Re: To NX or not to NX

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On Mon, Jan 01, 2007 at 04:56:06PM +0100, Ralf Ertzinger wrote:
> Hi.
> 
> Looking through dmesg on my laptop, I noticed the following:
> 
> Using x86 segment limits to approximate NX protection
> 
> While this is certainly nice, the processor is quite capable of real
> NX:
> 
> $ grep nx /proc/cpuinfo 
> flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc pni monitor vmx est tm2 xtpr
> flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc pni monitor vmx est tm2 xtpr
> 
> Is there a reason this is not used?
> 
> kernel is 2.6.19-1.2891, processor is a Intel Core Duo CPU L2400

is NX disabled in the BIOS?

-- 
Matt Domsch
Software Architect
Dell Linux Solutions linux.dell.com & www.dell.com/linux
Linux on Dell mailing lists @ http://lists.us.dell.com

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