D60013.id187684.diff
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	diff --git a/sys/conf/NOTES b/sys/conf/NOTES
	--- a/sys/conf/NOTES
	+++ b/sys/conf/NOTES
	@@ -282,6 +282,12 @@
	# and allows interrupt threads to run sooner rather than waiting.
	options PREEMPTION

	+# IPI_PREEMPTION instructs the 4BSD scheduler to immediately preempt a thread
	+# running on a specific CPU when a thread pinned there has higher priority,
	+# instead of waiting for a return to userland. It has no effect on other
	+# schedulers (e.g., ULE).
	+options IPI_PREEMPTION
	+
	# SMP Debugging Options:
	#
	# CALLOUT_PROFILING enables rudimentary profiling of the callwheel data
	diff --git a/sys/x86/conf/NOTES b/sys/x86/conf/NOTES
	--- a/sys/x86/conf/NOTES
	+++ b/sys/x86/conf/NOTES
	@@ -28,13 +28,6 @@
	#####################################################################
	# SMP OPTIONS:
	#
	-# Notes:
	-#
	-# IPI_PREEMPTION instructs the kernel to preempt threads running on other
	-# CPUS if needed. Relies on the PREEMPTION option
	-
	-# Optional:
	-options IPI_PREEMPTION

	# Debugging options.
	#