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=-8.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 6A743CA9ED3 for ; Mon, 4 Nov 2019 17:45:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3F7B7214B2 for ; Mon, 4 Nov 2019 17:45:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="ej1u+0lO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728064AbfKDRpA (ORCPT ); Mon, 4 Nov 2019 12:45:00 -0500 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:29105 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728144AbfKDRo7 (ORCPT ); Mon, 4 Nov 2019 12:44:59 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1572889498; 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=YOrYp+dHNK++F3TdjbhwlDZUdTKuNCY8bLNbrJapJJQ=; b=ej1u+0lOXHnBS4xbNzscji9MxEKV4CqxmDUh+G0elYiAOnxiAAGPDmLURd5F3MHnjmLvRY h4EEoapgoEzu/HP0CyGxjpZ+0g9uNyd83uwYyOOKNdPclVEsi5YJzR7lYUgXfhDN57xcvK rb5+demFhlW7zJMeNCzySR4H6syxjD8= 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-426-fsjodwpeO-WySaLYuw_60g-1; Mon, 04 Nov 2019 12:44:56 -0500 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E3BE31005500; Mon, 4 Nov 2019 17:44:52 +0000 (UTC) Received: from redhat.com (unknown [10.20.6.178]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7484E600C4; Mon, 4 Nov 2019 17:44:47 +0000 (UTC) Date: Mon, 4 Nov 2019 12:44:45 -0500 From: Jerome Glisse To: John Hubbard Cc: Andrew Morton , Al Viro , Alex Williamson , Benjamin Herrenschmidt , =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= , Christoph Hellwig , Dan Williams , Daniel Vetter , Dave Chinner , David Airlie , "David S . Miller" , Ira Weiny , Jan Kara , Jason Gunthorpe , Jens Axboe , Jonathan Corbet , Magnus Karlsson , Mauro Carvalho Chehab , Michael Ellerman , Michal Hocko , Mike Kravetz , Paul Mackerras , Shuah Khan , Vlastimil Babka , bpf@vger.kernel.org, dri-devel@lists.freedesktop.org, kvm@vger.kernel.org, linux-block@vger.kernel.org, linux-doc@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-media@vger.kernel.org, linux-rdma@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, netdev@vger.kernel.org, linux-mm@kvack.org, LKML Subject: Re: [PATCH v2 09/18] drm/via: set FOLL_PIN via pin_user_pages_fast() Message-ID: <20191104174445.GF5134@redhat.com> References: <20191103211813.213227-1-jhubbard@nvidia.com> <20191103211813.213227-10-jhubbard@nvidia.com> MIME-Version: 1.0 In-Reply-To: <20191103211813.213227-10-jhubbard@nvidia.com> User-Agent: Mutt/1.12.1 (2019-06-15) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-MC-Unique: fsjodwpeO-WySaLYuw_60g-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org On Sun, Nov 03, 2019 at 01:18:04PM -0800, John Hubbard wrote: > Convert drm/via to use the new pin_user_pages_fast() call, which sets > FOLL_PIN. Setting FOLL_PIN is now required for code that requires > tracking of pinned pages, and therefore for any code that calls > put_user_page(). >=20 > Reviewed-by: Ira Weiny > Signed-off-by: John Hubbard Please be more explicit that via_dmablit.c is already using put_user_page() as i am expecting that any conversion to pin_user_pages*() must be pair wit= h a put_user_page(). I find above commit message bit unclear from that POV. Reviewed-by: J=E9r=F4me Glisse > --- > drivers/gpu/drm/via/via_dmablit.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) >=20 > diff --git a/drivers/gpu/drm/via/via_dmablit.c b/drivers/gpu/drm/via/via_= dmablit.c > index 3db000aacd26..37c5e572993a 100644 > --- a/drivers/gpu/drm/via/via_dmablit.c > +++ b/drivers/gpu/drm/via/via_dmablit.c > @@ -239,7 +239,7 @@ via_lock_all_dma_pages(drm_via_sg_info_t *vsg, drm_v= ia_dmablit_t *xfer) > =09vsg->pages =3D vzalloc(array_size(sizeof(struct page *), vsg->num_pag= es)); > =09if (NULL =3D=3D vsg->pages) > =09=09return -ENOMEM; > -=09ret =3D get_user_pages_fast((unsigned long)xfer->mem_addr, > +=09ret =3D pin_user_pages_fast((unsigned long)xfer->mem_addr, > =09=09=09vsg->num_pages, > =09=09=09vsg->direction =3D=3D DMA_FROM_DEVICE ? FOLL_WRITE : 0, > =09=09=09vsg->pages); > --=20 > 2.23.0 >=20 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=-8.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 B9B84CA9EB5 for ; Mon, 4 Nov 2019 17:47:19 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6F2A620848 for ; Mon, 4 Nov 2019 17:47:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="ZN2NiQ3r" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6F2A620848 Authentication-Results: mail.kernel.org; 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Mon, 4 Nov 2019 17:44:52 +0000 (UTC) Received: from redhat.com (unknown [10.20.6.178]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7484E600C4; Mon, 4 Nov 2019 17:44:47 +0000 (UTC) Date: Mon, 4 Nov 2019 12:44:45 -0500 From: Jerome Glisse To: John Hubbard Subject: Re: [PATCH v2 09/18] drm/via: set FOLL_PIN via pin_user_pages_fast() Message-ID: <20191104174445.GF5134@redhat.com> References: <20191103211813.213227-1-jhubbard@nvidia.com> <20191103211813.213227-10-jhubbard@nvidia.com> MIME-Version: 1.0 In-Reply-To: <20191103211813.213227-10-jhubbard@nvidia.com> User-Agent: Mutt/1.12.1 (2019-06-15) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-MC-Unique: fsjodwpeO-WySaLYuw_60g-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Michal Hocko , Jan Kara , kvm@vger.kernel.org, linux-doc@vger.kernel.org, David Airlie , Dave Chinner , dri-devel@lists.freedesktop.org, linux-mm@kvack.org, Paul Mackerras , linux-kselftest@vger.kernel.org, Ira Weiny , Jonathan Corbet , linux-rdma@vger.kernel.org, Christoph Hellwig , Jason Gunthorpe , Vlastimil Babka , =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= , linux-media@vger.kernel.org, Shuah Khan , linux-block@vger.kernel.org, Alex Williamson , Al Viro , Dan Williams , Mauro Carvalho Chehab , bpf@vger.kernel.org, Magnus Karlsson , Jens Axboe , netdev@vger.kernel.org, LKML , Daniel Vetter , linux-fsdevel@vger.kernel.org, Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S . Miller" , Mike Kravetz Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Sun, Nov 03, 2019 at 01:18:04PM -0800, John Hubbard wrote: > Convert drm/via to use the new pin_user_pages_fast() call, which sets > FOLL_PIN. Setting FOLL_PIN is now required for code that requires > tracking of pinned pages, and therefore for any code that calls > put_user_page(). >=20 > Reviewed-by: Ira Weiny > Signed-off-by: John Hubbard Please be more explicit that via_dmablit.c is already using put_user_page() as i am expecting that any conversion to pin_user_pages*() must be pair wit= h a put_user_page(). I find above commit message bit unclear from that POV. Reviewed-by: J=E9r=F4me Glisse > --- > drivers/gpu/drm/via/via_dmablit.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) >=20 > diff --git a/drivers/gpu/drm/via/via_dmablit.c b/drivers/gpu/drm/via/via_= dmablit.c > index 3db000aacd26..37c5e572993a 100644 > --- a/drivers/gpu/drm/via/via_dmablit.c > +++ b/drivers/gpu/drm/via/via_dmablit.c > @@ -239,7 +239,7 @@ via_lock_all_dma_pages(drm_via_sg_info_t *vsg, drm_v= ia_dmablit_t *xfer) > =09vsg->pages =3D vzalloc(array_size(sizeof(struct page *), vsg->num_pag= es)); > =09if (NULL =3D=3D vsg->pages) > =09=09return -ENOMEM; > -=09ret =3D get_user_pages_fast((unsigned long)xfer->mem_addr, > +=09ret =3D pin_user_pages_fast((unsigned long)xfer->mem_addr, > =09=09=09vsg->num_pages, > =09=09=09vsg->direction =3D=3D DMA_FROM_DEVICE ? FOLL_WRITE : 0, > =09=09=09vsg->pages); > --=20 > 2.23.0 >=20 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jerome Glisse Subject: Re: [PATCH v2 09/18] drm/via: set FOLL_PIN via pin_user_pages_fast() Date: Mon, 4 Nov 2019 12:44:45 -0500 Message-ID: <20191104174445.GF5134@redhat.com> References: <20191103211813.213227-1-jhubbard@nvidia.com> <20191103211813.213227-10-jhubbard@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20191103211813.213227-10-jhubbard@nvidia.com> Content-Disposition: inline Sender: netdev-owner@vger.kernel.org To: John Hubbard Cc: Andrew Morton , Al Viro , Alex Williamson , Benjamin Herrenschmidt , =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= , Christoph Hellwig , Dan Williams , Daniel Vetter , Dave Chinner , David Airlie , "David S . Miller" , Ira Weiny , Jan Kara , Jason Gunthorpe , Jens Axboe , Jonathan Corbet , Magnus Karlsson , Mauro Carvalho Chehab , Michael Ellerman , Michal Hocko List-Id: dri-devel@lists.freedesktop.org On Sun, Nov 03, 2019 at 01:18:04PM -0800, John Hubbard wrote: > Convert drm/via to use the new pin_user_pages_fast() call, which sets > FOLL_PIN. Setting FOLL_PIN is now required for code that requires > tracking of pinned pages, and therefore for any code that calls > put_user_page(). >=20 > Reviewed-by: Ira Weiny > Signed-off-by: John Hubbard Please be more explicit that via_dmablit.c is already using put_user_page() as i am expecting that any conversion to pin_user_pages*() must be pair wit= h a put_user_page(). I find above commit message bit unclear from that POV. Reviewed-by: J=E9r=F4me Glisse > --- > drivers/gpu/drm/via/via_dmablit.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) >=20 > diff --git a/drivers/gpu/drm/via/via_dmablit.c b/drivers/gpu/drm/via/via_= dmablit.c > index 3db000aacd26..37c5e572993a 100644 > --- a/drivers/gpu/drm/via/via_dmablit.c > +++ b/drivers/gpu/drm/via/via_dmablit.c > @@ -239,7 +239,7 @@ via_lock_all_dma_pages(drm_via_sg_info_t *vsg, drm_v= ia_dmablit_t *xfer) > =09vsg->pages =3D vzalloc(array_size(sizeof(struct page *), vsg->num_pag= es)); > =09if (NULL =3D=3D vsg->pages) > =09=09return -ENOMEM; > -=09ret =3D get_user_pages_fast((unsigned long)xfer->mem_addr, > +=09ret =3D pin_user_pages_fast((unsigned long)xfer->mem_addr, > =09=09=09vsg->num_pages, > =09=09=09vsg->direction =3D=3D DMA_FROM_DEVICE ? FOLL_WRITE : 0, > =09=09=09vsg->pages); > --=20 > 2.23.0 >=20 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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 E71D3C47E49 for ; Mon, 4 Nov 2019 17:45:02 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C7410217F4 for ; Mon, 4 Nov 2019 17:45:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C7410217F4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2E76A6E7AD; Mon, 4 Nov 2019 17:45:02 +0000 (UTC) Received: from us-smtp-delivery-1.mimecast.com (us-smtp-2.mimecast.com [205.139.110.61]) by gabe.freedesktop.org (Postfix) with ESMTPS id A24216E7AD for ; Mon, 4 Nov 2019 17:45:01 +0000 (UTC) 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-426-fsjodwpeO-WySaLYuw_60g-1; Mon, 04 Nov 2019 12:44:56 -0500 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E3BE31005500; Mon, 4 Nov 2019 17:44:52 +0000 (UTC) Received: from redhat.com (unknown [10.20.6.178]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7484E600C4; Mon, 4 Nov 2019 17:44:47 +0000 (UTC) Date: Mon, 4 Nov 2019 12:44:45 -0500 From: Jerome Glisse To: John Hubbard Subject: Re: [PATCH v2 09/18] drm/via: set FOLL_PIN via pin_user_pages_fast() Message-ID: <20191104174445.GF5134@redhat.com> References: <20191103211813.213227-1-jhubbard@nvidia.com> <20191103211813.213227-10-jhubbard@nvidia.com> MIME-Version: 1.0 In-Reply-To: <20191103211813.213227-10-jhubbard@nvidia.com> User-Agent: Mutt/1.12.1 (2019-06-15) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-MC-Unique: fsjodwpeO-WySaLYuw_60g-1 X-Mimecast-Spam-Score: 0 Content-Disposition: inline X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1572889500; 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=YOrYp+dHNK++F3TdjbhwlDZUdTKuNCY8bLNbrJapJJQ=; b=ZN2NiQ3rqfZx8iq/tcB47dII+1zdUZU6gUqQ4N8Z0uxbTlfsiZIkqz6vF1vrIrxOICEcO1 zXPYT73zyFDZ8egp7B9jlBNEp2PrQ2Fwmpat2lNWT0Yr8vtU7gIo2gYEhwFHA8E1WV4z2H zB6SnQ6/dYsdwm16bO7XCMOS7zXdP1Q= X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Michal Hocko , Jan Kara , kvm@vger.kernel.org, linux-doc@vger.kernel.org, David Airlie , Dave Chinner , dri-devel@lists.freedesktop.org, linux-mm@kvack.org, Paul Mackerras , linux-kselftest@vger.kernel.org, Ira Weiny , Jonathan Corbet , linux-rdma@vger.kernel.org, Michael Ellerman , Christoph Hellwig , Jason Gunthorpe , Vlastimil Babka , =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= , linux-media@vger.kernel.org, Shuah Khan , linux-block@vger.kernel.org, Alex Williamson , Al Viro , Dan Williams , Mauro Carvalho Chehab , bpf@vger.kernel.org, Magnus Karlsson , Jens Axboe , netdev@vger.kernel.org, LKML , linux-fsdevel@vger.kernel.org, Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S . 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