From owner-freebsd-current@freebsd.org Sun Nov 22 02:43:50 2015 Return-Path: Delivered-To: freebsd-current@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 0B997A35918; Sun, 22 Nov 2015 02:43:50 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-ig0-x22d.google.com (mail-ig0-x22d.google.com [IPv6:2607:f8b0:4001:c05::22d]) (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 CEE741845; Sun, 22 Nov 2015 02:43:49 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: by igbxm8 with SMTP id xm8so36866586igb.1; Sat, 21 Nov 2015 18:43:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:date:message-id:subject:from:to:content-type; bh=dPHbQJW+z97b66lM5zqDyBdu8zLNLLZoseQjnTV2tPg=; b=REjQvy1a7aNw7cyr68ingURDteR5HMfGAiW6525efe8PNdAl89YaudAcWZbK0NT6m7 mREB5xgwyIq2FEdvoEjyq4T64HiWqg4ZzMLMxUJLQU8bOeNSEP3Uv+zCRXim0FU40W1p 3mzxBYpOcesZj5cJB+mTP3ss0ns5vigUOZbUoo8En4W75fhL2lrwMsuBZLxK5q5TWCgM /0iJMQ4e5YOgY7Qe7S6MRPNe/LxhRyfQ/8WlXltt0vVx6+wH9vUFv9hpqxHjw3f6h5Fl +g86tNoqNsc0IW66PDB/EsAHOpE4yGv4XGWKmcn7cD0pLAWYX0mZWX+nlhM6SjqKBR0C atbg== MIME-Version: 1.0 X-Received: by 10.50.6.36 with SMTP id x4mr6075076igx.61.1448160229086; Sat, 21 Nov 2015 18:43:49 -0800 (PST) Sender: adrian.chadd@gmail.com Received: by 10.36.217.196 with HTTP; Sat, 21 Nov 2015 18:43:49 -0800 (PST) Date: Sat, 21 Nov 2015 18:43:49 -0800 X-Google-Sender-Auth: SAkhFwiNEq-rop0AsV-x08WL8AU Message-ID: Subject: note: mips malta kernels now support up to 2gb of RAM From: Adrian Chadd To: "freebsd-mips@freebsd.org" , freebsd-current Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 22 Nov 2015 02:43:50 -0000 hiya, I've just added support to our malta implementation to handle RAM up to 2G. The qemu-system-mips* support for malta is limited to a max of 2G. It used to be limited to 256MB RAM. This is useful for 32 bit mips as it gives us a stress test for the non-all-direct-mapped case of > 256MB RAM. This means we can get much more coverage for VM/pmap changes on mips32 and mips64. (It also makes compiling a lot easier, as it's not constantly paging. :-) Note: due to "math", you can't use 2048MB of RAM as your specification on 32 bit MIPS;, you need to specify just a touch below 2 gig or the math overflows a 32 bit paddr value and you only get 256MB of RAM. I'll go fix this at some point soon. This now makes mips32/mips64 testing much nicer. :-) Next up - why SMP doesn't work! Thanks, -a