From: Ingo Oeser <ioe-lkml@axxeo.de>
To: David Gibson <david@gibson.dropbear.id.au>
Subject: Re: [PPC64] Allow emulation of mfpvr on ppc64 kernel
Date: Thu, 10 Mar 2005 23:17:03 +0100
User-Agent: KMail/1.7.1
References: <20050310021848.GD30435@localhost.localdomain>
In-Reply-To: <20050310021848.GD30435@localhost.localdomain>
Cc: Andrew Morton <akpm@osdl.org>, Anton Blanchard <anton@samba.org>,
       Paul Mackerras <paulus@samba.org>, linuxppc64-dev@lists.linuxppc.org,
       linux-kernel@vger.kernel.org
MIME-Version: 1.0
Content-Type: text/plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Message-Id: <200503102317.04027.ioe-lkml@axxeo.de>
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 754
Lines: 23

David Gibson wrote:
> Andrew, please apply.
>
> Allow userspace programs on ppc64 to use the (privileged) mfpvr
> instruction to determine the processor type.  At the moment it
> emulates the instruction to provide the real PVR value, though it
> could be made to lie in future if for some reason we wish to restrict
> what CPU features userspace uses.

Why not putting the required information into the AUX table
when executing your ELF programs? I loved this feature in the
ix86 arch.


Regards

Ingo Oeser

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/