The branch main has been updated by emaste:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=76887e84be975698b14699d7d0dfb157d73e9990

commit 76887e84be975698b14699d7d0dfb157d73e9990
Author:     Ed Maste <[email protected]>
AuthorDate: 2023-05-02 20:57:12 +0000
Commit:     Ed Maste <[email protected]>
CommitDate: 2023-05-08 18:25:15 +0000

    cpuset: increase userland maximum size to 1024
    
    Hardware with more than 256 CPU cores is now available and will become
    increasingly common.  Bump CPU_MAXSIZE (used for userland cpuset_t
    sizing) to 1024 to define the ABI for FreeBSD 14.
    
    PR:             269572, 271213 [exp-run]
    Reviewed by:    mjg, jhb
    Relnotes:       yes
    Sponsored by:   The FreeBSD Foundation
    Differential Revision: https://reviews.freebsd.org/D39941
---
 sys/sys/_cpuset.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/sys/_cpuset.h b/sys/sys/_cpuset.h
index b75ee595da3c..676f9855f384 100644
--- a/sys/sys/_cpuset.h
+++ b/sys/sys/_cpuset.h
@@ -40,7 +40,7 @@
 #define        CPU_SETSIZE     MAXCPU
 #endif
 
-#define        CPU_MAXSIZE     256
+#define        CPU_MAXSIZE     1024
 
 #ifndef        CPU_SETSIZE
 #define        CPU_SETSIZE     CPU_MAXSIZE

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