Andi Kleen wrote:
Jeremy Fitzhardinge <jeremy@xxxxxxxx> writes:
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.
Stray mappings are dangerous. They can lead to illegal cache aliases
later. Better avoid them.
I guess ACPI could call a cleanup function after it's done with
all early mappings.
Right. But Yinghai (I think) went through and made all the acpi
mappings get properly mapped and unmapped, so my patch is moot.
J
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