linux-kernel - Re: [PATCH 00/15] MIPS Malta DT Conversion

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20150525132930.GR13811@NP-P-BURTON>
Date:	Mon, 25 May 2015 14:29:30 +0100
From:	Paul Burton <paul.burton@...tec.com>
To:	Rob Landley <rob@...dley.net>
CC:	<linux-mips@...ux-mips.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	"Jiri Slaby" <jslaby@...e.cz>, Paolo Bonzini <pbonzini@...hat.com>,
	Leonid Yegoshin <Leonid.Yegoshin@...tec.com>,
	Kernel Mailing List <linux-kernel@...r.kernel.org>,
	James Hogan <james.hogan@...tec.com>,
	"Steven J. Hill" <Steven.Hill@...tec.com>,
	Hannes Reinecke <hare@...e.de>,
	Andrew Bresticker <abrestic@...omium.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Ralf Baechle" <ralf@...ux-mips.org>,
	Qais Yousef <qais.yousef@...tec.com>,
	<linux-serial@...r.kernel.org>,
	Markos Chandras <markos.chandras@...tec.com>,
	Christoph Hellwig <hch@....de>, Michal Marek <mmarek@...e.cz>,
	Jason Cooper <jason@...edaemon.net>,
	"David S. Miller" <davem@...emloft.net>,
	"Bart Van Assche" <bvanassche@....org>,
	Jeffrey Deans <jeffrey.deans@...tec.com>,
	"David Daney" <david.daney@...ium.com>
Subject: Re: [PATCH 00/15] MIPS Malta DT Conversion

On Mon, May 25, 2015 at 02:59:31AM -0500, Rob Landley wrote:
> On Fri, May 22, 2015 at 10:50 AM, Paul Burton <paul.burton@...tec.com> wrote:
> > This series begins converting the MIPS Malta board to use device tree,
> > which is done with a few goals in mind:
> >
> >   - To modernise the Malta board support, providing a cleaner example to
> >     people referencing it when bringing up new boards and reducing the
> >     amount of code they need to write.
> >
> >   - To make the code at the board level more generic with the eventual
> >     aim of sharing it between multiple boards & allowing for
> >     multi-platform kernel binaries. Although this series doesn't result
> >     in the kernel reaching those goals, it is a step in that direction.
> >
> >   - To result in a more maintainable kernel through a combination of the
> >     above.
> 
> How would I go about testing this under qemu?
> 
> (Especially the "more than 256 megs ram" part. :)

Hi Rob,

With the series applied you can start from malta_defconfig, enable
CONFIG_HIGHMEM, build your kernel then run QEMU like so:

  $ qemu-system-mipsel -kernel vmlinux -m 1G -append memsize=1G -serial stdio

If you apply this patch to QEMU:

  https://www.mail-archive.com/qemu-devel@nongnu.org/msg297902.html

(or if you use a real board) then you can omit the memsize argument from
the kernel command line (ie. the -append) and just do:

  $ qemu-system-mipsel -kernel vmlinux -m 1G -serial stdio

The kernel will then retrieve the correct memory size from the
bootloader-provided environment and make use of all the available RAM.

Thanks,
    Paul

Download attachment "signature.asc" of type "application/pgp-signature" (820 bytes)