>-----Original Message-----
quoted text
>From: Andreas Herrmann3 [mailto:andreas.herrmann3@amd.com] 
>Sent: Friday, January 18, 2008 8:11 AM
>To: Pallipadi, Venkatesh
>Cc: Ingo Molnar; Siddha, Suresh B; ak@muc.de; 
>ebiederm@xmission.com; rdreier@cisco.com; 
>torvalds@linux-foundation.org; gregkh@suse.de; 
>airlied@skynet.ie; davej@redhat.com; tglx@linutronix.de; 
>hpa@zytor.com; akpm@linux-foundation.org; arjan@infradead.org; 
>Barnes, Jesse; davem@davemloft.net; linux-kernel@vger.kernel.org
>Subject: Re: [patch 0/4] x86: PAT followup - Incremental 
>changes and bug fixes
>
>On Thu, Jan 17, 2008 at 03:04:10PM -0800, Venki Pallipadi wrote:
>>
>> Below is another potential fix for the problem here. Going 
>through ACPI
>> ioremap usages, we found at one place the mapping is cached 
>for possible
>> optimization reason and not unmapped later. Patch below always unmaps
>> ioremap at this place in ACPICA.
>
>The patch does not fix the problem. The conflicting cache 
>attributes are
>still there.
>

Andreas,

Could you also try the patch Suresh Siddha sent out yesterday. That
covers the case where the attribute was not getting removed even after
unmap was called.

Thanks,
Venki
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