From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752570AbbCQHNY (ORCPT ); Tue, 17 Mar 2015 03:13:24 -0400 Received: from mail-wi0-f176.google.com ([209.85.212.176]:38614 "EHLO mail-wi0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752008AbbCQHNW (ORCPT ); Tue, 17 Mar 2015 03:13:22 -0400 Date: Tue, 17 Mar 2015 08:13:16 +0100 From: Ingo Molnar To: Borislav Petkov Cc: Denys Vlasenko , linux-tip-commits@vger.kernel.org, linux-kernel@vger.kernel.org, keescook@chromium.org, ast@plumgrid.com, fweisbec@gmail.com, oleg@redhat.com, tglx@linutronix.de, torvalds@linux-foundation.org, hpa@zytor.com, wad@chromium.org, rostedt@goodmis.org Subject: Re: [tip:x86/asm] x86/asm/entry/64: Remove unused thread_struct::usersp Message-ID: <20150317071316.GA22758@gmail.com> References: <1425984307-2143-2-git-send-email-dvlasenk@redhat.com> <20150316164707.GB23015@pd.tnic> <55075736.7030003@redhat.com> <20150317070830.GA19645@pd.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150317070830.GA19645@pd.tnic> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Borislav Petkov wrote: > On Mon, Mar 16, 2015 at 11:20:38PM +0100, Denys Vlasenko wrote: > > What's your config? > > Attached. Could you try just this patch (on top of broken tip:master): diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 66a1954439ea..997e6a1c288f 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -496,6 +496,7 @@ struct thread_struct { #ifdef CONFIG_X86_32 unsigned long sysenter_cs; #else + unsigned long usersp; /* Copy from PDA */ unsigned short es; unsigned short ds; unsigned short fsindex; to see whether it's the changed values of old_rsp, or the change in sizeof(thread_struct), that causes the regression? Thanks, Ingo