svn commit: r364875 - head

[Warner Losh]

Author: imp
Date: Thu Aug 27 17:30:57 2020
New Revision: 364875
URL: https://svnweb.freebsd.org/changeset/base/364875

Log:
  Add note about NO_CLEAN build.
  
  NO_CLEAN doesn't quite work for some scenarios when rebuilding older
  kernels, but the kernels build w/o NO_CLEAN.

Modified:
  head/UPDATING

Modified: head/UPDATING
==============================================================================
--- head/UPDATING	Thu Aug 27 17:04:55 2020	(r364874)
+++ head/UPDATING	Thu Aug 27 17:30:57 2020	(r364875)
@@ -32,6 +32,10 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 13.x IS SLOW:
 	'zpool upgrade' for the next few weeks. The change should be transparent
 	unless you  want to use new features.
 
+	Not all "NO_CLEAN" build scenarios work across these changes. Many
+	scenarios have been tested and fixed, but rebuilding kernels without
+	rebuilding world may fail.
+
 20200824:
 	The resume code now notifies devd with the 'kernel' system
 	rather than the old 'kern' subsystem to be consistent with