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From: Paul Brook <paul@codesourcery.com>
Subject: Re: [Qemu-devel] [PATCH] fix configure for mips o32
Date: Wed, 3 Jun 2009 16:22:47 +0100
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To: qemu-devel@nongnu.org
Cc: "Arnaud Patard (Rtp)" <arnaud.patard@rtp-net.org>

On Wednesday 03 June 2009, Arnaud Patard wrote:
> Paul Brook <paul@codesourcery.com> writes:
> > On Wednesday 03 June 2009, Arnaud Patard wrote:
> >> The commit 1ad2134f914dfd4c8f92307c94c9a5a1e28f0059 is defining
> >> target_phys_bits and set it to 64 for all mips machines including mipsel
> >> machines which are 32 bit. This patch set it to 32.
> >
> > MIPS32 CPUs have a 36-bit physical address space. That's what the old
> > code said anyway.
>
> Is there more information than that in the old code ? I really thought
> mips32 4Kc have 32-bit address paths not 36.

I suspect you're confusing physical and virtual addresses.

> I really fear that setting 64 will break them.

If this were true they'd already be broken on 64-bit hosts.

Paul