linux-kernel - Re: [PATCH] remove PAGE_SIZE from headers

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Date:	Sat, 14 Jul 2007 23:34:12 +0200
From:	Olaf Hering <olaf@...fle.de>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] remove PAGE_SIZE from headers_install

On Sat, Jul 14, H. Peter Anvin wrote:

> Olaf Hering wrote:
> > Declare PAGE_SIZE as getpagesize() for userspace.
> > PAGE_SIZE is used in resource.h and shm.h
> 
> I would think it would be better to not define it at all.  Several
> architectures already don't have PAGE_SIZE visible to userspace in any way.

i386 has it, so everyone uses it.

asm/user.h uses it for NBPG, which appears in gdb configure scripts.
Maybe it doesnt trigger there because the sysconf SC_* macros match.

other places where asm/page.h is used:
util-linux configure scripts, strace, xorg-11, and alot more.
Have to check if they really need it.
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