From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction Date: Wed, 11 Jul 2018 17:30:44 +0200 Message-ID: <20180711153044.GK2476@hirez.programming.kicks-ass.net> References: <20180710222639.8241-1-yu-cheng.yu@intel.com> <20180710222639.8241-19-yu-cheng.yu@intel.com> <20180711094448.GZ2476@hirez.programming.kicks-ass.net> <1531321615.13297.9.camel@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Return-path: Content-Disposition: inline In-Reply-To: <1531321615.13297.9.camel@intel.com> Sender: linux-kernel-owner@vger.kernel.org To: Yu-cheng Yu Cc: x86@kernel.org, "H. Peter Anvin" , Thomas Gleixner , Ingo Molnar , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, Arnd Bergmann , Andy Lutomirski , Balbir Singh , Cyrill Gorcunov , Dave Hansen , Florian Weimer , "H.J. Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Ravi V. Shan List-Id: linux-api@vger.kernel.org On Wed, Jul 11, 2018 at 08:06:55AM -0700, Yu-cheng Yu wrote: > On Wed, 2018-07-11 at 11:44 +0200, Peter Zijlstra wrote: > > What happened to: > > > >   https://lkml.kernel.org/r/1528729376.4526.0.camel@2b52.sc.intel.com > > Yes, I put that in once and realized we only need to skip the > instruction and return err.  Do you think we still need a handler for > that? I find that other form more readable, but then there's Nadav doing asm macros to shrink inline asm thingies so maybe he has another suggestion.