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xen-devel
[Xen-devel] Re: [PATCH 6 of 7] x86: use early_ioremap in __acpi_map_tabl
Andi Kleen wrote:
> On Sun, Sep 07, 2008 at 03:21:18PM -0700, Jeremy Fitzhardinge wrote:
>
>> __acpi_map_table() effectively reimplements early_ioremap(). Rather
>> than have that duplication, just implement it in terms of
>> early_ioremap().
>>
>> However, unlike early_ioremap(), __acpi_map_table() just maintains a
>> single mapping which gets replaced each call, and has no corresponding
>> unmap function. Implement this by just removing the previous mapping
>> each time its called. Unfortunately, this will leave a stray mapping
>> at the end.
>>
>
> It would be better to just fix the ACPI code to unmap.
I was concerned that would cause lots of cross-arch churn, but of course
the only other relevant architecture is ia64. I'll prep a followup patch.
J
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