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Note that all relatively new x86 systems should prefer acpicpu(4).

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Also mention that the legacy ENHANCED_SPEEDSTEP and POWERNOW_K8 are known to
be problematic or entirely dysfunctional with new processors.
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jruoho 2010-12-20 08:33:09 +00:00
parent 8e53b1ce30
commit 50e8d1386f
1 changed files with 15 additions and 3 deletions
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18
share/man/man4/acpicpu.4
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@ -1,4 +1,4 @@
.\" $NetBSD: acpicpu.4,v 1.17 2010/08/27 18:05:16 wiz Exp $ .\" $NetBSD: acpicpu.4,v 1.18 2010/12/20 08:33:09 jruoho Exp $
.\" .\"
.\" Coyright (c) 2010 Jukka Ruohonen <jruohonen@iki.fi> .\" Coyright (c) 2010 Jukka Ruohonen <jruohonen@iki.fi>
.\" All rights reserved. .\" All rights reserved.
@ -24,7 +24,7 @@
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE. .\" POSSIBILITY OF SUCH DAMAGE.
.\" .\"
.Dd August 27, 2010 .Dd December 20, 2010
.Dt ACPICPU 4 .Dt ACPICPU 4
.Os .Os
.Sh NAME .Sh NAME
@ -294,8 +294,20 @@ Furthermore, in the unlikely case where both
.Nm .Nm
and and
.Xr ichlpcib 4 .Xr ichlpcib 4
or
.Xr piixpcib 4
provide support for P-states, provide support for P-states,
either one but not both may be used. the PCI-based interfaces should not be accessed due possible race conditions.
.Pp
All relatively new x86 systems should prefer
.Nm .
The options noted above are provided for legacy systems.
The P-state support provided by
.Dv ENHANCED_SPEEDSTEP
and
.Dv POWERNOW_K8
are known to be either problematic or
entirely dysfunctional with new x86 processors.
.Sh SEE ALSO .Sh SEE ALSO
.Xr acpi 4 , .Xr acpi 4 ,
.Xr acpitz 4 , .Xr acpitz 4 ,