PERFORCE change 89233 for review
John Baldwin
jhb at FreeBSD.org
Thu Jan 5 13:16:45 PST 2006
http://perforce.freebsd.org/chv.cgi?CH=89233
Change 89233 by jhb at jhb_slimer on 2006/01/05 21:16:19
Add a note about a panic I just ran into on alpha.
Affected files ...
.. //depot/projects/smpng/sys/kern/kern_proc.c#81 edit
Differences ...
==== //depot/projects/smpng/sys/kern/kern_proc.c#81 (text+ko) ====
@@ -907,6 +907,12 @@
error = SYSCTL_OUT(req, (caddr_t)&kinfo_proc,
sizeof(kinfo_proc));
} else {
+ /*
+ * XXX: Can't call copyout() here on alpha with sched_lock
+ * held since we can get a pmap_emulate_reference() fault
+ * when we write to the page. Need to ask alc@ about how
+ * best to handle this.
+ */
mtx_lock_spin(&sched_lock);
if (FIRST_THREAD_IN_PROC(p) != NULL)
FOREACH_THREAD_IN_PROC(p, td) {
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