The branch main has been updated by kib:
URL:
https://cgit.FreeBSD.org/src/commit/?id=2abf24b3698c08c9fc906580fd5be67be65c9feb
commit 2abf24b3698c08c9fc906580fd5be67be65c9feb
Author: Konstantin Belousov <k...@freebsd.org>
AuthorDate: 2025-08-16 00:37:18 +0000
Commit: Konstantin Belousov <k...@freebsd.org>
CommitDate: 2025-08-17 08:09:24 +0000
amd64: re-enable la57
It benefits KVA. For userspace la57 is disabled by default for quite
some time, to avoid compat issues.
Reviewed by: alc, imp, olce
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D51929
---
sys/amd64/amd64/pmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c
index 243a6625bece..9867bb7fdbac 100644
--- a/sys/amd64/amd64/pmap.c
+++ b/sys/amd64/amd64/pmap.c
@@ -424,7 +424,7 @@ static int __read_frequently pg_ps_enabled = 1;
SYSCTL_INT(_vm_pmap, OID_AUTO, pg_ps_enabled, CTLFLAG_RDTUN | CTLFLAG_NOFETCH,
&pg_ps_enabled, 0, "Are large page mappings enabled?");
-int __read_frequently la57 = 0;
+int __read_frequently la57 = 1;
SYSCTL_INT(_vm_pmap, OID_AUTO, la57, CTLFLAG_RDTUN | CTLFLAG_NOFETCH,
&la57, 0,
"5-level paging for host is enabled");
