Re: [CFT] ELF Relocatable x86 and x86_64 bzImages

[Andi Kleen]

ebiederm@xxxxxxxxxxxx (Eric W. Biederman) writes:
> 
> Do you know what code had problems having _PAGE_NX set.
> What are we doing with early_ioremap the requires execute
> permissions.  It doesn't sound right that we would need
> this.

The early EM64T CPUs didn't support NX and would GPF when
they hit the bit. That is why you always need to mask 
with __supported_pte_mask when using _PAGE_NX.

-Andi
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