Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752291AbaDXG0k (ORCPT ); Thu, 24 Apr 2014 02:26:40 -0400 Received: from relay1.mentorg.com ([192.94.38.131]:49574 "EHLO relay1.mentorg.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750860AbaDXG0g (ORCPT ); Thu, 24 Apr 2014 02:26:36 -0400 Message-ID: <5358AE96.9010006@codesourcery.com> Date: Thu, 24 Apr 2014 14:26:30 +0800 From: Chung-Lin Tang User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 MIME-Version: 1.0 To: "Pinski, Andrew" CC: Ley Foon Tan , Arnd Bergmann , "H. Peter Anvin" , Linux-Arch , "linux-kernel@vger.kernel.org" , "linux-doc@vger.kernel.org" , "Catalin.Marinas@arm.com" , Andrew Pinski Subject: Re: [PATCH 00/28] nios2 Linux kernel port References: <1397824031-4892-1-git-send-email-lftan@altera.com> <5354AD36.5090809@zytor.com> <16597012.pEkDc99HDN@wuerfel> ,<5357FF8E.9010809@codesourcery.com> In-Reply-To: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-OriginalArrivalTime: 24 Apr 2014 06:26:33.0676 (UTC) FILETIME=[232298C0:01CF5F86] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2014/4/24 上午 02:15, Pinski, Andrew wrote: > >> > On Apr 23, 2014, at 10:59 AM, "Chung-Lin Tang" wrote: >> > >>> >> On 2014/4/22 07:20 PM, Ley Foon Tan wrote: >>> >> On Tue, Apr 22, 2014 at 6:56 PM, Arnd Bergmann wrote: >>>>> >>>> On Tuesday 22 April 2014 18:37:11 Ley Foon Tan wrote: >>>>>>> >>>>>> Hi Arnd and Peter Anvin, >>>>>>> >>>>>> >>>>>>> >>>>>> Other than 64-bit time_t, clock_t and suseconds_t, can you confirm >>>>>>> >>>>>> that we don't need to have 64 bit off_t? See detail in link below. >>>>>>> >>>>>> I can submit the patches for 64-bit time changes >>>>>>> >>>>>> (include/asm-generic/posix_types.h and other archs) if everyone is >>>>>>> >>>>>> agreed on this. >>>>> >>>> >>>>> >>>> Yes. >>> >> Okay, will doing that. >> > >> > I believe that arm64 ILP32 will also be affected. What is the status of >> > this configuration? Has the glibc/kernel ABI been finalized? > Not yet. I am still working out the signal handling part. But we already agreed on 64bit time_t, clock_t, and suseconds_t. And we agreed to a 64bit offset_t too. > > On a related note suseconds in the timespec in posix is defined to be long. So it would nice if the kernel ignores the upper 32bits so we (glibc developers) can fix this for new targets including x32 and arm64/ilp32. Hmm, but that means for purely 32-bit architectures like nios2, which unlike x86_64 or arm64, never has a 64-bit mode, suseconds_t as a 64-bit type in the kernel is simply wasted. Chung-Lin -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/