From patchwork Tue Feb 8 13:38:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 12738931 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 90F90C433F5 for ; Tue, 8 Feb 2022 15:51:45 +0000 (UTC) Received: from localhost ([::1]:45224 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nHSmO-0005qq-Iz for qemu-devel@archiver.kernel.org; Tue, 08 Feb 2022 10:51:44 -0500 Received: from eggs.gnu.org ([209.51.188.92]:37002) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nHQj1-0003Wl-4l for qemu-devel@nongnu.org; Tue, 08 Feb 2022 08:40:07 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:59272) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nHQiz-0005aG-9e for qemu-devel@nongnu.org; Tue, 08 Feb 2022 08:40:06 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1644327604; 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=Yc6fhg/gCTgOjcDrLGk+J+NYj/1PBgJNJGmm2VzDPsY=; b=LP7KB49VdWH+/5r70thrp/ONddfGtL6eC3DrGER/qxZ9HSt6idwagOsH/jAGuDdX8FiAQt NF7fWCqg6rHsNw8NvBT5dqohrksvVenQR2153YofmHqzEkjOf4VfJLOsXYsh9jNt3d0R8o cXJBOZSpMMgWFWH+R4M9RnM1N7vjGg8= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-674-mG1mJa-ZMMSMJXVS3GZE3A-1; Tue, 08 Feb 2022 08:40:01 -0500 X-MC-Unique: mG1mJa-ZMMSMJXVS3GZE3A-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 6563A84DA4C; Tue, 8 Feb 2022 13:40:00 +0000 (UTC) Received: from laptop.redhat.com (unknown [10.39.195.249]) by smtp.corp.redhat.com (Postfix) with ESMTP id D1B0B4F850; Tue, 8 Feb 2022 13:39:57 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, stefanb@linux.vnet.ibm.com, qemu-devel@nongnu.org, alex.williamson@redhat.com Subject: [PATCH v4 2/2] hw/vfio/common: Silence ram device offset alignment error traces Date: Tue, 8 Feb 2022 14:38:42 +0100 Message-Id: <20220208133842.112017-3-eric.auger@redhat.com> In-Reply-To: <20220208133842.112017-1-eric.auger@redhat.com> References: <20220208133842.112017-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eric.auger@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=170.10.133.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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: , Cc: quintela@redhat.com, cohuck@redhat.com, f4bug@amsat.org, dgilbert@redhat.com, imammedo@redhat.com, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Failing to DMA MAP a ram_device should not cause an error message. This is currently happening with the TPM CRB command region and this is causing confusion. We may want to keep the trace for debug purpose though. Signed-off-by: Eric Auger Tested-by: Stefan Berger Acked-by: Alex Williamson Acked-by: Stefan Berger Signed-off-by: Philippe Mathieu-Daudé --- v3 -> v4: - s/PRIx64/PRIxPTR for qemu_real_host_page_mask --- hw/vfio/common.c | 15 ++++++++++++++- hw/vfio/trace-events | 1 + 2 files changed, 15 insertions(+), 1 deletion(-) diff --git a/hw/vfio/common.c b/hw/vfio/common.c index 080046e3f51..5fbeed06f2f 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -884,7 +884,20 @@ static void vfio_listener_region_add(MemoryListener *listener, if (unlikely((section->offset_within_address_space & ~qemu_real_host_page_mask) != (section->offset_within_region & ~qemu_real_host_page_mask))) { - error_report("%s received unaligned region", __func__); + if (memory_region_is_ram_device(section->mr)) { /* just debug purpose */ + trace_vfio_listener_region_add_bad_offset_alignment( + memory_region_name(section->mr), + section->offset_within_address_space, + section->offset_within_region, qemu_real_host_page_size); + } else { /* error case we don't want to be fatal */ + error_report("%s received unaligned region %s iova=0x%"PRIx64 + " offset_within_region=0x%"PRIx64 + " qemu_real_host_page_mask=0x%"PRIxPTR, + __func__, memory_region_name(section->mr), + section->offset_within_address_space, + section->offset_within_region, + qemu_real_host_page_mask); + } return; } diff --git a/hw/vfio/trace-events b/hw/vfio/trace-events index 0ef1b5f4a65..48e1ea1be76 100644 --- a/hw/vfio/trace-events +++ b/hw/vfio/trace-events @@ -100,6 +100,7 @@ vfio_listener_region_add_skip(uint64_t start, uint64_t end) "SKIPPING region_add vfio_spapr_group_attach(int groupfd, int tablefd) "Attached groupfd %d to liobn fd %d" vfio_listener_region_add_iommu(uint64_t start, uint64_t end) "region_add [iommu] 0x%"PRIx64" - 0x%"PRIx64 vfio_listener_region_add_ram(uint64_t iova_start, uint64_t iova_end, void *vaddr) "region_add [ram] 0x%"PRIx64" - 0x%"PRIx64" [%p]" +vfio_listener_region_add_bad_offset_alignment(const char *name, uint64_t iova, uint64_t offset_within_region, uint64_t page_size) "Region \"%s\" @0x%"PRIx64", offset_within_region=0x%"PRIx64", qemu_real_host_page_mask=0x%"PRIxPTR " cannot be mapped for DMA" vfio_listener_region_add_no_dma_map(const char *name, uint64_t iova, uint64_t size, uint64_t page_size) "Region \"%s\" 0x%"PRIx64" size=0x%"PRIx64" is not aligned to 0x%"PRIx64" and cannot be mapped for DMA" vfio_listener_region_del_skip(uint64_t start, uint64_t end) "SKIPPING region_del 0x%"PRIx64" - 0x%"PRIx64 vfio_listener_region_del(uint64_t start, uint64_t end) "region_del 0x%"PRIx64" - 0x%"PRIx64