From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=LQxz=DO=vger.kernel.org=linux-kernel-owner@kernel.org>
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=-12.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH,
	DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,
	INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A,SIGNED_OFF_BY,SPF_HELO_NONE,
	SPF_PASS,URIBL_BLOCKED,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 11FA5C4363C
	for <linux-kernel@archiver.kernel.org>; Wed,  7 Oct 2020 20:46:09 +0000 (UTC)
Received: from vger.kernel.org (vger.kernel.org [23.128.96.18])
	by mail.kernel.org (Postfix) with ESMTP id A485D2083B
	for <linux-kernel@archiver.kernel.org>; Wed,  7 Oct 2020 20:46:08 +0000 (UTC)
Authentication-Results: mail.kernel.org;
	dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="hDjrDWj3"
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1728372AbgJGUqH (ORCPT
        <rfc822;linux-kernel@archiver.kernel.org>);
        Wed, 7 Oct 2020 16:46:07 -0400
Received: from hqnvemgate25.nvidia.com ([216.228.121.64]:4378 "EHLO
        hqnvemgate25.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1727817AbgJGUqH (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Wed, 7 Oct 2020 16:46:07 -0400
Received: from hqmail.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate25.nvidia.com (using TLS: TLSv1.2, AES256-SHA)
        id <B5f7e28d60001>; Wed, 07 Oct 2020 13:45:10 -0700
Received: from [10.2.85.86] (172.20.13.39) by HQMAIL107.nvidia.com
 (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 7 Oct
 2020 20:46:04 +0000
Subject: Re: [PATCH 04/13] misc/habana: Use FOLL_LONGTERM for userptr
To:     Daniel Vetter <daniel.vetter@ffwll.ch>,
        DRI Development <dri-devel@lists.freedesktop.org>,
        LKML <linux-kernel@vger.kernel.org>
CC:     <kvm@vger.kernel.org>, <linux-mm@kvack.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-samsung-soc@vger.kernel.org>, <linux-media@vger.kernel.org>,
        <linux-s390@vger.kernel.org>,
        Daniel Vetter <daniel.vetter@intel.com>,
        Jason Gunthorpe <jgg@ziepe.ca>,
        Andrew Morton <akpm@linux-foundation.org>,
        =?UTF-8?B?SsOpcsO0bWUgR2xpc3Nl?= <jglisse@redhat.com>,
        Jan Kara <jack@suse.cz>,
        Dan Williams <dan.j.williams@intel.com>,
        Oded Gabbay <oded.gabbay@gmail.com>,
        "Omer Shpigelman" <oshpigelman@habana.ai>,
        Ofir Bitton <obitton@habana.ai>,
        "Tomer Tayar" <ttayar@habana.ai>,
        Moti Haimovski <mhaimovski@habana.ai>,
        "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
        Pawel Piskorski <ppiskorski@habana.ai>
References: <20201007164426.1812530-1-daniel.vetter@ffwll.ch>
 <20201007164426.1812530-5-daniel.vetter@ffwll.ch>
From:   John Hubbard <jhubbard@nvidia.com>
Message-ID: <ce781e05-044f-b62b-6a39-952d73ed1597@nvidia.com>
Date:   Wed, 7 Oct 2020 13:46:04 -0700
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
 Thunderbird/68.12.0
MIME-Version: 1.0
In-Reply-To: <20201007164426.1812530-5-daniel.vetter@ffwll.ch>
Content-Type: text/plain; charset="utf-8"; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: quoted-printable
X-Originating-IP: [172.20.13.39]
X-ClientProxiedBy: HQMAIL107.nvidia.com (172.20.187.13) To
 HQMAIL107.nvidia.com (172.20.187.13)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1;
        t=1602103510; bh=7gGgalGDQ5Ct6e6oxVX0GKF6fkHgYYKPLymOR6tYzGU=;
        h=Subject:To:CC:References:From:Message-ID:Date:User-Agent:
         MIME-Version:In-Reply-To:Content-Type:Content-Language:
         Content-Transfer-Encoding:X-Originating-IP:X-ClientProxiedBy;
        b=hDjrDWj3freRp1ybK4xKGh41JWbS/a33PUUY+OIWq7wCWr+gCw+Y7YWb5GlTFEByE
         06K89H4PC9BMZJaiw+BZP5M8S63s07IUAQmo5lhkpnjZjEHyuHCRX/mEyfrbv2RBi5
         uJ6DJLDc5KN5KysnSSFAUMzyEIRMWCHps09MbLSPAmKyksOETypirPJ00zDDmc2NCZ
         lJPmgPC8cvOAyzelVuiBvVdtaxIZHAi58+kUse68GpdmUNRj3f+Wze2ZUsmO23bUkK
         9BmqvzTyBGOaJd5NV2EhoHkVJltdEz8lMfwvWRt1wL0j/5/KzKm43UEdXWpjm7rSjF
         Pm1sw+83JPf1g==
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On 10/7/20 9:44 AM, Daniel Vetter wrote:
> These are persistent, not just for the duration of a dma operation.
>=20
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> Cc: Jason Gunthorpe <jgg@ziepe.ca>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: John Hubbard <jhubbard@nvidia.com>
> Cc: J=C3=A9r=C3=B4me Glisse <jglisse@redhat.com>
> Cc: Jan Kara <jack@suse.cz>
> Cc: Dan Williams <dan.j.williams@intel.com>
> Cc: linux-mm@kvack.org
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-samsung-soc@vger.kernel.org
> Cc: linux-media@vger.kernel.org
> Cc: Oded Gabbay <oded.gabbay@gmail.com>
> Cc: Omer Shpigelman <oshpigelman@habana.ai>
> Cc: Ofir Bitton <obitton@habana.ai>
> Cc: Tomer Tayar <ttayar@habana.ai>
> Cc: Moti Haimovski <mhaimovski@habana.ai>
> Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: Pawel Piskorski <ppiskorski@habana.ai>
> ---
>   drivers/misc/habanalabs/common/memory.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>=20
> diff --git a/drivers/misc/habanalabs/common/memory.c b/drivers/misc/haban=
alabs/common/memory.c
> index ef89cfa2f95a..94bef8faa82a 100644
> --- a/drivers/misc/habanalabs/common/memory.c
> +++ b/drivers/misc/habanalabs/common/memory.c
> @@ -1288,7 +1288,8 @@ static int get_user_memory(struct hl_device *hdev, =
u64 addr, u64 size,
>   		return -ENOMEM;
>   	}
>  =20
> -	rc =3D pin_user_pages_fast(start, npages, FOLL_FORCE | FOLL_WRITE,
> +	rc =3D pin_user_pages_fast(start, npages,
> +				 FOLL_FORCE | FOLL_WRITE | FOLL_LONGTERM,
>   				 userptr->pages);
>  =20
>   	if (rc !=3D npages) {
>=20

Again, from a pin_user_pages_fast() point of view, and not being at all fam=
iliar
with the habana driver (but their use of this really does seem clearly _LON=
GTERM!):

Reviewed-by: John Hubbard <jhubbard@nvidia.com>

thanks,
--=20
John Hubbard
NVIDIA

From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=noaO=DO=lists.infradead.org=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@kernel.org>
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=-9.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH,
	DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,
	MAILING_LIST_MULTI,NICE_REPLY_A,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,
	UNWANTED_LANGUAGE_BODY,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 59DE5C4363C
	for <linux-arm-kernel@archiver.kernel.org>; Wed,  7 Oct 2020 20:47:31 +0000 (UTC)
Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134])
	(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 EAF4820782
	for <linux-arm-kernel@archiver.kernel.org>; Wed,  7 Oct 2020 20:47:30 +0000 (UTC)
Authentication-Results: mail.kernel.org;
	dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Rt5B/7m5";
	dkim=fail reason="signature verification failed" (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="hDjrDWj3"
DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EAF4820782
Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nvidia.com
Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
	d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Type:
	Content-Transfer-Encoding:Cc:List-Subscribe:List-Help:List-Post:List-Archive:
	List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From:
	References:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date:
	Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner;
	 bh=RiGkc/idAZqFPEAbLjGkeTe5TK+mju6wMClyqV96Cqw=; b=Rt5B/7m5bbZRR0JyWR4nZdDrn
	CoKHrMIgEveZrv+sjwIOED4CNtj6eBOEyQsT20p7u96P0H5K/VE2ke8BCskclXaMmWaGZev/uUmCq
	E1bLRcR4fgNAMlaS4DRzWOQTsMnigx6eAZJx5JroNp+BFs/9OylPSrFQ8ulXkoChfMrFMkdNCA9x1
	Z80R1A1VyMilpLOWATuq/yvdMSWO5ERM4MZUriWf0tMxbC4KNw+DFg4LDW1LnPTZi8chpbib6ZJEd
	G4ikTt0NN5AOlpoytWmqCxe2iFJXEw2MK2UH6DC3GiCdGmHhqkzspn3EnKsFwJ8414we3IgLvZUpD
	Zzl64WwaA==;
Received: from localhost ([::1] helo=merlin.infradead.org)
	by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux))
	id 1kQGKA-0003pb-6E; Wed, 07 Oct 2020 20:46:10 +0000
Received: from hqnvemgate25.nvidia.com ([216.228.121.64])
 by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux))
 id 1kQGK7-0003oG-K6
 for linux-arm-kernel@lists.infradead.org; Wed, 07 Oct 2020 20:46:08 +0000
Received: from hqmail.nvidia.com (Not Verified[216.228.121.13]) by
 hqnvemgate25.nvidia.com (using TLS: TLSv1.2, AES256-SHA)
 id <B5f7e28d60001>; Wed, 07 Oct 2020 13:45:10 -0700
Received: from [10.2.85.86] (172.20.13.39) by HQMAIL107.nvidia.com
 (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 7 Oct
 2020 20:46:04 +0000
Subject: Re: [PATCH 04/13] misc/habana: Use FOLL_LONGTERM for userptr
To: Daniel Vetter <daniel.vetter@ffwll.ch>, DRI Development
 <dri-devel@lists.freedesktop.org>, LKML <linux-kernel@vger.kernel.org>
References: <20201007164426.1812530-1-daniel.vetter@ffwll.ch>
 <20201007164426.1812530-5-daniel.vetter@ffwll.ch>
From: John Hubbard <jhubbard@nvidia.com>
Message-ID: <ce781e05-044f-b62b-6a39-952d73ed1597@nvidia.com>
Date: Wed, 7 Oct 2020 13:46:04 -0700
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
 Thunderbird/68.12.0
MIME-Version: 1.0
In-Reply-To: <20201007164426.1812530-5-daniel.vetter@ffwll.ch>
Content-Language: en-US
X-Originating-IP: [172.20.13.39]
X-ClientProxiedBy: HQMAIL107.nvidia.com (172.20.187.13) To
 HQMAIL107.nvidia.com (172.20.187.13)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1;
 t=1602103510; bh=7gGgalGDQ5Ct6e6oxVX0GKF6fkHgYYKPLymOR6tYzGU=;
 h=Subject:To:CC:References:From:Message-ID:Date:User-Agent:
 MIME-Version:In-Reply-To:Content-Type:Content-Language:
 Content-Transfer-Encoding:X-Originating-IP:X-ClientProxiedBy;
 b=hDjrDWj3freRp1ybK4xKGh41JWbS/a33PUUY+OIWq7wCWr+gCw+Y7YWb5GlTFEByE
 06K89H4PC9BMZJaiw+BZP5M8S63s07IUAQmo5lhkpnjZjEHyuHCRX/mEyfrbv2RBi5
 uJ6DJLDc5KN5KysnSSFAUMzyEIRMWCHps09MbLSPAmKyksOETypirPJ00zDDmc2NCZ
 lJPmgPC8cvOAyzelVuiBvVdtaxIZHAi58+kUse68GpdmUNRj3f+Wze2ZUsmO23bUkK
 9BmqvzTyBGOaJd5NV2EhoHkVJltdEz8lMfwvWRt1wL0j/5/KzKm43UEdXWpjm7rSjF
 Pm1sw+83JPf1g==
X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 
X-CRM114-CacheID: sfid-20201007_164607_759105_B187EAAF 
X-CRM114-Status: GOOD (  16.44  )
X-BeenThere: linux-arm-kernel@lists.infradead.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: <linux-arm-kernel.lists.infradead.org>
List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-arm-kernel>, 
 <mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe>
List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/>
List-Post: <mailto:linux-arm-kernel@lists.infradead.org>
List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help>
List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>, 
 <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe>
Cc: Oded Gabbay <oded.gabbay@gmail.com>, linux-s390@vger.kernel.org,
 linux-samsung-soc@vger.kernel.org, Jan Kara <jack@suse.cz>,
 kvm@vger.kernel.org, Jason Gunthorpe <jgg@ziepe.ca>,
 Pawel Piskorski <ppiskorski@habana.ai>, Greg
 Kroah-Hartman <gregkh@linuxfoundation.org>, Ofir Bitton <obitton@habana.ai>,
 linux-mm@kvack.org, =?UTF-8?B?SsOpcsO0bWUgR2xpc3Nl?= <jglisse@redhat.com>,
 Tomer Tayar <ttayar@habana.ai>, Omer
 Shpigelman <oshpigelman@habana.ai>, Daniel Vetter <daniel.vetter@intel.com>,
 Andrew Morton <akpm@linux-foundation.org>,
 Moti Haimovski <mhaimovski@habana.ai>, Dan Williams <dan.j.williams@intel.com>,
 linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org
Content-Transfer-Encoding: base64
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org>
Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org
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From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=iJ/Y=DO=lists.freedesktop.org=dri-devel-bounces@kernel.org>
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=BAYES_00,DKIM_INVALID,
	DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,
	NICE_REPLY_A,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY,
	URIBL_BLOCKED,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 DAFD6C4727E
	for <dri-devel@archiver.kernel.org>; Wed,  7 Oct 2020 20:46:09 +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 697D22076B
	for <dri-devel@archiver.kernel.org>; Wed,  7 Oct 2020 20:46:09 +0000 (UTC)
Authentication-Results: mail.kernel.org;
	dkim=fail reason="signature verification failed" (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="hDjrDWj3"
DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 697D22076B
Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nvidia.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 49AE56E9B0;
	Wed,  7 Oct 2020 20:46:08 +0000 (UTC)
Received: from hqnvemgate25.nvidia.com (hqnvemgate25.nvidia.com
 [216.228.121.64])
 by gabe.freedesktop.org (Postfix) with ESMTPS id 7213F6E9AF
 for <dri-devel@lists.freedesktop.org>; Wed,  7 Oct 2020 20:46:06 +0000 (UTC)
Received: from hqmail.nvidia.com (Not Verified[216.228.121.13]) by
 hqnvemgate25.nvidia.com (using TLS: TLSv1.2, AES256-SHA)
 id <B5f7e28d60001>; Wed, 07 Oct 2020 13:45:10 -0700
Received: from [10.2.85.86] (172.20.13.39) by HQMAIL107.nvidia.com
 (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 7 Oct
 2020 20:46:04 +0000
Subject: Re: [PATCH 04/13] misc/habana: Use FOLL_LONGTERM for userptr
To: Daniel Vetter <daniel.vetter@ffwll.ch>, DRI Development
 <dri-devel@lists.freedesktop.org>, LKML <linux-kernel@vger.kernel.org>
References: <20201007164426.1812530-1-daniel.vetter@ffwll.ch>
 <20201007164426.1812530-5-daniel.vetter@ffwll.ch>
From: John Hubbard <jhubbard@nvidia.com>
Message-ID: <ce781e05-044f-b62b-6a39-952d73ed1597@nvidia.com>
Date: Wed, 7 Oct 2020 13:46:04 -0700
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
 Thunderbird/68.12.0
MIME-Version: 1.0
In-Reply-To: <20201007164426.1812530-5-daniel.vetter@ffwll.ch>
Content-Language: en-US
X-Originating-IP: [172.20.13.39]
X-ClientProxiedBy: HQMAIL107.nvidia.com (172.20.187.13) To
 HQMAIL107.nvidia.com (172.20.187.13)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1;
 t=1602103510; bh=7gGgalGDQ5Ct6e6oxVX0GKF6fkHgYYKPLymOR6tYzGU=;
 h=Subject:To:CC:References:From:Message-ID:Date:User-Agent:
 MIME-Version:In-Reply-To:Content-Type:Content-Language:
 Content-Transfer-Encoding:X-Originating-IP:X-ClientProxiedBy;
 b=hDjrDWj3freRp1ybK4xKGh41JWbS/a33PUUY+OIWq7wCWr+gCw+Y7YWb5GlTFEByE
 06K89H4PC9BMZJaiw+BZP5M8S63s07IUAQmo5lhkpnjZjEHyuHCRX/mEyfrbv2RBi5
 uJ6DJLDc5KN5KysnSSFAUMzyEIRMWCHps09MbLSPAmKyksOETypirPJ00zDDmc2NCZ
 lJPmgPC8cvOAyzelVuiBvVdtaxIZHAi58+kUse68GpdmUNRj3f+Wze2ZUsmO23bUkK
 9BmqvzTyBGOaJd5NV2EhoHkVJltdEz8lMfwvWRt1wL0j/5/KzKm43UEdXWpjm7rSjF
 Pm1sw+83JPf1g==
X-BeenThere: dri-devel@lists.freedesktop.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Direct Rendering Infrastructure - Development
 <dri-devel.lists.freedesktop.org>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/dri-devel>
List-Post: <mailto:dri-devel@lists.freedesktop.org>
List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe>
Cc: linux-s390@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
 Jan Kara <jack@suse.cz>, kvm@vger.kernel.org, Jason Gunthorpe <jgg@ziepe.ca>,
 Pawel Piskorski <ppiskorski@habana.ai>, Greg
 Kroah-Hartman <gregkh@linuxfoundation.org>, Ofir Bitton <obitton@habana.ai>,
 linux-mm@kvack.org, =?UTF-8?B?SsOpcsO0bWUgR2xpc3Nl?= <jglisse@redhat.com>,
 Tomer Tayar <ttayar@habana.ai>, Omer
 Shpigelman <oshpigelman@habana.ai>, Daniel Vetter <daniel.vetter@intel.com>,
 Andrew Morton <akpm@linux-foundation.org>,
 Moti Haimovski <mhaimovski@habana.ai>, Dan Williams <dan.j.williams@intel.com>,
 linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org
Content-Transfer-Encoding: base64
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Errors-To: dri-devel-bounces@lists.freedesktop.org
Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org>
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