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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 31CFBC4CEC9 for ; Tue, 17 Sep 2019 11:40:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0E08721852 for ; Tue, 17 Sep 2019 11:40:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727011AbfIQLkr (ORCPT ); Tue, 17 Sep 2019 07:40:47 -0400 Received: from mx1.redhat.com ([209.132.183.28]:34846 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726106AbfIQLkq (ORCPT ); Tue, 17 Sep 2019 07:40:46 -0400 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 mx1.redhat.com (Postfix) with ESMTPS id 62364369AC; Tue, 17 Sep 2019 11:40:46 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-116-47.ams2.redhat.com [10.36.116.47]) by smtp.corp.redhat.com (Postfix) with ESMTP id 037C76012E; Tue, 17 Sep 2019 11:40:45 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 7883E16E05; Tue, 17 Sep 2019 13:40:41 +0200 (CEST) Date: Tue, 17 Sep 2019 13:40:41 +0200 From: Gerd Hoffmann To: "Koenig, Christian" Cc: "dri-devel@lists.freedesktop.org" , Thomas Zimmermann , Daniel Vetter , "Huang, Ray" , David Airlie , Daniel Vetter , open list Subject: Re: [PATCH v2 07/11] drm/ttm: drop VM_DONTDUMP Message-ID: <20190917114041.6oaukfnsai5rmf54@sirius.home.kraxel.org> References: <20190917092404.9982-1-kraxel@redhat.com> <20190917092404.9982-8-kraxel@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20180716 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Tue, 17 Sep 2019 11:40:46 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 17, 2019 at 11:22:35AM +0000, Koenig, Christian wrote: > Am 17.09.19 um 11:24 schrieb Gerd Hoffmann: > > Not obvious why this is needed. According to Deniel Vetter this is most > > likely a historic artefact dating back to the days where drm drivers > > exposed hardware registers as mmap'able gem objects, to avoid dumping > > touching those registers. > > Clearly a NAK. > > We still have that and really don't want to try dumping any CPU > inaccessible VRAM content even if it is mapped into the address space > somewhere. Thanks for the clarification, I'll drop the patch. cheers, Gerd