From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin LaHaise Subject: Re: linux-next: build failure after merge of the aio tree Date: Thu, 4 Feb 2016 08:41:42 -0500 Message-ID: <20160204134142.GA16315@kvack.org> References: <20160112164034.0fe945a7@canb.auug.org.au> <20160112163835.GD347@kvack.org> <20160127134024.0fababf6@canb.auug.org.au> <20160129113056.GP10826@n2100.arm.linux.org.uk> <20160204131959.6695c7bf@canb.auug.org.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from kanga.kvack.org ([205.233.56.17]:45017 "EHLO kanga.kvack.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755329AbcBDNln (ORCPT ); Thu, 4 Feb 2016 08:41:43 -0500 Content-Disposition: inline In-Reply-To: <20160204131959.6695c7bf@canb.auug.org.au> Sender: linux-next-owner@vger.kernel.org List-ID: To: Stephen Rothwell Cc: Geert Uytterhoeven , Russell King - ARM Linux , Linux-Next , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" On Thu, Feb 04, 2016 at 01:19:59PM +1100, Stephen Rothwell wrote: > Hi Benjamin, > > On Fri, 29 Jan 2016 13:03:39 +0100 Geert Uytterhoeven wrote: > > > > On Fri, Jan 29, 2016 at 12:30 PM, Russell King - ARM Linux > > wrote: > > >> Background: new aio code is adding __get_user() calls referencing 64 > > >> bit quantities (__u64 and __s64). > > > > > > There's lots more architectures which do not support 64-bit get_user() > > > _or_ __get_user(): avr32, blackfin, metag for example, and m68k which > > > has this interesting thing "/* case 8: disabled because gcc-4.1 has a > > > broken typeof \" in its *get_user() implementation. > > > > And if you enable it again, you get lots of "warning: cast to pointer from > > integer of different size", like you mentioned. > > Any thoughts? I am still using the version of tha aio tree from > next-20160111. I am still convinced that this is an architecture issue. Given that 64 bit values work in the *get_user implementations on other architectures, I see no reason there should need to be a workaround for this in common code. -ben > -- > Cheers, > Stephen Rothwell -- "Thought is the essence of where you are now."