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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 48810C433EF for ; Wed, 8 Dec 2021 13:05:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233997AbhLHNIz (ORCPT ); Wed, 8 Dec 2021 08:08:55 -0500 Received: from elvis.franken.de ([193.175.24.41]:36512 "EHLO elvis.franken.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229636AbhLHNIz (ORCPT ); Wed, 8 Dec 2021 08:08:55 -0500 Received: from uucp (helo=alpha) by elvis.franken.de with local-bsmtp (Exim 3.36 #1) id 1muwdN-0002vv-00; Wed, 08 Dec 2021 14:05:21 +0100 Received: by alpha.franken.de (Postfix, from userid 1000) id 78AACC4E02; Wed, 8 Dec 2021 12:50:30 +0100 (CET) Date: Wed, 8 Dec 2021 12:50:30 +0100 From: Thomas Bogendoerfer To: Huacai Chen Cc: "open list:MIPS" Subject: Re: Loongson64 and huge pages Message-ID: <20211208115030.GA9868@alpha.franken.de> References: <20211207162618.GA19327@alpha.franken.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org On Wed, Dec 08, 2021 at 09:56:50AM +0800, Huacai Chen wrote: > Hi, Thomas, > > On Wed, Dec 8, 2021 at 8:59 AM Thomas Bogendoerfer > wrote: > > > > Hi, > > > > [ 11.647401] CPU 3 Unable to handle kernel paging request at virtual address 0000000558005801, epc == ffffffff80232838, ra == ffffffff802327ac > > [ 11.660049] Oops[#1]: > > [ 11.662303] CPU: 3 PID: 348 Comm: libvirtd Not tainted 5.16.0-rc3+ #140 > > [ 11.668877] Hardware name: Lemote LEMOTE-LS3A4000-7A1000-1w-V0.1-pc/LEMOTE-LS3A4000-7A1000-1w-V01-pc, BIOS Kunlun-A1901-V4.1.4 04/20/2020 > > [ 11.929428] note: libvirtd[348] exited with preempt_count 1 > [..] > > > > is this a known issue ? If I disabled TRANSPARENT_HUGE_PAGE system > > works. > Have you tried some older kernels, such as 5.10/5.15? I have seen that > some MM-related patches be merged in MIPS tree in recent releases, and > maybe this bug is caused by them. not yet, as it has worked, I'm going to bisect it. Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]