From patchwork Sat Jan 28 08:10:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Woodhouse X-Patchwork-Id: 13119761 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 280D1C27C76 for ; Sat, 28 Jan 2023 08:17:54 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pLgKf-00006c-2e; Sat, 28 Jan 2023 03:13:05 -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 1pLgJS-0005ua-Cn for qemu-devel@nongnu.org; Sat, 28 Jan 2023 03:11:52 -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 1pLgJL-0007qn-Ke for qemu-devel@nongnu.org; Sat, 28 Jan 2023 03:11:50 -0500 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=72Ty7J9b//OCHbCYfu8LLmw08zlBnyL3Fjj5Lp0vFvo=; b=UZ+Q71DCr6fBMhgnjEXFaw0IPL JL9lOFRQQ8VNRya2quEesvxzQv5wwlbor951xkmBGV/X68vtyYfm9Y3UF9F3fpsPQnC9WzXUF8YX5 xQBdzkOz3U4Ai9/pYDIw7t3KMZsYjr9UBqYnnC/E4fMY7l2bg2tzMzFFWit4S1XBoM9DOEH/eu6IP 6IPHi8jKlleArXn+6aw486vcA4f61gS/PFeSHGuahv6VGH/1XvNGuvsfnWMmjk6ddEkqh0pmb87f8 TVdNa8P1ZJgNW0tUoi3mX1T8vCYhYUhNNTH40m1OTFCqTE8IXwORcjbSrn97IXTSGSPKFjyBoE5rD AYbFDSaw==; 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 1pLgIR-0039wS-2S; Sat, 28 Jan 2023 08:10:53 +0000 Received: from dwoodhou by i7.infradead.org with local (Exim 4.96 #2 (Red Hat Linux)) id 1pLgIx-006mJt-2K; Sat, 28 Jan 2023 08:11:19 +0000 From: David Woodhouse To: Peter Maydell , qemu-devel@nongnu.org Cc: Paolo Bonzini , Paul Durrant , Joao Martins , Ankur Arora , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , Thomas Huth , =?utf-8?q?Alex_Benn=C3=A9e?= , Juan Quintela , "Dr . David Alan Gilbert" , Claudio Fontana , Julien Grall , "Michael S. Tsirkin" , Marcel Apfelbaum , armbru@redhat.com Subject: [PATCH v9 34/58] hw/xen: Implement EVTCHNOP_alloc_unbound Date: Sat, 28 Jan 2023 08:10:49 +0000 Message-Id: <20230128081113.1615111-35-dwmw2@infradead.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230128081113.1615111-1-dwmw2@infradead.org> References: <20230128081113.1615111-1-dwmw2@infradead.org> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by desiato.infradead.org. See http://www.infradead.org/rpr.html Received-SPF: none client-ip=2001:8b0:10b:1:d65d:64ff:fe57:4e05; envelope-from=BATV+e8fc867402dd322853dc+7097+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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: David Woodhouse Signed-off-by: David Woodhouse --- 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 e0e5b51e79..fa1d3a04f2 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; } +int xen_evtchn_alloc_unbound_op(struct evtchn_alloc_unbound *alloc) +{ + XenEvtchnState *s = xen_evtchn_singleton; + uint16_t type_val; + int ret; + + if (!s) { + return -ENOTSUP; + } + + if (alloc->dom != DOMID_SELF && alloc->dom != xen_domid) { + return -ESRCH; + } + + if (alloc->remote_dom == DOMID_QEMU) { + type_val = PORT_INFO_TYPEVAL_REMOTE_QEMU; + } else if (alloc->remote_dom == DOMID_SELF || + alloc->remote_dom == xen_domid) { + type_val = 0; + } else { + return -EPERM; + } + + qemu_mutex_lock(&s->port_lock); + + ret = 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 = 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); #endif /* QEMU_XEN_EVTCHN_H */ diff --git a/target/i386/kvm/xen-emu.c b/target/i386/kvm/xen-emu.c index f6b5a23f79..e8486913bd 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_exit *exit, X86CPU *cpu, err = xen_evtchn_send_op(&send); break; } + case EVTCHNOP_alloc_unbound: { + struct evtchn_alloc_unbound alloc; + + qemu_build_assert(sizeof(alloc) == 8); + if (kvm_copy_from_gva(cs, arg, &alloc, sizeof(alloc))) { + err = -EFAULT; + break; + } + + err = xen_evtchn_alloc_unbound_op(&alloc); + if (!err && kvm_copy_to_gva(cs, arg, &alloc, sizeof(alloc))) { + err = -EFAULT; + } + break; + } default: return false; }