linux-kernel - Re: regression for m68k/coldfire

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Date:   Sat, 4 Feb 2017 12:03:00 +1000
From:   Greg Ungerer <gerg@...inux.org>
To:     Laurent Vivier <laurent@...ier.eu>
Cc:     Waldemar Brodkorb <wbx@...nadk.org>,
        John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
        Nikita Yushchenko <nikita.yoush@...entembedded.com>,
        linux-kernel@...r.kernel.org, linux-m68k@...r.kernel.org,
        uclinux-dev@...inux.org, geert@...ux-m68k.org
Subject: Re: regression for m68k/coldfire

Hi Laurent,

On 04/02/17 01:22, Laurent Vivier wrote:
> Le 03/02/2017 à 16:17, Waldemar Brodkorb a écrit :
[snip]
>> Btw: Laurent, are you m68k with mmu support are going to be included
>> upstream? I always carry an old binary for any m68k with mmu testing.
>
> I'm working to have the FPU included for now, that will allow to have
> the linux-user qemu enabled for 680x0 upstream.
>
> I have a 68040 MMU implementation that I will send after this step.
> I didn't have a look to the ColdFire MMU (is there one?), but as 68040
> is not the same as the 68030 one, I don't expect it works with coldfire.

There is a ColdFire MMU in some v4 ColdFire parts, for example
the 547x, 548x, 5441x and 5445x families. It is not compatible with
the older 68020/86030/68040 MMU. It is supported in mainline Linux -
at least for the 547x and 548x parts.

It would be really nice to have support for ColdFire MMU in QEMU :-)

Regards
Greg