From owner-freebsd-drivers@freebsd.org Mon Jan 22 13:48:02 2018 Return-Path: Delivered-To: freebsd-drivers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 9EB86EC1DBD for ; Mon, 22 Jan 2018 13:48:02 +0000 (UTC) (envelope-from officem4790@gmail.com) Received: from mail-io0-x229.google.com (mail-io0-x229.google.com [IPv6:2607:f8b0:4001:c06::229]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 6820A7C902 for ; Mon, 22 Jan 2018 13:48:02 +0000 (UTC) (envelope-from officem4790@gmail.com) Received: by mail-io0-x229.google.com with SMTP id f34so9449205ioi.13 for ; Mon, 22 Jan 2018 05:48:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=fTogg40cfgSWDwiJ3OVEW3t9PiOlc2RdIt75sDsmeTg=; b=tGJnUmZtD4fY5UNSdzihLlQckhvWMOm/9+Orc9/nMjMtmVLDEQcZjZ8JW8TtnwmAy4 myBqi3i/G671XjNyzVCJZ6YXdW2ypLfJfKTXRKHW2JUvjAiOjn1qyu+b8QkAyLZEs+KP WfZl8yOMneUvkXvDBBmKcQFkLipEKNNdtE3OAOjpy89mb2gqYzPNUlex3RPceB3+OTj/ ufLxpHa/RnNVpSKOnlaJiavm6vOey0oJyDWTr6NpC6VAo35Xeg9tzZWrnf7foElpRHoC SEcxmNWolWquluHjDBBqR0kZ4mOaNPAoh+PoQ0oF1HoAD7SMpNieN/LOkIDrIMqrTKwT FtWg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=fTogg40cfgSWDwiJ3OVEW3t9PiOlc2RdIt75sDsmeTg=; b=cH4TwRBUgsCOhTCO2UMswNKD66wSc8NQRlRabcAyrfl5z+Z1A3lcMyi5cZsKxFn6gT uWLheWyoHOuRiwc2yqSJ9Ql/tobLjhTgNXbPJibILDDpI7mrfkd5EVDT+8AyNegc7IXg c2gyZoOD8WFgBa2ib+PV1t3RWe42mRaLNxtLY+uj7+3Spbo4m1oDWubhP7LC03T1l7WV rkyKBR44ax2nXVLEjzU9fzHb2eyIFY0JhhTqqrwCVQWAxXlfDuTJuqP3Y6XGab7B8pQ2 kSW8ktrphb1zPBeUc+B9pfnjeaEHy4R4FtQCG+I0JohXhc20FrPAeHPwqFxqUIFVGLXK ldhg== X-Gm-Message-State: AKwxytcTOlP/IGT1nK1nAWwik9qd2Qqg3vtZCb06BffTfAERUCjkDI/3 n0gsm1MW1LL4sg3b/eU3KpY8axRPj/Y8yYs7thnWww== X-Google-Smtp-Source: AH8x226dmZBS3CTJGyq672G1xmX3zHddK/82W+q76m+e2GUqRP+6A84c1/47P0W/S34ODMdd3yDcl0s7NLPbcSWtZxE= X-Received: by 10.107.147.3 with SMTP id v3mr4104162iod.78.1516628881376; Mon, 22 Jan 2018 05:48:01 -0800 (PST) MIME-Version: 1.0 Received: by 10.107.28.194 with HTTP; Mon, 22 Jan 2018 05:48:00 -0800 (PST) From: Office Manager Date: Mon, 22 Jan 2018 15:48:00 +0200 Message-ID: Subject: Creating a KLD to dump memory To: freebsd-drivers@freebsd.org Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.25 X-BeenThere: freebsd-drivers@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Writing device drivers for FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Jan 2018 13:48:02 -0000 Hi, I'm trying to create a kernel module to dump the memory of a machine like lime . Right now I'm using memrw implementation to read the physical memory, my problem with this method is the garbage pages that return a page filled with 0xFF's. How can I create a dump containing only the physical available memory? e.g my machine has 256mb so I want a 256mb memory dump. Thanks. From owner-freebsd-drivers@freebsd.org Mon Jan 22 14:14:49 2018 Return-Path: Delivered-To: freebsd-drivers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id A9C49EC3260 for ; Mon, 22 Jan 2018 14:14:49 +0000 (UTC) (envelope-from wlosh@bsdimp.com) Received: from mail-it0-x235.google.com (mail-it0-x235.google.com [IPv6:2607:f8b0:4001:c0b::235]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 818E47DCD6 for ; Mon, 22 Jan 2018 14:14:49 +0000 (UTC) (envelope-from wlosh@bsdimp.com) Received: by mail-it0-x235.google.com with SMTP id q8so9857318itb.2 for ; Mon, 22 Jan 2018 06:14:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20150623.gappssmtp.com; s=20150623; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=j1WIVEjfsOXKsbP5P5ZlU+aswXVMQ/I85k5RIyD9oIA=; b=1aS8BMvKJU44wWATvA6sY8ZvcIoneLSl7CXXuADK3ve366Yr52RDVve+yy7NVfQfh9 jivSHimBZ9ByIFvNZyNMZE2MfdJOW4pqfwuM/D2oUo1FAvjqnDaxqrEJZwnZQdogalc5 F98BnxszV1QVIH2YRpK5g6buEVHAPLVU//VaYPzt2RR2xI74ER2HceE2++2Y4Yt3gNE0 HX9XJLEpiQ1XGJveXOwQooMhTBMVMT/1KJBaqtIs/PotmwvTsYHB6jT3+orRP5F8nXrt LCfi0Y+KSZBCZeRzCsbH53lodXyaFdy8PwwoSedOsgFkp/6wxYEdoAwA56nKt+YrR2i8 +yKw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=j1WIVEjfsOXKsbP5P5ZlU+aswXVMQ/I85k5RIyD9oIA=; b=qAfjk49j66onxP93dBgrnbREfxm4sD2Ik2AL6SkcQgjM/Lr+dZ0CgCvW21NE26une5 SxIDn5IsTIf6eKYzHkxyPutmrtTXl4jg6sQsc/BuJ8hNtYIT10awokvK2iRZBy99xWE+ LLSkNaQFhsY4rzWEWrd3fsuyrGsa6bCnTjmxMai8pkJudfTwGy1OOW3NYAQPGdam/tXh sJDh8TNVbVwcgm2P+Ax7RWAzf5CYeEvxnVVc8N9Bet0av5s0qU25N+n4X+G/GTjrwlE4 1xMvKcBUgss5TY+wIdybWc+tkKTH9JsLXLSHUjJ/AJtZb41VYmkqnlCYtVSdwSNf6Qwo Dq0g== X-Gm-Message-State: AKwxyte/tygXSD6a92UJEkQQxTzIeFS4YtvC1vxDbodSlsT9EIAghovZ ZBog6kkDPbxEl3bl862vgBpdgVGGnSzWZTfFdJL/WQ== X-Google-Smtp-Source: AH8x22582EGvhs4wQJCT0XwlQ7bsDkVZhfA3oSfuJ/M1RhlWhEW/MrTsW85Ye6wpKNwP8eIWPx1gVrm65pgXiy5tTs0= X-Received: by 10.36.74.200 with SMTP id k191mr8731980itb.69.1516630488661; Mon, 22 Jan 2018 06:14:48 -0800 (PST) MIME-Version: 1.0 Sender: wlosh@bsdimp.com Received: by 10.79.201.67 with HTTP; Mon, 22 Jan 2018 06:14:47 -0800 (PST) X-Originating-IP: [50.253.99.174] In-Reply-To: References: From: Warner Losh Date: Mon, 22 Jan 2018 07:14:47 -0700 X-Google-Sender-Auth: BSnz0UnRrUZpG369eViSeH9eYn4 Message-ID: Subject: Re: Creating a KLD to dump memory To: Office Manager Cc: freebsd-drivers@freebsd.org Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.25 X-BeenThere: freebsd-drivers@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Writing device drivers for FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Jan 2018 14:14:49 -0000 On Mon, Jan 22, 2018 at 6:48 AM, Office Manager wrote: > Hi, > I'm trying to create a kernel module to dump the memory of a machine like > lime . > Right now I'm using memrw implementation to read the physical memory, my > problem with this method is the garbage pages that return a page filled > with 0xFF's. > How can I create a dump containing only the physical available memory? > > e.g my machine has 256mb so I want a 256mb memory dump. > Study the code that implements /dev/mem. It's in mem.c in the arch dependent directory in the kernel. Warner From owner-freebsd-drivers@freebsd.org Mon Jan 22 15:13:28 2018 Return-Path: Delivered-To: freebsd-drivers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3B413EC5A92 for ; Mon, 22 Jan 2018 15:13:28 +0000 (UTC) (envelope-from officem4790@gmail.com) Received: from mail-it0-x236.google.com (mail-it0-x236.google.com [IPv6:2607:f8b0:4001:c0b::236]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 01BD17FF26 for ; Mon, 22 Jan 2018 15:13:28 +0000 (UTC) (envelope-from officem4790@gmail.com) Received: by mail-it0-x236.google.com with SMTP id w14so10054327itc.3 for ; Mon, 22 Jan 2018 07:13:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=ZlqC0W6yhBkjIQczbjAxJCH9PeYdpreiGzBFQ4Ry2OE=; b=Ro9QYkRc+Hep8UKKFQbwBsGeRMvQfdiJw7hHdxtROLK4tdEny/C9pNenTaSYCRUBXo 3qkLqLtpqQj5wfK+SOnY/fEVojxnagmHsBDFdrK4tqCvjJJqWEdZkee9lRyEo99HS5T4 W0eg9dgDsP6lBWceLWx3uy0ktD7Tuth/FDxrEVPjHqGhOlWku7dCxEnb+EJ2fQ2gxht7 M9BSbS1PhqgTwoq6zZWVxy3iV1uRP+SCLJQeuE2UOWxulHEwOzk3UztEbbv3v49MzqWM ssG7LsHOxguj58ZW3q282MBwLAOUT7FgQ2xKY0vvkm5XEObAxFl86p39pE/hnZ5aMtsM jYQQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=ZlqC0W6yhBkjIQczbjAxJCH9PeYdpreiGzBFQ4Ry2OE=; b=jlRVTUJLeZhiqfwJh/D1ERPXucwby4CRsqN3yYx8ryQe1zprHOv6tGWlGnva6GNHP1 EVm8RlP6gL6r87OWdnMFMZyjCGkp9QEiz5eBeeaqKXOEcRpDWMFrieJD8z1jWg9AUFsf yJ/IYu++Nv5+T85R0VV/6Gs3ukpY6QtEVj9NQhuKqKVHOVcy3InZJCXlfpnvJLnFffL4 u3bWRKgCib9gRmKqb308VJzZdlp6Ck/RV9GMUCVdtD89joFzVO1nALHPx8L+H4wLHeHU o+Zs3XarpIQ5XTMdcevtROIsrlVY94cvb+llW1hkvHKxox7fkDW2/Sjt8SmGj6qoVLvF lHVA== X-Gm-Message-State: AKwxytd35wCBZ7fSXLuAjZ+GE0+UCSJKYqjhvqEdGju/uom0J2U5xmoI aVL1TVsOEKukctTN8v5WdKGf0029oL9e0Y0+ckk= X-Google-Smtp-Source: AH8x227lMispOR09ng2ARUthT/LTpcSA/Ogi11++ouw/R9ChO7HGSFr4dBTVwQw9F3UA+geu+lfy9IykMPBZOqprHlM= X-Received: by 10.36.123.9 with SMTP id q9mr7709836itc.21.1516634007276; Mon, 22 Jan 2018 07:13:27 -0800 (PST) MIME-Version: 1.0 Received: by 10.107.28.194 with HTTP; Mon, 22 Jan 2018 07:13:26 -0800 (PST) In-Reply-To: References: From: Office Manager Date: Mon, 22 Jan 2018 17:13:26 +0200 Message-ID: Subject: Fwd: Creating a KLD to dump memory To: freebsd-drivers@freebsd.org Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.25 X-BeenThere: freebsd-drivers@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Writing device drivers for FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Jan 2018 15:13:28 -0000 ---------- Forwarded message ---------- From: Office Manager Date: Mon, Jan 22, 2018 at 4:52 PM Subject: Re: Creating a KLD to dump memory To: Warner Losh Hi, As I said I'm using memrw which is /dev/mem code to read and write memory. My problem is in 32bit the dump outputs to about 4gb(size of all possible mappings of physical address) /dev/mem as well gives 0xFF to unmapped physical pages, I want to dump only mapped physical pages. On Mon, Jan 22, 2018 at 4:14 PM, Warner Losh wrote: > > > On Mon, Jan 22, 2018 at 6:48 AM, Office Manager > wrote: > >> Hi, >> I'm trying to create a kernel module to dump the memory of a machine like >> lime . >> Right now I'm using memrw implementation to read the physical memory, my >> problem with this method is the garbage pages that return a page filled >> with 0xFF's. >> How can I create a dump containing only the physical available memory? >> >> e.g my machine has 256mb so I want a 256mb memory dump. >> > > Study the code that implements /dev/mem. It's in mem.c in the arch > dependent directory in the kernel. > > Warner > From owner-freebsd-drivers@freebsd.org Mon Jan 22 22:11:13 2018 Return-Path: Delivered-To: freebsd-drivers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 98015ED852E; Mon, 22 Jan 2018 22:11:13 +0000 (UTC) (envelope-from David.Somayajulu@cavium.com) Received: from NAM02-CY1-obe.outbound.protection.outlook.com (mail-cys01nam02on0606.outbound.protection.outlook.com [IPv6:2a01:111:f400:fe45::606]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (Client CN "mail.protection.outlook.com", Issuer "Microsoft IT TLS CA 4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 454C2715FC; Mon, 22 Jan 2018 22:11:13 +0000 (UTC) (envelope-from David.Somayajulu@cavium.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=CAVIUMNETWORKS.onmicrosoft.com; s=selector1-cavium-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: cavium.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2518893d-ad6d-4a78-5a4e-08d561e50b7f X-MS-Exchange-CrossTenant-originalarrivaltime: 22 Jan 2018 22:11:10.9843 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 711e4ccf-2e9b-4bcf-a551-4094005b6194 X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY2PR07MB1474 X-BeenThere: freebsd-drivers@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Writing device drivers for FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Jan 2018 22:11:13 -0000 Hi Meny, Does OFED in FreeBSD currently support NvMe over Fabrics ? Thanks David S. -----Original Message----- From: Meny Yossefi [mailto:menyy@mellanox.com]=20 Sent: Tuesday, January 16, 2018 5:27 AM To: Somayajulu, David ; freebsd-net@FreeBSD.or= g Subject: RE: Questions on OFED in FreeBSD Hi David,=20 I think there's a misunderstanding here. Let me try and clear it. First OFED version introduced in FreeBSD9 was indeed ofed-1.5.3.=20 Future updates were based on Linux kernel and not the OpenFabrics versionin= g system. FreeBSD11 should currently have something similar to Linux v3.10 if I'm not= mistaken. Last big update in FreeBSD12 was based on Linux v4.9. Hopefully we can MFC it completely to FreeBSD11-STABLE. Last but not least - Yes, HEAD supports RoCEv2. Meny Hi Meny, Thanks a lot for the reply and the information. I have couple of additional questions. > 4. Am I correct that the OFED version on FreeBSD 11 is 1.5.3 ? >[MY] No. We did an upgrade in FreeBSD11 a while back. If I'm not mistaken,= FreeBSD11's OFED is currently based on version 2.0+ As per https://emea01.safelinks.protection.outlook.com/?url=3Dhttp%3A%2F%2F= downloads.openfabrics.org%2FOFED%2F&data=3D02%7C01%7Cfreebsd-commits-tracke= r%40mellanox.com%7Ca9533172edf24431e8a308d55c3f128f%7Ca652971c7d2e4d9ba6a4d= 149256f461b%7C0%7C1%7C636516348321604768&sdata=3Dit2anKZ%2FjPBnUJl%2FH3cfaN= 15h%2Fps12F4CR%2B3zETyNIE%3D&reserved=3D0 the version following OFED versi= on 1.5.4 is 3.2. Just curious what 2.0+ version is ? Am I correct that HEAD supports RoCE v2 ? Thanks David S. (davidcs@freebsd.org) -----Original Message----- From: Meny Yossefi [mailto:menyy@mellanox.com] Sent: Sunday, January 14, 2018 2:11 AM To: Somayajulu, David ; freebsd-net@freebsd.or= g Subject: RE: Questions on OFED in FreeBSD Hi David, Answers embedded below. -Meny -----Original Message----- From: owner-freebsd-net@freebsd.org [mailto:owner-freebsd-net@freebsd.org] = On Behalf Of Somayajulu, David Sent: Tuesday, January 09, 2018 8:08 PM To: freebsd-net@freebsd.org Subject: Questions on OFED in FreeBSD Hi, 1. Is RoCE v2 supported of FreeBSD 11 release or 11_stable ? [MY] Not currently, though we do have plans adding it in the near future 2. How does one figure out the OFED version in a FreeBSD kernel? [MY] Unfortunately, OFED version is not maintained. Some files do state a v= ersion, but I wouldn't trust that too much 3. Since OFED on HEAD is synced to Linux 4.9 in kernel.org, I presume th= at it is OFED version 4.8. Am I correct ? [MY] 4.9+ 4. Am I correct that the OFED version on FreeBSD 11 is 1.5.3 ? [MY] No. We did an upgrade in FreeBSD11 a while back. If I'm not mistaken, = FreeBSD11's OFED is currently based on version 2.0+ 5. Are there any plans to backport OFED from HEAD to Stable_11? [MY] Yes. Thanks David S. 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