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Re: [PATCH v2 1/2] MIPS: Add device tree support to MIPS

To: Ralf Baechle <>
Subject: Re: [PATCH v2 1/2] MIPS: Add device tree support to MIPS
From: Stephen Rothwell <>
Date: Thu, 19 Aug 2010 01:18:56 +1000
Cc: Grant Likely <>, "Dezhong Diao (dediao)" <>,,, David Daney <>, "David VomLehn (dvomlehn)" <>
In-reply-to: <>
Original-recipient: rfc822;
References: <> <> <> <> <>
Hi Ralf,

On Wed, 18 Aug 2010 15:39:26 +0100 Ralf Baechle <> wrote:
> Kconfig will pick the default machine which is an IP22 for allyesconfig
> and allmodconfig.  The makefile will then pick the right flags for the
> compiler based on machine, processor and endian selection.  so it'll
> happily build a big endian kernel with a little endian compiler.  All
> that's really different between those compilers are the defaults.  Building
> more different defconfigs is a better investments of CPU cycles.
> An issue with very large functionss for which I've posted a patch earlier
> today used to break makeallconfig / makeallmodconfig on MIPS.  I'll sort
> those out but right now I just don't have the CPU cycles to regularly
> build such monster kernel configs.
> A suggested set of kernel defconfigs to test:
> bigsur_defconfig
> cavium-octeon_defconfig
> ip22_defconfig
> ip27_defconfig
> ip32_defconfig
> malta_defconfig
> allmodconfig
> These cover a huge variety of features, UP, SMP & weirdo SMP, flatmem & NUMA,
> 32-bit, 64-bit, little and big endian.

OK, I will adjust the MIPS builds tomorrow.  Thanks for the suggestions.
Just be clear, I only need to build with one compiler (presumably what
gcc/binutils produces when I ask for a "mips" toolchain) and can drop the
other ("mipsel"), correct?

Stephen Rothwell          

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