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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 49103C43217 for ; Tue, 28 Sep 2021 18:58:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2898C6124A for ; Tue, 28 Sep 2021 18:58:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242364AbhI1S7j (ORCPT ); Tue, 28 Sep 2021 14:59:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58680 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242373AbhI1S7h (ORCPT ); Tue, 28 Sep 2021 14:59:37 -0400 Received: from mail-pj1-x102f.google.com (mail-pj1-x102f.google.com [IPv6:2607:f8b0:4864:20::102f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 187C4C061749 for ; Tue, 28 Sep 2021 11:57:58 -0700 (PDT) Received: by mail-pj1-x102f.google.com with SMTP id kn18so2690249pjb.5 for ; Tue, 28 Sep 2021 11:57:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ziepe.ca; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=oHaryRFi/fpZmucH1uQxicsHfaWcwCrvG9TbLYxvHTw=; b=Jx2GOuLqIF/s/mi2Zrk/xAaRKuyWPWZHCfm+XwkC1Yr0Dv0vjM+OfZQXVIMiJLsjmt UrV/wXbA0S/kA8NHbPEFpp1dbqLg5YihHJ0daxdbRmoiYipdrvH9aE1GR+5dg2ru+RLb D9RlleKhxyRZz7x683IeC5JDgX+RCiwr9h+iGzv5av3RkyBoFDWC4oGW5kDI8NZqd+wU GG0wiVbU0tcwD2OsUIWVh8MXHIcG0Qmyu9kG4Cl/ZJH0N5wnluQLcxjz6xhITElaiUL1 soubsWJ2CeaU97V7PVulKA29iDPu0PVzaYdGQFsHPsL8RlHji5XVx44zUSja9oX1iGFJ ehCQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=oHaryRFi/fpZmucH1uQxicsHfaWcwCrvG9TbLYxvHTw=; b=vABWHTJKJqEvZJerDV79xuAJ8e0FbczK+ju+hrYCkg53wWWcMzFX9V/cbjuI9ei6p8 H+lXlMYK96loysTGl+qTwVtj5OSCg4lBZgvn2GSsfWNxCpSVNjF408pQqbe5kjmCcEq7 F77j1/5ofdcv7DTqUzki7bQ5iRI8WB8QLs10uvdKm//0EDzVUHgFkbrZRHiuCohHZlvM PnDvgtYveV+PFZwaYO+DmatH/0O4G6aaDqsWAypXlvlk+f7nrZS5U7gEw61/+jsjE0aV iDd3kiyxoXgHSdWoGtK4ZVtEe22UfoxzSXwiWDOGqI2BhOSwSI8sNB49db4A4gqrFXpg WCBg== X-Gm-Message-State: AOAM530y9Bo5NDYgdaZ/z2RUx2qjsfeK6db0nlsPauJLXcSm7rV0H5ss lF6IRju2PLtmf8QtmRUqgcTLYQ== X-Google-Smtp-Source: ABdhPJx53FQmydkeg1NJ3LXDS/rZkMGUByvF4f/aWGCpIOOYUi1lNT78rKchyK327J3h0Fhk9/CHgw== X-Received: by 2002:a17:902:a604:b029:12c:dda2:30c4 with SMTP id u4-20020a170902a604b029012cdda230c4mr6060505plq.73.1632855477627; Tue, 28 Sep 2021 11:57:57 -0700 (PDT) Received: from ziepe.ca ([206.223.160.26]) by smtp.gmail.com with ESMTPSA id o20sm22682349pgd.31.2021.09.28.11.57.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Sep 2021 11:57:57 -0700 (PDT) Received: from jgg by mlx with local (Exim 4.94) (envelope-from ) id 1mVIId-007FjO-20; Tue, 28 Sep 2021 15:57:55 -0300 Date: Tue, 28 Sep 2021 15:57:55 -0300 From: Jason Gunthorpe To: Logan Gunthorpe Cc: linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, linux-pci@vger.kernel.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org, Stephen Bates , Christoph Hellwig , Dan Williams , Christian =?utf-8?B?S8O2bmln?= , John Hubbard , Don Dutile , Matthew Wilcox , Daniel Vetter , Jakowski Andrzej , Minturn Dave B , Jason Ekstrand , Dave Hansen , Xiong Jianxin , Bjorn Helgaas , Ira Weiny , Robin Murphy , Martin Oliveira , Chaitanya Kulkarni Subject: Re: [PATCH v3 05/20] dma-mapping: allow EREMOTEIO return code for P2PDMA transfers Message-ID: <20210928185755.GM3544071@ziepe.ca> References: <20210916234100.122368-1-logang@deltatee.com> <20210916234100.122368-6-logang@deltatee.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210916234100.122368-6-logang@deltatee.com> Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Thu, Sep 16, 2021 at 05:40:45PM -0600, Logan Gunthorpe wrote: > Add EREMOTEIO error return to dma_map_sgtable() which will be used > by .map_sg() implementations that detect P2PDMA pages that the > underlying DMA device cannot access. > > Signed-off-by: Logan Gunthorpe > --- > kernel/dma/mapping.c | 16 +++++++++------- > 1 file changed, 9 insertions(+), 7 deletions(-) Reviewed-by: Jason Gunthorpe Jason