Re: [PATCH 1/8] x86, kaslr: get kaslr_enabled back correctly

[Yinghai Lu]

On Mon, Mar 2, 2015 at 6:53 AM, Borislav Petkov <bp@xxxxxxx> wrote:
> Well, it seems to work here but it still doesn't look reliable enough to
> me. And this addon_zo thing of arbitrary 256K is strange.

Thanks for check that out.

That is not arbitrary number. Need to make that bigger than _end - _rodata

> objdump -t arch/x86/boot/compressed/vmlinux | grep \ _end
0000000000996000 g       .pgtable    0000000000000000 _end
> objdump -t arch/x86/boot/compressed/vmlinux | grep \ _rodata
0000000000981780 g       .rodata    0000000000000000 _rodata

We only get that size after arch/x86/boot/compressed/vmlinux

but need number during building kernel vmlinux.

other way would be just increase init_size in arch/x86/boot/header.S
instead of put it BRK area.

Thanks

Yinghai
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