linux-kernel - Re: [RFC PATCH v6 00/17] ILP32 for ARM64

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Message-ID: <20151109155042.GA3550@yury-N73SV>
Date:	Mon, 9 Nov 2015 18:50:42 +0300
From:	Yury Norov <ynorov@...iumnetworks.com>
To:	<pinskia@...il.com>
CC:	Arnd Bergmann <arnd@...db.de>, Andreas Schwab <schwab@...e.de>,
	<linux-arm-kernel@...ts.infradead.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH v6 00/17] ILP32 for ARM64

On Mon, Nov 09, 2015 at 10:52:32PM +0800, pinskia@...il.com wrote:
> 
> 
> > On Nov 9, 2015, at 10:36 PM, Arnd Bergmann <arnd@...db.de> wrote:
> > 
> >> On Monday 09 November 2015 15:33:51 Andreas Schwab wrote:
> >> Arnd Bergmann <arnd@...db.de> writes:
> >> 
> >>>> On Monday 09 November 2015 14:23:59 Andreas Schwab wrote:
> >>>> Yury Norov <ynorov@...iumnetworks.com> writes:
> >>>> 
> >>>>> This is what I run:
> >>>>> https://github.com/norov/glibc/tree/thunderx-ilp32-32time_toff_t
> >>>> 
> >>>> That doesn't work for me:
> >>>> 
> >>>> ../sysdeps/unix/sysv/linux/generic/sysdep.h:24:22: error: ‘__NR_llseek’ undeclar
> >>>> ed (first use in this function)
> >>>> ../sysdeps/unix/sysv/linux/aarch64/sysdep.h:41:32: error: ‘__NR_fcntl64’ undeclared (first use in this function)
> >>> 
> >>> Did you re-export the kernel headers that you use as the base?
> >> 
> >> I'm using the patched 4.3 kernel headers.
> > 
> > Ok.
> > 
> >> Why is <asm/bitsperlong.h> defining __BITS_PER_LONG to 64 unconditionally?
> > 
> > It should not, that is a bug. I don't know how Yury built his glibc,
> > but it can't work if __BITS_PER_LONG is wrong.
> 
> 
> Looks like I had changed the header file manually for building glibc and Yury and myself missed that when  he updated the patches. 
> 
> 
> Thanks,
> Andrew
> 
> > 
> >    Arnd


No, it's my fault. I forgot to add a patch that sets __BITS_PER_LONG
to 32. I'll send it here now.
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