Re: [Qemu-devel] [PATCH] fix configure for mips o32

[M. Warner Losh]

In message: <address@hidden>
            Arnaud Patard (Rtp) <address@hidden> writes:
: Paul Brook <address@hidden> writes:
: 
: Hi,
: 
: > On Wednesday 03 June 2009, Arnaud Patard wrote:
: >> Paul Brook <address@hidden> 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/.

None-the-less, mipsel for arc has 36-bit addresses.  The patch is bad.

Warner