diff --git a/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h b/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h
index ea8e8d42b14e..493300157a70 100644
--- a/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h
+++ b/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h
@@ -1,191 +1,195 @@
 /*
  * Override settings that were generated in jemalloc_defs.h as necessary.
  */
 
 #undef JEMALLOC_OVERRIDE_VALLOC
 
 #ifndef MALLOC_PRODUCTION
 #define	MALLOC_PRODUCTION
 #endif
 
 #undef JEMALLOC_DSS
 
 #undef JEMALLOC_BACKGROUND_THREAD
 
 /*
  * The following are architecture-dependent, so conditionally define them for
  * each supported architecture.
  */
 #undef JEMALLOC_TLS_MODEL
 #undef LG_PAGE
 #undef LG_VADDR
 #undef LG_SIZEOF_PTR
 #undef LG_SIZEOF_INT
 #undef LG_SIZEOF_LONG
 #undef LG_SIZEOF_INTMAX_T
 
 #ifdef __i386__
 #  define LG_VADDR		32
 #  define LG_SIZEOF_PTR		2
 #  define JEMALLOC_TLS_MODEL	__attribute__((tls_model("initial-exec")))
 #endif
 #ifdef __ia64__
 #  define LG_VADDR		64
 #  define LG_SIZEOF_PTR		3
 #endif
 #ifdef __sparc64__
 #  define LG_VADDR		64
 #  define LG_SIZEOF_PTR		3
 #  define JEMALLOC_TLS_MODEL	__attribute__((tls_model("initial-exec")))
 #endif
 #ifdef __amd64__
+#ifdef _USE_LG_VADDR_WIDE
+#  define LG_VADDR		64
+#else
 #  define LG_VADDR		48
+#endif
 #  define LG_SIZEOF_PTR		3
 #  define JEMALLOC_TLS_MODEL	__attribute__((tls_model("initial-exec")))
 #endif
 #ifdef __arm__
 #  define LG_VADDR		32
 #  define LG_SIZEOF_PTR		2
 #endif
 #ifdef __aarch64__
 #  define LG_VADDR		48
 #  define LG_SIZEOF_PTR		3
 #endif
 #ifdef __mips__
 #ifdef __mips_n64
 #  define LG_VADDR		64
 #  define LG_SIZEOF_PTR		3
 #else
 #  define LG_VADDR		32
 #  define LG_SIZEOF_PTR		2
 #endif
 #endif
 #ifdef __powerpc64__
 #  define LG_VADDR		64
 #  define LG_SIZEOF_PTR		3
 #  define JEMALLOC_TLS_MODEL	__attribute__((tls_model("initial-exec")))
 #elif defined(__powerpc__)
 #  define LG_VADDR		32
 #  define LG_SIZEOF_PTR		2
 #  define JEMALLOC_TLS_MODEL	__attribute__((tls_model("initial-exec")))
 #endif
 #ifdef __riscv
 #  define LG_VADDR		48
 #  define LG_SIZEOF_PTR		3
 #endif
 
 #if LG_VADDR > 32
 #  define JEMALLOC_RETAIN
 #endif
 
 #ifndef JEMALLOC_TLS_MODEL
 #  define JEMALLOC_TLS_MODEL	/* Default. */
 #endif
 
 #define	LG_PAGE			PAGE_SHIFT
 #define	LG_SIZEOF_INT		2
 #define	LG_SIZEOF_LONG		LG_SIZEOF_PTR
 #define	LG_SIZEOF_INTMAX_T	3
 
 #undef CPU_SPINWAIT
 #include <machine/cpu.h>
 #include <machine/cpufunc.h>
 #define	CPU_SPINWAIT		cpu_spinwait()
 
 /* Disable lazy-lock machinery, mangle isthreaded, and adjust its type. */
 #undef JEMALLOC_LAZY_LOCK
 extern int __isthreaded;
 #define	isthreaded		((bool)__isthreaded)
 
 /* Mangle. */
 #undef je_malloc
 #undef je_calloc
 #undef je_posix_memalign
 #undef je_aligned_alloc
 #undef je_realloc
 #undef je_free
 #undef je_malloc_usable_size
 #undef je_mallocx
 #undef je_rallocx
 #undef je_xallocx
 #undef je_sallocx
 #undef je_dallocx
 #undef je_sdallocx
 #undef je_nallocx
 #undef je_mallctl
 #undef je_mallctlnametomib
 #undef je_mallctlbymib
 #undef je_malloc_stats_print
 #undef je_allocm
 #undef je_rallocm
 #undef je_sallocm
 #undef je_dallocm
 #undef je_nallocm
 #define	je_malloc		__malloc
 #define	je_calloc		__calloc
 #define	je_posix_memalign	__posix_memalign
 #define	je_aligned_alloc	__aligned_alloc
 #define	je_realloc		__realloc
 #define	je_free			__free
 #define	je_malloc_usable_size	__malloc_usable_size
 #define	je_mallocx		__mallocx
 #define	je_rallocx		__rallocx
 #define	je_xallocx		__xallocx
 #define	je_sallocx		__sallocx
 #define	je_dallocx		__dallocx
 #define	je_sdallocx		__sdallocx
 #define	je_nallocx		__nallocx
 #define	je_mallctl		__mallctl
 #define	je_mallctlnametomib	__mallctlnametomib
 #define	je_mallctlbymib		__mallctlbymib
 #define	je_malloc_stats_print	__malloc_stats_print
 #define	je_allocm		__allocm
 #define	je_rallocm		__rallocm
 #define	je_sallocm		__sallocm
 #define	je_dallocm		__dallocm
 #define	je_nallocm		__nallocm
 #define	open			_open
 #define	read			_read
 #define	write			_write
 #define	close			_close
 #define	pthread_join		_pthread_join
 #define	pthread_once		_pthread_once
 #define	pthread_self		_pthread_self
 #define	pthread_equal		_pthread_equal
 #define	pthread_mutex_lock	_pthread_mutex_lock
 #define	pthread_mutex_trylock	_pthread_mutex_trylock
 #define	pthread_mutex_unlock	_pthread_mutex_unlock
 #define	pthread_cond_init	_pthread_cond_init
 #define	pthread_cond_wait	_pthread_cond_wait
 #define	pthread_cond_timedwait	_pthread_cond_timedwait
 #define	pthread_cond_signal	_pthread_cond_signal
 
 #ifdef JEMALLOC_C_
 /*
  * Define 'weak' symbols so that an application can have its own versions
  * of malloc, calloc, realloc, free, et al.
  */
 __weak_reference(__malloc, malloc);
 __weak_reference(__calloc, calloc);
 __weak_reference(__posix_memalign, posix_memalign);
 __weak_reference(__aligned_alloc, aligned_alloc);
 __weak_reference(__realloc, realloc);
 __weak_reference(__free, free);
 __weak_reference(__malloc_usable_size, malloc_usable_size);
 __weak_reference(__mallocx, mallocx);
 __weak_reference(__rallocx, rallocx);
 __weak_reference(__xallocx, xallocx);
 __weak_reference(__sallocx, sallocx);
 __weak_reference(__dallocx, dallocx);
 __weak_reference(__sdallocx, sdallocx);
 __weak_reference(__nallocx, nallocx);
 __weak_reference(__mallctl, mallctl);
 __weak_reference(__mallctlnametomib, mallctlnametomib);
 __weak_reference(__mallctlbymib, mallctlbymib);
 __weak_reference(__malloc_stats_print, malloc_stats_print);
 __weak_reference(__allocm, allocm);
 __weak_reference(__rallocm, rallocm);
 __weak_reference(__sallocm, sallocm);
 __weak_reference(__dallocm, dallocm);
 __weak_reference(__nallocm, nallocm);
 #endif
diff --git a/lib/libc/stdlib/malloc/jemalloc/Makefile.inc b/lib/libc/stdlib/malloc/jemalloc/Makefile.inc
index 1ba7725fe8a8..d916d69f471f 100644
--- a/lib/libc/stdlib/malloc/jemalloc/Makefile.inc
+++ b/lib/libc/stdlib/malloc/jemalloc/Makefile.inc
@@ -1,44 +1,47 @@
 JEMALLOCSRCS:= jemalloc.c arena.c background_thread.c base.c bin.c bitmap.c \
 	ckh.c ctl.c div.c extent.c extent_dss.c extent_mmap.c hash.c hook.c \
 	large.c log.c malloc_io.c mutex.c mutex_pool.c nstime.c pages.c \
 	prng.c prof.c rtree.c safety_check.c sc.c stats.c sz.c tcache.c \
 	test_hooks.c ticker.c tsd.c witness.c
 
 CFLAGS+=-I${SRCTOP}/contrib/jemalloc/include
+.if ${MK_JEMALLOC_LG_VADDR_WIDE} != no
+CFLAGS+=-D_USE_LG_VADDR_WIDE
+.endif
 
 .for src in ${JEMALLOCSRCS}
 MISRCS+=jemalloc_${src}
 CLEANFILES+=jemalloc_${src}
 jemalloc_${src}: ${SRCTOP}/contrib/jemalloc/src/${src} .NOMETA
 	ln -sf ${.ALLSRC} ${.TARGET}
 .endfor
 
 MAN+=jemalloc.3
 CLEANFILES+=jemalloc.3
 jemalloc.3: ${SRCTOP}/contrib/jemalloc/doc/jemalloc.3 .NOMETA
 	ln -sf ${.ALLSRC} ${.TARGET}
 
 MLINKS+= \
 	jemalloc.3 malloc.3 \
 	jemalloc.3 calloc.3 \
 	jemalloc.3 posix_memalign.3 \
 	jemalloc.3 aligned_alloc.3 \
 	jemalloc.3 realloc.3 \
 	jemalloc.3 free.3 \
 	jemalloc.3 malloc_usable_size.3 \
 	jemalloc.3 malloc_stats_print.3 \
 	jemalloc.3 mallctl.3 \
 	jemalloc.3 mallctlnametomib.3 \
 	jemalloc.3 mallctlbymib.3 \
 	jemalloc.3 mallocx.3 \
 	jemalloc.3 rallocx.3 \
 	jemalloc.3 xallocx.3 \
 	jemalloc.3 sallocx.3 \
 	jemalloc.3 dallocx.3 \
 	jemalloc.3 sdallocx.3 \
 	jemalloc.3 nallocx.3 \
 	jemalloc.3 malloc.conf.5
 
 .if ${MK_MALLOC_PRODUCTION} != "no" || defined(MALLOC_PRODUCTION)
 CFLAGS+=	-DMALLOC_PRODUCTION
 .endif
diff --git a/share/mk/src.opts.mk b/share/mk/src.opts.mk
index 600daa9ef61b..774b6fffd3df 100644
--- a/share/mk/src.opts.mk
+++ b/share/mk/src.opts.mk
@@ -1,518 +1,519 @@
 #
 # Option file for FreeBSD /usr/src builds, at least the userland and boot loader
 # portions of the tree. These options generally chose what parts of the tree to
 # include or omit and are FreeBSD source tree specific.
 #
 # Users define WITH_FOO and WITHOUT_FOO on the command line or in /etc/src.conf
 # and /etc/make.conf files. These translate in the build system to MK_FOO={yes,no}
 # with sensible (usually) defaults.
 #
 # Makefiles must include bsd.opts.mk after defining specific MK_FOO options that
 # are applicable for that Makefile (typically there are none, but sometimes there
 # are exceptions). Recursive makes usually add MK_FOO=no for options that they wish
 # to omit from that make.
 #
 # Makefiles must include bsd.mkopt.mk before they test the value of any MK_FOO
 # variable.
 #
 # Makefiles may also assume that this file is included by src.opts.mk should it
 # need variables defined there prior to the end of the Makefile where
 # bsd.{subdir,lib.bin}.mk is traditionally included.
 #
 # The old-style YES_FOO and NO_FOO are being phased out. No new instances of them
 # should be added. Old instances should be removed since they were just to
 # bridge the gap between FreeBSD 4 and FreeBSD 5.
 #
 # Makefiles should never test WITH_FOO or WITHOUT_FOO directly (although an
 # exception is made for _WITHOUT_SRCONF which turns off this mechanism
 # completely inside bsd.*.mk files).
 #
 
 .if !target(__<src.opts.mk>__)
 __<src.opts.mk>__:
 
 .include <bsd.own.mk>
 
 #
 # Define MK_* variables (which are either "yes" or "no") for users
 # to set via WITH_*/WITHOUT_* in /etc/src.conf and override in the
 # make(1) environment.
 # These should be tested with `== "no"' or `!= "no"' in makefiles.
 # The NO_* variables should only be set by makefiles for variables
 # that haven't been converted over.
 #
 
 # These options are used by the src builds. Those listed in
 # __DEFAULT_YES_OPTIONS default to 'yes' and will build unless turned
 # off.  __DEFAULT_NO_OPTIONS will default to 'no' and won't build
 # unless turned on. Any options listed in 'BROKEN_OPTIONS' will be
 # hard-wired to 'no'.  "Broken" here means not working or
 # not-appropriate and/or not supported. It doesn't imply something is
 # wrong with the code. There's not a single good word for this, so
 # BROKEN was selected as the least imperfect one considered at the
 # time. Options are added to BROKEN_OPTIONS list on a per-arch basis.
 # At this time, there's no provision for mutually incompatible options.
 # Options listed in 'REQUIRED_OPTIONS' will be hard-wired to 'yes'; this
 # is intended as a transitional measure while options are in the process
 # of being removed.
 
 __DEFAULT_YES_OPTIONS = \
     ACCT \
     ACPI \
     APM \
     AT \
     AUDIT \
     AUTHPF \
     AUTOFS \
     BHYVE \
     BLACKLIST \
     BLUETOOTH \
     BOOT \
     BOOTPARAMD \
     BOOTPD \
     BSD_CPIO \
     BSDINSTALL \
     BSNMP \
     BZIP2 \
     CALENDAR \
     CAROOT \
     CCD \
     CDDL \
     CLANG \
     CLANG_BOOTSTRAP \
     CLEAN \
     CPP \
     CROSS_COMPILER \
     CRYPT \
     CUSE \
     CXGBETOOL \
     DIALOG \
     DICT \
     DMAGENT \
     DTRACE \
     DYNAMICROOT \
     EE \
     EFI \
     ELFTOOLCHAIN_BOOTSTRAP \
     EXAMPLES \
     FILE \
     FINGER \
     FLOPPY \
     FORTH \
     FP_LIBC \
     FREEBSD_UPDATE \
     FTP \
     GAMES \
     GH_BC \
     GNU_DIFF \
     GOOGLETEST \
     GPIO \
     HAST \
     HTML \
     HYPERV \
     ICONV \
     INET \
     INET6 \
     INETD \
     IPFILTER \
     IPFW \
     ISCSI \
     JAIL \
+    JEMALLOC_LG_VADDR_WIDE \
     KDUMP \
     KVM \
     LDNS \
     LDNS_UTILS \
     LEGACY_CONSOLE \
     LLD \
     LLD_BOOTSTRAP \
     LLD_IS_LD \
     LLVM_COV \
     LLVM_CXXFILT \
     LOADER_GELI \
     LOADER_KBOOT \
     LOADER_LUA \
     LOADER_OFW \
     LOADER_PXEBOOT \
     LOADER_UBOOT \
     LOCALES \
     LOCATE \
     LPR \
     LS_COLORS \
     MACHDEP_OPTIMIZATIONS \
     MAIL \
     MAILWRAPPER \
     MAKE \
     MLX5TOOL \
     NETCAT \
     NETGRAPH \
     NETLINK \
     NETLINK_SUPPORT \
     NLS_CATALOGS \
     NS_CACHING \
     NTP \
     NUAGEINIT \
     OFED \
     OPENSSL \
     PAM \
     PF \
     PKGBOOTSTRAP \
     PMC \
     PPP \
     PTHREADS_ASSERTIONS \
     QUOTAS \
     RADIUS_SUPPORT \
     RBOOTD \
     REPRODUCIBLE_BUILD \
     RESCUE \
     ROUTED \
     SENDMAIL \
     SERVICESDB \
     SETUID_LOGIN \
     SHAREDOCS \
     SOURCELESS \
     SOURCELESS_HOST \
     SOURCELESS_UCODE \
     STATS \
     SYSCONS \
     SYSTEM_COMPILER \
     SYSTEM_LINKER \
     TALK \
     TCP_WRAPPERS \
     TCSH \
     TELNET \
     TEXTPROC \
     TFTP \
     UNBOUND \
     USB \
     UTMPX \
     VI \
     VT \
     WIRELESS \
     WPA_SUPPLICANT_EAPOL \
     ZFS \
     ZFS_TESTS \
     LOADER_ZFS \
     ZONEINFO
 
 __DEFAULT_NO_OPTIONS = \
     BEARSSL \
     BHYVE_SNAPSHOT \
     CLANG_EXTRAS \
     CLANG_FORMAT \
     DETECT_TZ_CHANGES \
     DISK_IMAGE_TOOLS_BOOTSTRAP \
     DTRACE_ASAN \
     DTRACE_TESTS \
     EXPERIMENTAL \
     HESIOD \
     LOADER_BIOS_TEXTONLY \
     LOADER_VERBOSE \
     LOADER_VERIEXEC_PASS_MANIFEST \
     LLVM_ASSERTIONS \
     LLVM_BINUTILS \
     LLVM_FULL_DEBUGINFO \
     MALLOC_PRODUCTION \
     OFED_EXTRA \
     OPENLDAP \
     RPCBIND_WARMSTART_SUPPORT \
     SORT_THREADS \
     ZONEINFO_LEAPSECONDS_SUPPORT \
 
 __REQUIRED_OPTIONS = \
     CAPSICUM \
     CASPER
 
 # LEFT/RIGHT. Left options which default to "yes" unless their corresponding
 # RIGHT option is disabled.
 __DEFAULT_DEPENDENT_OPTIONS= \
 	CLANG_FULL/CLANG \
 	LLVM_TARGET_ALL/CLANG \
 	LOADER_VERIEXEC/BEARSSL \
 	LOADER_EFI_SECUREBOOT/LOADER_VERIEXEC \
 	LOADER_VERIEXEC_VECTX/LOADER_VERIEXEC \
 	VERIEXEC/BEARSSL \
 
 # MK_*_SUPPORT options which default to "yes" unless their corresponding
 # MK_* variable is set to "no".
 #
 .for var in \
     BLACKLIST \
     BZIP2 \
     INET \
     INET6 \
     KERBEROS \
     KVM \
     NETGRAPH \
     PAM \
     TESTS \
     WIRELESS
 __DEFAULT_DEPENDENT_OPTIONS+= ${var}_SUPPORT/${var}
 .endfor
 
 #
 # Default behaviour of some options depends on the architecture.  Unfortunately
 # this means that we have to test TARGET_ARCH (the buildworld case) as well
 # as MACHINE_ARCH (the non-buildworld case).  Normally TARGET_ARCH is not
 # used at all in bsd.*.mk, but we have to make an exception here if we want
 # to allow defaults for some things like clang to vary by target architecture.
 # Additional, per-target behavior should be rarely added only after much
 # gnashing of teeth and grinding of gears.
 #
 .if defined(TARGET_ARCH)
 __T=${TARGET_ARCH}
 .else
 __T=${MACHINE_ARCH}
 .endif
 
 # All supported backends for LLVM_TARGET_XXX
 __LLVM_TARGETS= \
 		aarch64 \
 		arm \
 		powerpc \
 		riscv \
 		x86
 __LLVM_TARGET_FILT=	C/(amd64|i386)/x86/:C/powerpc.*/powerpc/:C/armv[67]/arm/:C/riscv.*/riscv/
 .for __llt in ${__LLVM_TARGETS}
 # Default enable the given TARGET's LLVM_TARGET support
 .if ${__T:${__LLVM_TARGET_FILT}} == ${__llt}
 __DEFAULT_YES_OPTIONS+=	LLVM_TARGET_${__llt:${__LLVM_TARGET_FILT}:tu}
 # aarch64 needs arm for -m32 support.
 .elif ${__T} == "aarch64" && ${__llt:Marm*} != ""
 __DEFAULT_DEPENDENT_OPTIONS+=	LLVM_TARGET_ARM/LLVM_TARGET_AARCH64
 # Default the rest of the LLVM_TARGETs to the value of MK_LLVM_TARGET_ALL.
 .else
 __DEFAULT_DEPENDENT_OPTIONS+=	LLVM_TARGET_${__llt:${__LLVM_TARGET_FILT}:tu}/LLVM_TARGET_ALL
 .endif
 .endfor
 
 __DEFAULT_NO_OPTIONS+=LLVM_TARGET_BPF LLVM_TARGET_MIPS
 
 .include <bsd.compiler.mk>
 
 .if ${__T} == "i386" || ${__T} == "amd64"
 __DEFAULT_NO_OPTIONS += FDT
 .else
 __DEFAULT_YES_OPTIONS += FDT
 .endif
 
 .if ${__T:Marm*} == "" && ${__T:Mriscv64*} == ""
 __DEFAULT_YES_OPTIONS+=LLDB
 .else
 __DEFAULT_NO_OPTIONS+=LLDB
 .endif
 # LIB32 is not supported on all 64-bit architectures.
 .if (${__T} == "amd64" || ${__T:Maarch64*} != "" || ${__T} == "powerpc64")
 __DEFAULT_YES_OPTIONS+=LIB32
 .else
 BROKEN_OPTIONS+=LIB32
 .endif
 # EFI doesn't exist on powerpc (well, officially) and doesn't work on i386
 .if ${__T:Mpowerpc*} || ${__T} == "i386"
 BROKEN_OPTIONS+=EFI
 .endif
 # OFW is only for powerpc, exclude others
 .if ${__T:Mpowerpc*} == ""
 BROKEN_OPTIONS+=LOADER_OFW
 .endif
 # KBOOT is only for powerpc64 (powerpc64le broken) amd64 and aarch64
 .if ${__T} != "powerpc64" && ${__T} != "amd64" && ${__T} != "aarch64"
 BROKEN_OPTIONS+=LOADER_KBOOT
 .endif
 # UBOOT is only for arm, and big-endian powerpc
 .if (${__T:Marm*} == "" && ${__T:Mpowerpc*} == "") || ${__T} == "powerpc64le"
 BROKEN_OPTIONS+=LOADER_UBOOT
 .endif
 # GELI and Lua in loader currently cause boot failures on powerpc.
 # Further debugging is required -- probably they are just broken on big
 # endian systems generically (they jump to null pointers or try to read
 # crazy high addresses, which is typical of endianness problems).
 .if ${__T:Mpowerpc*}
 BROKEN_OPTIONS+=LOADER_GELI LOADER_LUA
 .endif
 
 # Kernel TLS is enabled by default on amd64, aarch64 and powerpc64*
 .if ${__T} == "aarch64" || ${__T} == "amd64" || ${__T:Mpowerpc64*} != ""
 __DEFAULT_YES_OPTIONS+=OPENSSL_KTLS
 .else
 __DEFAULT_NO_OPTIONS+=OPENSSL_KTLS
 .endif
 
 .if ${__T} != "aarch64" && ${__T} != "amd64" && ${__T} != "i386" && \
     ${__T:Mpowerpc64*} == ""
 BROKEN_OPTIONS+=CXGBETOOL
 BROKEN_OPTIONS+=MLX5TOOL
 .endif
 
 .if ${__T} != "amd64" && ${__T} != "i386" && ${__T} != "aarch64"
 BROKEN_OPTIONS+=HYPERV
 .endif
 
 .if ${__T} == "aarch64" || ${__T} == "amd64" || ${__T} == "i386" || \
     ${__T:Mpowerpc64*} != "" || ${__T:Mriscv64*} != ""
 __DEFAULT_YES_OPTIONS+=OPENMP
 .else
 __DEFAULT_NO_OPTIONS+=OPENMP
 .endif
 
 # Broken on 32-bit arm, kernel module compile errors
 .if ${__T:Marm*} != ""
 BROKEN_OPTIONS+= OFED
 .endif
 
 # MK_host_egacy is set by local.sys.mk so is valid here
 .if ${MACHINE} == "host" && ${MK_host_egacy} == "yes"
 # we cannot expect tests to work
 BROKEN_OPTIONS+= TESTS
 .endif
 
 .-include <site.src.opts.mk>
 
 .include <bsd.mkopt.mk>
 
 #
 # Force some options off if their dependencies are off.
 # Order is somewhat important.
 #
 .if ${MK_CAPSICUM} == "no"
 MK_CASPER:=	no
 .endif
 
 .if ${MK_SOURCELESS} == "no"
 MK_SOURCELESS_HOST:=	no
 MK_SOURCELESS_UCODE:= no
 .endif
 
 .if ${MK_CDDL} == "no"
 MK_CTF:=	no
 MK_DTRACE:=	no
 MK_LOADER_ZFS:=	no
 MK_ZFS:=	no
 .endif
 
 .if ${MK_CRYPT} == "no"
 MK_OPENSSL:=	no
 MK_OPENSSH:=	no
 MK_KERBEROS:=	no
 MK_KERBEROS_SUPPORT:=	no
 .endif
 
 .if ${MK_DIALOG} == "no"
 MK_BSDINSTALL:=	no
 .endif
 
 .if ${MK_DTRACE} == "no"
 MK_CTF:=	no
 .endif
 
 .if ${MK_MAIL} == "no"
 MK_MAILWRAPPER:= no
 MK_SENDMAIL:=	no
 MK_DMAGENT:=	no
 .endif
 
 .if ${MK_NETGRAPH} == "no"
 MK_BLUETOOTH:=	no
 .endif
 
 .if ${MK_NLS} == "no"
 MK_NLS_CATALOGS:= no
 .endif
 
 .if ${MK_OPENSSL} == "no"
 MK_DMAGENT:=	no
 MK_OPENSSH:=	no
 MK_OPENSSL_KTLS:=	no
 MK_KERBEROS:=	no
 MK_KERBEROS_SUPPORT:=	no
 MK_LDNS:=	no
 MK_PKGBOOTSTRAP:=	no
 MK_LOADER_ZFS:=	no
 MK_ZFS:=	no
 .endif
 
 .if ${MK_LDNS} == "no"
 MK_LDNS_UTILS:=	no
 MK_UNBOUND:= no
 .endif
 
 .if ${MK_PF} == "no"
 MK_AUTHPF:=	no
 .endif
 
 .if ${MK_OFED} == "no"
 MK_OFED_EXTRA:=	no
 .endif
 
 .if ${MK_TESTS} == "no"
 MK_DTRACE_TESTS:= no
 MK_ZFS_TESTS:= no
 .endif
 
 .if ${MK_ZFS} == "no"
 MK_ZFS_TESTS:=	no
 .endif
 
 .if ${MK_TESTS_SUPPORT} == "no"
 MK_GOOGLETEST:=	no
 .endif
 
 .if ${MK_ZONEINFO} == "no"
 MK_ZONEINFO_LEAPSECONDS_SUPPORT:= no
 .endif
 
 .if ${MK_CROSS_COMPILER} == "no"
 MK_CLANG_BOOTSTRAP:= no
 MK_ELFTOOLCHAIN_BOOTSTRAP:= no
 MK_LLD_BOOTSTRAP:= no
 .endif
 
 .if ${MK_TOOLCHAIN} == "no"
 MK_CLANG:=	no
 MK_LLD:=	no
 MK_LLDB:=	no
 MK_LLVM_BINUTILS:=	no
 .endif
 
 .if ${MK_CLANG} == "no"
 MK_CLANG_EXTRAS:= no
 MK_CLANG_FORMAT:= no
 MK_CLANG_FULL:= no
 MK_LLVM_COV:= no
 .endif
 
 .if ${MK_ASAN} == "yes"
 # In order to get sensible backtraces from ASAN we have to install
 # llvm-symbolizer as /usr/bin/addr2line instead of the elftoolchain version.
 MK_LLVM_BINUTILS:=	yes
 .endif
 
 .if ${MK_LLVM_BINUTILS} == "yes"
 # MK_LLVM_CXXFILT is a subset of MK_LLVM_BINUTILS and should therefore be
 # enabled if MK_LLVM_BINUTILS is set.
 MK_LLVM_CXXFILT:=	yes
 .endif
 
 .if ${MK_LOADER_VERIEXEC} == "no"
 MK_LOADER_VERIEXEC_PASS_MANIFEST := no
 .endif
 
 #
 # MK_* options whose default value depends on another option.
 #
 .for vv in \
     GSSAPI/KERBEROS \
     MAN_UTILS/MAN
 .if defined(WITH_${vv:H})
 MK_${vv:H}:=	yes
 .elif defined(WITHOUT_${vv:H})
 MK_${vv:H}:=	no
 .else
 MK_${vv:H}:=	${MK_${vv:T}}
 .endif
 .endfor
 
 #
 # Set defaults for the MK_*_SUPPORT variables.
 #
 
 .endif #  !target(__<src.opts.mk>__)
diff --git a/tools/build/options/WITHOUT_JEMALLOC_LG_VADDR_WIDE b/tools/build/options/WITHOUT_JEMALLOC_LG_VADDR_WIDE
new file mode 100644
index 000000000000..9efc4022e9cf
--- /dev/null
+++ b/tools/build/options/WITHOUT_JEMALLOC_LG_VADDR_WIDE
@@ -0,0 +1,5 @@
+Disallow programs to use more than 48 address bits on amd64.
+Incompatible with LA57 mode.
+Enabling this option might result in a slight reduction in memory
+consumption for jemalloc metadata, but also requires disabling LA57
+(if hardware supports it).