From patchwork Fri Nov 20 18:50:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 11921967 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B3657C64E7C for ; Fri, 20 Nov 2020 18:56:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 619B224124 for ; Fri, 20 Nov 2020 18:56:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="OGwTUoY0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732162AbgKTSzH (ORCPT ); Fri, 20 Nov 2020 13:55:07 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:41670 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732158AbgKTSzG (ORCPT ); Fri, 20 Nov 2020 13:55:06 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1605898505; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=4wp9YwTYGJnUKm2v8rubzSiDU/VoJ3Bb1DJ/6lk+2es=; b=OGwTUoY0ZbWHvLDtCRfDAfbzluKzXjFl+sTW/D3U57HC6gjuNIa59+ocRgwhUodCXxQNOI PeNkydEUr2mkKQV2k+PXNBTkL+CVQiRQE5oaAFCTLwGOMeL5Wt24Y0tpat1bgAjX+9SrG7 FSpfojOTUUnbCjoFmdg7M2MA94pdW4o= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-364-vhU3u-tTOGC90Zymqu4hTA-1; Fri, 20 Nov 2020 13:55:01 -0500 X-MC-Unique: vhU3u-tTOGC90Zymqu4hTA-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 951ED8030AD; Fri, 20 Nov 2020 18:54:58 +0000 (UTC) Received: from eperezma.remote.csb (ovpn-112-88.ams2.redhat.com [10.36.112.88]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7628E5C1D5; Fri, 20 Nov 2020 18:54:49 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Lars Ganrot , virtualization@lists.linux-foundation.org, Salil Mehta , "Michael S. Tsirkin" , Liran Alon , Rob Miller , Max Gurtovoy , Alex Barba , Stefan Hajnoczi , Jim Harford , Jason Wang , Harpreet Singh Anand , Christophe Fontaine , vm , Daniel Daly , Michael Lilja , Stefano Garzarella , Nitin Shrivastav , Lee Ballard , Dmytro Kazantsev , Juan Quintela , kvm@vger.kernel.org, Howard Cai , Xiao W Wang , Sean Mooney , Parav Pandit , Eli Cohen , Siwei Liu , Stephen Finucane Subject: [RFC PATCH 15/27] vhost: Do not invalidate signalled used Date: Fri, 20 Nov 2020 19:50:53 +0100 Message-Id: <20201120185105.279030-16-eperezma@redhat.com> In-Reply-To: <20201120185105.279030-1-eperezma@redhat.com> References: <20201120185105.279030-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Since we are in control of guest' VQ again, we can trust on it. Signed-off-by: Eugenio Pérez --- hw/virtio/vhost.c | 1 - 1 file changed, 1 deletion(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 304e0baa61..ac2bc14190 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -996,7 +996,6 @@ static void vhost_handle_call(EventNotifier *n) VirtQueue *vq = virtio_get_queue(vdev->vdev, idx); if (event_notifier_test_and_clear(n)) { - virtio_queue_invalidate_signalled_used(vdev->vdev, idx); virtio_notify_irqfd(vdev->vdev, vq); } }