kvmclock_offset is negative, it should be timespec64_add intead of
timespec64_sub.
kvm->arch.kvmclock_offset = -ktime_get_boot_ns()
Signed-off-by: Huaitong Han <huaitong.han@xxxxxxxxx>
---
arch/x86/kvm/x86.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 2f22810..7668a0e 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1208,7 +1208,7 @@ static void kvm_write_wall_clock(struct kvm *kvm, gpa_t wall_clock)
if (kvm->arch.kvmclock_offset) {
struct timespec64 ts = ns_to_timespec64(kvm->arch.kvmclock_offset);
- boot = timespec64_sub(boot, ts);
+ boot = timespec64_add(boot, ts);
}
wc.sec = (u32)boot.tv_sec; /* overflow in 2106 guest time */
wc.nsec = boot.tv_nsec;
--
1.8.3.1
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