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Date:   Wed, 25 Mar 2020 02:36:57 +0000 (GMT)
From:   "Maciej W. Rozycki" <macro@linux-mips.org>
To:     Christoph Hellwig <hch@lst.de>
cc:     Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
        Fredrik Noring <noring@nocrew.org>, linux-mips@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/6] MIPS: remove cpu_has_64bit_gp_regs and
 cpu_has_64bit_addresses
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On Tue, 24 Mar 2020, Christoph Hellwig wrote:

> Both macros are always identical to CONFIG_64BIT.

 I think this abstraction makes sense, especially if we want to support 
64-bit CPUs that only support 32-bit segments, i.e. MIPS architecture 
processors whose CP0.Config.AT=1, or legacy MIPS processors that had a 
similar limitation, such as the R5900 currently under review.

  Maciej