From mboxrd@z Thu Jan 1 00:00:00 1970 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 11C8BC4332F for ; Fri, 16 Dec 2022 00:55:56 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1p5yp1-0007L6-UT; Thu, 15 Dec 2022 19:43:32 -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 1p5yoI-0006Hr-RP for qemu-devel@nongnu.org; Thu, 15 Dec 2022 19:42:48 -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 1p5yoG-0006qX-Ty for qemu-devel@nongnu.org; Thu, 15 Dec 2022 19:42:46 -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=XOS94y+zWLXZf2qYe14xYzCnPgFXWDv3X0NFxPO3IWA=; b=bVbQXgvpfXzIgdNvwwbvIaJM8d MU3WvpJgGBQOcApnsDVEU2qeHatYEvTxH+J0dgyJPGP6qCzBX5HpndVvrn+EpukK1MHDevVP0k5G/ //04XUwb/8iSnGmDQRAdo0E84WwH8RWCOzRqZ3xCa9f/CGXBW1VV9Ex3nYcZ+WUpvFwTl2NA/TKl4 r6HAHKroltUTjRIr8Hmg95raHau5oYWDnYIQGEnf7ErI4LY0+e3QBnYsAu+urgO5/G+E3VavRhd0/ YhTFUVKXrrDmqby1FbumYL7MPHPT24WpTIO+8WwuipIKJ1KbbMhACteHeNEdy7mAUQVqDsvBXLhZi 5uxWTn6w==; 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 1p5ymy-00Azyz-1g; Fri, 16 Dec 2022 00:42:28 +0000 Received: from dwoodhou by i7.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1p5ymw-003cQG-G3; Fri, 16 Dec 2022 00:41:22 +0000 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 34/38] hw/xen: Implement EVTCHNOP_reset Date: Fri, 16 Dec 2022 00:41:13 +0000 Message-Id: <20221216004117.862106-35-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: 8bit 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+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+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 | 24 ++++++++++++++++++++++++ hw/i386/kvm/xen_evtchn.h | 2 ++ target/i386/kvm/xen-emu.c | 12 ++++++++++++ 3 files changed, 38 insertions(+) diff --git a/hw/i386/kvm/xen_evtchn.c b/hw/i386/kvm/xen_evtchn.c index 8cdc26afb7..225d984371 100644 --- a/hw/i386/kvm/xen_evtchn.c +++ b/hw/i386/kvm/xen_evtchn.c @@ -643,6 +643,30 @@ static int close_port(XenEvtchnState *s, evtchn_port_t port) return 0; } +int xen_evtchn_reset_op(struct evtchn_reset *reset) +{ + XenEvtchnState *s = xen_evtchn_singleton; + int i; + + if (!s) { + return -ENOTSUP; + } + + if (reset->dom != DOMID_SELF && reset->dom != xen_domid) { + return -ESRCH; + } + + qemu_mutex_lock(&s->port_lock); + + for (i = 0; i < s->nr_ports; i++) { + close_port(s, i); + } + + qemu_mutex_unlock(&s->port_lock); + + return 0; +} + int xen_evtchn_close_op(struct evtchn_close *close) { XenEvtchnState *s = xen_evtchn_singleton; diff --git a/hw/i386/kvm/xen_evtchn.h b/hw/i386/kvm/xen_evtchn.h index 99d5292c1e..b93f534bee 100644 --- a/hw/i386/kvm/xen_evtchn.h +++ b/hw/i386/kvm/xen_evtchn.h @@ -22,6 +22,7 @@ struct evtchn_send; struct evtchn_alloc_unbound; struct evtchn_bind_interdomain; struct evtchn_bind_vcpu; +struct evtchn_reset; 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); @@ -31,3 +32,4 @@ 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 *interdomain); int xen_evtchn_bind_vcpu_op(struct evtchn_bind_vcpu *vcpu); +int xen_evtchn_reset_op(struct evtchn_reset *reset); diff --git a/target/i386/kvm/xen-emu.c b/target/i386/kvm/xen-emu.c index 58fa82682f..055afba627 100644 --- a/target/i386/kvm/xen-emu.c +++ b/target/i386/kvm/xen-emu.c @@ -854,6 +854,18 @@ static bool kvm_xen_hcall_evtchn_op(struct kvm_xen_exit *exit, X86CPU *cpu, err = xen_evtchn_bind_vcpu_op(&vcpu); break; } + case EVTCHNOP_reset: { + struct evtchn_reset reset; + + qemu_build_assert(sizeof(reset) == 2); + if (kvm_copy_from_gva(cs, arg, &reset, sizeof(reset))) { + err = -EFAULT; + break; + } + + err = xen_evtchn_reset_op(&reset); + break; + } default: return false; } -- 2.35.3