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=-0.7 required=3.0 tests=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 4E96AC433DF for ; Fri, 29 May 2020 14:38:01 +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 007472072D for ; Fri, 29 May 2020 14:37:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 007472072D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=chris-wilson.co.uk Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9EFB56E8AD; Fri, 29 May 2020 14:37:59 +0000 (UTC) Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id 19E776E8AD for ; Fri, 29 May 2020 14:37:57 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from localhost (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP (TLS) id 21335775-1500050 for multiple; Fri, 29 May 2020 15:37:53 +0100 MIME-Version: 1.0 In-Reply-To: <87y2pastta.fsf@gaia.fi.intel.com> References: <20200529130019.17977-1-chris@chris-wilson.co.uk> <87y2pastta.fsf@gaia.fi.intel.com> To: Mika Kuoppala , intel-gfx@lists.freedesktop.org From: Chris Wilson Message-ID: <159076307407.8851.10847605038685432539@build.alporthouse.com> User-Agent: alot/0.8.1 Date: Fri, 29 May 2020 15:37:54 +0100 Subject: Re: [Intel-gfx] [PATCH] drm/i915: Discard a misplaced GGTT vma X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Quoting Mika Kuoppala (2020-05-29 15:24:17) > Chris Wilson writes: > > > Across the many users of the GGTT vma (internal objects, mmapings, > > display etc), we may end up with conflicting requirements for the > > placement. Currently, we try to resolve the conflict by unbinding the > > vma and rebinding it to match the new constraints; over time we will end > > up with a GGTT that matches the most strict constraints over all > > concurrent users. However, this causes a problem if the vma is currently > > in use as we must wait until it is idle before moving it. But there is > > no restriction on the number of views we may (apart from the limited > > we may...have/impose? we may have/create/use >From the object point-of-view, there is a presumption that is a single normal view with as many partials as required (one expects up to obj->size/chunk_size). -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx