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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 E98CBC433E0 for ; Thu, 4 Mar 2021 06:17:22 +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 B687264EF6 for ; Thu, 4 Mar 2021 06:17:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B687264EF6 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nvidia.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=nouveau-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5B5AE6E9F3; Thu, 4 Mar 2021 06:17:16 +0000 (UTC) Received: from hqnvemgate24.nvidia.com (hqnvemgate24.nvidia.com [216.228.121.143]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1D22B89E3F; Thu, 4 Mar 2021 06:17:15 +0000 (UTC) Received: from hqmail.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate24.nvidia.com (using TLS: TLSv1.2, AES256-SHA) id ; Wed, 03 Mar 2021 22:17:14 -0800 Received: from DRHQMAIL107.nvidia.com (10.27.9.16) by HQMAIL109.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 4 Mar 2021 06:17:13 +0000 Received: from localhost (172.20.145.6) by DRHQMAIL107.nvidia.com (10.27.9.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 4 Mar 2021 06:17:13 +0000 From: Alistair Popple To: , , , Date: Thu, 4 Mar 2021 17:16:44 +1100 Message-ID: <20210304061645.29747-8-apopple@nvidia.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210304061645.29747-1-apopple@nvidia.com> References: <20210304061645.29747-1-apopple@nvidia.com> MIME-Version: 1.0 X-Originating-IP: [172.20.145.6] X-ClientProxiedBy: HQMAIL107.nvidia.com (172.20.187.13) To DRHQMAIL107.nvidia.com (10.27.9.16) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1614838634; bh=IDt/w91IyQ/+IVJx/VBVmCwlFW3knn/F3DU7wj6KD1M=; h=From:To:CC:Subject:Date:Message-ID:X-Mailer:In-Reply-To: References:MIME-Version:Content-Transfer-Encoding:Content-Type: X-Originating-IP:X-ClientProxiedBy; b=iea2v9cuC33Fcdf6Qc8wlbyrZccFDNYGFPM5zi8uzYlQe6964xt2mkJIgu3K6Bl4s 0gXmo3Zgcuiuz+odKlP0n3s1iDHtCsN7Vb4/U55msKVgMXNo4upC+J6QsX+M4Nw7BY wI7vBwyuBA93q4Gh9/cq8/4NsLX7lVhWI++0qfR7yC8QmFx60XiCYCFL6v5b2DlJsY Omb4CNqFyVssb4SUiwj3hSE90tqC3sJ234x7Uh84/SAL3NBiCMKF+Qu7zXJP4IxO2x JnVusYvPiHc8rhTdVe/sr8CHyoy2bHvg9dqytuiac9OcWIBqRaTyiRwEbBEQ/m61vm pmiFvevgJp+Dw== Subject: [Nouveau] [PATCH v4 7/8] nouveau/svm: Refactor nouveau_range_fault X-BeenThere: nouveau@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Nouveau development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: rcampbell@nvidia.com, linux-doc@vger.kernel.org, Alistair Popple , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, kvm-ppc@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: nouveau-bounces@lists.freedesktop.org Sender: "Nouveau" Call mmu_interval_notifier_insert() as part of nouveau_range_fault(). This doesn't introduce any functional change but makes it easier for a subsequent patch to alter the behaviour of nouveau_range_fault() to support GPU atomic operations. Signed-off-by: Alistair Popple --- drivers/gpu/drm/nouveau/nouveau_svm.c | 34 ++++++++++++++++----------- 1 file changed, 20 insertions(+), 14 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c index f18bd53da052..cd7b47c946cf 100644 --- a/drivers/gpu/drm/nouveau/nouveau_svm.c +++ b/drivers/gpu/drm/nouveau/nouveau_svm.c @@ -567,18 +567,27 @@ static int nouveau_range_fault(struct nouveau_svmm *svmm, unsigned long hmm_pfns[1]; struct hmm_range range = { .notifier = ¬ifier->notifier, - .start = notifier->notifier.interval_tree.start, - .end = notifier->notifier.interval_tree.last + 1, .default_flags = hmm_flags, .hmm_pfns = hmm_pfns, .dev_private_owner = drm->dev, }; - struct mm_struct *mm = notifier->notifier.mm; + struct mm_struct *mm = svmm->notifier.mm; int ret; + ret = mmu_interval_notifier_insert(¬ifier->notifier, mm, + args->p.addr, args->p.size, + &nouveau_svm_mni_ops); + if (ret) + return ret; + + range.start = notifier->notifier.interval_tree.start; + range.end = notifier->notifier.interval_tree.last + 1; + while (true) { - if (time_after(jiffies, timeout)) - return -EBUSY; + if (time_after(jiffies, timeout)) { + ret = -EBUSY; + goto out; + } range.notifier_seq = mmu_interval_read_begin(range.notifier); mmap_read_lock(mm); @@ -587,7 +596,7 @@ static int nouveau_range_fault(struct nouveau_svmm *svmm, if (ret) { if (ret == -EBUSY) continue; - return ret; + goto out; } mutex_lock(&svmm->mutex); @@ -606,6 +615,9 @@ static int nouveau_range_fault(struct nouveau_svmm *svmm, svmm->vmm->vmm.object.client->super = false; mutex_unlock(&svmm->mutex); +out: + mmu_interval_notifier_remove(¬ifier->notifier); + return ret; } @@ -727,14 +739,8 @@ nouveau_svm_fault(struct nvif_notify *notify) } notifier.svmm = svmm; - ret = mmu_interval_notifier_insert(¬ifier.notifier, mm, - args.i.p.addr, args.i.p.size, - &nouveau_svm_mni_ops); - if (!ret) { - ret = nouveau_range_fault(svmm, svm->drm, &args.i, - sizeof(args), hmm_flags, ¬ifier); - mmu_interval_notifier_remove(¬ifier.notifier); - } + ret = nouveau_range_fault(svmm, svm->drm, &args.i, + sizeof(args), hmm_flags, ¬ifier); mmput(mm); limit = args.i.p.addr + args.i.p.size; -- 2.20.1 _______________________________________________ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau