nothing much

initcode.S

 # Initial process execs /init.
+# This code runs in user space.
 
 #include "syscall.h"
 #include "traps.h"

proc.c

@@ -283,7 +283,7 @@ scheduler(void)
       proc = p;
       switchuvm(p);
       p->state = RUNNING;
-      swtch(&cpu->scheduler, proc->context);
+      swtch(&cpu->scheduler, p->context);
       switchkvm();
 
       // Process is done running for now.

vm.c

@@ -171,7 +171,7 @@ switchuvm(struct proc *p)
   ltr(SEG_TSS << 3);
   if(p->pgdir == 0)
     panic("switchuvm: no pgdir");
-  lcr3(v2p(p->pgdir));  // switch to new address space
+  lcr3(v2p(p->pgdir));  // switch to process's address space
   popcli();
 }