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=-3.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 635EEC433E6 for ; Wed, 13 Jan 2021 16:48:00 +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 0DD3C23441 for ; Wed, 13 Jan 2021 16:47:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0DD3C23441 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 DA18C6EB43; Wed, 13 Jan 2021 16:47:57 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [63.128.21.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id ECC296EB33 for ; Wed, 13 Jan 2021 16:47:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1610556475; 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=mMP7Uu1omhLwuQabuN/ve5GPqmI9hcJSvp6O8aAN+hk=; b=F/V9/nNYQpSTz2M7dfWPwvHbi5StfvzYLZtMzUzlOFZ0cwOa0/pUp7IHvg97p78e9gD018 NzwT9WwUeXHp0sFkLAQJg3wL6At43/Dy1sPge0EMGZfChe5dGcWNmXBasIt/IV52KeBRG2 OvgW4mrqTWe7Kz3c49rHNwmiyu3k2To= 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-382-OEGxfA5QMVy3HCehMr_M6A-1; Wed, 13 Jan 2021 11:47:51 -0500 X-MC-Unique: OEGxfA5QMVy3HCehMr_M6A-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D6BA7806660; Wed, 13 Jan 2021 16:47:49 +0000 (UTC) Received: from redhat.com (ovpn-112-31.rdu2.redhat.com [10.10.112.31]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 431A81001901; Wed, 13 Jan 2021 16:47:49 +0000 (UTC) Date: Wed, 13 Jan 2021 11:47:47 -0500 From: Jerome Glisse To: Felix Kuehling Subject: Re: [PATCH 00/35] Add HMM-based SVM memory manager to KFD Message-ID: <20210113164747.GA521755@redhat.com> References: <20210107030127.20393-1-Felix.Kuehling@amd.com> MIME-Version: 1.0 In-Reply-To: <20210107030127.20393-1-Felix.Kuehling@amd.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jglisse@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Disposition: inline X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alex.sierra@amd.com, philip.yang@amd.com, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Wed, Jan 06, 2021 at 10:00:52PM -0500, Felix Kuehling wrote: > This is the first version of our HMM based shared virtual memory manager > for KFD. There are still a number of known issues that we're working thro= ugh > (see below). This will likely lead to some pretty significant changes in > MMU notifier handling and locking on the migration code paths. So don't > get hung up on those details yet. [...] > Known issues: > * won't work with IOMMU enabled, we need to dma_map all pages properly > * still working on some race conditions and random bugs > * performance is not great yet What would those changes looks like ? Seeing the issue below i do not see how they inter-play with mmu notifier. Can you elaborate. Cheers, J=C3=A9r=C3=B4me _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel