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-rw-r--r--arch/powerpc/kvm/book3s_hv.c3
-rw-r--r--arch/powerpc/kvm/emulate.c7
2 files changed, 4 insertions, 6 deletions
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 3e3a71594e63..a6d948b6425b 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -2160,8 +2160,7 @@ static void kvmppc_set_timer(struct kvm_vcpu *vcpu)
kvmppc_core_prepare_to_enter(vcpu);
return;
}
- dec_nsec = (vcpu->arch.dec_expires - now) * NSEC_PER_SEC
- / tb_ticks_per_sec;
+ dec_nsec = tb_to_ns(vcpu->arch.dec_expires - now);
hrtimer_start(&vcpu->arch.dec_timer, dec_nsec, HRTIMER_MODE_REL);
vcpu->arch.timer_running = 1;
}
diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c
index fa888bfc347e..9f5b8c01c4e1 100644
--- a/arch/powerpc/kvm/emulate.c
+++ b/arch/powerpc/kvm/emulate.c
@@ -61,11 +61,10 @@ void kvmppc_emulate_dec(struct kvm_vcpu *vcpu)
dec_time = vcpu->arch.dec;
/*
- * Guest timebase ticks at the same frequency as host decrementer.
- * So use the host decrementer calculations for decrementer emulation.
+ * Guest timebase ticks at the same frequency as host timebase.
+ * So use the host timebase calculations for decrementer emulation.
*/
- dec_time = dec_time << decrementer_clockevent.shift;
- do_div(dec_time, decrementer_clockevent.mult);
+ dec_time = tb_to_ns(dec_time);
dec_nsec = do_div(dec_time, NSEC_PER_SEC);
hrtimer_start(&vcpu->arch.dec_timer,
ktime_set(dec_time, dec_nsec), HRTIMER_MODE_REL);