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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,T_DKIMWL_WL_HIGH autolearn=unavailable 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 EBB7FC28CC6 for ; Mon, 3 Jun 2019 15:24:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BC50B27214 for ; Mon, 3 Jun 2019 15:24:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559575472; bh=a3ZkqBR9ntiyTwcVktdqZT3z2YhgAzl95hFO2PmfLyY=; h=Date:From:To:cc:Subject:In-Reply-To:References:List-ID:From; b=m5oCCtCr2PGFk73enjwdbFGkskXCVgZVOsIskB3RFAIFIpLhbISERB/0U4Rx/PAku SzdHKxA0Ymofypabc/HqQgq2ruPPydukvbb+g1TOxy85fZBqng1fcrpimy9EbgAQ85 eMBF+qwoZ4LB99vV7MS8g09tKRSt2Qf87OlqZVlI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727572AbfFCPYc (ORCPT ); Mon, 3 Jun 2019 11:24:32 -0400 Received: from mail.kernel.org ([198.145.29.99]:38970 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726806AbfFCPYb (ORCPT ); Mon, 3 Jun 2019 11:24:31 -0400 Received: from pobox.suse.cz (prg-ext-pat.suse.com [213.151.95.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4F31827212; Mon, 3 Jun 2019 15:24:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559575470; bh=a3ZkqBR9ntiyTwcVktdqZT3z2YhgAzl95hFO2PmfLyY=; h=Date:From:To:cc:Subject:In-Reply-To:References:From; b=2uk8OK+RF7L77lIHwLQ/aOEgO0LH1vB3pqhLZz7u4gmHVKjpluOchGU2crqeR/Ci2 rO1hbIP2NusUfgTXGU1QM0UhGJEtf/Kz42/qpzJ4ofnbGmTN96UPT8+gKQHpeU7T0Q /UwkAVzaR7i2Z5MY3hz6kfH2nVUlkKg9j3QwIeaU= Date: Mon, 3 Jun 2019 17:24:26 +0200 (CEST) From: Jiri Kosina To: Sean Christopherson cc: Andy Lutomirski , Andy Lutomirski , "Rafael J. Wysocki" , Josh Poimboeuf , "Rafael J. Wysocki" , Thomas Gleixner , the arch/x86 maintainers , Pavel Machek , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Peter Zijlstra , Linux PM , Linux Kernel Mailing List Subject: Re: [PATCH v4] x86/power: Fix 'nosmt' vs. hibernation triple fault during resume In-Reply-To: <20190603142330.GA13384@linux.intel.com> Message-ID: References: <20190531051456.fzkvn62qlkf6wqra@treble> <5564116.e9OFvgDRbB@kreacher> <98E57C7E-24E2-4EB8-A14E-FCA80316F812@amacapital.net> <20190603142330.GA13384@linux.intel.com> User-Agent: Alpine 2.21 (LSU 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 3 Jun 2019, Sean Christopherson wrote: > For P6 and later, i.e. all modern CPUs, Intel processors go straight to > halted state and don't fetch/decode the HLT instruction. That'd be a rather relieving fact actually. Do you happen to know if this is stated in some Intel documentation and we've just overlooked it, or whether it's rather an information that's being carried over from generation to generation by whispering through grapevine? Thanks, -- Jiri Kosina SUSE Labs