[Top] [All Lists]

Re: [PATCH 1/4] MIPS: Add base architecture support for RI and XI.

To: David Daney <>
Subject: Re: [PATCH 1/4] MIPS: Add base architecture support for RI and XI.
From: Kevin Cernekee <>
Date: Wed, 5 Sep 2012 16:30:24 -0700
Cc: "Steven J. Hill" <>,,
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed;; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=WzschZMRJzE+KaP51EZSOHk6yptNVSVM/LYEEmupikc=; b=qkQwFxdvGuE3nDpY1QjRa0K0yYIQwG1jj3WvmiGlTi2xNkUoxOgSd+pIJojT1DwoxI m4W/87R50sFjZfY9RiBdRmTbYlxZa/1Uu2urxJCmhA1LGoixUS4fXC/TfGFsKpDBdKX5 3qULmYxmFz//Tdztr9KQefepITuYfNwFHYfst0Vtx53DKdINr0jrCPHh4xyf2FX0oRhG UedrBlrBa4D9Z8lrCrnVrP/MCds3Snjty2jRXA0RRjX9RNWcvf/eQo2kOeNnjgROuJyF B7dRhZBJoimaPpuCuv6zdnLD3dWIF5c3R8sHTF1FKP2Vxj0hS//x/o9gJV0wF2HFurNJ mKiQ==
In-reply-to: <>
List-archive: <>
List-help: <>
List-id: linux-mips <>
List-owner: <>
List-post: <>
List-software: Ecartis version 1.0.0
List-subscribe: <>
List-unsubscribe: <>
References: <> <> <> <>
On Wed, Sep 5, 2012 at 2:51 PM, David Daney <> wrote:
> Nobody in their right mind would implement only one of RI or XI.  So
> splitting this feature into two parts just adds complication with no
> benefit.  Unless you have evidence that there is actual silicon that only
> implements one of the two, there is no reason to split this, and to way to
> test it.
> You can just keep kernel_uses_smartmips_rixi, and the rest of the patch set
> is mostly unneeded.

Recent BMIPS4380/BMIPS5000 cores support the XI bit, and ignore the RI bit.

AFAICT it is safe to just use kernel_uses_smartmips_rixi=1 on these processors.

<Prev in Thread] Current Thread [Next in Thread>