From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vineet Gupta Subject: Re: [PATCH v2 19/76] ARC: Signal handling Date: Sat, 19 Jan 2013 19:40:10 +0530 Message-ID: <50FAA942.2050507@synopsys.com> References: <1358511930-7424-1-git-send-email-vgupta@synopsys.com> <1358511930-7424-20-git-send-email-vgupta@synopsys.com> <20130119032357.GB23552@ZenIV.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from us01smtp2.synopsys.com ([198.182.44.80]:36799 "EHLO kiruna.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751810Ab3ASOKY (ORCPT ); Sat, 19 Jan 2013 09:10:24 -0500 In-Reply-To: <20130119032357.GB23552@ZenIV.linux.org.uk> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Al Viro Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, arnd@arndb.de On Saturday 19 January 2013 08:53 AM, Al Viro wrote: > On Fri, Jan 18, 2013 at 05:54:33PM +0530, Vineet Gupta wrote: >> +SYSCALL_DEFINE0(rt_sigreturn) >> +{ >> + struct rt_sigframe __user *sf; >> + unsigned int magic; >> + int err; >> + struct pt_regs *regs = task_pt_regs(current); > ITYM current_pt_regs()... Done. > >> + if (unlikely(is_do_ss_needed(magic))) >> + if (do_sigaltstack(&sf->uc.uc_stack, NULL, regs->sp) == -EFAULT) > if (!restore_altstack(&sf->uc.uc_stack)) > please... > >> + stk.ss_sp = (void __user *)current->sas_ss_sp; >> + stk.ss_flags = sas_ss_flags(regs->sp); >> + stk.ss_size = current->sas_ss_size; >> + err |= __copy_to_user(&sf->uc.uc_stack, &stk, sizeof(stk)); > that would be > err |= __save_altstack(&frame->uc.uc_stack, regs->sp); > Actually altstack consolidation tracking changes are already present in patch 41/76 - which has other 3.8 specific bits too. This is more of a reflection of my 3.7 baseline and a subsequent migration to 3.8. But you are right, it is creating undue confusion - I'll chop-n-dice-n-squash those bits into appropriate patches. Thx, -Vineet