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Date:      Tue, 20 Mar 2018 03:36:51 +0000 (UTC)
From:      Warner Losh <imp@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   svn commit: r331236 - head
Message-ID:  <201803200336.w2K3ap6k028353@repo.freebsd.org>

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Author: imp
Date: Tue Mar 20 03:36:51 2018
New Revision: 331236
URL: https://svnweb.freebsd.org/changeset/base/331236

Log:
  Note: this isn't a general thing. It only affects u-boot-based arm64
  systems. Make sure the note says that specific case only. Also,
  provide a recipe to do it.
  
  Sponsored by: Netflix

Modified:
  head/UPDATING

Modified: head/UPDATING
==============================================================================
--- head/UPDATING	Tue Mar 20 02:54:32 2018	(r331235)
+++ head/UPDATING	Tue Mar 20 03:36:51 2018	(r331236)
@@ -52,11 +52,22 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 12.x IS SLOW:
 ****************************** SPECIAL WARNING: ******************************
 
 20180319:
-	For UEFI systems: the UEFI loader(8), loader.efi, should be updated in
-	conjunction with installing a new kernel after r330868. The kernel,
-	after this revision, will be more lenient when mapping addresses for
-	UEFI Runtime Services and this may result in a kernel panic without the
-	corresponding loader(8) update.
+	For u-boot based arm64 UEFI systems: the UEFI loader(8), loader.efi,
+	should be updated in conjunction with installing a new kernel after
+	r330868. The kernel, after this revision, will be more lenient when
+	mapping addresses for UEFI Runtime Services and this may result in a
+	kernel panic without the corresponding loader(8) update. If you have a
+	recent kernel, you can do a installkernel / installworld and then reboot
+	as there's no recent syscall changes. If you have an older kernel and/or
+	a 11.x system, the following sequence is safe:
+		% make buildworld
+		% make buildkernel
+		% sudo make installkernel
+		% cd stand
+		% sudo make install
+		% sudo reboot
+		...
+		% sudo make installworld
 
 20180212:
 	FreeBSD boot loader enhanced with Lua scripting. It's purely opt-in for



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