i think my cmpxchg use was wrong in acquire

nesting cli/sti: release shouldn't always enable interrupts
separate setup of lapic from starting of other cpus, so cpu() works earlier
flag to disable locking in console output
make locks work even when curproc==0
(still crashes in clock interrupt)

1 files changed, 8 insertions, 3 deletions

diff --git a/mp.c b/mp.c
index 4258aba..068d036 100644
--- a/mp.c
+++ b/mp.c
@@ -325,8 +325,6 @@ mp_init()
   struct MPCTB *mpctb;
   struct MPPE *proc;
   struct MPBE *bus;
-  int c;
-  extern int main();
   int i;
 
   ncpu = 0;
@@ -386,13 +384,20 @@ mp_init()
   
   lapic_init(bcpu-cpus);
   cprintf("ncpu: %d boot %d\n", ncpu, bcpu-cpus);
+}
 
+void
+mp_startthem()
+{
   extern uint8_t _binary_bootother_start[], _binary_bootother_size[];
+  extern int main();
+  int c;
+
   memmove((void *) APBOOTCODE,_binary_bootother_start, 
 	  (uint32_t) _binary_bootother_size);
 
   for(c = 0; c < ncpu; c++){
-    if (cpus+c == bcpu) continue;
+    if (c == cpu()) continue;
     cprintf ("starting processor %d\n", c);
     *(unsigned *)(APBOOTCODE-4) = (unsigned) (cpus[c].mpstack) + MPSTACK; // tell it what to use for %esp
     *(unsigned *)(APBOOTCODE-8) = (unsigned)&main; // tell it where to jump to