From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on archive.lwn.net X-Spam-Level: X-Spam-Status: No, score=-5.6 required=5.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, T_DKIM_INVALID autolearn=unavailable autolearn_force=no version=3.4.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by archive.lwn.net (Postfix) with ESMTP id 9A3217D048 for ; Wed, 11 Jul 2018 15:28:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389066AbeGKPdI (ORCPT ); Wed, 11 Jul 2018 11:33:08 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:56042 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732481AbeGKPdI (ORCPT ); Wed, 11 Jul 2018 11:33:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Transfer-Encoding :Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Sender:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=CiMpRUlb2je5lcCUpzH2mozLi3P9QJXirXk8qkgmZyk=; b=FDHs7YfAeoUgrqNmcF1wrBN8pT hCMrKv0JuJffqsMqFdmWOBrbUunnyhtbnpdhZKGisKh7IVVeXiaJcuHe404kBkak5NM2RlHcR37b1 YV9pUBbstCoye4lK4KjcDa2hiRVXHukeMBMm7mCZbWU1CZCvwnnTxgEFPRYwOmHGUgpRA9+R9hMhk FgIZVKX31ekdGOTRH6Ijxnr0pdKzDEc5IZ+4DRP3my1Tkdl5g4uPJzvfQ1qcqbJEK1C5TJsC3I34W 3NIfPuhRuT7lF3/g7uz1IFa3nZc3o2PvqQ4cwq7kf2KvK8ESbIK2TWSDnIrITKnEbD6eyQs1Z32hb OreDNHTw==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=hirez.programming.kicks-ass.net) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1fdH24-00071i-7V; Wed, 11 Jul 2018 15:27:56 +0000 Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 9369220297EAB; Wed, 11 Jul 2018 17:27:54 +0200 (CEST) Date: Wed, 11 Jul 2018 17:27:54 +0200 From: Peter Zijlstra 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. Shankar" , Vedvyas Shanbhogue Subject: Re: [RFC PATCH v2 18/27] x86/cet/shstk: Introduce WRUSS instruction Message-ID: <20180711152754.GJ2476@hirez.programming.kicks-ass.net> References: <20180710222639.8241-1-yu-cheng.yu@intel.com> <20180710222639.8241-19-yu-cheng.yu@intel.com> <20180711094549.GA2476@hirez.programming.kicks-ass.net> <1531321089.13297.4.camel@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1531321089.13297.4.camel@intel.com> User-Agent: Mutt/1.10.0 (2018-05-17) Sender: linux-doc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org On Wed, Jul 11, 2018 at 07:58:09AM -0700, Yu-cheng Yu wrote: > On Wed, 2018-07-11 at 11:45 +0200, Peter Zijlstra wrote: > > On Tue, Jul 10, 2018 at 03:26:30PM -0700, Yu-cheng Yu wrote: > > > > > > diff --git a/arch/x86/lib/x86-opcode-map.txt b/arch/x86/lib/x86- > > > opcode-map.txt > > > index e0b85930dd77..72bb7c48a7df 100644 > > > --- a/arch/x86/lib/x86-opcode-map.txt > > > +++ b/arch/x86/lib/x86-opcode-map.txt > > > @@ -789,7 +789,7 @@ f0: MOVBE Gy,My | MOVBE Gw,Mw (66) | CRC32 > > > Gd,Eb (F2) | CRC32 Gd,Eb (66&F2) > > >  f1: MOVBE My,Gy | MOVBE Mw,Gw (66) | CRC32 Gd,Ey (F2) | CRC32 > > > Gd,Ew (66&F2) > > >  f2: ANDN Gy,By,Ey (v) > > >  f3: Grp17 (1A) > > > -f5: BZHI Gy,Ey,By (v) | PEXT Gy,By,Ey (F3),(v) | PDEP Gy,By,Ey > > > (F2),(v) > > > +f5: BZHI Gy,Ey,By (v) | PEXT Gy,By,Ey (F3),(v) | PDEP Gy,By,Ey > > > (F2),(v) | WRUSS Pq,Qq (66),REX.W > > >  f6: ADCX Gy,Ey (66) | ADOX Gy,Ey (F3) | MULX By,Gy,rDX,Ey (F2),(v) > > >  f7: BEXTR Gy,Ey,By (v) | SHLX Gy,Ey,By (66),(v) | SARX Gy,Ey,By > > > (F3),(v) | SHRX Gy,Ey,By (F2),(v) > > >  EndTable > > Where are all the other instructions? ISTR that documentation patch > > listing a whole bunch of new instructions, not just wuss. > > Currently we only use WRUSS in the kernel code.  Do we want to add all > instructions here? Yes, since we also use the in-kernel decoder to decode random userspace code. -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html