for 11.x binaries). While here, explicitly mention
that a GENERIC kernel should always work.
Notes
Notes:
svn path=/stable/12/; revision=344927
Diffstat (limited to 'UPDATING')
-rw-r--r-- | UPDATING | 13 |
1 files changed, 7 insertions, 6 deletions
@@ -1867,12 +1867,13 @@ COMMON ITEMS: can be deleted by "make delete-old-libs", but you have to make sure that no program is using those libraries anymore. - [8] In order to have a kernel that can run the 4.x binaries needed to - do an installworld, you must include the COMPAT_FREEBSD4 option in - your kernel. Failure to do so may leave you with a system that is - hard to boot to recover. A similar kernel option COMPAT_FREEBSD5 is - required to run the 5.x binaries on more recent kernels. And so on - for COMPAT_FREEBSD6 and COMPAT_FREEBSD7. + [8] The new kernel must be able to run existing binaries used by + an installworld. When upgrading across major versions, the new + kernel's configuration must include the correct COMPAT_FREEBSD<n> + option for existing binaries (e.g. COMPAT_FREEBSD11 to run 11.x + binaries). Failure to do so may leave you with a system that is + hard to boot to recover. A GENERIC kernel will include suitable + compatibility options to run binaries from older branches. Make sure that you merge any new devices from GENERIC since the last time you updated your kernel config file. |