From nobody Thu May 2 15:50:20 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=ispras.ru ARC-Seal: i=1; a=rsa-sha256; t=1617003880; cv=none; d=zohomail.com; s=zohoarc; b=CG1hENr2/ZqOl5g1oxe3xEk8ydAqSsoBrudtXpAZfdt53ouhR4EZogM0/8blEANdDvF0OrEwNHcHDIUN6cvoTKUS25BPTkVNYbyjeJx3CFsQPSko2Q+7svPQ/tO8PPLXnfjkT8uzrW39h8+dCAO6+aG170eBOXIJRREobPco+K0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1617003880; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:To; bh=6Iq3HHZtn2WVXKrCeE+Mej6DtPmAmC2FIjfpCPMJ+vI=; b=g5X22ewEHSlcwIsR1dOCSH4MwkEByP0EFCFarY4ICUbbZcLfKKHzSY77REeiMCSOmptKhbz9lRkRypBaagWYIyQfDn6nC9JP41HfAZ8I74EECO6hQh6G2AlgukwMIouOah67Ov3Lsf+f132FlizjFa9V8756ikmcjp8ARo3CvLE= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1617003880031759.3845705707793; Mon, 29 Mar 2021 00:44:40 -0700 (PDT) Received: from localhost ([::1]:37302 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lQmZj-0005v3-28 for importer@patchew.org; Mon, 29 Mar 2021 03:44:39 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56572) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lQmYN-0004kh-Il for qemu-devel@nongnu.org; Mon, 29 Mar 2021 03:43:15 -0400 Received: from mail.ispras.ru ([83.149.199.84]:54582) by eggs.gnu.org with esmtps (TLS1.2:DHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lQmYM-000433-01 for qemu-devel@nongnu.org; Mon, 29 Mar 2021 03:43:15 -0400 Received: from [127.0.1.1] (unknown [62.118.151.149]) by mail.ispras.ru (Postfix) with ESMTPSA id 5E4A640755CC; Mon, 29 Mar 2021 07:43:12 +0000 (UTC) Subject: [PATCH] hw/virtio: enable ioeventfd configuring for mmio From: Pavel Dovgalyuk To: qemu-devel@nongnu.org Date: Mon, 29 Mar 2021 10:43:12 +0300 Message-ID: <161700379211.1135943.8859209566937991305.stgit@pasha-ThinkPad-X280> User-Agent: StGit/0.23 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable 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+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=83.149.199.84; envelope-from=pavel.dovgalyuk@ispras.ru; helo=mail.ispras.ru X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alex.bennee@linaro.org, pbonzini@redhat.com, pavel.dovgalyuk@ispras.ru, mst@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" This patch adds ioeventfd flag for virtio-mmio configuration. It allows switching ioeventfd on and off. Signed-off-by: Pavel Dovgalyuk --- hw/virtio/virtio-mmio.c | 11 ++++++++++- include/hw/virtio/virtio-mmio.h | 5 +++++ 2 files changed, 15 insertions(+), 1 deletion(-) diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c index 342c918ea7..5952471b38 100644 --- a/hw/virtio/virtio-mmio.c +++ b/hw/virtio/virtio-mmio.c @@ -36,7 +36,9 @@ =20 static bool virtio_mmio_ioeventfd_enabled(DeviceState *d) { - return kvm_eventfds_enabled(); + VirtIOMMIOProxy *proxy =3D VIRTIO_MMIO(d); + + return (proxy->flags & VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD) !=3D 0; } =20 static int virtio_mmio_ioeventfd_assign(DeviceState *d, @@ -720,6 +722,8 @@ static Property virtio_mmio_properties[] =3D { DEFINE_PROP_BOOL("format_transport_address", VirtIOMMIOProxy, format_transport_address, true), DEFINE_PROP_BOOL("force-legacy", VirtIOMMIOProxy, legacy, true), + DEFINE_PROP_BIT("ioeventfd", VirtIOMMIOProxy, flags, + VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD_BIT, true), DEFINE_PROP_END_OF_LIST(), }; =20 @@ -731,6 +735,11 @@ static void virtio_mmio_realizefn(DeviceState *d, Erro= r **errp) qbus_create_inplace(&proxy->bus, sizeof(proxy->bus), TYPE_VIRTIO_MMIO_= BUS, d, NULL); sysbus_init_irq(sbd, &proxy->irq); + + if (!kvm_eventfds_enabled()) { + proxy->flags &=3D ~VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD; + } + if (proxy->legacy) { memory_region_init_io(&proxy->iomem, OBJECT(d), &virtio_legacy_mem_ops, proxy, diff --git a/include/hw/virtio/virtio-mmio.h b/include/hw/virtio/virtio-mmi= o.h index d4c4c386ab..090f7730e7 100644 --- a/include/hw/virtio/virtio-mmio.h +++ b/include/hw/virtio/virtio-mmio.h @@ -49,12 +49,17 @@ typedef struct VirtIOMMIOQueue { uint32_t used[2]; } VirtIOMMIOQueue; =20 +#define VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD_BIT 1 +#define VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD \ + (1 << VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD_BIT) + struct VirtIOMMIOProxy { /* Generic */ SysBusDevice parent_obj; MemoryRegion iomem; qemu_irq irq; bool legacy; + uint32_t flags; /* Guest accessible state needing migration and reset */ uint32_t host_features_sel; uint32_t guest_features_sel;