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Subject: Re: [kernel-hardening] Re: [PATCH] x86: make IDT read-only
From: Kees Cook <keescook@chromium.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: "kernel-hardening@lists.openwall.com" 
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On Tue, Apr 9, 2013 at 11:26 AM, H. Peter Anvin <hpa@zytor.com> wrote:
> On 04/09/2013 11:22 AM, Kees Cook wrote:
>>
>> $ ./sgdt
>> ffff88001fc04000
>> # cat /sys/kernel/debug/kernel_page_tables
>> ...
>> ---[ Low Kernel Mapping ]---
>> ...
>> 0xffff880001e00000-0xffff88001fe00000         480M     RW         PSE GLB NX pmd
>>
>
> That is the 1:1 memory map area...

Meaning what?

-Kees

--
Kees Cook
Chrome OS Security
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