From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=FvrY=LY=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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,SPF_PASS,UNPARSEABLE_RELAY 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 F2D6DC433F5
	for <linux-kernel@archiver.kernel.org>; Mon, 10 Sep 2018 11:32:05 +0000 (UTC)
Received: from vger.kernel.org (vger.kernel.org [209.132.180.67])
	by mail.kernel.org (Postfix) with ESMTP id 76C0120866
	for <linux-kernel@archiver.kernel.org>; Mon, 10 Sep 2018 11:32:05 +0000 (UTC)
DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 76C0120866
Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com
Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1728508AbeIJQZk (ORCPT
        <rfc822;linux-kernel@archiver.kernel.org>);
        Mon, 10 Sep 2018 12:25:40 -0400
Received: from bhuna.collabora.co.uk ([46.235.227.227]:56774 "EHLO
        bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1727646AbeIJQZk (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Mon, 10 Sep 2018 12:25:40 -0400
Received: from [127.0.0.1] (localhost [127.0.0.1])
        (Authenticated sender: gerddie)
        with ESMTPSA id B1E4F277B58
Message-ID: <1536579068.4810.68.camel@collabora.com>
Subject: Re: [PATCH v7] Add udmabuf misc device
From:   Gert Wollny <gert.wollny@collabora.com>
To:     Gerd Hoffmann <kraxel@redhat.com>
Cc:     linux-kernel@vger.kernel.org, David Airlie <airlied@linux.ie>,
        Tomeu Vizoso <tomeu.vizoso@collabora.com>,
        Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        Daniel Vetter <daniel@ffwll.ch>
Date:   Mon, 10 Sep 2018 13:31:08 +0200
In-Reply-To: <20180910105309.zmyoo5yhrmqg47md@sirius.home.kraxel.org>
References: <1536491489.4810.22.camel@collabora.com>
         <20180910083731.o4rryvermyighbtp@sirius.home.kraxel.org>
         <1536571118.4810.38.camel@collabora.com>
         <20180910105309.zmyoo5yhrmqg47md@sirius.home.kraxel.org>
Content-Type: text/plain; charset="UTF-8"
X-Mailer: Evolution 3.24.6 
Mime-Version: 1.0
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Am Montag, den 10.09.2018, 12:53 +0200 schrieb Gerd Hoffmann:
> 
> By default qemu doesn't use memfd for backing storage, you have to
> explicitly configure qemu that way (see qemu commit log of the test
> branch):
> 
>     qemu-system-x86_64 -m 2G
>             -object memory-backend-memfd,id=ram,size=2G
>             -numa node,memdev=ram"

Thanks, but that doesn't seem to help. Are there any host kernel
configuration parameters or features that I should set (apart from
enabling udmabuf)? 

Best, 
Gert