D7397.diff
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	Index: head/sys/dev/hwpmc/hwpmc_core.c
	===================================================================
	--- head/sys/dev/hwpmc/hwpmc_core.c
	+++ head/sys/dev/hwpmc/hwpmc_core.c
	@@ -365,7 +365,7 @@
	if (PMC_IS_SAMPLING_MODE(PMC_TO_MODE(pm)))
	*v = iaf_perfctr_value_to_reload_count(tmp);
	else
	- *v = tmp;
	+ *v = tmp & ((1ULL << core_iaf_width) - 1);

	PMCDBG4(MDP,REA,1, "iaf-read cpu=%d ri=%d msr=0x%x -> v=%jx", cpu, ri,
	IAF_RI_TO_MSR(ri), *v);