From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BBCCEC433E6 for ; Mon, 28 Dec 2020 10:52:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 82CC5229C4 for ; Mon, 28 Dec 2020 10:52:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727085AbgL1Kwy (ORCPT ); Mon, 28 Dec 2020 05:52:54 -0500 Received: from elvis.franken.de ([193.175.24.41]:43075 "EHLO elvis.franken.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727019AbgL1Kwy (ORCPT ); Mon, 28 Dec 2020 05:52:54 -0500 Received: from uucp (helo=alpha) by elvis.franken.de with local-bsmtp (Exim 3.36 #1) id 1ktq8K-00054l-00; Mon, 28 Dec 2020 11:52:12 +0100 Received: by alpha.franken.de (Postfix, from userid 1000) id C06D5C0524; Mon, 28 Dec 2020 11:47:45 +0100 (CET) Date: Mon, 28 Dec 2020 11:47:45 +0100 From: Thomas Bogendoerfer To: Jiaxun Yang Cc: "linux-mips@vger.kernel.org" Subject: Re: CPUs with EVA support Message-ID: <20201228104745.GA3606@alpha.franken.de> References: <20201220193201.GA3184@alpha.franken.de> <20201227222643.GA5249@alpha.franken.de> <0c24ee90-1872-492d-9bfe-4744aaa87615@www.fastmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0c24ee90-1872-492d-9bfe-4744aaa87615@www.fastmail.com> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org On Mon, Dec 28, 2020 at 09:28:53AM +0800, Jiaxun Yang wrote: > > > On Mon, Dec 28, 2020, at 6:26 AM, Thomas Bogendoerfer wrote: > > On Mon, Dec 21, 2020 at 08:38:00AM +0800, Jiaxun Yang wrote: > > > > How good is EVA support in qemu ? > > > > > > EVA is functional in QEMU. > > > I had tested it with P5600 malta system. > > > > and it's working for you ? I've setup a qemu malta system running > > debian buster. It boots fine when CPU is != P5600, but as soon as > > I enable -cpu P5600 it stops booting: > > > > Run /bin/bash as init process > > request_module: kmod_concurrent_max (0) close to 0 (max_modprobes: 50), > > for module binfmt-464c, throttling... > > request_module: modprobe binfmt-464c cannot be processed, kmod busy > > with 50 threads for more than 5 seconds now > > Kernel panic - not syncing: Requested init /bin/bash failed (error -8). > > Well you need add "ieee754=relaxed" to cmdline > to workaround this. > > It's due to NAN2008 mismatch. excellent, now it boots. I had to specify "coherentio" as kernel parameter to avoid a pcnet32 driver crash the kernel. Looks like creating uncached pointers is borken in EVA kernels, is this a known issue ? Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]