lkml.org 
[lkml]   [2011]   [Oct]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] uio: Support 36-bit physical addresses on 32-bit systems
On Wed, Oct 12, 2011 at 05:32:29PM +0200, Hans J. Koch wrote:
> On Wed, Oct 12, 2011 at 09:35:45AM -0500, Kumar Gala wrote:
> > From: Kai Jiang <Kai.Jiang@freescale.com>
> >
> > To support >32-bit physical addresses for UIO_MEM_PHYS type we need to
> > extend the width of 'addr' in struct uio_mem. Numerous platforms like
> > embedded PPC, ARM, and X86 have support for systems with larger physical
> > address than logical.
> >
> > Since 'addr' may contain a physical, logical, or virtual address the
> > easiest solution is to just change the type to 'unsigned long long'
> > regardless of which type is utilized.
>
> No. There's phys_addr_t for that purpose, defined in include/linux/types.h.
> Please use that.

I forgot: If you resend this, please update the documentation as well.
(Documentation/DocBook/uio-howto.tmpl)

Thanks,
Hans



\
 
 \ /
  Last update: 2011-10-12 18:21    [W:0.066 / U:4.860 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site