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=-5.9 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,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 8C675C47080 for ; Tue, 1 Jun 2021 22:49:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 764C1613AD for ; Tue, 1 Jun 2021 22:49:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235096AbhFAWvV (ORCPT ); Tue, 1 Jun 2021 18:51:21 -0400 Received: from mga01.intel.com ([192.55.52.88]:6579 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234766AbhFAWvU (ORCPT ); Tue, 1 Jun 2021 18:51:20 -0400 IronPort-SDR: SLmoiT+tkzCEo3i39l8onyHkyUYsqqzptOmPrpr506z0ZKLLri3FfB7pTNTWrVLSKF+LY2NgDd Q9OIpJdfFiow== X-IronPort-AV: E=McAfee;i="6200,9189,10002"; a="224938895" X-IronPort-AV: E=Sophos;i="5.83,241,1616482800"; d="scan'208";a="224938895" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Jun 2021 15:49:38 -0700 IronPort-SDR: xaKiwBq64AhFAALOwOrE+uVnU8Ol3XG+BDdLfVUdB6LtDUWaiFnwrpK3oiMHwhgb+LH/X+B3xR 9PIM9FMi6ubw== X-IronPort-AV: E=Sophos;i="5.83,241,1616482800"; d="scan'208";a="474416967" Received: from cble-mobl.amr.corp.intel.com (HELO [10.209.7.186]) ([10.209.7.186]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Jun 2021 15:49:36 -0700 Subject: Re: [PATCH 4/5] x86/pkeys: replace PKRU modification infrastructure To: Dave Kleikamp , Babu Moger , Dave Hansen , linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, luto@kernel.org, shuah@kernel.org, linuxram@us.ibm.com, bauerman@linux.ibm.com, bigeasy@linutronix.de References: <20210527235109.B2A9F45F@viggo.jf.intel.com> <20210527235118.88C9831B@viggo.jf.intel.com> <0f98bc0a-3ee4-3fe9-f7c6-9c2b873bec38@amd.com> <5617bb6d-2202-53f4-8b4d-7b3e72ca0158@oracle.com> From: Dave Hansen Autocrypt: addr=dave.hansen@intel.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <5617bb6d-2202-53f4-8b4d-7b3e72ca0158@oracle.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 6/1/21 3:43 PM, Dave Kleikamp wrote: > On 6/1/21 4:54 PM, Babu Moger wrote: >> Hi Dave, >> Thanks for the patches and trying to address the issues. >> >> I know these patches are in early stages and there is still a discussion >> on different ways to address these issues. But I wanted to give a try >> anyway. >> >> Tried to boot the system with these patches. But system did not come up >> after this patch(#4). System fails very early in the boot process. So, I >> could'nt collect much logs. It failed both on AMD and Intel machines. >> I will try to collect more logs. >> Thanks >> Babu > > Same here. Hitting this line in arch/x86/include/asm/fpu/xstate.h > >         BUG_ON(!(xstate->header.xcomp_bv & BIT_ULL(xfeature_nr))); > > [    0.384929] kernel BUG at arch/x86/include/asm/fpu/xstate.h:177! Thanks for the report. I am, indeed, reworking this code a bit. I'll pay close attention if this code remains in some form.