Messages in this thread |  | | Date | Sat, 11 Nov 2000 17:26:10 +0100 | From | Andrea Arcangeli <> | Subject | Re: bzImage ~ 900K with i386 test11-pre2 |
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On Sat, Nov 11, 2000 at 02:51:21PM +0000, Tigran Aivazian wrote: > Yes, Andrea, I know that paging is disabled at the point of loading the > image but I was talking about the inability to boot (boot == complete > booting, i.e. at least reach start_kernel()) a kernel with very large > .data or .bss segments because of various reasons -- one of which, > probably,is the inadequacy of those pg0 and pg1 page tables set up in > head.S
Ah ok, I thought you were talking about bootloader.
About the initial pagetable setup on i386 port there's certainly a 3M limit on the size of the kernel image, but it's trivial to enlarge it. BTW, exactly for that kernel size limit reasons in x86-64 I defined a 40Mbyte mapping where we currently have a 4M mapping and that's even simpler to enlarge since they're 2M PAE like pagetables.
Basically as far as the kernel can get loaded in memory correctly we have no problem :)
> (which Peter says is infinite?) or the ones on .text/.data/.bss (and what > exactly are they?)? See my question now?
We sure hit the 3M limit on the .bss clearing right now.
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