Re: [PATCH 6/6] x86: kaslr: relocate base offset at boot

[H. Peter Anvin]

No.  Fixing one bootloader is almost impossible.  Fixing them all is a Sisiphyean task.

Yinghai Lu <yinghai@xxxxxxxxxx> wrote:

>On Mon, Apr 15, 2013 at 7:36 PM, H. Peter Anvin <hpa@xxxxxxxxx> wrote:
>> On 04/15/2013 03:00 PM, Yinghai Lu wrote:
>>>
>>> looks you are trying redo the work for bootloader to pick loaded
>phys addr.
>>>
>>
>> Well, that is exactly what they are doing.  On top of that they also
>> need to randomize the 64-bit virtual mapping.
>>
>> I wonder if we need a bootloader bit to inhibit kaslr in addition to
>the
>> command line...
>
>so let the bootloader to parse kaslr and pick ramdom address,
>and kernel arch/x86/boot/compressed/head_64.S to pick random virtual
>address?
>
>Yinghai

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