From owner-freebsd-arm@FreeBSD.ORG Mon Nov 24 15:17:42 2014 Return-Path: Delivered-To: freebsd-arm@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id B2B2196; Mon, 24 Nov 2014 15:17:42 +0000 (UTC) Received: from mail-wi0-x234.google.com (mail-wi0-x234.google.com [IPv6:2a00:1450:400c:c05::234]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 443B71BC; Mon, 24 Nov 2014 15:17:42 +0000 (UTC) Received: by mail-wi0-f180.google.com with SMTP id n3so6145557wiv.7 for ; Mon, 24 Nov 2014 07:17:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=TDlWwbY2O1kPkEZBebYZVgtHc2t5CikUL1BaqFUZpM4=; b=JaTfwIjVU5Zm8E2iWsmNFas9iKC7DRs8IIw1QpK7WXqgqMd0JatAi7gxxalDq6EMeH Izby/ISfBTbKq2lNQsDdnUjoNFcPUI2FxfhMDmSLsit8OvatBzNu00dK++GxDQ9ho5Ud DIau0Y4wwJ7tYLlYWgMVe3R27qK96DogiBEXAWz+bm3QVXJd8oJhSJKNSr4h0an1PwYB suaHHACPRRjWEPvbeDLf/HfcMvWGwko+jxdiOn3DPSxH+a2Gj91YHqssKFuxORbmqryT 66ZZZH5Z5f25+NeKvj/asGC5VsAT3RGBaeUNBRJ+qN0cmO1REJVHvO0dijKNDPZVaDXM Lncg== MIME-Version: 1.0 X-Received: by 10.180.85.198 with SMTP id j6mr22131148wiz.23.1416842260481; Mon, 24 Nov 2014 07:17:40 -0800 (PST) Sender: zbodek@gmail.com Received: by 10.216.123.1 with HTTP; Mon, 24 Nov 2014 07:17:40 -0800 (PST) In-Reply-To: <1416840814.1147.380.camel@revolution.hippie.lan> References: <20141113125236.b16cd4e5f0e339eac0494cd4@ulrich-grey.de> <20141115143444.5ad037548e06f289d2532fb7@ulrich-grey.de> <20141119225903.81fbbc7809093a0e6e0de9d5@ulrich-grey.de> <20141120151900.a68c6d8316b96a62cb65d17a@ulrich-grey.de> <20141121115941.54d4e36b103341c3adf7eb36@ulrich-grey.de> <20141124132733.4e96b906f0d1ab69969dddd9@ulrich-grey.de> <1416840814.1147.380.camel@revolution.hippie.lan> Date: Mon, 24 Nov 2014 16:17:40 +0100 X-Google-Sender-Auth: OgLpQzhlKbm4OmB5yGBNcLqVy0I Message-ID: Subject: Re: Test Run with Alternative pmap Implementation From: Zbigniew Bodek To: Ian Lepore Content-Type: text/plain; charset=UTF-8 Cc: "freebsd-arm@freebsd.org" X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 24 Nov 2014 15:17:42 -0000 2014-11-24 15:53 GMT+01:00 Ian Lepore : > On Mon, 2014-11-24 at 13:27 +0100, Ulrich Grey wrote: >> Hello, >> >> as a starting point I have build an image (crochet, wandboard-quad) with >> the source tree from here (751adfd(master)): >> >> https://github.com/strejda/freebsd >> >> Then I build the kernel with new pmap and rebuild the whole systen. >> The system I used for the test run is entirely build on the >> wandboard-quad. >> [...] > > I've also been testing those pmap changes this weekend. The only change > I made was to add options ARM_NEW_PMAP and NKPT2PG=64 to the kernel > config. In particular, I did not change VM_MEMATTR_UNCACHEABLE (so that > in effect I'm also testing the recent busdma changes). > > I've had two wandboard quads doing builds continuously all weekend. I > did the builds that have previously been reported as problems here -- > buildworld -j10, ports libX11, plus a lot of other ports including much > of the full xorg (until it ran into some x86 device drivers and died), > some of libreoffice (it had a problem that wasn't related to crashing or > anything), python, bash, emacs, boost, rsync. > > After all that I just set both boards to continuously doing "rm > -rf /usr/obj/* ; make -j5 buildworld" in a loop, and they're still > running. One is using an SSD drive and the other is using NFS. > > In all that building all weekend the only glitches I've seen are this: > > warning: pmap_remove_pages called with non-current pmap > > that appeared twice on the board using NFS root. > > For anyone else wanting to test, there is currently one conflict when > applying the patches, in busdma_machdep-v6.c, because some of the > changes in the patch have already been applied. Just resolve the > conflict by skipping that file / restoring the original unpatched file. > > This stuff is looking really good. It wouldn't hurt at all if some more > people were testing it, especially on other hardware including rpi and > beaglebone. > Hello, This new pmap implementation looks VERY good indeed. However I was not able to boot this kernel on Armada XP and currently I don't have time to debug this. On the other hand after e-mails with crash reports on Wandbord I did similar (buildworld, port build) tests on AXP and it didn't crash. In particular it survived 2 days of buildworld in loop. I wonder, what is the functional difference between AXP and other that prevents those crashes. Ian, are you planning to replace the pmap with the new implementation? Best regards zbb