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-rw-r--r--arch/x86/kernel/time.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kernel/time.c b/arch/x86/kernel/time.c
index 1fa632e0829f..b23f5420b26a 100644
--- a/arch/x86/kernel/time.c
+++ b/arch/x86/kernel/time.c
@@ -120,4 +120,10 @@ void clocksource_arch_init(struct clocksource *cs)
cs->name, cs->archdata.vclock_mode);
cs->archdata.vclock_mode = VCLOCK_NONE;
}
+
+ if (cs->mask != CLOCKSOURCE_MASK(64)) {
+ pr_warn("clocksource %s registered with invalid mask %016llx. Disabling vclock.\n",
+ cs->name, cs->mask);
+ cs->archdata.vclock_mode = VCLOCK_NONE;
+ }
}