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Re: x86_64 ld strange behaviour.
On Fri, Nov 26, 2010 at 6:16 AM, Markus Duft <mduft@gentoo.org> wrote:
> On 11/26/2010 02:37 PM, Alan Modra wrote:
>> On Fri, Nov 26, 2010 at 11:10:59AM +0100, Markus Duft wrote:
>>> i did not have any such problem with the i386 linker.
>>
>> You do, actually. ?The difference is that the i386 max page size is a
>> lot smaller (0x1000 vs. 0x200000), so you didn't notice it..
>>
>> The information you seem to be missing is that for many targets, by
>> default GNU ld produces executables suitable for demand paging. ?This
>> puts constraints on file layout. ?For the simple case where disk page
>> size is equal to virtual memory page size, if you don't have file
>> offset modulo page size equal to vm address modulo page size, then
>> pages off disk can't be read directly into process memory.
>>
>
> ah, i see... can i somehow disable this behaviour? otherwise, i think i can live with my kernel beeing loaded at 2MB instead of 1MB... i just wondered :)
>
You can change the maximum page size via command line option.
--
H.J.