RE: [patch 0/4] x86: PAT followup - Incremental changes and bug fixes

From: Pallipadi, Venkatesh
Date: Fri Jan 18 2008 - 12:12:31 EST




>-----Original Message-----
>From: Andreas Herrmann3 [mailto:andreas.herrmann3@xxxxxxx]
>Sent: Friday, January 18, 2008 8:11 AM
>To: Pallipadi, Venkatesh
>Cc: Ingo Molnar; Siddha, Suresh B; ak@xxxxxx;
>ebiederm@xxxxxxxxxxxx; rdreier@xxxxxxxxx;
>torvalds@xxxxxxxxxxxxxxxxxxxx; gregkh@xxxxxxx;
>airlied@xxxxxxxxx; davej@xxxxxxxxxx; tglx@xxxxxxxxxxxxx;
>hpa@xxxxxxxxx; akpm@xxxxxxxxxxxxxxxxxxxx; arjan@xxxxxxxxxxxxx;
>Barnes, Jesse; davem@xxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx
>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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