we don't need CR0_WP

vm.c

@@ -375,9 +375,7 @@ vminit(void)
 
   lcr3(PADDR(kpgdir));
   cr0 = rcr0();
-  // cr0 |= CR0_PE|CR0_PG|CR0_AM|CR0_WP|CR0_NE|CR0_TS|CR0_EM|CR0_MP;
-  // cr0 &= ~(CR0_TS|CR0_EM);
-  cr0 |= CR0_PG | CR0_WP;
+  cr0 |= CR0_PG;
   lcr0(cr0);
 }