diff --git a/Makefile b/Makefile
index 9edf71d..f3c31ae 100644
--- a/Makefile
+++ b/Makefile
@@ -14,7 +14,7 @@ user_object_files := $(wildcard user/*.o)
 qemu_opts := -cdrom $(iso) -smp 4 -serial mon:stdio
 features := use_apic
 
-#link_user = 1
+link_user = 1
 
 ifdef link_user
 features := $(features) link_user_program
diff --git a/src/arch/x86_64/paging/mod.rs b/src/arch/x86_64/paging/mod.rs
index 428eb01..e003fdc 100644
--- a/src/arch/x86_64/paging/mod.rs
+++ b/src/arch/x86_64/paging/mod.rs
@@ -103,15 +103,12 @@ impl ActivePageTable {
         }
     }
 
-    pub fn with<F>(&mut self,
-                   table: &mut InactivePageTable,
-                   temporary_page: &mut temporary_page::TemporaryPage, // new
-                   f: F)
-        where F: FnOnce(&mut Mapper)
+    pub fn with(&mut self, table: &mut InactivePageTable, f: impl FnOnce(&mut Mapper))
     {
         use x86_64::instructions::tlb;
         use x86_64::registers::control_regs;
 
+        let mut temporary_page = TemporaryPage::new(Page::of_addr(0xcafebabe));
         {
             let backup = Frame::of_addr(
                 control_regs::cr3().0 as usize);
@@ -155,10 +152,8 @@ pub struct InactivePageTable {
 }
 
 impl InactivePageTable {
-    pub fn new(frame: Frame,
-               active_table: &mut ActivePageTable,
-               temporary_page: &mut TemporaryPage)
-               -> InactivePageTable {
+    pub fn new(frame: Frame, active_table: &mut ActivePageTable) -> InactivePageTable {
+        let mut temporary_page = TemporaryPage::new(Page::of_addr(0xcafebabe));
         {
             let table = temporary_page.map_table_frame(frame.clone(),
                 active_table);
diff --git a/src/memory/mod.rs b/src/memory/mod.rs
index a08ea89..5ca7bda 100644
--- a/src/memory/mod.rs
+++ b/src/memory/mod.rs
@@ -88,13 +88,11 @@ pub fn init(boot_info: &BootInformation) -> MemoryController {
 
 pub fn remap_the_kernel(boot_info: &BootInformation) -> (ActivePageTable, Stack)
 {
-    let mut temporary_page = TemporaryPage::new(Page::of_addr(0xcafebabe));
-
     let mut active_table = unsafe { ActivePageTable::new() };
     let mut new_table =
-        InactivePageTable::new(alloc_frame(), &mut active_table, &mut temporary_page);
+        InactivePageTable::new(alloc_frame(), &mut active_table);
 
-    active_table.with(&mut new_table, &mut temporary_page, |mapper| {
+    active_table.with(&mut new_table, |mapper| {
         let elf_sections_tag = boot_info.elf_sections_tag()
             .expect("Memory map tag required");
 
@@ -165,9 +163,8 @@ impl MemoryController {
         stack_allocator.alloc_stack(active_table, size_in_pages)
     }
     pub fn new_page_table(&mut self) -> InactivePageTable {
-        let mut temporary_page = TemporaryPage::new(Page::of_addr(0xcafebabe));
         let frame = alloc_frame();
-        let page_table = InactivePageTable::new(frame, &mut self.active_table, &mut temporary_page);
+        let page_table = InactivePageTable::new(frame, &mut self.active_table);
         page_table
     }
     pub fn map_page_identity(&mut self, addr: usize) {
diff --git a/src/process/mod.rs b/src/process/mod.rs
index 80e5f70..532a1ea 100644
--- a/src/process/mod.rs
+++ b/src/process/mod.rs
@@ -43,7 +43,7 @@ pub fn init(mc: &mut MemoryController) {
         let idleproc = Process::new("idle", idle_thread, mc);
         #[cfg(feature = "link_user_program")]
         let forktest = Process::new_user(_binary_user_forktest_start as usize,
-                                         _binary_user_forktest_end as usize);
+                                         _binary_user_forktest_end as usize, mc);
         processor.add(initproc);
         processor.add(idleproc);
         processor
diff --git a/src/process/process.rs b/src/process/process.rs
index ae5539d..eb43de8 100644
--- a/src/process/process.rs
+++ b/src/process/process.rs
@@ -50,15 +50,38 @@ impl Process {
         }
     }
 
-    pub fn new_user(begin: usize, end: usize) -> Self {
+    pub fn new_user(begin: usize, end: usize, mc: &mut MemoryController) -> Self {
         let slice = unsafe{ slice::from_raw_parts(begin as *const u8, end - begin) };
         let elf = ElfFile::new(slice).expect("failed to read elf");
         for program_header in elf.program_iter() {
             println!("{:?}", program_header);
         }
-//        for section in elf.section_iter() {
-//            println!("{:?}", section);
-//        }
+        for section in elf.section_iter() {
+            println!("{:?}", section);
+        }
         unimplemented!();
     }
+}
+
+use memory::{MemorySet, MemoryArea};
+
+fn new_memory_set_from_elf(elf: ElfFile, mc: &mut MemoryController) -> MemorySet {
+    use xmas_elf::program::ProgramHeader;
+
+    let mut set = MemorySet::new(mc);
+    for ph in elf.program_iter() {
+        match ph {
+            ProgramHeader::Ph32(ph) => unimplemented!(),
+            ProgramHeader::Ph64(ph) => {
+                set.push(MemoryArea {
+                    start_addr: ph.virtual_addr as usize,
+                    end_addr: (ph.virtual_addr + ph.mem_size) as usize,
+                    flags: ph.flags.0,  // TODO: handle it
+                    name: "",
+                    mapped: false,
+                });
+            },
+        }
+    }
+    set
 }
\ No newline at end of file