[PATCH 2/12] i386: align data section to 4K boundary

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Andi Kleen wrote:
> On Tuesday 03 October 2006 19:06, Vivek Goyal wrote:
>> o Currently there is no specific alignment restriction in linker script
>>   and in some cases it can be placed non 4K aligned addresses. This fails
>>   kexec which checks that segment to be loaded is page aligned.
>> o I guess, it does not harm data segment to be 4K aligned.
> iirc P4 optimization guide even recommends to keep writable data 
> away one page from code to avoid some cache invalidations. But:

Yes, that's why the .rodata section should be in between.

It's not just the P4, either.


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