From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Mon, 05 Oct 2015 11:24:45 +0200 (CEST) Received: from localhost.localdomain ([127.0.0.1]:39554 "EHLO linux-mips.org" rhost-flags-OK-OK-OK-FAIL) by eddie.linux-mips.org with ESMTP id S27009322AbbJEJYnMGNhs (ORCPT ); Mon, 5 Oct 2015 11:24:43 +0200 Received: from scotty.linux-mips.net (localhost.localdomain [127.0.0.1]) by scotty.linux-mips.net (8.15.2/8.14.8) with ESMTP id t959OfNV001538; Mon, 5 Oct 2015 11:24:41 +0200 Received: (from ralf@localhost) by scotty.linux-mips.net (8.15.2/8.15.2/Submit) id t959Ofnm001537; Mon, 5 Oct 2015 11:24:41 +0200 Date: Mon, 5 Oct 2015 11:24:41 +0200 From: Ralf Baechle To: Ben Hutchings Cc: linux-mips@linux-mips.org, "Maciej W. Rozycki" Subject: Re: [PATCH] MIPS: BPF: Disable JIT on R3000 (MIPS-I) Message-ID: <20151005092440.GA1389@linux-mips.org> References: <1441481368.15927.0.camel@decadent.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1441481368.15927.0.camel@decadent.org.uk> User-Agent: Mutt/1.5.23 (2014-03-12) 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: 49422 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: ralf@linux-mips.org Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips On Sat, Sep 05, 2015 at 08:29:28PM +0100, Ben Hutchings wrote: > The JIT does not include the load delay slots required by MIPS-I > processors. See 0c5d187828588dd1b36cb93b4481a8db467ef3e8 (MIPS: BPF: Fix load delay slots.) for a proper fix. I'm wondering, how did you find this issue, are you scanning the code for broken instruction sequences? Ralf