From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 4CC7DB7BC5 for ; Tue, 6 Oct 2009 08:31:51 +1100 (EST) Subject: Re: [PATCH 0/6] PowerPc 8xx TLB/MMU fixes From: Benjamin Herrenschmidt To: Joakim Tjernlund In-Reply-To: References: <1254744999-3158-1-git-send-email-Joakim.Tjernlund@transmode.se> <20091005181233.GA3576@loki.buserror.net> <20091005200941.GD3576@loki.buserror.net> Content-Type: text/plain; charset="UTF-8" Date: Tue, 06 Oct 2009 08:31:39 +1100 Message-Id: <1254778299.7122.39.camel@pasglop> Mime-Version: 1.0 Cc: Scott Wood , "linuxppc-dev@ozlabs.org" , Rex Feany List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Mon, 2009-10-05 at 23:04 +0200, Joakim Tjernlund wrote: > > Yes, every ld.so uses dcbX and icbi insn when relocatin code. Even with -msecure-plt ? > Maybe you see some version of the dcbX bug, but my fault.c should > fix them up. My bet would be the 32 byte cache line, it will miss > out every second line and so the results are unreliable. Cheers, Ben.