linux-kernel - Re: [PATCH 00/24] Unify integer type definitions, and add fixed type constructor macros

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Message-ID: <4814BB95.8090808@zytor.com>
Date:	Sun, 27 Apr 2008 10:44:53 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Arch Mailing List <linux-arch@...r.kernel.org>
Subject: Re: [PATCH 00/24] Unify integer type definitions, and add fixed type
 constructor macros

Arnd Bergmann wrote:
> On Friday 25 April 2008, H. Peter Anvin wrote:
>> This patchset unifies the integer definitions across all the
>> <asm-*/types.h> files, replacing them with two asm-generic files, one
>> for the LL64 model (all 32-bit architectures plus x86-64) and one for
>> the L64 model (all other 64-bit architectures.)
> 
> I started hacking on a similar patch just yesterday, but with a slightly
> different goal. My intention was to move the headers in a direction
> where a new architecture (microblaze being the next one) would no longer
> have to care about ABI defining headers at all, but just use the defaults
> from a single #include line.
> 
> I could deal with x86 by leaving the current asm-x86/types.h in place,
> and change all the others so they can use the common one. The only
> difference here would be umode_t and dma_addr_t, which are irregularly
> defined on a few architectures, but we can assume reasonable defaults, as in
> 

It seems reasonable to implement what you are proposing on top of my 
changes, IMO.

	-hpa
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