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=-5.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,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 59B04C433DB for ; Wed, 10 Feb 2021 00:17:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1A88C64E42 for ; Wed, 10 Feb 2021 00:17:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234270AbhBJARc (ORCPT ); Tue, 9 Feb 2021 19:17:32 -0500 Received: from mail29.static.mailgun.info ([104.130.122.29]:39412 "EHLO mail29.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233992AbhBIUsS (ORCPT ); Tue, 9 Feb 2021 15:48:18 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1612903639; h=Content-Transfer-Encoding: Content-Type: MIME-Version: Date: Message-ID: Cc: To: Subject: From: Sender; bh=tRp7lRzu7apqQnGrN4xD/Ckoz8eu1Epqqju1tUhZkAA=; b=uyI05LYnqzN4Hj/vqaMFjHU2j1sze6Ocdm8BvdqjofuTZNQqy0FZVBhqpogfVtM9v8MqAM/O sZjrpHQjBbcCI1naruWNdjRxSehsASm1hvfr1et0Thj/8jum20uCVYulwgf2WUfppaWVJzXk t0o5MIPsL/GdNpyXoetZ1dHA0gM= X-Mailgun-Sending-Ip: 104.130.122.29 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-n02.prod.us-east-1.postgun.com with SMTP id 6022f4be81f6c45dce7be36c (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Tue, 09 Feb 2021 20:46:54 GMT Sender: mojha=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id C454CC43464; Tue, 9 Feb 2021 20:46:53 +0000 (UTC) Received: from [192.168.29.2] (unknown [49.37.87.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: mojha) by smtp.codeaurora.org (Postfix) with ESMTPSA id E25EBC433CA; Tue, 9 Feb 2021 20:46:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org E25EBC433CA 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=mojha@codeaurora.org From: Mukesh Ojha Subject: Pstore : Query on using ramoops driver for DDR To: lkml Cc: keescook@chromium.org, Anton Vorontsov , tony.luck@intel.com, ccross@android.com Message-ID: Date: Wed, 10 Feb 2021 02:16:08 +0530 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.7.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi All, Can we use existing backend pstore ram driver (fs/pstore/ram.c) for DDR instead of SRAM ? Was the current driver written only to support persistant RAM like SRAM or it can accept further change to support DDR, If we have a mechanism to copy stored data from DDR to external device after the crash. Thanks, Mukesh