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From: John Baldwin <jhb@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
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Subject: PERFORCE change 93714 for review
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http://perforce.freebsd.org/chv.cgi?CH=93714

Change 93714 by jhb@jhb_slimer on 2006/03/21 15:25:50

	Fix a possible problem with alpha pmap.

Affected files ...

.. //depot/projects/smpng/sys/alpha/alpha/pmap.c#77 edit

Differences ...

==== //depot/projects/smpng/sys/alpha/alpha/pmap.c#77 (text+ko) ====

@@ -617,12 +617,14 @@
 	vm_offset_t va = ((struct pmap_invalidate_page_arg *) arg)->va;
 #endif
 
+	critical_enter();
 	if (pmap->pm_active & PCPU_GET(cpumask)) {
 		ALPHA_TBIS(va);
 		alpha_pal_imb();		/* XXX overkill? */
 	} else {
 		pmap_invalidate_asn(pmap);
 	}
+	critical_exit();
 }
 
 static void
@@ -638,11 +640,13 @@
 	pmap_t pmap = (pmap_t) arg;
 #endif
 
+	critical_enter();
 	if (pmap->pm_active & PCPU_GET(cpumask)) {
 		ALPHA_TBIA();
 		alpha_pal_imb();		/* XXX overkill? */
 	} else
 		pmap_invalidate_asn(pmap);
+	critical_exit();
 }
 
 static void