KVM: x86: use timespec64 for KVM_HC_CLOCK_PAIRING

The hypercall was added using a struct timespec based implementation,
but we should not use timespec in new code.

This changes it to timespec64. There is no functional change
here since the implementation is only used in 64-bit kernels
that use the same definition for timespec and timespec64.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

arch/x86/kvm/x86.c

@@ -1764,7 +1764,7 @@ static int do_monotonic_boot(s64 *t, u64 *tsc_timestamp)
 	return mode;
 }
 
-static int do_realtime(struct timespec *ts, u64 *tsc_timestamp)
+static int do_realtime(struct timespec64 *ts, u64 *tsc_timestamp)
 {
 	struct pvclock_gtod_data *gtod = &pvclock_gtod_data;
 	unsigned long seq;
@@ -1797,7 +1797,7 @@ static bool kvm_get_time_and_clockread(s64 *kernel_ns, u64 *tsc_timestamp)
 }
 
 /* returns true if host is using TSC based clocksource */
-static bool kvm_get_walltime_and_clockread(struct timespec *ts,
+static bool kvm_get_walltime_and_clockread(struct timespec64 *ts,
 					   u64 *tsc_timestamp)
 {
 	/* checked again under seqlock below */
@@ -6626,7 +6626,7 @@ static int kvm_pv_clock_pairing(struct kvm_vcpu *vcpu, gpa_t paddr,
 			        unsigned long clock_type)
 {
 	struct kvm_clock_pairing clock_pairing;
-	struct timespec ts;
+	struct timespec64 ts;
 	u64 cycle;
 	int ret;