git: fdef22474f - main - relnotes/13.0: add note about jail(8) cpuset behavior

[Kyle Evans]

The branch main has been updated by kevans (ports, src committer):

URL: https://cgit.FreeBSD.org/doc/commit/?id=fdef22474f7a79bb6cb918fc391fab4384ec5ac1

commit fdef22474f7a79bb6cb918fc391fab4384ec5ac1
Author:     Kyle Evans <kevans at FreeBSD.org>
AuthorDate: 2021-03-05 14:01:30 +0000
Commit:     Kyle Evans <kevans at FreeBSD.org>
CommitDate: 2021-03-13 07:19:43 +0000

    relnotes/13.0: add note about jail(8) cpuset behavior
    
    Attaching processes will now largely retain their cpu masks, which is a
    fairly large and notable change from previous releases.
    
    Reviewed by:    me_igalic.co
    Approved by:    gjb (implicit)
    Differential Revision:  https://reviews.freebsd.org/D29081
---
 website/content/en/releases/13.0R/relnotes.adoc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/website/content/en/releases/13.0R/relnotes.adoc b/website/content/en/releases/13.0R/relnotes.adoc
index 4fcd232378..ee893c643c 100644
--- a/website/content/en/releases/13.0R/relnotes.adoc
+++ b/website/content/en/releases/13.0R/relnotes.adoc
@@ -157,6 +157,10 @@ This section covers changes to kernel configurations, system tuning, and system
 [[kernel-general]]
 === General Kernel Changes
 
+Processes that attach to a {{< manpage "jail" "8" >}} will now completely rebase their {{< manpage "cpuset" "1" >}} onto the jail's cpuset.
+Notably, if a process had been assigned a numbered cpuset then it will be assigned a new numbered set that is the combination of CPUs
+allowed to the attaching process and the jail.
+Processes belonging to the superuser will implicitly widen their CPU mask as needed if they share no CPUs in common with the jail.
 
 [[drivers]]
 == Devices and Drivers