xv6

commit 8c8b748a2f0f10188c1a58c529239fff3a3b1b01
parent b5dcebdbebcac9beb7efd6b27aeb390293dc8334
Author: rsc <rsc>
Date:   Thu, 27 Sep 2007 19:35:25 +0000

now spllo is okay

Diffstat:
M
trap.c
 | 
10
++--------

1 file changed, 2 insertions(+), 8 deletions(-)
diff --git a/trap.c b/trap.c
@@ -83,14 +83,8 @@ trap(struct trapframe *tf)
             cp->pid, cp->name, tf->trapno, tf->err, cpu(), tf->eip);
     cp->killed = 1;
   }
-  
-  // Undo splhi but do not enable interrupts.
-  // If you change this to spllo() you can get a 
-  // triple fault by just typing too fast at the prompt.
-  // An interrupt stops us right here, and when that
-  // interrupt tries to return, somehow the segment
-  // registers are all invalid.
-  --cpus[cpu()].nsplhi;
+
+  spllo();
 
   // Force process exit if it has been killed and is in user space.
   // (If it is still executing in the kernel, let it keep running