Re: kernel-PAE and NX (No eXecute)

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On Mi November 14 2007, Dave Jones wrote:
> On Mon, Nov 12, 2007 at 08:08:08PM +0100, Till Maas wrote:

>  > I read
>  > that the 2.6.23 kernel supports NX without the need to activate 64G
>  > memory support?
>
> not true.

Here is a kernel git changelog entry that says it is true:

| i386: divorce CONFIG_X86_PAE from CONFIG_HIGHMEM64G
| 
| PAE is useful for more than supporting more than 4GB RAM.  It supports
| expanded swapspace and NX executable protections.  Some users may want NX
| or expanded swapspace support without the overhead or instability of
| highmem.  For these reasons, the following patch divorces CONFIG_X86_PAE
| from CONFIG_HIGHMEM64G.

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c673f1a9d994de501b674b2bb6a48bd5e912afe0

Regards,
Till

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