diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index 34d302d1a07f..9e2d9efbcdd1 100644
--- a/arch/um/Kconfig
+++ b/arch/um/Kconfig
@@ -21,6 +21,7 @@ config UML
 	select HAVE_GCC_PLUGINS
 	select SET_FS
 	select TTY # Needed for line.c
+	select MODULE_REL_CRCS if MODVERSIONS
 
 config MMU
 	bool
@@ -80,17 +81,6 @@ config STATIC_LINK
 	  NOTE: This option is incompatible with some networking features which
 	  depend on features that require being dynamically loaded (like NSS).
 
-config LD_SCRIPT_STATIC
-	bool
-	default y
-	depends on STATIC_LINK
-
-config LD_SCRIPT_DYN
-	bool
-	default y
-	depends on !LD_SCRIPT_STATIC
-	select MODULE_REL_CRCS if MODVERSIONS
-
 config HOSTFS
 	tristate "Host filesystem"
 	help
diff --git a/arch/um/Makefile b/arch/um/Makefile
index 1cea46ff9bb7..48fbbc3a0032 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -95,14 +95,30 @@ KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/include \
 KERNEL_DEFINES = $(strip -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
 			 -Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES))
 KBUILD_CFLAGS += $(KERNEL_DEFINES)
+LDFLAGS_vmlinux += -r
 
-PHONY += linux
-
+INSTALL_PATH=$(objtree)/tools/um
 all: linux
-
-linux: vmlinux
-	@echo '  LINK $@'
-	$(Q)ln -f $< $@
+pre-2nd: linux.o
+	@echo "  INSTALL $(INSTALL_PATH)/lib/$<"
+	@mkdir -p $(INSTALL_PATH)/lib/
+	@cp $< $(INSTALL_PATH)/lib/
+
+PHONY += linux.o
+
+linux: pre-2nd
+	$(Q)$(MAKE) -C $(srctree)/tools/um
+	$(Q)cp $(objtree)/tools/um/uml/linux $(objtree)/
+	$(Q)cp $(objtree)/linux $(objtree)/vmlinux
+
+linux.o: vmlinux
+#revert vmlinux file from vmlinux.a
+ifneq ("$(wildcard vmlinux.a)","")
+	$(Q)cp vmlinux.a vmlinux
+endif
+	$(Q)cp vmlinux vmlinux.a
+	@echo "  LINK    $@"
+	$(Q)$(OBJCOPY) -R .eh_frame $< $@
 
 define archhelp
   echo '* linux		- Binary kernel image (./linux) - for backward'
@@ -144,5 +160,6 @@ MRPROPER_FILES += arch/$(SUBARCH)/include/generated
 archclean:
 	@find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
 		-o -name '*.gcov' \) -type f -print | xargs rm -f
+	$(Q)$(MAKE) -C $(srctree)/tools/um clean
 
 export HEADER_ARCH SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS DEV_NULL_PATH
diff --git a/arch/um/include/asm/common.lds.S b/arch/um/include/asm/common.lds.S
deleted file mode 100644
index eca6c452a41b..000000000000
--- a/arch/um/include/asm/common.lds.S
+++ /dev/null
@@ -1,99 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#include <asm-generic/vmlinux.lds.h>
-
-  .fini      : { *(.fini)    } =0x9090
-  _etext = .;
-  PROVIDE (etext = .);
-
-  . = ALIGN(4096);
-  _sdata = .;
-  PROVIDE (sdata = .);
-
-  RO_DATA(4096)
-
-  .unprotected : { *(.unprotected) }
-  . = ALIGN(4096);
-  PROVIDE (_unprotected_end = .);
-
-  . = ALIGN(4096);
-  EXCEPTION_TABLE(0)
-
-  BUG_TABLE
-
-  .uml.setup.init : {
-	__uml_setup_start = .;
-	*(.uml.setup.init)
-	__uml_setup_end = .;
-  }
-	
-  .uml.help.init : {
-	__uml_help_start = .;
-	*(.uml.help.init)
-	__uml_help_end = .;
-  }
-	
-  .uml.postsetup.init : {
-	__uml_postsetup_start = .;
-	*(.uml.postsetup.init)
-	__uml_postsetup_end = .;
-  }
-	
-  .init.setup : {
-	INIT_SETUP(0)
-  }
-
-  PERCPU_SECTION(32)
-	
-  .initcall.init : {
-	INIT_CALLS
-  }
-
-  .con_initcall.init : {
-	CON_INITCALL
-  }
-
-  .exitcall : {
-	__exitcall_begin = .;
-	*(.exitcall.exit)
-	__exitcall_end = .;
-  }
-
-  .uml.exitcall : {
-	__uml_exitcall_begin = .;
-	*(.uml.exitcall.exit)
-	__uml_exitcall_end = .;
-  }
-
-  . = ALIGN(4);
-  .altinstructions : {
-	__alt_instructions = .;
-	*(.altinstructions)
-	__alt_instructions_end = .;
-  }
-  .altinstr_replacement : { *(.altinstr_replacement) }
-  /* .exit.text is discard at runtime, not link time, to deal with references
-     from .altinstructions and .eh_frame */
-  .exit.text : { EXIT_TEXT }
-  .exit.data : { *(.exit.data) }
-
-  .preinit_array : {
-	__preinit_array_start = .;
-	*(.preinit_array)
-	__preinit_array_end = .;
-  }
-  .init_array : {
-	__init_array_start = .;
-	*(.init_array)
-	__init_array_end = .;
-  }
-  .fini_array : {
-	__fini_array_start = .;
-	*(.fini_array)
-	__fini_array_end = .;
-  }
-
-   . = ALIGN(4096);
-  .init.ramfs : {
-	INIT_RAM_FS
-  }
-
diff --git a/arch/um/kernel/dyn.lds.S b/arch/um/kernel/dyn.lds.S
deleted file mode 100644
index dacbfabf66d8..000000000000
--- a/arch/um/kernel/dyn.lds.S
+++ /dev/null
@@ -1,171 +0,0 @@
-#include <asm/vmlinux.lds.h>
-#include <asm/page.h>
-
-OUTPUT_FORMAT(ELF_FORMAT)
-OUTPUT_ARCH(ELF_ARCH)
-ENTRY(_start)
-jiffies = jiffies_64;
-
-SECTIONS
-{
-  PROVIDE (__executable_start = START);
-  . = START + SIZEOF_HEADERS;
-  .interp         : { *(.interp) }
-  __binary_start = .;
-  . = ALIGN(4096);		/* Init code and data */
-  _text = .;
-  INIT_TEXT_SECTION(PAGE_SIZE)
-
-  . = ALIGN(PAGE_SIZE);
-
-  /* Read-only sections, merged into text segment: */
-  .hash           : { *(.hash) }
-  .gnu.hash       : { *(.gnu.hash) }
-  .dynsym         : { *(.dynsym) }
-  .dynstr         : { *(.dynstr) }
-  .gnu.version    : { *(.gnu.version) }
-  .gnu.version_d  : { *(.gnu.version_d) }
-  .gnu.version_r  : { *(.gnu.version_r) }
-  .rel.init       : { *(.rel.init) }
-  .rela.init      : { *(.rela.init) }
-  .rel.text       : { *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) }
-  .rela.text      : { *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) }
-  .rel.fini       : { *(.rel.fini) }
-  .rela.fini      : { *(.rela.fini) }
-  .rel.rodata     : { *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) }
-  .rela.rodata    : { *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) }
-  .rel.data       : { *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*) }
-  .rela.data      : { *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) }
-  .rel.tdata	  : { *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*) }
-  .rela.tdata	  : { *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) }
-  .rel.tbss	  : { *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*) }
-  .rela.tbss	  : { *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) }
-  .rel.ctors      : { *(.rel.ctors) }
-  .rela.ctors     : { *(.rela.ctors) }
-  .rel.dtors      : { *(.rel.dtors) }
-  .rela.dtors     : { *(.rela.dtors) }
-  .rel.got        : { *(.rel.got) }
-  .rela.got       : { *(.rela.got) }
-  .rel.bss        : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }
-  .rela.bss       : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
-  .rel.plt : {
-	*(.rel.plt)
-	PROVIDE_HIDDEN(__rel_iplt_start = .);
-	*(.rel.iplt)
-	PROVIDE_HIDDEN(__rel_iplt_end = .);
-  }
-  .rela.plt : {
-	*(.rela.plt)
-	PROVIDE_HIDDEN(__rela_iplt_start = .);
-	*(.rela.iplt)
-	PROVIDE_HIDDEN(__rela_iplt_end = .);
-  }
-  .init           : {
-    KEEP (*(.init))
-  } =0x90909090
-  .plt            : { *(.plt) }
-  .text           : {
-    _stext = .;
-    TEXT_TEXT
-    SCHED_TEXT
-    CPUIDLE_TEXT
-    LOCK_TEXT
-    IRQENTRY_TEXT
-    SOFTIRQENTRY_TEXT
-    *(.fixup)
-    *(.stub .text.* .gnu.linkonce.t.*)
-    /* .gnu.warning sections are handled specially by elf32.em.  */
-    *(.gnu.warning)
-
-    . = ALIGN(PAGE_SIZE);
-  } =0x90909090
-  . = ALIGN(PAGE_SIZE);
-  .syscall_stub : {
-	__syscall_stub_start = .;
-	*(.__syscall_stub*)
-	__syscall_stub_end = .;
-  }
-  .fini           : {
-    KEEP (*(.fini))
-  } =0x90909090
-
-  .kstrtab : { *(.kstrtab) }
-
-  #include <asm/common.lds.S>
-
-  __init_begin = .;
-  init.data : { INIT_DATA }
-  __init_end = .;
-
-  /* Ensure the __preinit_array_start label is properly aligned.  We
-     could instead move the label definition inside the section, but
-     the linker would then create the section even if it turns out to
-     be empty, which isn't pretty.  */
-  . = ALIGN(32 / 8);
-  .preinit_array     : { *(.preinit_array) }
-  .init_array     : { *(.init_array) }
-  .fini_array     : { *(.fini_array) }
-  .data           : {
-    INIT_TASK_DATA(KERNEL_STACK_SIZE)
-    . = ALIGN(KERNEL_STACK_SIZE);
-    *(.data..init_irqstack)
-    DATA_DATA
-    *(.data.* .gnu.linkonce.d.*)
-    SORT(CONSTRUCTORS)
-  }
-  .data1          : { *(.data1) }
-  .tdata	  : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
-  .tbss		  : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
-  .eh_frame       : { KEEP (*(.eh_frame)) }
-  .gcc_except_table   : { *(.gcc_except_table) }
-  .dynamic        : { *(.dynamic) }
-  .ctors          : {
-    /* gcc uses crtbegin.o to find the start of
-       the constructors, so we make sure it is
-       first.  Because this is a wildcard, it
-       doesn't matter if the user does not
-       actually link against crtbegin.o; the
-       linker won't look for a file to match a
-       wildcard.  The wildcard also means that it
-       doesn't matter which directory crtbegin.o
-       is in.  */
-    KEEP (*crtbegin.o(.ctors))
-    /* We don't want to include the .ctor section from
-       from the crtend.o file until after the sorted ctors.
-       The .ctor section from the crtend file contains the
-       end of ctors marker and it must be last */
-    KEEP (*(EXCLUDE_FILE (*crtend.o ) .ctors))
-    KEEP (*(SORT(.ctors.*)))
-    KEEP (*(.ctors))
-  }
-  .dtors          : {
-    KEEP (*crtbegin.o(.dtors))
-    KEEP (*(EXCLUDE_FILE (*crtend.o ) .dtors))
-    KEEP (*(SORT(.dtors.*)))
-    KEEP (*(.dtors))
-  }
-  .jcr            : { KEEP (*(.jcr)) }
-  .got            : { *(.got.plt) *(.got) }
-  _edata = .;
-  PROVIDE (edata = .);
-  .bss            : {
-   __bss_start = .;
-   *(.dynbss)
-   *(.bss .bss.* .gnu.linkonce.b.*)
-   *(COMMON)
-   /* Align here to ensure that the .bss section occupies space up to
-      _end.  Align after .bss to ensure correct alignment even if the
-      .bss section disappears because there are no input sections.  */
-   . = ALIGN(32 / 8);
-  . = ALIGN(32 / 8);
-  }
-   __bss_stop = .;
-  _end = .;
-  PROVIDE (end = .);
-
-  STABS_DEBUG
-  DWARF_DEBUG
-  ELF_DETAILS
-
-  DISCARDS
-}
diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S
deleted file mode 100644
index 45d957d7004c..000000000000
--- a/arch/um/kernel/uml.lds.S
+++ /dev/null
@@ -1,115 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#include <asm/vmlinux.lds.h>
-#include <asm/page.h>
-
-OUTPUT_FORMAT(ELF_FORMAT)
-OUTPUT_ARCH(ELF_ARCH)
-ENTRY(_start)
-jiffies = jiffies_64;
-
-SECTIONS
-{
-  /* This must contain the right address - not quite the default ELF one.*/
-  PROVIDE (__executable_start = START);
-  /* Static binaries stick stuff here, like the sigreturn trampoline,
-   * invisibly to objdump.  So, just make __binary_start equal to the very
-   * beginning of the executable, and if there are unmapped pages after this,
-   * they are forever unusable.
-   */
-  __binary_start = START;
-
-  . = START + SIZEOF_HEADERS;
-  . = ALIGN(PAGE_SIZE);
-
-  _text = .;
-  INIT_TEXT_SECTION(0)
-
-  .text      :
-  {
-    _stext = .;
-    TEXT_TEXT
-    SCHED_TEXT
-    CPUIDLE_TEXT
-    LOCK_TEXT
-    IRQENTRY_TEXT
-    SOFTIRQENTRY_TEXT
-    *(.fixup)
-    /* .gnu.warning sections are handled specially by elf32.em.  */
-    *(.gnu.warning)
-    *(.gnu.linkonce.t*)
-  }
-
-  . = ALIGN(PAGE_SIZE);
-  .syscall_stub : {
-	__syscall_stub_start = .;
-	*(.__syscall_stub*)
-	__syscall_stub_end = .;
-  }
-
-  /*
-   * These are needed even in a static link, even if they wind up being empty.
-   * Newer glibc needs these __rel{,a}_iplt_{start,end} symbols.
-   */
-  .rel.plt : {
-	*(.rel.plt)
-	PROVIDE_HIDDEN(__rel_iplt_start = .);
-	*(.rel.iplt)
-	PROVIDE_HIDDEN(__rel_iplt_end = .);
-  }
-  .rela.plt : {
-	*(.rela.plt)
-	PROVIDE_HIDDEN(__rela_iplt_start = .);
-	*(.rela.iplt)
-	PROVIDE_HIDDEN(__rela_iplt_end = .);
-  }
-
-  #include <asm/common.lds.S>
-
-  __init_begin = .;
-  init.data : { INIT_DATA }
-  __init_end = .;
-
-  .data    :
-  {
-    INIT_TASK_DATA(KERNEL_STACK_SIZE)
-    . = ALIGN(KERNEL_STACK_SIZE);
-    *(.data..init_irqstack)
-    DATA_DATA
-    *(.gnu.linkonce.d*)
-    CONSTRUCTORS
-  }
-  .data1   : { *(.data1) }
-  .ctors         :
-  {
-    *(.ctors)
-  }
-  .dtors         :
-  {
-    *(.dtors)
-  }
-
-  .got           : { *(.got.plt) *(.got) }
-  .dynamic       : { *(.dynamic) }
-  .tdata	  : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
-  .tbss		  : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
-  /* We want the small data sections together, so single-instruction offsets
-     can access them all, and initialized data all before uninitialized, so
-     we can shorten the on-disk segment size.  */
-  .sdata     : { *(.sdata) }
-  _edata  =  .;
-  PROVIDE (edata = .);
-  . = ALIGN(PAGE_SIZE);
-  __bss_start = .;
-  PROVIDE(_bss_start = .);
-  SBSS(0)
-  BSS(0)
-   __bss_stop = .;
-  _end = .;
-  PROVIDE (end = .);
-
-  STABS_DEBUG
-  DWARF_DEBUG
-  ELF_DETAILS
-
-  DISCARDS
-}
diff --git a/arch/um/kernel/vmlinux.lds.S b/arch/um/kernel/vmlinux.lds.S
index 16e49bfa2b42..a673f51defda 100644
--- a/arch/um/kernel/vmlinux.lds.S
+++ b/arch/um/kernel/vmlinux.lds.S
@@ -1,8 +1,88 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <asm/vmlinux.lds.h>
+#include <asm/thread_info.h>
+#include <asm/page.h>
+#include <asm/thread_info.h>
+#include <asm/cache.h>
+#include <linux/export.h>
 
-KERNEL_STACK_SIZE = 4096 * (1 << CONFIG_KERNEL_STACK_ORDER);
+OUTPUT_FORMAT(ELF_FORMAT)
+jiffies = jiffies_64;
 
-#ifdef CONFIG_LD_SCRIPT_STATIC
-#include "uml.lds.S"
-#else
-#include "dyn.lds.S"
-#endif
+
+SECTIONS
+{
+	__init_begin = . ;
+	HEAD_TEXT_SECTION
+	INIT_TEXT_SECTION(PAGE_SIZE)
+	INIT_DATA_SECTION(16)
+	PERCPU_SECTION(L1_CACHE_BYTES)
+	__init_end = . ;
+
+	_stext = . ;
+	_text = . ;
+	.text : ALIGN(THREAD_SIZE)
+	{
+		__binary_start = . ;
+		TEXT_TEXT
+		SCHED_TEXT
+		LOCK_TEXT
+		CPUIDLE_TEXT
+		IRQENTRY_TEXT
+		SOFTIRQENTRY_TEXT
+	}
+	_etext = . ;
+
+	.syscall_stub : ALIGN(PAGE_SIZE)
+	{
+		__syscall_stub_start = .;
+		*(.__syscall_stub*)
+		__syscall_stub_end = .;
+	}
+
+	_sdata = . ;
+	RO_DATA(PAGE_SIZE)
+	RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
+	.data : ALIGN(THREAD_SIZE)  { }
+
+	EXCEPTION_TABLE(16)
+
+	.uml.init_irqstack : ALIGN(THREAD_SIZE) {
+		*(.data..init_irqstack)
+	}
+
+	.uml.setup.init : ALIGN(8) {
+		__uml_setup_start = .;
+		*(.uml.setup.init)
+		__uml_setup_end = .;
+	}
+
+	.uml.help.init : ALIGN(8)  {
+		__uml_help_start = .;
+		*(.uml.help.init)
+		__uml_help_end = .;
+	}
+
+	.uml.postsetup.init : ALIGN(8) {
+		__uml_postsetup_start = .;
+		*(.uml.postsetup.init)
+		__uml_postsetup_end = .;
+	}
+
+	.uml.exitcall : ALIGN(8) {
+		__uml_exitcall_begin = .;
+		*(.uml.exitcall.exit)
+		__uml_exitcall_end = .;
+	}
+	_edata = . ;
+
+	BSS_SECTION(0, 0, 0)
+	_end = . ;
+
+	STABS_DEBUG
+
+	DWARF_DEBUG
+	ELF_DETAILS
+
+	DISCARDS
+}
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 6eded325c837..9bc0e212657c 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -102,36 +102,18 @@ vmlinux_link()
 		strip_debug=-Wl,--strip-debug
 	fi
 
-	if [ "${SRCARCH}" != "um" ]; then
-		objects="--whole-archive			\
-			${KBUILD_VMLINUX_OBJS}			\
-			--no-whole-archive			\
-			--start-group				\
-			${KBUILD_VMLINUX_LIBS}			\
-			--end-group				\
-			${@}"
-
-		${LD} ${KBUILD_LDFLAGS} ${LDFLAGS_vmlinux}	\
-			${strip_debug#-Wl,}			\
-			-o ${output}				\
-			-T ${lds} ${objects}
-	else
-		objects="-Wl,--whole-archive			\
-			${KBUILD_VMLINUX_OBJS}			\
-			-Wl,--no-whole-archive			\
-			-Wl,--start-group			\
-			${KBUILD_VMLINUX_LIBS}			\
-			-Wl,--end-group				\
-			${@}"
-
-		${CC} ${CFLAGS_vmlinux}				\
-			${strip_debug}				\
-			-o ${output}				\
-			-Wl,-T,${lds}				\
-			${objects}				\
-			-lutil -lrt -lpthread
-		rm -f linux
-	fi
+	objects="--whole-archive			\
+		${KBUILD_VMLINUX_OBJS}			\
+		--no-whole-archive			\
+		--start-group				\
+		${KBUILD_VMLINUX_LIBS}			\
+		--end-group				\
+		${@}"
+
+	${LD} ${KBUILD_LDFLAGS} ${LDFLAGS_vmlinux}	\
+		${strip_debug#-Wl,}			\
+		-o ${output}				\
+		-T ${lds} ${objects}
 }
 
 # generate .BTF typeinfo from DWARF debuginfo
diff --git a/tools/um/Makefile b/tools/um/Makefile
new file mode 100644
index 000000000000..2b4e6b63355b
--- /dev/null
+++ b/tools/um/Makefile
@@ -0,0 +1,74 @@
+# Do not use make's built-in rules
+# (this improves performance and avoids hard-to-debug behaviour);
+# also do not print "Entering directory..." messages from make
+.SUFFIXES:
+MAKEFLAGS += -r --no-print-directory
+
+ifneq ($(silent),1)
+  ifneq ($(V),1)
+	QUIET_AUTOCONF       = @echo '  AUTOCONF '$@;
+	Q = @
+  endif
+endif
+
+PREFIX   := /usr
+
+srctree := $(patsubst %/,%,$(dir $(shell pwd)))
+srctree := $(patsubst %/,%,$(dir $(srctree)))
+export srctree
+
+-include ../scripts/Makefile.include
+
+# OUTPUT fixup should be *after* include ../scripts/Makefile.include
+ifneq ($(OUTPUT),)
+  OUTPUT := $(OUTPUT)/tools/um/
+else
+  OUTPUT := $(CURDIR)/
+endif
+export OUTPUT
+export objtree := $(OUTPUT)/../..
+
+export CFLAGS += -I$(OUTPUT)/include -Iinclude -Wall -g -O2 -Wextra -fPIC \
+	 -Wno-unused-parameter \
+	 -Wno-missing-field-initializers -fno-strict-aliasing
+
+-include Targets
+
+TARGETS := $(progs-y:%=$(OUTPUT)%)
+TARGETS += $(libs-y:%=$(OUTPUT)%)
+all: $(TARGETS)
+
+# rule to build linux.o
+$(objtree)/linux.o:
+	$(Q)echo ""
+	$(Q)echo ""
+	$(Q)echo "==> $@ isn't found; please make ARCH=um"
+	$(Q)echo ""
+	$(Q)echo ""
+	$(Q)exit 1
+
+$(OUTPUT)lib/linux.o: $(objtree)/linux.o
+	$(Q)cp $(objtree)/linux.o $(OUTPUT)lib/linux.o
+
+$(OUTPUT)liblinux.a: $(OUTPUT)lib/linux.o $(OUTPUT)uml/liblinux-in.o
+	$(QUIET_AR)$(AR) -rc $@ $^
+
+# rule to link programs
+$(OUTPUT)%: $(OUTPUT)%-in.o $(OUTPUT)liblinux.a
+	$(QUIET_LINK)$(CC) $(LDFLAGS) $(LDFLAGS_$(notdir $*)-y) -o $@ $^ $(LDLIBS) $(LDLIBS_$(notdir $*)-y)
+
+# rule to build objects
+$(OUTPUT)%-in.o: FORCE
+	$(Q)$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=$(patsubst %/,%,$(dir $*)) obj=$(notdir $*)
+
+RM := rm -f
+clean:
+	$(call QUIET_CLEAN, objects)find $(OUTPUT) -name '*.o' -delete -o -name '\.*.cmd'\
+	 -delete -o -name '\.*.d' -delete
+	$(call QUIET_CLEAN, liblinux.a)$(RM) $(OUTPUT)/liblinux.a
+	$(call QUIET_CLEAN, $(TARGETS))$(RM) $(TARGETS)
+
+FORCE: ;
+.PHONY: all clean FORCE
+.IGNORE: clean
+.NOTPARALLEL : lib/linux.o
diff --git a/tools/um/Targets b/tools/um/Targets
new file mode 100644
index 000000000000..cfe1d3c3c6ff
--- /dev/null
+++ b/tools/um/Targets
@@ -0,0 +1,4 @@
+progs-y += uml/linux
+LDLIBS_linux-y := -lrt -lpthread -lutil
+LDFLAGS_linux-y := -no-pie -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
+LDFLAGS_linux-$(CONFIG_STATIC_LINK) += -static
diff --git a/tools/um/uml/Build b/tools/um/uml/Build
new file mode 100644
index 000000000000..e69de29bb2d1
