Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935342AbeAHQ75 (ORCPT + 1 other); Mon, 8 Jan 2018 11:59:57 -0500 Received: from mga04.intel.com ([192.55.52.120]:35940 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933713AbeAHQ7z (ORCPT ); Mon, 8 Jan 2018 11:59:55 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.46,330,1511856000"; d="scan'208";a="18425721" Subject: Re: [PATCH RFC 0/4] Per-task PTI activation To: Willy Tarreau , linux-kernel@vger.kernel.org, x86@kernel.org References: <1515427939-10999-1-git-send-email-w@1wt.eu> Cc: tglx@linutronix.de, gnomes@lxorguk.ukuu.org.uk, torvalds@linux-foundation.org, Andy Lutomirski From: Dave Hansen Message-ID: <2363e178-5237-faca-264f-757cf7f40d3c@intel.com> Date: Mon, 8 Jan 2018 08:59:54 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 MIME-Version: 1.0 In-Reply-To: <1515427939-10999-1-git-send-email-w@1wt.eu> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: On 01/08/2018 08:12 AM, Willy Tarreau wrote: > I could experiment a bit with the possibility to enable/disable PTI per > task. Please keep in mind that it's not my area of experitise at all, but > doing so I could recover the initial performance without disabling PTI on > the whole system. This cc list is way too small. Please at *least* include me and Andy on this kind of stuff.