Remove protector pages

kernel/cpu/i386/paging.c

@@ -211,28 +211,6 @@ void unmap_pages(void* start_virt,uint32_t num_pages) {
   }
 }
 
-char make_protector(int page) {
-  int table=page>>10;
-  if (is_page_present(page)) return 0;
-  page=page&0x3FF;
-  smap_page_tables[table+1]=(smap[table]&0xFFFFFC00)|0x3;
-  uint32_t page_val=smap[(1024+(1024*table))+page];
-  page_val=page_val&(~0x6);
-  page_val=page_val|0x800;
-  smap[(1024+(1024*table))+page]=page_val;
-  return 1;
-}
-
-char is_in_protector(void* addr) {
-  int page=((uint32_t)addr)>>12;
-  if (is_page_present(page)) return 0;
-  int table=page>>10;
-  page=page&0x3FF;
-  smap_page_tables[table+1]=(smap[table]&0xFFFFFC00)|0x3;
-  return smap[(1024+(1024*table))+page]&0x800;
-  return 1;
-}
-
 void paging_init() {
   for (uint32_t i=0;i<NUM_KERN_FRAMES;i++) {
     kern_page_tables[i]=(i<<12)|0x3;

kernel/cpu/i386/tasking_helpers_c.c

@@ -17,13 +17,11 @@ void setup_kstack(Thread* thread,uint32_t param1,uint32_t param2,char kmode,void
     uint32_t top_idx=(1024*(kstack_num+1));
     thread->kernel_esp=((uint32_t)(&kstacks[top_idx-7]));
     thread->kernel_esp_top=thread->kernel_esp;
-    kstacks[top_idx-3]=(uint32_t)task_init;
     uint32_t* user_stack=(uint32_t*)(((uint32_t)alloc_pages(2))+0x2000);
-    int buffer_pg_num=(((uint32_t)user_stack)-0x2000)>>12;
-    make_protector(buffer_pg_num);
     user_stack-=2;
     user_stack[0]=param1;
     user_stack[1]=param2;
+    kstacks[top_idx-3]=(uint32_t)task_init;
     kstacks[top_idx-2]=(uint32_t)user_stack;
     kstacks[top_idx-1]=(uint32_t)eip;
   }

kernel/cpu/paging.h

@@ -15,8 +15,6 @@ void load_address_space(void* cr3);
 void* virt_to_phys(void* virt_addr);
 void* find_free_pages(int num_pages);
 void load_smap(void* cr3);
-char make_protector(int page);
-char is_in_protector(void* addr);
 void* get_cr3();
 
 #endif