[PATCH v2 1/2] x86: restore pv_rtc_handler() invocation

[Jan Beulich <jbeulich@xxxxxxxx>]

This was lost when making the logic accessible to PVH Dom0.

Fixes: 835d8d69d96a ("x86/rtc: provide mediated access to RTC for PVH dom0")
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/xen/arch/x86/time.c
+++ b/xen/arch/x86/time.c
@@ -1160,6 +1160,10 @@ void rtc_guest_write(unsigned int port,
     case RTC_PORT(1):
         if ( !ioports_access_permitted(currd, RTC_PORT(0), RTC_PORT(1)) )
             break;
+
+        if ( pv_rtc_handler )
+            pv_rtc_handler(currd->arch.cmos_idx & 0x7f, data);
+
         spin_lock_irqsave(&rtc_lock, flags);
         outb(currd->arch.cmos_idx & 0x7f, RTC_PORT(0));
         outb(data, RTC_PORT(1));