lkml.org 
[lkml]   [2008]   [Feb]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
DateSun, 17 Feb 2008 21:18:41 -0800
FromArjan van de Ven <>
SubjectRe: 2.6.25-rc2-mm1: WARNING at arch/x86/mm/ioremap.c:129
On Sun, 17 Feb 2008 23:58:03 -0500
"Brown, Len" <len.brown@intel.com> wrote:

> >Len: This WARN_ON says that ACPI is trying to call ioremap()
> >on memory that the e820_table
> >lists as "kernel owned". Do you know why ACPI would do this?
> >Would ACPI get upset if
> >the kernel would tell it to take a hike?
>
> Depends on the BIOS -- as it is the BIOS AML that is making this
> request.

is there any possible valid scenario where the BIOS AML would touch memory the
kernel is using? (Since that seems to be what is going on; I'll cook up a diagnostics
patch to get more info but the warning gets spewed if ioremap() is trying to map
memory the kernel sees as ram)


--
If you want to reach me at my work email, use arjan@linux.intel.com
For development, discussion and tips for power savings,
visit http://www.lesswatts.org


\
 
 \ /
  Last update: 2008-02-18 06:21    [from the cache]
©2003-2010