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 38AF5C636D6 for ; Thu, 16 Feb 2023 09:47:20 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pSapv-0001jP-Fg; Thu, 16 Feb 2023 04:45:55 -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 1pSapA-0000BB-DN for qemu-devel@nongnu.org; Thu, 16 Feb 2023 04:45:08 -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 1pSap8-0006LL-HM for qemu-devel@nongnu.org; Thu, 16 Feb 2023 04:45:08 -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=xLkkRlpHG9JKYJBXjvVOkKqNbVuiZaxxdPWmCFIY5qE=; b=oeQZu6Q7LX3/GPKRMJO1+mfk8k qLdMsOvUqQ2mwMYOaEDMaWQSuNeaJSaCjtwW/OHCMxG8g35Npj+nudqgIyf/jP7mW7NvhnXRaa/JT D2ToFiyEQ97Azgh4LMiINhx7ye6tlvQ2Io07apZF/IqAqQYN6VjwXDqEnAdmEo2LfgUmk7Ns+1gBY FYjTyovg2JOf1yM4Uz79P6LHxA/zQ8d3gYO9rtIbHtHN4A0aVGpkDm92law8cotSjHM64d+U4fAYc tc4+a98lxci08oh3Sm2S5NxfxQeHWiCOLNepY4wgl3/07sOnhtIvNuNB9dV5iCbSvxrgk3IdlBEgW XQL+bzsA==; 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 1pSao3-00AEF7-1f; Thu, 16 Feb 2023 09:44:44 +0000 Received: from dwoodhou by i7.infradead.org with local (Exim 4.96 #2 (Red Hat Linux)) id 1pSaoj-0090CW-2C; Thu, 16 Feb 2023 09:44:41 +0000 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, Stefano Stabellini , vikram.garhwal@amd.com Subject: [RFC PATCH v11bis 20/26] hw/xen: Hook up emulated implementation for event channel operations Date: Thu, 16 Feb 2023 09:44:30 +0000 Message-Id: <20230216094436.2144978-21-dwmw2@infradead.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230216094436.2144978-1-dwmw2@infradead.org> References: <20230216094436.2144978-1-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+96e41a9b2a2966255e0b+7116+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 We provided the backend-facing evtchn functions very early on as part of the core Xen platform support, since things like timers and xenstore need to use them. By what may or may not be an astonishing coincidence, those functions just *happen* all to have exactly the right function prototypes to slot into the evtchn_backend_ops table and be called by the PV backends. Signed-off-by: David Woodhouse --- hw/i386/kvm/xen_evtchn.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/hw/i386/kvm/xen_evtchn.c b/hw/i386/kvm/xen_evtchn.c index 3f60461e5c..4442e3ab06 100644 --- a/hw/i386/kvm/xen_evtchn.c +++ b/hw/i386/kvm/xen_evtchn.c @@ -34,6 +34,7 @@ #include "hw/pci/msi.h" #include "hw/pci/msix.h" #include "hw/irq.h" +#include "hw/xen/xen_backend_ops.h" #include "xen_evtchn.h" #include "xen_overlay.h" @@ -278,6 +279,17 @@ static const TypeInfo xen_evtchn_info = { .class_init = xen_evtchn_class_init, }; +static struct evtchn_backend_ops emu_evtchn_backend_ops = { + .open = xen_be_evtchn_open, + .bind_interdomain = xen_be_evtchn_bind_interdomain, + .unbind = xen_be_evtchn_unbind, + .close = xen_be_evtchn_close, + .get_fd = xen_be_evtchn_fd, + .notify = xen_be_evtchn_notify, + .unmask = xen_be_evtchn_unmask, + .pending = xen_be_evtchn_pending, +}; + static void gsi_assert_bh(void *opaque) { struct vcpu_info *vi = kvm_xen_get_vcpu_info_hva(0); @@ -318,6 +330,9 @@ void xen_evtchn_create(void) s->nr_pirq_inuse_words = DIV_ROUND_UP(s->nr_pirqs, 64); s->pirq_inuse_bitmap = g_new0(uint64_t, s->nr_pirq_inuse_words); s->pirq = g_new0(struct pirq_info, s->nr_pirqs); + + /* Set event channel functions for backend drivers to use */ + xen_evtchn_ops = &emu_evtchn_backend_ops; } void xen_evtchn_connect_gsis(qemu_irq *system_gsis) -- 2.39.0