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 X-Spam-Level: X-Spam-Status: No, score=-9.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 62DB4C63697 for ; Fri, 13 Nov 2020 13:48:52 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0D8FD2223F for ; Fri, 13 Nov 2020 13:48:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="iNYqzrfW" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0D8FD2223F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=virtualization-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id D7BF187483; Fri, 13 Nov 2020 13:48:51 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id n8Dq-NSVHk8Q; Fri, 13 Nov 2020 13:48:51 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by fraxinus.osuosl.org (Postfix) with ESMTP id 5B6228745B; Fri, 13 Nov 2020 13:48:51 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 409C1C0891; Fri, 13 Nov 2020 13:48:51 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 2340DC0800 for ; Fri, 13 Nov 2020 13:48:50 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id F209E20439 for ; Fri, 13 Nov 2020 13:48:49 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id N7f5QysLEv+r for ; Fri, 13 Nov 2020 13:48:49 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [63.128.21.124]) by silver.osuosl.org (Postfix) with ESMTPS id 20FBF204A1 for ; Fri, 13 Nov 2020 13:48:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1605275328; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=QUWlJHRXTci3OE9aKsACoxuZyffR9CQAnZGBUFnY9/4=; b=iNYqzrfWSyJsvejltqTNdRkTViybijLRqPF4h0YqUzoUpsIQMyhNrudPP3o24TOvpaDDQQ 17e78ER5dCjCJF+ncVFE+xMZva0xLQX2JZuT9xRf45vnF6q9rCzq2wm+/BcSyBQni5wPyo gcaS/EfD1+qQMBBJ569IO49Xn6ov8eY= 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-64-Q5dfMm2JN-uBAE7tf67S5Q-1; Fri, 13 Nov 2020 08:48:45 -0500 X-MC-Unique: Q5dfMm2JN-uBAE7tf67S5Q-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id CD6F31084C96; Fri, 13 Nov 2020 13:48:44 +0000 (UTC) Received: from steredhat.redhat.com (ovpn-114-21.ams2.redhat.com [10.36.114.21]) by smtp.corp.redhat.com (Postfix) with ESMTP id 064605D9F3; Fri, 13 Nov 2020 13:48:42 +0000 (UTC) From: Stefano Garzarella To: virtualization@lists.linux-foundation.org Subject: [PATCH RFC 10/12] vdpa_sim: split vdpasim_virtqueue's iov field in riov and wiov Date: Fri, 13 Nov 2020 14:47:10 +0100 Message-Id: <20201113134712.69744-11-sgarzare@redhat.com> In-Reply-To: <20201113134712.69744-1-sgarzare@redhat.com> References: <20201113134712.69744-1-sgarzare@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Cc: Laurent Vivier , Max Gurtovoy , "Michael S. Tsirkin" , linux-kernel@vger.kernel.org, Stefan Hajnoczi , Eli Cohen X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" vringh_getdesc_iotlb() manages 2 iovs for writable and readable descriptors. This is very useful for the block device, where for each request we have both types of descriptor. Let's split the vdpasim_virtqueue's iov field in riov and wiov to use them with vringh_getdesc_iotlb(). Signed-off-by: Stefano Garzarella --- drivers/vdpa/vdpa_sim/vdpa_sim.h | 3 ++- drivers/vdpa/vdpa_sim/vdpa_sim_blk.c | 6 +++--- drivers/vdpa/vdpa_sim/vdpa_sim_net.c | 8 ++++---- 3 files changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.h b/drivers/vdpa/vdpa_sim/vdpa_sim.h index cc21e07aa2f7..0d4629675e4b 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.h +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.h @@ -27,7 +27,8 @@ struct vdpasim; struct vdpasim_virtqueue { struct vringh vring; - struct vringh_kiov iov; + struct vringh_kiov riov; + struct vringh_kiov wiov; unsigned short head; bool ready; u64 desc_addr; diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c index 122a3c039507..8e41b3ab98d5 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c @@ -41,13 +41,13 @@ static void vdpasim_blk_work(struct work_struct *work) if (!vq->ready) continue; - while (vringh_getdesc_iotlb(&vq->vring, &vq->iov, &vq->iov, + while (vringh_getdesc_iotlb(&vq->vring, &vq->riov, &vq->wiov, &vq->head, GFP_ATOMIC) > 0) { int write; - vq->iov.i = vq->iov.used - 1; - write = vringh_iov_push_iotlb(&vq->vring, &vq->iov, &status, 1); + vq->wiov.i = vq->wiov.used - 1; + write = vringh_iov_push_iotlb(&vq->vring, &vq->wiov, &status, 1); if (write <= 0) break; diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c index d0a1403f64b2..783b1e85b09c 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c @@ -47,12 +47,12 @@ static void vdpasim_net_work(struct work_struct *work) while (true) { total_write = 0; - err = vringh_getdesc_iotlb(&txq->vring, &txq->iov, NULL, + err = vringh_getdesc_iotlb(&txq->vring, &txq->riov, NULL, &txq->head, GFP_ATOMIC); if (err <= 0) break; - err = vringh_getdesc_iotlb(&rxq->vring, NULL, &rxq->iov, + err = vringh_getdesc_iotlb(&rxq->vring, NULL, &rxq->wiov, &rxq->head, GFP_ATOMIC); if (err <= 0) { vringh_complete_iotlb(&txq->vring, txq->head, 0); @@ -60,13 +60,13 @@ static void vdpasim_net_work(struct work_struct *work) } while (true) { - read = vringh_iov_pull_iotlb(&txq->vring, &txq->iov, + read = vringh_iov_pull_iotlb(&txq->vring, &txq->riov, vdpasim->buffer, PAGE_SIZE); if (read <= 0) break; - write = vringh_iov_push_iotlb(&rxq->vring, &rxq->iov, + write = vringh_iov_push_iotlb(&rxq->vring, &rxq->wiov, vdpasim->buffer, read); if (write <= 0) break; -- 2.26.2 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization