git: 2abf24b3698c - main - amd64: re-enable la57

The branch main has been updated by kib:

URL: https://cgit.FreeBSD.org/src/commit/?id=2abf24b3698c08c9fc906580fd5be67be65c9feb

commit 2abf24b3698c08c9fc906580fd5be67be65c9feb
Author:     Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2025-08-16 00:37:18 +0000
Commit:     Konstantin Belousov <kib@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");