On Thu, 31 Jan 2008, Huang, Ying wrote:
> This patch makes ioremap() can be used to map pages as executable,
> this is needed by EFI support.
> +extern void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
> + enum ioremap_mode mode,
> + enum ioremap_xmode xmode);
> +
Why do you want to add a new API?
addr = ioremap(phys_addr, len);
set_memory_x(addr);
should do what you want already. I think Arjan was not very clear in
his reply yesterday.
We tried to avoid the intermingling of ioremap and the page attribute
settings. We just kept the cached/uncached part.
Now thinking about it further, we should probably fully decouple the
mapping and the attribute change and remove the enum argument from
__ioremap and change the implementations of ioremap_cached and
ioremap_uncached to do the attribute setting after the remap.
That way ioremap_chached and ioremap_uncached just would become what
they should be: conveniance functions for the developers.
Thanks,
tglx
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