From patchwork Tue Aug 2 14:39:08 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 1663055 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=H+5cCnYx; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4LxyNH1kRKz9sB4 for ; Wed, 3 Aug 2022 00:41:01 +1000 (AEST) Received: from localhost ([::1]:35350 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oIt4s-0001bE-2k for incoming@patchwork.ozlabs.org; Tue, 02 Aug 2022 10:40:58 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52712) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oIt3H-0001Wx-KN for qemu-devel@nongnu.org; Tue, 02 Aug 2022 10:39:23 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:60981) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oIt3E-0008OJ-Ck for qemu-devel@nongnu.org; Tue, 02 Aug 2022 10:39:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1659451153; 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; bh=pq81qrcxaVOSuZOc9tmAKRqIwfuk/zneM3W8NVnQJUU=; b=H+5cCnYxd/ce9youDQXG3HJzBaPYAxYzGom4MX5tCdVEI0lDPNPsu6+XeVdMgEfv2vMo2K xAJ71RzM+a6IzwSVis1DWmN4jX26PqjHwfB9yNAFUr52Yg/T9ubznpv2lECV4fzEjdK5KN sPPvj5j6RogeIPbiow3re2bFLTTT2UE= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-447-6MuN4OfGN3SFvl4cpOOeUw-1; Tue, 02 Aug 2022 10:39:11 -0400 X-MC-Unique: 6MuN4OfGN3SFvl4cpOOeUw-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id A3735801231 for ; Tue, 2 Aug 2022 14:39:11 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.193.7]) by smtp.corp.redhat.com (Postfix) with ESMTP id DF8C82166B26; Tue, 2 Aug 2022 14:39:10 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Jason Wang , "Michael S. Tsirkin" Subject: [PATCH] vdpa: do not save failed dma maps in SVQ iova tree Date: Tue, 2 Aug 2022 16:39:08 +0200 Message-Id: <20220802143908.274364-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 Received-SPF: pass client-ip=170.10.129.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" If a map fails for whatever reason, it must not be saved in the tree. Otherwise, qemu will try to unmap it in cleanup, leaving to more errors. Fixes: 34e3c94eda ("vdpa: Add custom IOTLB translations to SVQ") Signed-off-by: Eugenio Pérez Reported-by: Lei Yang --- hw/virtio/vhost-vdpa.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 3ff9ce3501..e44c23dce5 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -176,6 +176,7 @@ static void vhost_vdpa_listener_commit(MemoryListener *listener) static void vhost_vdpa_listener_region_add(MemoryListener *listener, MemoryRegionSection *section) { + DMAMap mem_region = {}; struct vhost_vdpa *v = container_of(listener, struct vhost_vdpa, listener); hwaddr iova; Int128 llend, llsize; @@ -212,13 +213,13 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, llsize = int128_sub(llend, int128_make64(iova)); if (v->shadow_vqs_enabled) { - DMAMap mem_region = { - .translated_addr = (hwaddr)(uintptr_t)vaddr, - .size = int128_get64(llsize) - 1, - .perm = IOMMU_ACCESS_FLAG(true, section->readonly), - }; + int r; - int r = vhost_iova_tree_map_alloc(v->iova_tree, &mem_region); + mem_region.translated_addr = (hwaddr)(uintptr_t)vaddr, + mem_region.size = int128_get64(llsize) - 1, + mem_region.perm = IOMMU_ACCESS_FLAG(true, section->readonly), + + r = vhost_iova_tree_map_alloc(v->iova_tree, &mem_region); if (unlikely(r != IOVA_OK)) { error_report("Can't allocate a mapping (%d)", r); goto fail; @@ -232,11 +233,16 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener, vaddr, section->readonly); if (ret) { error_report("vhost vdpa map fail!"); - goto fail; + goto fail_map; } return; +fail_map: + if (v->shadow_vqs_enabled) { + vhost_iova_tree_remove(v->iova_tree, &mem_region); + } + fail: /* * On the initfn path, store the first error in the container so we