From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48909) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dkVep-0006WN-G2 for qemu-devel@nongnu.org; Wed, 23 Aug 2017 09:25:20 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dkVem-0000jD-Tu for qemu-devel@nongnu.org; Wed, 23 Aug 2017 09:25:19 -0400 Received: from smtp.citrix.com ([66.165.176.89]:58634) by eggs.gnu.org with esmtps (TLS1.0:RSA_ARCFOUR_SHA1:16) (Exim 4.71) (envelope-from ) id 1dkVem-0000hg-OP for qemu-devel@nongnu.org; Wed, 23 Aug 2017 09:25:16 -0400 From: Ross Lagerwall Date: Wed, 23 Aug 2017 14:25:05 +0100 Message-ID: <20170823132505.1505-1-ross.lagerwall@citrix.com> MIME-Version: 1.0 Content-Type: text/plain Subject: [Qemu-devel] [PATCH v2] xen: Emit RTC_CHANGE upon TIMEOFFSET ioreq List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: xen-devel@lists.xenproject.org, Stefano Stabellini , Anthony Perard , Ross Lagerwall When the guest writes to the RTC, Xen emulates it and broadcasts a TIMEOFFSET ioreq. Emit an RTC_CHANGE QMP event to all QMP monitors when this happens rather than ignoring it so that something useful can be done with the information. This is the same event that QEMU generates when it emulates the RTC. This patch by itself doesn't affect any of the toolstacks that I checked; the libxl toolstack doesn't currently handle this event nor does the XAPI toolstack. If nothing handles the event, it is simply ignored. We plan on modifying XAPI to handle it. Signed-off-by: Ross Lagerwall --- Changed in v2: * Expanded commit message. hw/i386/xen/xen-hvm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c index d9ccd5d..ffd20dc 100644 --- a/hw/i386/xen/xen-hvm.c +++ b/hw/i386/xen/xen-hvm.c @@ -16,6 +16,7 @@ #include "hw/i386/apic-msidef.h" #include "hw/xen/xen_common.h" #include "hw/xen/xen_backend.h" +#include "qapi-event.h" #include "qmp-commands.h" #include "qemu/error-report.h" @@ -967,6 +968,7 @@ static void handle_ioreq(XenIOState *state, ioreq_t *req) handle_vmport_ioreq(state, req); break; case IOREQ_TYPE_TIMEOFFSET: + qapi_event_send_rtc_change((int64_t)req->data, &error_abort); break; case IOREQ_TYPE_INVALIDATE: xen_invalidate_map_cache(); -- 2.9.5