From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Wed, 04 Aug 2010 10:09:22 +0200 (CEST) Received: from gateway09.websitewelcome.com ([69.93.243.4]:39451 "HELO gateway09.websitewelcome.com" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with SMTP id S1492887Ab0HDIJR (ORCPT ); Wed, 4 Aug 2010 10:09:17 +0200 Received: (qmail 16589 invoked from network); 4 Aug 2010 08:17:25 -0000 Received: from gator750.hostgator.com (174.132.194.2) by gateway09.websitewelcome.com with SMTP; 4 Aug 2010 08:17:25 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=paralogos.com; h=Received:Message-ID:Date:From:User-Agent:MIME-Version:To:CC:Subject:References:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=C0iklcMrKFFQnDLzIkSVf8c1xyL63Gk62KhDUGRNEFhvr18bemBb8EHWyHd5pCu3qBrSTKquj/Orikc1ciJHU3ZNxNX2b4FWSj+RUj8UDnzIHOgiszIqCfopAzTggisg; Received: from c-98-207-157-135.hsd1.ca.comcast.net ([98.207.157.135]:1576 helo=[127.0.0.1]) by gator750.hostgator.com with esmtpa (Exim 4.69) (envelope-from ) id 1OgZ2A-00067a-Oi; Wed, 04 Aug 2010 03:09:07 -0500 Message-ID: <4C592027.8010902@paralogos.com> Date: Wed, 04 Aug 2010 01:09:11 -0700 From: "Kevin D. Kissell" User-Agent: Thunderbird 2.0.0.24 (Windows/20100228) MIME-Version: 1.0 To: Deng-Cheng Zhu CC: linux-mips@linux-mips.org Subject: Re: [Q] enabling FPU for vpe1 References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator750.hostgator.com X-AntiAbuse: Original Domain - linux-mips.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - paralogos.com Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 27563 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: kevink@paralogos.com Precedence: bulk X-list: linux-mips Check the MIPS MT spec. If I recall correctly, it's possible to enable access to the FPU by either VPE by setting the right bits while the processor is in the MT configuration mode. Deng-Cheng Zhu wrote: > Hi, > > > I'm working on a 34Kf CPU. I understand that only one TC can use the > FPU at any given time. > > My question is: If a TC is attached to the 2nd VPE (i.e. VPE1), can I > enable FPU for it? > > I experimented on this, but failed to do it. Am I missing something? > > > Thanks > > Deng-Cheng > >