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 B9E1DC433F5 for ; Thu, 6 Jan 2022 15:56:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240826AbiAFP4k (ORCPT ); Thu, 6 Jan 2022 10:56:40 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48336 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240720AbiAFP4i (ORCPT ); Thu, 6 Jan 2022 10:56:38 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 75FECC061245 for ; Thu, 6 Jan 2022 07:56:38 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 3E797B82250 for ; Thu, 6 Jan 2022 15:56:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BEFD8C36AE0; Thu, 6 Jan 2022 15:56:33 +0000 (UTC) Date: Thu, 6 Jan 2022 15:56:30 +0000 From: Catalin Marinas To: Jianyong Wu Cc: "will@kernel.org" , Anshuman Khandual , "akpm@linux-foundation.org" , "david@redhat.com" , "quic_qiancai@quicinc.com" , "ardb@kernel.org" , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "gshan@redhat.com" , Justin He , nd Subject: Re: [PATCH v3] arm64/mm: avoid fixmap race condition when create pud mapping Message-ID: References: <20211216082812.165387-1-jianyong.wu@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jan 06, 2022 at 10:13:06AM +0000, Jianyong Wu wrote: > I test this patch in your way using both EDK2 V2.6 and EDK2 v2.7. it's > peculiar that this issue shows up on v2.6 but not on v2.7. > For now, I only find that if "CONFIG_DEBUG_LOCK_ALLOC" is enabled, the > kernel boot will hang. However, I can't debug it by printk as this > issue happens before pl11 is ready. I tried earlycon but that doesn't help either. > I will go on debugging, but very appreciated if someone can give some > hints on it. FWIW, passing "nokaslr" on the kernel command line makes it boot (and this makes debugging harder). That's as far as I've gone. -- Catalin