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From: Maxim Sobolev <sobomax@FreeBSD.org>
Date: Wed, 26 Nov 2008 09:46:35 +0000 (UTC)
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Subject: svn commit: r185331 - head/sys/i386/cpufreq
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Author: sobomax
Date: Wed Nov 26 09:46:35 2008
New Revision: 185331
URL: http://svn.freebsd.org/changeset/base/185331

Log:
  Add Pentium D cores into the list that can't handle 12.5% and 25%
  throttle. My SMP kernel hangs when one of those is selected by
  powerd. Errata AA21 here:
  
  ftp://download.intel.com/design/PentiumXE/specupdt/31030717.pdf
  
  MFC after:	2 weeks

Modified:
  head/sys/i386/cpufreq/p4tcc.c

Modified: head/sys/i386/cpufreq/p4tcc.c
==============================================================================
--- head/sys/i386/cpufreq/p4tcc.c	Wed Nov 26 07:36:17 2008	(r185330)
+++ head/sys/i386/cpufreq/p4tcc.c	Wed Nov 26 09:46:35 2008	(r185331)
@@ -188,9 +188,12 @@ p4tcc_attach(device_t dev)
 	case 0x0a:
 	case 0x12:
 	case 0x13:
+	case 0x62:	/* Pentium D B1: errata AA21 */
+	case 0x64:	/* Pentium D C1: errata AA21 */
+	case 0x65:	/* Pentium D D0: errata AA21 */
 		/*
 		 * These CPU models hang when set to 12.5% or 25%.
-		 * See Errata N44 and P18l.
+		 * See Errata N44, P18l and AA21.
 		 */
 		sc->set_count -= 2;
 		break;