kernel-PAE and NX (No eXecute)
opensource at till.name
Wed Nov 14 09:00:09 UTC 2007
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.
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