Re: HEADS-UP: await/asleep removal imminent

[Peter Wemm]

Soren Schmidt wrote:
> It seems Peter Wemm wrote:
> > 
> > Soren, can you retest a buildworld with the currently committed kernel
> > with no other changes?  Let us see if the forward_signal() stuff is the
> > culprit, and if not, try adding just the i386/i386/machdep.c patch to HLT
> > the idle CPU.  (if *that* makes a difference then we have got trouble!)
> 
> It seems that the HLT thing is exactly the patch that makes it work!
> 
> So we have trouble, I said that all along .5 :)

So, the difference between -current working for you or not is this:

+++ machdep.c   2001/01/18 13:44:48
@@ -1005,6 +1005,10 @@
 void
 cpu_idle(void)
 {
+#ifdef SMP
+       /* first candidate for an interrupt */
+       lapic.tpr = 0;
+#endif
 #ifndef SMP
        if (cpu_idle_hlt) {
                disable_intr();

??  No other changes?

This is bad news..  This means we have races somewhere, or some other badness.

Cheers,
-Peter
--
Peter Wemm - [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]
"All of this is for nothing if we don't go to the stars" - JMS/B5



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