From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965062AbcJHFjM (ORCPT ); Sat, 8 Oct 2016 01:39:12 -0400 Received: from mail-wm0-f65.google.com ([74.125.82.65]:36854 "EHLO mail-wm0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934857AbcJHFjJ (ORCPT ); Sat, 8 Oct 2016 01:39:09 -0400 Date: Sat, 8 Oct 2016 07:39:04 +0200 From: Ingo Molnar To: Andy Lutomirski Cc: x86@kernel.org, Rik van Riel , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH] x86/fpu: Remove 'eagerfpu=' docs Message-ID: <20161008053904.GA7092@gmail.com> References: <6c6e48fa5b6a51a70bf1ffd149a7125c5fd349be.1475859005.git.luto@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6c6e48fa5b6a51a70bf1ffd149a7125c5fd349be.1475859005.git.luto@kernel.org> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Andy Lutomirski wrote: > Now that eagerfpu= is gone, remove it from the docs. Whoops. > > Fixes: ca6938a1cd8a ("x86/fpu: Hard-disable lazy FPU mode") > Signed-off-by: Andy Lutomirski > --- > Documentation/kernel-parameters.txt | 6 ------ > 1 file changed, 6 deletions(-) > > diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt > index 25037ded3683..8083a3432482 100644 > --- a/Documentation/kernel-parameters.txt > +++ b/Documentation/kernel-parameters.txt > @@ -1034,12 +1034,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted. > nopku [X86] Disable Memory Protection Keys CPU feature found > in some Intel CPUs. > > - eagerfpu= [X86] > - on enable eager fpu restore > - off disable eager fpu restore > - auto selects the default scheme, which automatically > - enables eagerfpu restore for xsaveopt. > - > module.async_probe [KNL] > Enable asynchronous probe on this module. Could we make the eagerfpu removal more exhaustive please: triton:~/tip> git grep -i eagerfpu Documentation/kernel-parameters.txt: eagerfpu= [X86] Documentation/kernel-parameters.txt: enables eagerfpu restore for xsaveopt. arch/x86/include/asm/cpufeatures.h:/* free, was #define X86_FEATURE_EAGER_FPU ( 3*32+29) * "eagerfpu" Non lazy FPU restore */ arch/x86/include/asm/fpu/types.h: * or not. On such CPUs we activate the non-lazy ('eagerfpu') arch/x86/mm/pkeys.c: * using eagerfpu mode makes this possible. tools/arch/x86/include/asm/cpufeatures.h:#define X86_FEATURE_EAGER_FPU ( 3*32+29) /* "eagerfpu" Non lazy FPU restore */ Thanks, Ingo