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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 7CA0BC10DCE for ; Wed, 18 Mar 2020 11:38:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 44C0020771 for ; Wed, 18 Mar 2020 11:38:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="oif1guY3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726905AbgCRLiX (ORCPT ); Wed, 18 Mar 2020 07:38:23 -0400 Received: from mail-ot1-f41.google.com ([209.85.210.41]:36222 "EHLO mail-ot1-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726855AbgCRLiX (ORCPT ); Wed, 18 Mar 2020 07:38:23 -0400 Received: by mail-ot1-f41.google.com with SMTP id 39so9699197otu.3 for ; Wed, 18 Mar 2020 04:38:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to:cc; bh=eTyhRpsbG0kZyPAzv+dy/wYvyIITKWnTbwXBIUvSGbA=; b=oif1guY36swCU6CoNPFUeyKB4o5nBLKMzDm2eVFyaDdoJH4PfPpT2Va1c3TmAQfBYk iwIeIlHlLLsZ7ETT+LDvhBffsGUH3WzQJ+RrdMwIQSRSiDmetyEv0FBqdZjYS/s5B/q6 hPAeEFTiX0ZJTeRGlOcMOhekdvEVBWRsZizjIsTGQrZwNWLcLtNeeslBXjhvbsJ7XjK3 dVZZQS03D7w/StpJm2+/aCa0vIdyOc+le1P3gNvDm0Iv2SqSasHkNVjUpkIKxuCADOMJ 4f9feGDgKpTARbyZRRB3h5Pb1yHFzIUEezU0eSBQZ7my7HvJci4GBVCByIHh3L7p2mOf d3UQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=eTyhRpsbG0kZyPAzv+dy/wYvyIITKWnTbwXBIUvSGbA=; b=l/7wlp6UVoAKD4LfC4HWk/STafYHHs3W4TQ+9/1pOqanVl/QRB6CmhWxeIDtQU4IC/ gB0ZmPNbvxXocjaJ318/O95CcQt5xDuUGaJyGiB2AA8nen9Mok91TtGNpc8ER5v6tMNX X9D1f76fkIsEC0wMqeyQoNxlI3k+mOYpHNdO5G7i9ytpnQFI5RqgXONtz5kqhOe7JupH nq9nxvlXcZcLGXdiSx0cjW4FohfX/06QBEt8eQU0TzFarq3Stk8oHNwnBbsafrJSzQzG PmiIjO4Qp+AFMUwSWY5+I7Og6REfPc16peUD0yUGelGdzNrKgWHYrhALbwg9NmSmKk1p gP5A== X-Gm-Message-State: ANhLgQ3MxQ8U44aVMcx7LiWJ42k2hY3zDH817fI/GZ3Lq9s90v8dewwf np3LNhcEw1xf1NPK5E4pukSE6AR9JR1Bv4AC3uy1Vti70wU= X-Google-Smtp-Source: ADFU+vt802eDl6yomu15vpnLPvcS8ld8HnLbzt3u15BU1CjiB3NLVoljNzfkWSvSOnr7FkTu64rHz5SfrGHJJw0TNU4= X-Received: by 2002:a05:6830:20c9:: with SMTP id z9mr3482440otq.44.1584531502669; Wed, 18 Mar 2020 04:38:22 -0700 (PDT) MIME-Version: 1.0 From: "Lad, Prabhakar" Date: Wed, 18 Mar 2020 11:37:56 +0000 Message-ID: Subject: PCIe EPF To: Kishon Vijay Abraham I Cc: Lorenzo Pieralisi , linux-pci Content-Type: text/plain; charset="UTF-8" Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Hi Kishon, I rebased my rcar-endpoint patches on endpoint branch, which has support for streaming DMA API support, with this read/write/copy tests failed, to make sure nothing hasn't changed on my driver I reverted the streaming DMA API patch 74b9b4da84c71418ceeaaeb78dc790376df92fea "misc: pci_endpoint_test: Use streaming DMA APIs for buffer allocation" and tests began to pass again. If add a GFP_DMA flag for kzalloc (with streaming DMA), the test cases for read/write/copy pass as expected. Could you please through some light why this could be happening. Cheers, --Prabhakar Lad