From nobody Tue May 13 11:41:35 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 1675262071947188.82217120949872; Wed, 1 Feb 2023 06:34:31 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pNEBB-0002fu-5M; Wed, 01 Feb 2023 09:33:41 -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 1pNE9m-0001Rz-Ev for qemu-devel@nongnu.org; Wed, 01 Feb 2023 09:32:14 -0500 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pNE9g-00036q-Qz for qemu-devel@nongnu.org; Wed, 01 Feb 2023 09:32:14 -0500 Received: from i7.infradead.org ([2001:8b0:10b:1:21e:67ff:fecb:7a92]) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1pNE9Q-00CMbG-Kl; Wed, 01 Feb 2023 14:31:54 +0000 Received: from dwoodhou by i7.infradead.org with local (Exim 4.96 #2 (Red Hat Linux)) id 1pNE9Q-007JsQ-1v; 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=casper.20170209; 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=Hi/G5qLBuuT3IgQZTtEGEPCw977It6w5tenALXQ4eMU=; b=OeuOxxLLmEjRX2bPAM8a8okhEu mNADN7ceVnfGtH9Pwbv0lh12DGhJxDW/A1kf/oydqqVdm1rVBW574sXUIPmNIT5wU0TaWZ2GCiqcg jaO4s35EUT6sFsjXwzfZwNSD+MoKYBihj8WCXMmJ6qY84iJTCiLH7V7M6uvvbNt6A20ov8eMVQtD9 oawTPxfLcgZzNzWBzAzt26Zfdb33ZgVRbG8a5WUUZP9TZgIPF3O3tq9LlWcQ0CwsIT4ZHoE9q/E5S vESWkT062YtfZYI14YOg9WBT3OrChKTA9ro3pKZ1/79wUQ8fx9f/pH+cPc7Vguou2Tasj0Tx2kx5/ mRVE/9dg==; 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 37/59] hw/xen: Implement EVTCHNOP_bind_vcpu Date: Wed, 1 Feb 2023 14:31:26 +0000 Message-Id: <20230201143148.1744093-38-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 casper.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:1236::1; envelope-from=BATV+8c5eeea0684575598b25+7101+infradead.org+dwmw2@casper.srs.infradead.org; helo=casper.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: 1675262184299100001 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 | 40 +++++++++++++++++++++++++++++++++++++++ hw/i386/kvm/xen_evtchn.h | 2 ++ target/i386/kvm/xen-emu.c | 12 ++++++++++++ 3 files changed, 54 insertions(+) diff --git a/hw/i386/kvm/xen_evtchn.c b/hw/i386/kvm/xen_evtchn.c index 3e6f7afcbc..f87b6a3b23 100644 --- a/hw/i386/kvm/xen_evtchn.c +++ b/hw/i386/kvm/xen_evtchn.c @@ -789,6 +789,46 @@ int xen_evtchn_unmask_op(struct evtchn_unmask *unmask) return ret; } =20 +int xen_evtchn_bind_vcpu_op(struct evtchn_bind_vcpu *vcpu) +{ + XenEvtchnState *s =3D xen_evtchn_singleton; + XenEvtchnPort *p; + int ret =3D -EINVAL; + + if (!s) { + return -ENOTSUP; + } + + if (!valid_port(vcpu->port)) { + return -EINVAL; + } + + if (!valid_vcpu(vcpu->vcpu)) { + return -ENOENT; + } + + qemu_mutex_lock(&s->port_lock); + + p =3D &s->port_table[vcpu->port]; + + if (p->type =3D=3D EVTCHNSTAT_interdomain || + p->type =3D=3D EVTCHNSTAT_unbound || + p->type =3D=3D EVTCHNSTAT_pirq || + (p->type =3D=3D EVTCHNSTAT_virq && virq_is_global(p->type_val))) { + /* + * unmask_port() with do_unmask=3D=3Dfalse will just raise the eve= nt + * on the new vCPU if the port was already pending. + */ + p->vcpu =3D vcpu->vcpu; + unmask_port(s, vcpu->port, false); + ret =3D 0; + } + + qemu_mutex_unlock(&s->port_lock); + + return ret; +} + int xen_evtchn_bind_virq_op(struct evtchn_bind_virq *virq) { XenEvtchnState *s =3D xen_evtchn_singleton; diff --git a/hw/i386/kvm/xen_evtchn.h b/hw/i386/kvm/xen_evtchn.h index 1ebc7580eb..486b031c82 100644 --- a/hw/i386/kvm/xen_evtchn.h +++ b/hw/i386/kvm/xen_evtchn.h @@ -23,6 +23,7 @@ struct evtchn_bind_ipi; struct evtchn_send; struct evtchn_alloc_unbound; struct evtchn_bind_interdomain; +struct evtchn_bind_vcpu; 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); @@ -31,5 +32,6 @@ 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); int xen_evtchn_bind_interdomain_op(struct evtchn_bind_interdomain *interdo= main); +int xen_evtchn_bind_vcpu_op(struct evtchn_bind_vcpu *vcpu); =20 #endif /* QEMU_XEN_EVTCHN_H */ diff --git a/target/i386/kvm/xen-emu.c b/target/i386/kvm/xen-emu.c index a07d1d39f3..ec7aefadfc 100644 --- a/target/i386/kvm/xen-emu.c +++ b/target/i386/kvm/xen-emu.c @@ -949,6 +949,18 @@ static bool kvm_xen_hcall_evtchn_op(struct kvm_xen_exi= t *exit, X86CPU *cpu, } break; } + case EVTCHNOP_bind_vcpu: { + struct evtchn_bind_vcpu vcpu; + + qemu_build_assert(sizeof(vcpu) =3D=3D 8); + if (kvm_copy_from_gva(cs, arg, &vcpu, sizeof(vcpu))) { + err =3D -EFAULT; + break; + } + + err =3D xen_evtchn_bind_vcpu_op(&vcpu); + break; + } default: return false; } --=20 2.39.0