svn commit: r185331 - head/sys/i386/cpufreq
Maxim Sobolev
sobomax at FreeBSD.org
Wed Nov 26 01:46:36 PST 2008
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;
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