xen: introduce XENPF_settime64

Rename the current XENPF_settime hypercall and related struct to
XENPF_settime32.

Signed-off-by: Stefano Stabellini <[e-mail]>
Acked-by: Arnd Bergmann <[e-mail]>
Reviewed-by: Boris Ostrovsky <[e-mail]>

arch/x86/xen/time.c

···
 	if (!was_set && timespec_compare(&now, &next_sync) < 0)
 		return NOTIFY_OK;
 
-	op.cmd = XENPF_settime;
-	op.u.settime.secs = now.tv_sec;
-	op.u.settime.nsecs = now.tv_nsec;
-	op.u.settime.system_time = xen_clocksource_read();
+	op.cmd = XENPF_settime32;
+	op.u.settime32.secs = now.tv_sec;
+	op.u.settime32.nsecs = now.tv_nsec;
+	op.u.settime32.system_time = xen_clocksource_read();
 
 	(void)HYPERVISOR_platform_op(&op);
 

include/xen/interface/platform.h

···
  * Set clock such that it would read <secs,nsecs> after 00:00:00 UTC,
  * 1 January, 1970 if the current system time was <system_time>.
  */
-#define XENPF_settime             17
-struct xenpf_settime {
+#define XENPF_settime32             17
+struct xenpf_settime32 {
 	/* IN variables. */
 	uint32_t secs;
 	uint32_t nsecs;
 	uint64_t system_time;
 };
-DEFINE_GUEST_HANDLE_STRUCT(xenpf_settime_t);
+DEFINE_GUEST_HANDLE_STRUCT(xenpf_settime32_t);
+#define XENPF_settime64           62
+struct xenpf_settime64 {
+    /* IN variables. */
+    uint64_t secs;
+    uint32_t nsecs;
+    uint32_t mbz;
+    uint64_t system_time;
+};
+DEFINE_GUEST_HANDLE_STRUCT(xenpf_settime64_t);
 
 /*
  * Request memory range (@mfn, @mfn+@nr_mfns-1) to have type @type.
···
 	uint32_t cmd;
 	uint32_t interface_version; /* XENPF_INTERFACE_VERSION */
 	union {
-		struct xenpf_settime           settime;
+		struct xenpf_settime32         settime32;
+		struct xenpf_settime64         settime64;
 		struct xenpf_add_memtype       add_memtype;
 		struct xenpf_del_memtype       del_memtype;
 		struct xenpf_read_memtype      read_memtype;