Re: [PATCH v2] x86, mm: set NX across entire PMD at boot

From: Yinghai Lu
Date: Sun Nov 16 2014 - 22:26:46 EST


On Sun, Nov 16, 2014 at 10:52 AM, Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
>> >
>> > Are you sure? For me, _brk_end isn't far enough:
>> >
>> > [ 1.475572] all_end: 0xffffffff82df5000
>> > [ 1.476736] _brk_end: 0xffffffff82dd6000
>>
>> Yes. _brk_end should be small then &_end.
>
> Wrong. _brk_end can move up to _end, i.e. to __brk_limit.

Confused. What is wrong? _brk_end is not smaller than &_end?

Yinghai
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