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=-10.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham 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 6B37BC4320A for ; Sat, 7 Aug 2021 19:33:04 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id E38FB61004 for ; Sat, 7 Aug 2021 19:33:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org E38FB61004 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 3ACDB8D0001; Sat, 7 Aug 2021 15:33:03 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 35BB36B0071; Sat, 7 Aug 2021 15:33:03 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 271218D0001; Sat, 7 Aug 2021 15:33:03 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0233.hostedemail.com [216.40.44.233]) by kanga.kvack.org (Postfix) with ESMTP id 102D06B006C for ; Sat, 7 Aug 2021 15:33:03 -0400 (EDT) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 98CF42031F for ; Sat, 7 Aug 2021 19:33:02 +0000 (UTC) X-FDA: 78449282604.11.4E2C99C Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by imf17.hostedemail.com (Postfix) with ESMTP id 628C5F003235 for ; Sat, 7 Aug 2021 19:33:01 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10069"; a="236510420" X-IronPort-AV: E=Sophos;i="5.84,303,1620716400"; d="scan'208";a="236510420" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Aug 2021 12:32:59 -0700 X-IronPort-AV: E=Sophos;i="5.84,303,1620716400"; d="scan'208";a="524453650" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Aug 2021 12:32:59 -0700 Date: Sat, 7 Aug 2021 12:32:59 -0700 From: Ira Weiny To: Randy Dunlap Cc: Dave Hansen , Dan Williams , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Peter Zijlstra , Andy Lutomirski , "H. Peter Anvin" , Fenghua Yu , Rick Edgecombe , x86@kernel.org, linux-kernel@vger.kernel.org, nvdimm@lists.linux.dev, linux-mm@kvack.org Subject: Re: [PATCH V7 14/18] memremap_pages: Add memremap.pks_fault_mode Message-ID: <20210807193259.GD3169279@iweiny-DESK2.sc.intel.com> References: <20210804043231.2655537-1-ira.weiny@intel.com> <20210804043231.2655537-15-ira.weiny@intel.com> <2bbd7ce2-8d16-8724-5505-96a4731c3c45@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2bbd7ce2-8d16-8724-5505-96a4731c3c45@infradead.org> User-Agent: Mutt/1.11.1 (2018-12-01) X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 628C5F003235 Authentication-Results: imf17.hostedemail.com; dkim=none; dmarc=fail reason="No valid SPF, No valid DKIM" header.from=intel.com (policy=none); spf=none (imf17.hostedemail.com: domain of ira.weiny@intel.com has no SPF policy when checking 192.55.52.88) smtp.mailfrom=ira.weiny@intel.com X-Stat-Signature: twh49qfekcomo7qgr8fdqhxg5u8yfqud X-HE-Tag: 1628364781-282114 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Aug 03, 2021 at 09:57:31PM -0700, Randy Dunlap wrote: > On 8/3/21 9:32 PM, ira.weiny@intel.com wrote: > > diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt > > index bdb22006f713..7902fce7f1da 100644 > > --- a/Documentation/admin-guide/kernel-parameters.txt > > +++ b/Documentation/admin-guide/kernel-parameters.txt > > @@ -4081,6 +4081,20 @@ > > pirq= [SMP,APIC] Manual mp-table setup > > See Documentation/x86/i386/IO-APIC.rst. > > + memremap.pks_fault_mode= [X86] Control the behavior of page map > > + protection violations. Violations may not be an actual > > + use of the memory but simply an attempt to map it in an > > + incompatible way. > > + (depends on CONFIG_DEVMAP_ACCESS_PROTECTION > > Missing closing ')' above. Fixed. Thank you! Ira > > > + > > + Format: { relaxed | strict } > > + > > + relaxed - Print a warning, disable the protection and > > + continue execution. > > + strict - Stop kernel execution via BUG_ON or fault > > + > > + default: relaxed > > + > > > -- > ~Randy > >