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Index: sysutils/Makefile
===================================================================
--- sysutils/Makefile
+++ sysutils/Makefile
@@ -579,6 +579,7 @@
SUBDIR += kops
SUBDIR += krename
SUBDIR += kshutdown
+ SUBDIR += kvmclock-kmod
SUBDIR += ksystemlog
SUBDIR += kubectl
SUBDIR += lava
Index: sysutils/kvmclock-kmod/Makefile
===================================================================
--- /dev/null
+++ sysutils/kvmclock-kmod/Makefile
@@ -0,0 +1,26 @@
+PORTNAME= kvmclock
+DISTVERSION= 0.0.0-a2
+CATEGORIES= sysutils
+PKGNAMESUFFIX?= -kmod
+
+MAINTAINER= dch@FreeBSD.org
+COMMENT= Paravirtualized Linux KVM clock support
+
+LICENSE= BSD2CLAUSE
+
+ONLY_FOR_ARCHS= amd64 i386 arm64
+ONLY_FOR_ARCHS_REASON= not yet tested on other architectures
+
+USES= kmod
+KMOD= kvmclock
+NEED_ROOT= yes
+
+USE_GITHUB= yes
+GH_ACCOUNT= klarasystems
+
+PLIST_FILES= ${KMODDIR}/kvmclock.ko
+
+OPTIONS_DEFINE= DEBUG
+OPTIONS_SUB= yes
+
+.include <bsd.port.mk>
Index: sysutils/kvmclock-kmod/distinfo
===================================================================
--- /dev/null
+++ sysutils/kvmclock-kmod/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1621967719
+SHA256 (klarasystems-kvmclock-0.0.0-a2_GH0.tar.gz) = 1497f3eca5bc1f1d9708aa601f5fdbdea08852e16b6c9c1d55bc6d0262baf708
+SIZE (klarasystems-kvmclock-0.0.0-a2_GH0.tar.gz) = 7676
Index: sysutils/kvmclock-kmod/pkg-descr
===================================================================
--- /dev/null
+++ sysutils/kvmclock-kmod/pkg-descr
@@ -0,0 +1,11 @@
+Development version of kvmclock FreeBSD driver for virtual machines.
+
+References and prior art:
+
+https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/virtualization_deployment_and_administration_guide/chap-kvm_guest_timing_management
+https://www.vmware.com/files/pdf/techpaper/Timekeeping-In-VirtualMachines.pdf
+http://oliveryang.net/2015/09/pitfalls-of-TSC-usage/#33-tsc-emulation-on-different-hypervisors
+https://reviews.freebsd.org/D29531
+https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=216759
+
+WWW: https://reviews.freebsd.org/D29733
Index: sysutils/kvmclock-kmod/pkg-message
===================================================================
--- /dev/null
+++ sysutils/kvmclock-kmod/pkg-message
@@ -0,0 +1,10 @@
+kvmclock-kmod is experimental and currently under development. This port
+provides an easy and quick method for users to test this code for early
+testing, feedback and bug reports.
+
+This driver enables FreeBSD to use a more efficient paravirtualized
+hardware clock, instead of emulating one, or abusing hypervisor
+interrupts, when running as a virtualized OS under Linux KVM
+(Kernel-based Virtual Machine).
+
+Please report successes and issues to: https://reviews.freebsd.org/D29733

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