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diff --git a/sys/dev/hwpmc/hwpmc_x86.c b/sys/dev/hwpmc/hwpmc_x86.c
--- a/sys/dev/hwpmc/hwpmc_x86.c
+++ b/sys/dev/hwpmc/hwpmc_x86.c
@@ -248,6 +248,7 @@
continue;
md->pmd_classdep[i].pcd_caps &= ~PMC_CAP_INTERRUPT;
}
+ nmi_register_handler(md->pmd_intr);
return (md);
}
@@ -257,6 +258,7 @@
{
lapic_disable_pcint();
+ nmi_remove_handler(md->pmd_intr);
if (cpu_vendor_id == CPU_VENDOR_AMD ||
cpu_vendor_id == CPU_VENDOR_HYGON)
pmc_amd_finalize(md);

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