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=-9.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 E4F00C388F7 for ; Fri, 13 Nov 2020 13:48:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AFB802223F for ; Fri, 13 Nov 2020 13:48:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="BWRcB+LE" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726841AbgKMNsx (ORCPT ); Fri, 13 Nov 2020 08:48:53 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:58525 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726692AbgKMNsq (ORCPT ); Fri, 13 Nov 2020 08:48:46 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1605275325; 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=Xii9EkSNI++swzQsAddzZFhZQHEvE4PS5MaY9kGEHbw=; b=BWRcB+LEGOc0ue8jUP7QwWPs67BR7PF4VqVu4KJeOuudDGMhlH/mXDFJVOHOdM88QcZNAZ GHA6dE/Dtn9Nkqk4WU4aArWBD4WQqTkdp5KQXr53Iodbsf8UVM94VXB4Jjk2WLyCbriWo7 uQf/D1R2J9q6bAGiKMYPgaRylg36APg= 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-29-c_y0XwUIOzK2hbMJV5l9Pw-1; Fri, 13 Nov 2020 08:48:43 -0500 X-MC-Unique: c_y0XwUIOzK2hbMJV5l9Pw-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 9EDED8030A0; Fri, 13 Nov 2020 13:48:42 +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 C57C55D9F3; Fri, 13 Nov 2020 13:48:40 +0000 (UTC) From: Stefano Garzarella To: virtualization@lists.linux-foundation.org Cc: Stefan Hajnoczi , Laurent Vivier , linux-kernel@vger.kernel.org, Eli Cohen , Jason Wang , "Michael S. Tsirkin" , Max Gurtovoy Subject: [PATCH RFC 09/12] vdpa_sim: make vdpasim->buffer size configurable Date: Fri, 13 Nov 2020 14:47:09 +0100 Message-Id: <20201113134712.69744-10-sgarzare@redhat.com> In-Reply-To: <20201113134712.69744-1-sgarzare@redhat.com> References: <20201113134712.69744-1-sgarzare@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Allow each device to specify the size of the buffer allocated in vdpa_sim. Signed-off-by: Stefano Garzarella --- drivers/vdpa/vdpa_sim/vdpa_sim.h | 1 + drivers/vdpa/vdpa_sim/vdpa_sim.c | 2 +- drivers/vdpa/vdpa_sim/vdpa_sim_blk.c | 1 + drivers/vdpa/vdpa_sim/vdpa_sim_net.c | 1 + 4 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.h b/drivers/vdpa/vdpa_sim/vdpa_sim.h index f7e1fe0a88d3..cc21e07aa2f7 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.h +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.h @@ -49,6 +49,7 @@ struct vdpasim_device { struct vdpasim_init_attr { struct vdpasim_device device; + size_t buffer_size; int batch_mapping; work_func_t work_fn; diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c index bd034fbf4683..3863d49e0d6d 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c @@ -223,7 +223,7 @@ struct vdpasim *vdpasim_create(struct vdpasim_init_attr *attr) if (!vdpasim->iommu) goto err_iommu; - vdpasim->buffer = kvmalloc(PAGE_SIZE, GFP_KERNEL); + vdpasim->buffer = kvmalloc(attr->buffer_size, GFP_KERNEL); if (!vdpasim->buffer) goto err_iommu; diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c index f456a0e4e097..122a3c039507 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c @@ -100,6 +100,7 @@ static int __init vdpasim_blk_init(void) attr.device.update_config = vdpasim_blk_update_config; attr.work_fn = vdpasim_blk_work; + attr.buffer_size = PAGE_SIZE; vdpasim_blk_dev = vdpasim_create(&attr); if (IS_ERR(vdpasim_blk_dev)) { diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c index b9372fdf2415..d0a1403f64b2 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim_net.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim_net.c @@ -124,6 +124,7 @@ static int __init vdpasim_net_init(void) attr.work_fn = vdpasim_net_work; attr.batch_mapping = batch_mapping; + attr.buffer_size = PAGE_SIZE; vdpasim_net_dev = vdpasim_create(&attr); if (IS_ERR(vdpasim_net_dev)) { -- 2.26.2