Re: [PATCH 4/5] x86: add executable mapping support to ioremap

[Andi Kleen]

> addr = ioremap(phys_addr, len);
> set_memory_x(addr);
> if (phys_addr < (end_pfn_mapped >> PAGE_SHIFT))
>         set_memory_x(__va(phys_addr));

If you just need the ioremap executable there is no reason to split 
up the direct mapping for this too. The x86 architecture does not require
x bits to be coherent between mappings; only the caching attributes.

-Andi

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