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Remove mostly obsolete hint to disable LAPIC timers.

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It is partially covered by new code and partially by new CPUs.

PR:		195016
Submitted by:	tobias.rehbein@web.de
MFC after:	1 week
This commit is contained in:
Alexander Motin 2014-11-14 22:01:14 +00:00
parent 8a3e6d90e5
commit 9f4fae3950
1 changed files with 4 additions and 12 deletions
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16
share/man/man4/acpi.4
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@ -238,7 +238,8 @@ Override the assumed memory starting address for PCI host bridges.
.It Va hw.acpi.install_interface , hw.acpi.remove_interface
Install or remove OS interface(s) to control return value of
.Ql _OSI
query method. When an OS interface is specified in
query method.
When an OS interface is specified in
.Va hw.acpi.install_interface ,
.Li _OSI
query for the interface returns it is
@ -249,7 +250,8 @@ Conversely, when an OS interface is specified in
query returns it is
.Em not supported .
Multiple interfaces can be specified in a comma-separated list and
any leading white spaces will be ignored. For example,
any leading white spaces will be ignored.
For example,
.Qq Li FreeBSD, Linux
is a valid list of two interfaces
.Qq Li FreeBSD
@ -626,13 +628,3 @@ IRQ routing problems.
Upgrade your BIOS to the latest version available from the vendor before
deciding it is a problem with
.Nm .
.Pp
The
.Nm
CPU idle power management drive conflicts with the local APIC (LAPIC)
timer.
Disable the local APIC timer with
.Va hint.apic.0.clock=0
or do not use the
.Li C3
and deeper states if the local APIC timer is enabled.