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=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS 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 B1C9FC46475 for ; Sat, 27 Oct 2018 14:42:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 45EEC20828 for ; Sat, 27 Oct 2018 14:42:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 45EEC20828 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728730AbeJ0XXX (ORCPT ); Sat, 27 Oct 2018 19:23:23 -0400 Received: from mx1.redhat.com ([209.132.183.28]:57298 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728616AbeJ0XXX (ORCPT ); Sat, 27 Oct 2018 19:23:23 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5C12A806B4; Sat, 27 Oct 2018 14:42:11 +0000 (UTC) Received: from localhost.localdomain (ovpn-12-142.pek2.redhat.com [10.72.12.142]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 5328A5C1A1; Sat, 27 Oct 2018 14:42:02 +0000 (UTC) Subject: Re: [PATCH] kdump, vmcoreinfo: Export sme_me_mask value to vmcoreinfo To: Boris Petkov , Baoquan He Cc: Petr Tesarik , linux-kernel@vger.kernel.org, x86@kernel.org, kexec@lists.infradead.org, mingo@redhat.com, tglx@linutronix.de, dyoung@redhat.com References: <20181026093630.8520-1-lijiang@redhat.com> <053CC83A-9A95-4C12-9627-AABD1427DA9C@alien8.de> <1263471c-a27d-a698-15f0-b5947f13ea93@redhat.com> <20181026182440.20a4b107@ezekiel.suse.cz> <20181026222517.GB26927@nazgul.tnic> <20181027081343.GA1884@MiWiFi-R3L-srv> <20181027091007.GB1046@nazgul.tnic> <20181027093917.GA14493@MiWiFi-R3L-srv> <20181027101221.GC1046@nazgul.tnic> <20181027110858.GB14493@MiWiFi-R3L-srv> From: lijiang Message-ID: Date: Sat, 27 Oct 2018 22:41:56 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Sat, 27 Oct 2018 14:42:11 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 在 2018年10月27日 21:17, Boris Petkov 写道: > On October 27, 2018 12:08:58 PM GMT+01:00, Baoquan He wrote: >> OK, then it's fine to get the bit number, e.g calling >> find_first_bit(sme_me_mask, BITS_PER_LONG), and export it to >> vmcoreinfo. Thanks. > > You can simply assign sme_me_mask for now... > Thank you, Boris and Baoquan. Actually, the value of 'sme_me_mask' is 0x800000000000 when SME is enabled, otherwise it is 0. That is to say, if the bit 47 is set, the bit number is also 0x800000000000 (1 << 47UL); At present, they are both the same value. Regards, Lianbo