From patchwork Thu Jan 28 14:41:23 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Garzarella X-Patchwork-Id: 12053801 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=-16.0 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 48636C433DB for ; Thu, 28 Jan 2021 14:45:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F209564DEE for ; Thu, 28 Jan 2021 14:45:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231803AbhA1Oo1 (ORCPT ); Thu, 28 Jan 2021 09:44:27 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:53423 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231877AbhA1OoF (ORCPT ); Thu, 28 Jan 2021 09:44:05 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1611844958; 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=g3g1OmTgyQKpO44PG/KohyJWQoMIoCRfwQDA6iGRUjI=; b=CvebcFefNLFNjw6t4rklmexZYNBq6MMnAtGka1JADuz6mR9IZfPxXhApbNVhwNglBO6Qc+ 3tSltNROupVylicdoLa/JOg+vFrOxrWPNGkePZgIddXl3yXtFb04iHwiEejEal61vV1DLn Wpxfnsu2JzLBBFdxHMEAN+snarDz33o= 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-12-eVSp1GIAMzW-og4lhkqnbw-1; Thu, 28 Jan 2021 09:42:36 -0500 X-MC-Unique: eVSp1GIAMzW-og4lhkqnbw-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 45580107ACF5; Thu, 28 Jan 2021 14:42:35 +0000 (UTC) Received: from steredhat.redhat.com (ovpn-113-219.ams2.redhat.com [10.36.113.219]) by smtp.corp.redhat.com (Postfix) with ESMTP id A45D06267D; Thu, 28 Jan 2021 14:42:29 +0000 (UTC) From: Stefano Garzarella To: virtualization@lists.linux-foundation.org Cc: Xie Yongji , "Michael S. Tsirkin" , Stefano Garzarella , Laurent Vivier , Stefan Hajnoczi , linux-kernel@vger.kernel.org, Max Gurtovoy , Jason Wang , kvm@vger.kernel.org Subject: [PATCH RFC v2 06/10] vdpa_sim: cleanup kiovs in vdpasim_free() Date: Thu, 28 Jan 2021 15:41:23 +0100 Message-Id: <20210128144127.113245-7-sgarzare@redhat.com> In-Reply-To: <20210128144127.113245-1-sgarzare@redhat.com> References: <20210128144127.113245-1-sgarzare@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org vringh_getdesc_iotlb() allocates memory to store the kvec, that is freed with vringh_kiov_cleanup(). vringh_getdesc_iotlb() is able to reuse a kvec previously allocated, so in order to avoid to allocate the kvec for each request, we are not calling vringh_kiov_cleanup() when we finished to handle a request, but we should call it when we free the entire device. Signed-off-by: Stefano Garzarella Acked-by: Jason Wang --- drivers/vdpa/vdpa_sim/vdpa_sim.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c index 53238989713d..a7aeb5d01c3e 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c @@ -562,8 +562,15 @@ static int vdpasim_dma_unmap(struct vdpa_device *vdpa, u64 iova, u64 size) static void vdpasim_free(struct vdpa_device *vdpa) { struct vdpasim *vdpasim = vdpa_to_sim(vdpa); + int i; cancel_work_sync(&vdpasim->work); + + for (i = 0; i < vdpasim->dev_attr.nvqs; i++) { + vringh_kiov_cleanup(&vdpasim->vqs[i].out_iov); + vringh_kiov_cleanup(&vdpasim->vqs[i].in_iov); + } + put_iova_domain(&vdpasim->iova); iova_cache_put(); kvfree(vdpasim->buffer);