From nobody Tue May 13 11:56:25 2025 Delivered-To: importer2@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+importer2=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 1675262296811826.1469206903677; Wed, 1 Feb 2023 06:38:16 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pNECB-0004Oz-9v; Wed, 01 Feb 2023 09:34:43 -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 1pNE9w-0001Vc-KD for qemu-devel@nongnu.org; Wed, 01 Feb 2023 09:32:24 -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 1pNE9i-00039E-O5 for qemu-devel@nongnu.org; Wed, 01 Feb 2023 09:32:20 -0500 Received: from i7.infradead.org ([2001:8b0:10b:1:21e:67ff:fecb:7a92]) by desiato.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1pNE8r-004nyT-2u; Wed, 01 Feb 2023 14:31:22 +0000 Received: from dwoodhou by i7.infradead.org with local (Exim 4.96 #2 (Red Hat Linux)) id 1pNE9Q-007JsI-1Z; Wed, 01 Feb 2023 14:31:52 +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=P/qomelk/UH5MdSA+XHIcdDA/X4BK59j4DtJyIjAjbI=; b=gUTA3ZUbaBf18soLFImsAlAFmg Z+fE60ExpEELr5kriHY4Ip/jnWjX39tFRNIwIoMh7Kpw4c1mKcrj8L4+P9v5p9lK5wil/D8BhAnLv m+r8lPTVVTOjfdDMlOwBStqUucdmJxrf4x14CHKgF5+k5rqG6Ky5MWqrOKhP4RURporY81ZVxB+kd NflmRgLyLQ53bZtoQW+xJcsVege/nk0wZv4VvxHiOPE9gCEZXOy/agl5bdRkCKyfo8++1mZxffE76 V/MyvMhcPz31Y8XwUK8W7LcWG8/f6ApgxXCkPUpOwvFXOevrzXyX2sn3jLTtCgGClgnj9WKB2NTtn 35GAGwbg==; From: David Woodhouse To: Peter Maydell , 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 , Julien Grall , "Michael S. Tsirkin" , Marcel Apfelbaum , armbru@redhat.com Subject: [PATCH v10 35/59] hw/xen: Implement EVTCHNOP_alloc_unbound Date: Wed, 1 Feb 2023 14:31:24 +0000 Message-Id: <20230201143148.1744093-36-dwmw2@infradead.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230201143148.1744093-1-dwmw2@infradead.org> References: <20230201143148.1744093-1-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+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=2001:8b0:10b:1:d65d:64ff:fe57:4e05; envelope-from=BATV+c61c7683afee22e62f8e+7101+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+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1675262298372100003 Content-Type: text/plain; charset="utf-8" From: David Woodhouse Signed-off-by: David Woodhouse Reviewed-by: Paul Durrant --- hw/i386/kvm/xen_evtchn.c | 32 ++++++++++++++++++++++++++++++++ hw/i386/kvm/xen_evtchn.h | 2 ++ target/i386/kvm/xen-emu.c | 15 +++++++++++++++ 3 files changed, 49 insertions(+) diff --git a/hw/i386/kvm/xen_evtchn.c b/hw/i386/kvm/xen_evtchn.c index a97d6ba61d..9dc5a98d94 100644 --- a/hw/i386/kvm/xen_evtchn.c +++ b/hw/i386/kvm/xen_evtchn.c @@ -835,6 +835,38 @@ int xen_evtchn_bind_ipi_op(struct evtchn_bind_ipi *ipi) return ret; } =20 +int xen_evtchn_alloc_unbound_op(struct evtchn_alloc_unbound *alloc) +{ + XenEvtchnState *s =3D xen_evtchn_singleton; + uint16_t type_val; + int ret; + + if (!s) { + return -ENOTSUP; + } + + if (alloc->dom !=3D DOMID_SELF && alloc->dom !=3D xen_domid) { + return -ESRCH; + } + + if (alloc->remote_dom =3D=3D DOMID_QEMU) { + type_val =3D PORT_INFO_TYPEVAL_REMOTE_QEMU; + } else if (alloc->remote_dom =3D=3D DOMID_SELF || + alloc->remote_dom =3D=3D xen_domid) { + type_val =3D 0; + } else { + return -EPERM; + } + + qemu_mutex_lock(&s->port_lock); + + ret =3D allocate_port(s, 0, EVTCHNSTAT_unbound, type_val, &alloc->port= ); + + qemu_mutex_unlock(&s->port_lock); + + return ret; +} + int xen_evtchn_send_op(struct evtchn_send *send) { XenEvtchnState *s =3D xen_evtchn_singleton; diff --git a/hw/i386/kvm/xen_evtchn.h b/hw/i386/kvm/xen_evtchn.h index 500fdbe8b8..fc080138e3 100644 --- a/hw/i386/kvm/xen_evtchn.h +++ b/hw/i386/kvm/xen_evtchn.h @@ -21,11 +21,13 @@ struct evtchn_unmask; struct evtchn_bind_virq; struct evtchn_bind_ipi; struct evtchn_send; +struct evtchn_alloc_unbound; int xen_evtchn_status_op(struct evtchn_status *status); int xen_evtchn_close_op(struct evtchn_close *close); int xen_evtchn_unmask_op(struct evtchn_unmask *unmask); int xen_evtchn_bind_virq_op(struct evtchn_bind_virq *virq); int xen_evtchn_bind_ipi_op(struct evtchn_bind_ipi *ipi); int xen_evtchn_send_op(struct evtchn_send *send); +int xen_evtchn_alloc_unbound_op(struct evtchn_alloc_unbound *alloc); =20 #endif /* QEMU_XEN_EVTCHN_H */ diff --git a/target/i386/kvm/xen-emu.c b/target/i386/kvm/xen-emu.c index 5299614d3c..e186dec9a9 100644 --- a/target/i386/kvm/xen-emu.c +++ b/target/i386/kvm/xen-emu.c @@ -918,6 +918,21 @@ static bool kvm_xen_hcall_evtchn_op(struct kvm_xen_exi= t *exit, X86CPU *cpu, err =3D xen_evtchn_send_op(&send); break; } + case EVTCHNOP_alloc_unbound: { + struct evtchn_alloc_unbound alloc; + + qemu_build_assert(sizeof(alloc) =3D=3D 8); + if (kvm_copy_from_gva(cs, arg, &alloc, sizeof(alloc))) { + err =3D -EFAULT; + break; + } + + err =3D xen_evtchn_alloc_unbound_op(&alloc); + if (!err && kvm_copy_to_gva(cs, arg, &alloc, sizeof(alloc))) { + err =3D -EFAULT; + } + break; + } default: return false; } --=20 2.39.0