From nobody Tue Feb 10 20:48:09 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1671151391497266.47926132593534; Thu, 15 Dec 2022 16:43:11 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1p5ynF-0005Dr-VG; Thu, 15 Dec 2022 19:41:42 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1p5yn8-0005D5-CP for qemu-devel@nongnu.org; Thu, 15 Dec 2022 19:41:36 -0500 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1p5yn5-0006c1-FB for qemu-devel@nongnu.org; Thu, 15 Dec 2022 19:41:33 -0500 Received: from i7.infradead.org ([2001:8b0:10b:1:21e:67ff:fecb:7a92]) by desiato.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1p5ymx-00Azz0-9d; Fri, 16 Dec 2022 00:41:26 +0000 Received: from dwoodhou by i7.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1p5ymw-003cQK-Gh; Fri, 16 Dec 2022 00:41:22 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description; bh=RO1GgqSiEtjgr0AaYpO5Ge7U63e0Y/fq9edf1weTkbc=; b=O9NPinrEAdVqEvG0TUvQRVPTkj AlOabZKqkW0Q/0VdvmPT3Evy3BFdUTv3U/YhyFWIhHu9bg8BKI1O46Yc8P9/isujeNWEFVjq5VC+T t0qAnC/NIXYs/4rMu8+IrsOcCs8Dvk3AdMRHznhPR7Sj57aGTseEoF9fNjL1qcPRDT7//VRN8j6vU dIZ5u3EOIvAaOSUdh+qjDfjOS6ZBel7Wm8aUKokJmuyIHZ3FWOb7jgvbPV+kxdebMGuw9xxBSRmzK bjjAvyPVp3S+LiG7W7t2mQbargkl2g8O2mOb3K6sdBT1XrxGkHXe9uKt/0nXPZ1to3zaGQdxDa5Bt FEPsBR7w==; From: David Woodhouse To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Paul Durrant , Joao Martins , Ankur Arora , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Thomas Huth , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Juan Quintela , "Dr . David Alan Gilbert" , Claudio Fontana Subject: [RFC PATCH v3 35/38] i386/xen: add monitor commands to test event injection Date: Fri, 16 Dec 2022 00:41:14 +0000 Message-Id: <20221216004117.862106-36-dwmw2@infradead.org> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20221216004117.862106-1-dwmw2@infradead.org> References: <20221216004117.862106-1-dwmw2@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SRS-Rewrite: SMTP reverse-path rewritten from by desiato.infradead.org. See http://www.infradead.org/rpr.html Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=2001:8b0:10b:1:d65d:64ff:fe57:4e05; envelope-from=BATV+54656a84ae694b50c6d0+7054+infradead.org+dwmw2@desiato.srs.infradead.org; helo=desiato.infradead.org X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1671151391792100003 Content-Type: text/plain; charset="utf-8" From: Joao Martins Specifically add listing, injection of event channels. Signed-off-by: Joao Martins Signed-off-by: David Woodhouse --- hmp-commands.hx | 30 +++++++++++++++ hw/i386/kvm/xen_evtchn.c | 83 ++++++++++++++++++++++++++++++++++++++++ hw/i386/kvm/xen_evtchn.h | 3 ++ monitor/misc.c | 4 ++ 4 files changed, 120 insertions(+) diff --git a/hmp-commands.hx b/hmp-commands.hx index 673e39a697..a36516c287 100644 --- a/hmp-commands.hx +++ b/hmp-commands.hx @@ -1815,3 +1815,33 @@ SRST Dump the FDT in dtb format to *filename*. ERST #endif + +#if defined(CONFIG_XEN_EMU) + + { + .name =3D "xen-event-inject", + .args_type =3D "port:i", + .params =3D "port", + .help =3D "inject event channel", + .cmd =3D hmp_xen_event_inject, + }, + +SRST +``xen-event-inject`` *port* + Notify guest via event channel on port *port*. +ERST + + + { + .name =3D "xen-event-list", + .args_type =3D "", + .params =3D "", + .help =3D "list event channel state", + .cmd =3D hmp_xen_event_list, + }, + +SRST +``xen-event-list`` + List event channels in the guest +ERST +#endif diff --git a/hw/i386/kvm/xen_evtchn.c b/hw/i386/kvm/xen_evtchn.c index 225d984371..9292602c09 100644 --- a/hw/i386/kvm/xen_evtchn.c +++ b/hw/i386/kvm/xen_evtchn.c @@ -19,6 +19,8 @@ #include "exec/target_page.h" #include "exec/address-spaces.h" #include "migration/vmstate.h" +#include "monitor/monitor.h" +#include "qapi/qmp/qdict.h" =20 #include "hw/sysbus.h" #include "hw/xen/xen.h" @@ -955,3 +957,84 @@ int xen_evtchn_send_op(struct evtchn_send *send) return ret; } =20 +static const char *type_names[] =3D { + "closed", + "unbound", + "interdomain", + "pirq", + "virq", + "ipi" +}; + +void hmp_xen_event_list(Monitor *mon, const QDict *qdict) +{ + XenEvtchnState *s =3D xen_evtchn_singleton; + void *shinfo, *pending, *mask; + int i; + + if (!s) { + monitor_printf(mon, "Xen event channel emulation not enabled\n"); + return; + } + + shinfo =3D xen_overlay_page_ptr(XENMAPSPACE_shared_info, 0); + if (!shinfo) { + monitor_printf(mon, "Xen shared info page not allocated\n"); + return; + } + if (xen_is_long_mode()) { + pending =3D shinfo + offsetof(struct shared_info, evtchn_pending); + mask =3D shinfo + offsetof(struct shared_info, evtchn_mask); + } else { + pending =3D shinfo + offsetof(struct compat_shared_info, evtchn_pe= nding); + mask =3D shinfo + offsetof(struct compat_shared_info, evtchn_mask); + } + + qemu_mutex_lock(&s->port_lock); + + for (i =3D 0; i < s->nr_ports; i++) { + XenEvtchnPort *p =3D &s->port_table[i]; + + if (p->type =3D=3D EVTCHNSTAT_closed) { + continue; + } + + monitor_printf(mon, "port %4u %s/%d vcpu:%d pending:%d mask:%d\n",= i, + type_names[p->type], p->type_val, p->vcpu, + test_bit(i, pending), test_bit(i, mask)); + } + + qemu_mutex_unlock(&s->port_lock); +} + +void hmp_xen_event_inject(Monitor *mon, const QDict *qdict) +{ + XenEvtchnState *s =3D xen_evtchn_singleton; + int port =3D qdict_get_int(qdict, "port"); + XenEvtchnPort *p; + + if (!s) { + monitor_printf(mon, "Xen event channel emulation not enabled\n"); + return; + } + + if (!valid_port(port)) { + monitor_printf(mon, "Invalid port %d\n", port); + return; + } + p =3D &s->port_table[port]; + + qemu_mutex_lock(&s->port_lock); + + monitor_printf(mon, "port %4u %s/%d vcpu:%d\n", port, + type_names[p->type], p->type_val, p->vcpu); + + if (set_port_pending(s, port)) { + monitor_printf(mon, "Failed to set port %d\n", port); + } else { + monitor_printf(mon, "Delivered port %d\n", port); + } + + qemu_mutex_unlock(&s->port_lock); +} + diff --git a/hw/i386/kvm/xen_evtchn.h b/hw/i386/kvm/xen_evtchn.h index b93f534bee..2acbaeabaa 100644 --- a/hw/i386/kvm/xen_evtchn.h +++ b/hw/i386/kvm/xen_evtchn.h @@ -13,6 +13,9 @@ void xen_evtchn_create(void); int xen_evtchn_set_callback_param(uint64_t param); =20 +void hmp_xen_event_list(Monitor *mon, const QDict *qdict); +void hmp_xen_event_inject(Monitor *mon, const QDict *qdict); + struct evtchn_status; struct evtchn_close; struct evtchn_unmask; diff --git a/monitor/misc.c b/monitor/misc.c index 205487e2b9..2b11c0f86a 100644 --- a/monitor/misc.c +++ b/monitor/misc.c @@ -88,6 +88,10 @@ /* Make devices configuration available for use in hmp-commands*.hx templa= tes */ #include CONFIG_DEVICES =20 +#ifdef CONFIG_XEN_EMU +#include "hw/i386/kvm/xen_evtchn.h" +#endif + /* file descriptors passed via SCM_RIGHTS */ typedef struct mon_fd_t mon_fd_t; struct mon_fd_t { --=20 2.35.3