KVM: Add save/restore supporting of in kernel PIT

Signed-off-by: Sheng Yang <sheng.yang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index c7435093bbee..8642f9d1206a 100644
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -288,6 +288,13 @@ static void pit_load_count(struct kvm *kvm, int channel, u32 val)
         }
 }
 
+void kvm_pit_load_count(struct kvm *kvm, int channel, u32 val)
+{
+        mutex_lock(&kvm->arch.vpit->pit_state.lock);
+        pit_load_count(kvm, channel, val);
+        mutex_unlock(&kvm->arch.vpit->pit_state.lock);
+}
+
 static void pit_ioport_write(struct kvm_io_device *this,
                              gpa_t addr, int len, const void *data)
 {