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D16923.id.diff
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D16923.id.diff

Index: head/stand/defaults/loader.conf.5
===================================================================
--- head/stand/defaults/loader.conf.5
+++ head/stand/defaults/loader.conf.5
@@ -23,7 +23,7 @@
.\" SUCH DAMAGE.
.\"
.\" $FreeBSD$
-.Dd March 23, 2018
+.Dd August 28, 2018
.Dt LOADER.CONF 5
.Os
.Sh NAME
@@ -289,6 +289,29 @@
.Pq Dq /boot/entropy
The name of the very early
boot-time entropy cache file.
+.It Va cpu_microcode_load
+.Pq Dq NO
+If set to
+.Dq YES ,
+the microcode update file specified by
+.Va cpu_microcode_name
+will be loaded and applied very early during boot.
+This provides functionality similar to
+.Xr cpucontrol 8
+but ensures that CPU features enabled by microcode updates can be
+used by the kernel.
+The update will be re-applied automatically when resuming from an
+ACPI sleep state.
+If the update file contains updates for multiple processor models,
+the kernel will search for and extract a matching update.
+Currently this setting is supported only on Intel
+.Dv i386
+and
+.Dv amd64
+processors.
+It has no effect on other processor types.
+.It Va cpu_microcode_name
+A path to a microcode update file.
.El
.Sh OTHER SETTINGS
Other settings that may be used in
@@ -319,6 +342,7 @@
.Sh SEE ALSO
.Xr rc.conf 5 ,
.Xr boot 8 ,
+.Xr cpucontrol 8 ,
.Xr loader 8 ,
.Xr loader.4th 8
.Sh HISTORY

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