From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762306AbcALNnA (ORCPT ); Tue, 12 Jan 2016 08:43:00 -0500 Received: from bombadil.infradead.org ([198.137.202.9]:57923 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752822AbcALNm7 (ORCPT ); Tue, 12 Jan 2016 08:42:59 -0500 Date: Tue, 12 Jan 2016 05:42:48 -0800 From: Christoph Hellwig To: Ingo Molnar Cc: Borislav Petkov , Christoph Hellwig , Andy Lutomirski , Dave Hansen , "H. Peter Anvin" , Thomas Gleixner , "linux-kernel@vger.kernel.org" , Brian Gerst , Oleg Nesterov Subject: Re: Rethinking sigcontext's xfeatures slightly for PKRU's benefit? Message-ID: <20160112134248.GA2319@infradead.org> References: <20151218085914.GA16529@infradead.org> <20151218125753.GF16977@pd.tnic> <20160112133820.GA6840@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160112133820.GA6840@gmail.com> User-Agent: Mutt/1.5.24 (2015-08-30) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 12, 2016 at 02:38:20PM +0100, Ingo Molnar wrote: > > On Fri, Dec 18, 2015 at 12:59:14AM -0800, Christoph Hellwig wrote: > > > Stupid question, but what the heck is PKRU? A grep of the kernel tree > > > shows no results, and a web search returns mostly Thai language results. > > > > That should explain it: > > > > https://lkml.kernel.org/r/20151214190542.39C4886D@viggo.jf.intel.com > > There's also an LWN article from last year, as background: > > https://lwn.net/Articles/643797/ I had actually seen both the thread and the article before, but the "PKRU" subject didn't really lead to either..