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Re: [PATCH 2/8] um: Do not use SUBARCH

To: Richard Weinberger <>
Subject: Re: [PATCH 2/8] um: Do not use SUBARCH
From: Ramkumar Ramachandra <>
Date: Thu, 26 Sep 2013 16:23:29 +0530
Cc:, Michal Marek <>,,,, Jeff Dike <>, Guan Xuetao <>, Thomas Gleixner <>, Ingo Molnar <>, "H. Peter Anvin" <>,,, LKML <>,,,,
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Richard Weinberger wrote:
> So, what exactly is broken in upstream?
> make defconfig works as it always did.

Auto-detection of SUBARCH, which can be done with a simple call to
uname -m (the 90% case). The second patch I submitted prevented
spawning xterms unnecessarily, which we discussed was a good move.

> make defconfig ARCH=um SUBARCH=x86 (or SUBARCH=i386) will create a defconfig 
> for 32bit.
> make defconfig ARCH=um SUBARCH=x86_64 one for 64bit.

Yes, that's how I prepared the patch in the first place.

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