Index: head/share/man/man4/linux.4
===================================================================
--- head/share/man/man4/linux.4
+++ head/share/man/man4/linux.4
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd November 13, 2019
+.Dd December 16, 2019
 .Dt LINUX 4
 .Os
 .Sh NAME
@@ -95,6 +95,10 @@
 .Xr loader 8
 tunables:
 .Bl -tag -width indent
+.It Va compat.linux.emul_path
+Path to the Linux run-time environment.
+Defaults to
+.Pa /compat/linux .
 .It Va compat.linux.osname
 Linux kernel operating system name.
 .It Va compat.linux.osrelease
Index: head/sys/amd64/linux/linux_sysvec.c
===================================================================
--- head/sys/amd64/linux/linux_sysvec.c
+++ head/sys/amd64/linux/linux_sysvec.c
@@ -836,7 +836,7 @@
 	.brand		= ELFOSABI_LINUX,
 	.machine	= EM_X86_64,
 	.compat_3_brand	= "Linux",
-	.emul_path	= "/compat/linux",
+	.emul_path	= linux_emul_path,
 	.interp_path	= "/lib64/ld-linux-x86-64.so.2",
 	.sysvec		= &elf_linux_sysvec,
 	.interp_newpath	= NULL,
@@ -848,7 +848,7 @@
 	.brand		= ELFOSABI_LINUX,
 	.machine	= EM_X86_64,
 	.compat_3_brand	= "Linux",
-	.emul_path	= "/compat/linux",
+	.emul_path	= linux_emul_path,
 	.interp_path	= "/lib64/ld-linux.so.2",
 	.sysvec		= &elf_linux_sysvec,
 	.interp_newpath	= NULL,
@@ -860,7 +860,7 @@
 	.brand		= ELFOSABI_LINUX,
 	.machine	= EM_X86_64,
 	.compat_3_brand	= "Linux",
-	.emul_path	= "/compat/linux",
+	.emul_path	= linux_emul_path,
 	.interp_path	= "/lib/ld-musl-x86_64.so.1",
 	.sysvec		= &elf_linux_sysvec,
 	.interp_newpath	= NULL,
Index: head/sys/amd64/linux32/linux32_sysvec.c
===================================================================
--- head/sys/amd64/linux32/linux32_sysvec.c
+++ head/sys/amd64/linux32/linux32_sysvec.c
@@ -992,7 +992,7 @@
 	.brand		= ELFOSABI_LINUX,
 	.machine	= EM_386,
 	.compat_3_brand	= "Linux",
-	.emul_path	= "/compat/linux",
+	.emul_path	= linux_emul_path,
 	.interp_path	= "/lib/ld-linux.so.1",
 	.sysvec		= &elf_linux_sysvec,
 	.interp_newpath	= NULL,
@@ -1004,7 +1004,7 @@
 	.brand		= ELFOSABI_LINUX,
 	.machine	= EM_386,
 	.compat_3_brand	= "Linux",
-	.emul_path	= "/compat/linux",
+	.emul_path	= linux_emul_path,
 	.interp_path	= "/lib/ld-linux.so.2",
 	.sysvec		= &elf_linux_sysvec,
 	.interp_newpath	= NULL,
@@ -1016,7 +1016,7 @@
 	.brand		= ELFOSABI_LINUX,
 	.machine	= EM_386,
 	.compat_3_brand	= "Linux",
-	.emul_path	= "/compat/linux",
+	.emul_path	= linux_emul_path,
 	.interp_path	= "/lib/ld-musl-i386.so.1",
 	.sysvec		= &elf_linux_sysvec,
 	.interp_newpath	= NULL,
Index: head/sys/arm64/linux/linux_sysvec.c
===================================================================
--- head/sys/arm64/linux/linux_sysvec.c
+++ head/sys/arm64/linux/linux_sysvec.c
@@ -54,6 +54,7 @@
 #include <compat/linux/linux_ioctl.h>
 #include <compat/linux/linux_mib.h>
 #include <compat/linux/linux_misc.h>
+#include <compat/linux/linux_util.h>
 #include <compat/linux/linux_vdso.h>
 
 MODULE_VERSION(linux64elf, 1);
@@ -494,7 +495,7 @@
 	.brand		= ELFOSABI_LINUX,
 	.machine	= EM_AARCH64,
 	.compat_3_brand	= "Linux",
-	.emul_path	= "/compat/linux",
+	.emul_path	= linux_emul_path,
 	.interp_path	= "/lib64/ld-linux-x86-64.so.2",
 	.sysvec		= &elf_linux_sysvec,
 	.interp_newpath	= NULL,
Index: head/sys/compat/linux/linux_util.h
===================================================================
--- head/sys/compat/linux/linux_util.h
+++ head/sys/compat/linux/linux_util.h
@@ -50,7 +50,7 @@
 MALLOC_DECLARE(M_FUTEX);
 MALLOC_DECLARE(M_FUTEX_WP);
 
-extern const char linux_emul_path[];
+extern char linux_emul_path[];
 
 int linux_emul_convpath(struct thread *, const char *, enum uio_seg, char **, int, int);
 
Index: head/sys/compat/linux/linux_util.c
===================================================================
--- head/sys/compat/linux/linux_util.c
+++ head/sys/compat/linux/linux_util.c
@@ -46,11 +46,13 @@
 #include <sys/proc.h>
 #include <sys/sdt.h>
 #include <sys/syscallsubr.h>
+#include <sys/sysctl.h>
 #include <sys/systm.h>
 #include <sys/vnode.h>
 
 #include <machine/stdarg.h>
 
+#include <compat/linux/linux_mib.h>
 #include <compat/linux/linux_util.h>
 
 MALLOC_DEFINE(M_LINUX, "linux", "Linux mode structures");
@@ -58,7 +60,11 @@
 MALLOC_DEFINE(M_FUTEX, "futex", "Linux futexes");
 MALLOC_DEFINE(M_FUTEX_WP, "futex wp", "Linux futex waiting proc");
 
-const char      linux_emul_path[] = "/compat/linux";
+char linux_emul_path[MAXPATHLEN] = "/compat/linux";
+
+SYSCTL_STRING(_compat_linux, OID_AUTO, emul_path, CTLFLAG_RWTUN,
+    linux_emul_path, sizeof(linux_emul_path),
+    "Linux runtime environment path");
 
 /*
  * Search an alternate path before passing pathname arguments on to
Index: head/sys/i386/linux/linux_sysvec.c
===================================================================
--- head/sys/i386/linux/linux_sysvec.c
+++ head/sys/i386/linux/linux_sysvec.c
@@ -974,7 +974,7 @@
 	.brand		= ELFOSABI_LINUX,
 	.machine	= EM_386,
 	.compat_3_brand	= "Linux",
-	.emul_path	= "/compat/linux",
+	.emul_path	= linux_emul_path,
 	.interp_path	= "/lib/ld-linux.so.1",
 	.sysvec		= &elf_linux_sysvec,
 	.interp_newpath	= NULL,
@@ -986,7 +986,7 @@
 	.brand		= ELFOSABI_LINUX,
 	.machine	= EM_386,
 	.compat_3_brand	= "Linux",
-	.emul_path	= "/compat/linux",
+	.emul_path	= linux_emul_path,
 	.interp_path	= "/lib/ld-linux.so.2",
 	.sysvec		= &elf_linux_sysvec,
 	.interp_newpath	= NULL,
@@ -998,7 +998,7 @@
 	.brand		= ELFOSABI_LINUX,
 	.machine	= EM_386,
 	.compat_3_brand	= "Linux",
-	.emul_path	= "/compat/linux",
+	.emul_path	= linux_emul_path,
 	.interp_path	= "/lib/ld-musl-i386.so.1",
 	.sysvec		= &elf_linux_sysvec,
 	.interp_newpath	= NULL,