Re: check-bios-nx

2010-05-11 Thread Kees Cook
On Mon, May 10, 2010 at 05:41:28PM -1000, Paul Graydon wrote: > If, however, it actually is a 3Ghz chip then it'll be this one: > > http://processorfinder.intel.com/details.aspx?sSpec=SL7PU This should have NX, but I don't know what the mapping is between the "stepping" as "1" vs D0, E0, G1, etc.

Re: check-bios-nx

2010-05-11 Thread Kees Cook
> processor : 0 > > vendor_id : GenuineIntel > > cpu family : 15 > > model : 4 > > model name : Intel(R) Pentium(R) 4 CPU 3.00GHz > > stepping: 1 So, this is likely a bug a check-bios-nx. That script attempts to make a gu

Re: check-bios-nx

2010-05-10 Thread Eric
Good call Jim, Yeah I would like to follow this one, keep it on the server list. Cheers, E I'm mobile, excuse the type-o's Sent from my phone. On May 10, 2010, at 7:57 PM, Jim Tarvid wrote: Fascinating in a perverse way. The NX (no execute bit) is a tacit concession that Von Neumann ar

Re: check-bios-nx

2010-05-10 Thread Mike.lifeguard
On 10-05-11 12:41 AM, Paul Graydon wrote: > From the information provided it's a bit uncertain what we're dealing > with. The dmidecode information suggests (possibly?) that the CPU is > underclocked, as it's maximum speed is 3.4Ghz > If underclocked then the CPU isn't capable of NX. If it's

Re: check-bios-nx

2010-05-10 Thread Paul Graydon
tation, running 2.6.32-21-generic-pae: $ sudo check-bios-nx --verbose This CPU has nx in the flags, so the BIOS is not disabling it. I'm going to make a slight assumption here and presume that as it's a workstation masquerading as a server that it's not in a live internet serving e

Re: check-bios-nx

2010-05-10 Thread Neal McBurnett
On Mon, May 10, 2010 at 10:57:04PM -0400, Jim Tarvid wrote: > Fascinating in a perverse way. The NX (no execute bit) is a tacit concession > that Von Neumann architecture is a mistake. Not sure how much performance is > lost by using it and even less sure if anybody actually uses it. It may be > ca

Re: check-bios-nx

2010-05-10 Thread Jim Tarvid
Fascinating in a perverse way. The NX (no execute bit) is a tacit concession that Von Neumann architecture is a mistake. Not sure how much performance is lost by using it and even less sure if anybody actually uses it. It may be called something else in the BIOS (perhaps data protection or enhanced

check-bios-nx

2010-05-10 Thread Mike.lifeguard
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi guys, I have a desktop that's masquerading as a server now - at login motd has a warning about not having NX enabled[0]. Running check-bios-nx claims the processor is NX-capable, but the BIOS has disabled it[1]. I upgraded the BIOS & c