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diff --git a/sys/arm64/arm64/locore.S b/sys/arm64/arm64/locore.S
--- a/sys/arm64/arm64/locore.S
+++ b/sys/arm64/arm64/locore.S
@@ -420,6 +420,11 @@
isb
2:
+ /* Set CNTPOFF_EL2 if available */
+ CHECK_CPU_FEAT(x2, ID_AA64MMFR0, ECV, POFF, .Lno_feat_ecv_poff)
+ msr CNTPOFF_EL2_REG, xzr
+.Lno_feat_ecv_poff:
+
/* Don't trap to EL2 for CP15 traps */
msr hstr_el2, xzr

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