linux-kernel - Re: [PATCH 2/3] MIPS: Allow UserLocal on MIPS

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Date:	Thu, 9 Sep 2010 11:53:59 +0200
From:	Ralf Baechle <ralf@...ux-mips.org>
To:	Kevin Cernekee <cernekee@...il.com>
Cc:	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] MIPS: Allow UserLocal on MIPS_R1 processors

On Wed, Sep 08, 2010 at 04:02:14PM -0700, Kevin Cernekee wrote:

> Some MIPS32R1 processors implement UserLocal (RDHWR $29) to accelerate
> programs that make extensive use of thread-local storage.  Therefore,
> setting up the HWRENA register should not depend on cpu_has_mips_r2.

Interesting - which R1 processor has RDHWR?  When UserLocal was conceived
R2 was already long released.

  Ralf
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