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From: Arnaud Patard (Rtp) <arnaud.patard@rtp-net.org>
Subject: Re: [Qemu-devel] [PATCH] fix configure for mips o32
References: <87prdlv6wf.fsf@lechat.rtp-net.org>
	<200906031546.00539.paul@codesourcery.com>
	<87ws7ttkch.fsf@lechat.rtp-net.org>
	<200906031622.48342.paul@codesourcery.com>
Date: Thu, 04 Jun 2009 11:18:59 +0200
In-Reply-To: <200906031622.48342.paul@codesourcery.com> (Paul Brook's message
	of "Wed\, 3 Jun 2009 16\:22\:47 +0100")
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To: Paul Brook <paul@codesourcery.com>
Cc: qemu-devel@nongnu.org

Paul Brook <paul@codesourcery.com> writes:

Hi,

> 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.
>

fwiw, found out where I read that. At
http://www.mips.com/products/processors/hard-ip-cores/4kc-hard-ip-core/.


Arnaud