From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755901AbaDXKOG (ORCPT ); Thu, 24 Apr 2014 06:14:06 -0400 Received: from mail-qg0-f52.google.com ([209.85.192.52]:59065 "EHLO mail-qg0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755632AbaDXKN7 (ORCPT ); Thu, 24 Apr 2014 06:13:59 -0400 MIME-Version: 1.0 In-Reply-To: References: <1397824031-4892-1-git-send-email-lftan@altera.com> <1397824031-4892-14-git-send-email-lftan@altera.com> Date: Thu, 24 Apr 2014 18:13:58 +0800 X-Google-Sender-Auth: LYJCxXo7rDbUAItD2o-S47CRXI0 Message-ID: Subject: Re: [PATCH 17/28] nios2: Signal handling support From: Ley Foon Tan To: Richard Weinberger Cc: Linux-Arch , LKML , "linux-doc@vger.kernel.org" , cltang@codesourcery.com Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Apr 24, 2014 at 6:01 PM, Ley Foon Tan wrote: > On Sun, Apr 20, 2014 at 3:29 AM, Richard Weinberger > wrote: > >>> + >>> + /* Default to using normal stack. */ >>> + usp = regs->sp; >>> + >>> + /* This is the X/Open sanctioned signal stack switching. */ >>> + if ((ka->sa.sa_flags & SA_ONSTACK) && (current->sas_ss_sp != 0)) { >>> + if (!on_sig_stack(usp)) >>> + usp = current->sas_ss_sp + current->sas_ss_size; >>> + } >> >> You can use sigsp() here. > Okay. > I just noticed that sigsp() have struct ksignal argument. We can use sigsp() for nios2 because it doesn't have struct ksignal. unsigned long sigsp(unsigned long sp, struct ksignal *ksig);