Received: by 2002:a25:ab43:0:0:0:0:0 with SMTP id u61csp4286562ybi; Mon, 3 Jun 2019 08:27:45 -0700 (PDT) X-Google-Smtp-Source: APXvYqxCixYmMW1a0RjdWDU9Ms4RtXJtETpRtyiFcXypSRM+zl5k1tp0WPceNJKJJWTYAMWyXn1p X-Received: by 2002:a63:1657:: with SMTP id 23mr27473746pgw.98.1559575664952; Mon, 03 Jun 2019 08:27:44 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1559575664; cv=none; d=google.com; s=arc-20160816; b=DdhWNo8YnHrWBTGnBv1qdU4xyT+nF9coZsB/82tGlEc9PXiuesvZUQWafjbRoxauuL hQ3liu6Q0q+rTQvURdW3WmGEj4VjWF/6i8C1rQ/cswFJqk6NaHjLZg/yhYQAdbYn0/0X TV5cQWLPPJ45EobMiHWfcpTVc+UF+oV/qlSr2K9LU35l39bPaXyR5mdzyZz0HsMQ9bCw 8Fjhx14RkXFH9YQsgHJJioYXxDfCanyNdazIhfFlZwS5PBfmyEojalkBDSS2GrNO7P3O ibIQbj80HJWTvlltyg8B36PfR58dCEJQB9mLM/tzQycfazI1xQ0iB8KrkJEXJQdNI2fX FE1A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:user-agent:references :message-id:in-reply-to:subject:cc:to:from:date:dkim-signature; bh=atkoseOYPATfK/PPrmcZNxDHQ14IxC/Csh8ntVlCxN4=; b=DUn771wParph8Nn1j6w59k2xZEuth0c9bRj8jmGhTFsg/6joxjMlT/ezsseUL0W3M7 uEoZdQ7ZjtT25CjJEBYz5vJVQhwEEhYipfKSUyla+aF+u7O+Wb7vp/Ix2nkUDBYazGkI qkmHRQhhQR+H4SQMlM+wCK91kPXK77wRInoc0rvxf3nTeAgYiDDeFTg4VHGM5U0g4mGC DKeOlTTUD2KSKBbQHvDirtTgmRxSzjxRemhj1hPgJW+9uGUViWO5aKsPQryOS9np/g3m eNnJPdI7LEx62L1AM5n6GiG4f/a+xqwxGPMDKVb8dWrBuLDfGzr3kOo9gKQOAjQp+bAq OQpg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=2uk8OK+R; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id j11si18100658pjs.73.2019.06.03.08.27.27; Mon, 03 Jun 2019 08:27:44 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=2uk8OK+R; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727454AbfFCPYc (ORCPT + 99 others); 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