linux-kernel - Re: [PATCH] MIPS: Loongson64: Drop 32-bit support for Loongson 2E/2F devices

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Message-ID: <20180102133944.GO5027@jhogan-linux.mipstec.com>
Date:   Tue, 2 Jan 2018 13:39:45 +0000
From:   James Hogan <james.hogan@...s.com>
To:     Jiaxun Yang <jiaxun.yang@...goat.com>
CC:     Ralf Baechle <ralf@...ux-mips.org>,
        Huacai CHen <chenhc@...ote.com>, <linux-mips@...ux-mips.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] MIPS: Loongson64: Drop 32-bit support for Loongson 2E/2F
 devices

On Tue, Jan 02, 2018 at 09:29:46PM +0800, Jiaxun Yang wrote:
> On 2018-01-02 Tue 08:48 +0000，James Hogan Wrote：
> > On Tue, Dec 26, 2017 at 12:21:38PM +0800, Jiaxun Yang wrote:
> > > Make loongson64 a pure 64-bit mach.
> > 
> > Please expand to provide some rationale behind the change. Was 32-bit
> > support broken at runtime, or broken at build time, or are we simply
> > no
> 
> The 32-bit support was broken at runtime, it doesn't boot anymore,
> witch is hard to debug because even early printk isn't working, also
> there are some build warnings. Some newer bootloader may not support
> 32-bit ELF. So we decide to drop 32-bit support.

Okay, please put that in the commit message so that somebody digging
through the history later (perhaps summarising what is new in the next
release) can understand the *why* as well as the what.

Cheers
James

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