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=-6.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 E6866C433E7 for ; Mon, 12 Oct 2020 23:06:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9283B20757 for ; Mon, 12 Oct 2020 23:06:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="b5uPDGsl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390967AbgJLXGS (ORCPT ); Mon, 12 Oct 2020 19:06:18 -0400 Received: from z5.mailgun.us ([104.130.96.5]:18557 "EHLO z5.mailgun.us" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731023AbgJLXGS (ORCPT ); Mon, 12 Oct 2020 19:06:18 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1602543977; h=Content-Transfer-Encoding: MIME-Version: Message-Id: Date: Subject: Cc: To: From: Sender; bh=z6t7HV4bH2v0mmuzaitSoFrMCe6hQz3tk9NSin7efdk=; b=b5uPDGsllsijZG1b8QZ++VN7iAIiw+iBHus1EACmqQ9MfrE3v/SoOMXB16sc4P8cS4DUl2gx dDqBKS9lBs9vYYPdQrkW2pVfR+2wQNjJ7B1xVlXRLv2jXjAOV0QB6lSQ897d8uw60gfaCiVF KTt55YcHGQoeo+Ud7EqPKeSd4Bg= X-Mailgun-Sending-Ip: 104.130.96.5 X-Mailgun-Sid: WyI0MWYwYSIsICJsaW51eC1rZXJuZWxAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n01.prod.us-west-2.postgun.com with SMTP id 5f84e168319d4e9cb5f3e948 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Mon, 12 Oct 2020 23:06:16 GMT Sender: sudaraja=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id C3FB9C433CB; Mon, 12 Oct 2020 23:06:16 +0000 (UTC) Received: from th-lint-014.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: sudaraja) by smtp.codeaurora.org (Postfix) with ESMTPSA id 3F5BBC433C9; Mon, 12 Oct 2020 23:06:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 3F5BBC433C9 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=sudaraja@codeaurora.org From: Sudarshan Rajagopalan To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Sudarshan Rajagopalan Subject: [PATCH v3] arm64/mm: add fallback option to allocate virtually contiguous memory Date: Mon, 12 Oct 2020 16:05:57 -0700 Message-Id: X-Mailer: git-send-email 2.25.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org V1: The initial patch used the approach to abort at the first instance of PMD_SIZE allocation failure, unmaps all previously mapped sections using vmemmap_free and maps the entire request with vmemmap_populate_basepages to allocate virtually contiguous memory. https://lkml.org/lkml/2020/9/10/66 V2: Allocates virtually contiguous memory only for sections that failed PMD_SIZE allocation, and continous to allocate physically contiguous memory for other sections. https://lkml.org/lkml/2020/9/30/1489 V3: Addressed trivial review comments. Pass in altmap to vmemmap_populate_basepages. Sudarshan Rajagopalan (1): arm64/mm: add fallback option to allocate virtually contiguous memory arch/arm64/mm/mmu.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project