Commit 5a0b889086 for qemu.org

commit 5a0b8890862251de3f182020cdfa3faaec7623aa
Author: Ross Lagerwall <ross.lagerwall@citrix.com>
Date:   Thu Jan 8 13:54:06 2026 +0000

    xen-hvm: Emit RTC_CHANGE upon TIMEOFFSET ioreq

    When the guest writes to the RTC, the write is intercepted and emulated
    by Xen and the time difference is broadcasted as a TIMEOFFSET ioreq.
    Emit an RTC_CHANGE QMP event when this happens rather than ignoring it
    so that something can make use of the information (e.g. the toolstack
    can persist it between VM starts).

    Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
    Message-ID: <20260108135406.1879210-1-ross.lagerwall@citrix.com>
    Acked-by: Anthony PERARD <anthony.perard@vates.tech>
    Signed-off-by: Anthony PERARD <anthony.perard@vates.tech>

diff --git a/hw/xen/xen-hvm-common.c b/hw/xen/xen-hvm-common.c
index 59c73dfaeb..b55d7f4a94 100644
--- a/hw/xen/xen-hvm-common.c
+++ b/hw/xen/xen-hvm-common.c
@@ -4,6 +4,7 @@
 #include "qemu/error-report.h"
 #include "qemu/target-info.h"
 #include "qapi/error.h"
+#include "qapi/qapi-events-misc.h"
 #include "exec/target_page.h"
 #include "trace.h"

@@ -471,6 +472,7 @@ static void handle_ioreq(XenIOState *state, ioreq_t *req)
             cpu_ioreq_move(req);
             break;
         case IOREQ_TYPE_TIMEOFFSET:
+            qapi_event_send_rtc_change((int64_t)req->data, "");
             break;
         case IOREQ_TYPE_INVALIDATE:
             xen_invalidate_map_cache();