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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 94220C54FCB for ; Wed, 22 Apr 2020 16:35:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 662C02082E for ; Wed, 22 Apr 2020 16:35:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lca.pw header.i=@lca.pw header.b="JbAJCGJM" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726948AbgDVQfM (ORCPT ); Wed, 22 Apr 2020 12:35:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37102 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725808AbgDVQfM (ORCPT ); Wed, 22 Apr 2020 12:35:12 -0400 Received: from mail-qk1-x736.google.com (mail-qk1-x736.google.com [IPv6:2607:f8b0:4864:20::736]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C30C0C03C1A9 for ; Wed, 22 Apr 2020 09:35:11 -0700 (PDT) Received: by mail-qk1-x736.google.com with SMTP id m67so2987787qke.12 for ; Wed, 22 Apr 2020 09:35:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lca.pw; s=google; h=content-transfer-encoding:from:mime-version:subject:date:message-id :references:cc:in-reply-to:to; bh=DqTx+R+JV6vymEcgZ+pw6C27qjNlWqJpkbsx1i9Y7eY=; b=JbAJCGJMhGu88bPCsY7coswwKtqVoO+QQiV1fZdl6ErPz9dHJqZeWPGnzxvQ1zeL7F 5gGlSkjuYxwAkgjXDV4/IyjCXZ2l7CtolGQ/DLGxATIg02NiWkQVGPzt7Mgpo7O+sE1f 5/U8xisyFAzBGOrm79KMQY4mmTDzeR+ZJZeSgZf7OfdU6jnWXirXdglQuC6Qjxm8L2wb 5ewxwmddE7Dzh3e92I6qvePV9MQ2OpAwIyJI5kd93dL15L8gryo0QhxdO6h0P/cFV3Mv wFJVS8Yk51coyJoGrINcIM1kpGxPvbhTzEJRr2I/5VaixcLArGBh+tDIiu6wzPpn6Gj8 cn8w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:content-transfer-encoding:from:mime-version :subject:date:message-id:references:cc:in-reply-to:to; bh=DqTx+R+JV6vymEcgZ+pw6C27qjNlWqJpkbsx1i9Y7eY=; b=jGP5D5vMS7Skck3NGqPgOaLrpQax4d5yBZEGYw053ygJ6sher3uDrZzmOFFh5GaTkt RfyyulmVNbHCKLlI/NAiDvrWFCL+pjWI42QbkQErO06pwvrncXxeV6JJTw569z+GYi6i XvKyiNFWfCDt3vE+osvFWFLk/uKMuOrBcq3SYpd9Cr7fPLbcidwT4d6NpUrmpmWcfsGr a9GnQg97hFClUkzcP/j4eRl3ZTmU7yhkz4qauxA4VVFYt09w/+lVB8r/iqXNlxxmdQm9 c63EcS4HLIiJp3Skh+9TWFARaZRk+Qrvg1gAs984LXwoSpP4RPJM2vZkKwz/8usamB+O s4QQ== X-Gm-Message-State: AGi0PubnF+dGP14j0ce6pYyx4VfLofPimhJ0+hVpYqjkB08C3IEo+WuM K2UkzMPOj4JJnf6LCivLaOrPSw== X-Google-Smtp-Source: APiQypKZehf5rRPMT55k+qjxOkJxOGmhAhEj6nXZhHKApHPnIxrSlYi+tmd2g2gTnL7FsTdjkBhtqQ== X-Received: by 2002:a37:a090:: with SMTP id j138mr28112903qke.168.1587573310995; Wed, 22 Apr 2020 09:35:10 -0700 (PDT) Received: from [192.168.1.183] (pool-71-184-117-43.bstnma.fios.verizon.net. [71.184.117.43]) by smtp.gmail.com with ESMTPSA id d17sm4408130qtb.74.2020.04.22.09.35.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 22 Apr 2020 09:35:10 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable From: Qian Cai Mime-Version: 1.0 (1.0) Subject: Re: AMD boot woe due to "x86/mm: Cleanup pgprot_4k_2_large() and pgprot_large_2_4k()" Date: Wed, 22 Apr 2020 12:35:08 -0400 Message-Id: <59604C7F-696A-45A3-BF4F-C8913E09DD4C@lca.pw> References: <20200422161757.GC26846@zn.tnic> Cc: Christoph Hellwig , "Peter Zijlstra (Intel)" , x86 , LKML , kasan-dev In-Reply-To: <20200422161757.GC26846@zn.tnic> To: Borislav Petkov X-Mailer: iPhone Mail (17D50) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > On Apr 22, 2020, at 12:18 PM, Borislav Petkov wrote: >=20 > What is the special thing about this config? You have KASAN enabled and? > Anything else? >=20 > I need to know what are the relevant switches you've enabled so that I > can enable them on my box too and try to reproduce. The config has a few extra memory debugging options enabled like KASAN, debu= g_pagealloc, debug_vm etc. The affected machines are NUMA AMD servers.=