check-bios-nx
Eric
eric at linuxsystems.net
Tue May 11 05:32:27 UTC 2010
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 <tarvid at ls.net> 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 called something else in the BIOS
> (perhaps data protection or enhanced virus protection). http://kerneltrap.org/node/3240
>
> Burroughs large systems incorporated an NX like feature in its
> memory mapping scheme. http://www.groupsrv.com/computers/about487.html
>
> I suspect this discussion is academic since Intel's support of the
> NX bit has not been consistent which could lead to a coding nightmare.
>
> I've put this conversation back on the ubuntu-server list, perhaps
> someone else has wisdom.
>
> Jim
>
> On Mon, May 10, 2010 at 10:13 PM, Mike.lifeguard <mike.lifeguard at gmail.com
> > wrote:
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> Hash: SHA1
>
> On 10-05-10 10:49 PM, Jim Tarvid wrote:
> > Why not post /proc/cpuinfo and hwinfo --cpu here? You may have
> talked me
> > into investing a little in this box.
>
> Sure thing:
>
> mikelifeguard at binnie:~$ cat /proc/cpuinfo
> processor : 0
> vendor_id : GenuineIntel
> cpu family : 15
> model : 4
> model name : Intel(R) Pentium(R) 4 CPU 3.00GHz
> stepping : 1
> cpu MHz : 2992.688
> cache size : 1024 KB
> physical id : 0
> siblings : 2
> core id : 0
> cpu cores : 1
> apicid : 0
> initial apicid : 0
> fdiv_bug : no
> hlt_bug : no
> f00f_bug : no
> coma_bug : no
> fpu : yes
> fpu_exception : yes
> cpuid level : 5
> wp : yes
> flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge
> mca cmov pat
> pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe constant_tsc
> pebs
> bts pni dtes64 monitor ds_cpl cid xtpr
> bogomips : 5985.37
> clflush size : 64
> cache_alignment : 128
> address sizes : 36 bits physical, 32 bits virtual
> power management:
>
> processor : 1
> vendor_id : GenuineIntel
> cpu family : 15
> model : 4
> model name : Intel(R) Pentium(R) 4 CPU 3.00GHz
> stepping : 1
> cpu MHz : 2992.688
> cache size : 1024 KB
> physical id : 0
> siblings : 2
> core id : 0
> cpu cores : 1
> apicid : 1
> initial apicid : 1
> fdiv_bug : no
> hlt_bug : no
> f00f_bug : no
> coma_bug : no
> fpu : yes
> fpu_exception : yes
> cpuid level : 5
> wp : yes
> flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge
> mca cmov pat
> pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe constant_tsc
> pebs
> bts pni dtes64 monitor ds_cpl cid xtpr
> bogomips : 5985.46
> clflush size : 64
> cache_alignment : 128
> address sizes : 36 bits physical, 32 bits virtual
> power management:
>
> mikelifeguard at binnie:~$ sudo hwinfo --cpu
> 01: None 00.0: 10103 CPU
> [Created at cpu.304]
> Unique ID: rdCR.j8NaKXDZtZ6
> Hardware Class: cpu
> Arch: Intel
> Vendor: "GenuineIntel"
> Model: 15.4.1 "Intel(R) Pentium(R) 4 CPU 3.00GHz"
> Features:
> fpu,
> vme,
> de,
> pse,
> tsc,
> msr,
> pae,
> mce,
> cx8,
> apic,
> mtrr,
> pge,
> mca,
> cmov,
> pat,
> pse36,
> clflush,
> dts,
> acpi,
> mmx,
> fxsr,
> sse,
> sse2,
> ss,ht,tm,pbe,constant_tsc,pebs,bts,pni,dtes64,monitor,ds_cpl,cid,xtpr
> Clock: 2992 MHz
> BogoMips: 5984.79
> Cache: 1024 kb
> Units/Processor: 2
> Config Status: cfg=new, avail=yes, need=no, active=unknown
>
> 02: None 01.0: 10103 CPU
> [Created at cpu.304]
> Unique ID: wkFv.j8NaKXDZtZ6
> Hardware Class: cpu
> Arch: Intel
> Vendor: "GenuineIntel"
> Model: 15.4.1 "Intel(R) Pentium(R) 4 CPU 3.00GHz"
> Features:
> fpu,
> vme,
> de,
> pse,
> tsc,
> msr,
> pae,
> mce,
> cx8,
> apic,
> mtrr,
> pge,
> mca,
> cmov,
> pat,
> pse36,
> clflush,
> dts,
> acpi,
> mmx,
> fxsr,
> sse,
> sse2,
> ss,ht,tm,pbe,constant_tsc,pebs,bts,pni,dtes64,monitor,ds_cpl,cid,xtpr
> Clock: 2992 MHz
> BogoMips: 5985.34
> Cache: 1024 kb
> Units/Processor: 2
> Config Status: cfg=new, avail=yes, need=no, active=unknown
>
> mikelifeguard at binnie:~$ sudo dmidecode -t 4
> # dmidecode 2.9
> SMBIOS 2.31 present.
>
> Handle 0x0004, DMI type 4, 35 bytes
> Processor Information
> Socket Designation: WMT478/NWD
> Type: Central Processor
> Family: Unknown
> Manufacturer: GenuineIntel
> ID: 41 0F 00 00 FF FB EB BF
> Version: Intel(R) Pentium(R) 4 CPU 3.00GHz
> Voltage: 1.8 V
> External Clock: 100 MHz
> Max Speed: 3400 MHz
> Current Speed: 3000 MHz
> Status: Populated, Enabled
> Upgrade: Socket 478
> L1 Cache Handle: 0x0005
> L2 Cache Handle: 0x0006
> L3 Cache Handle: Not Provided
> Serial Number: Not Specified
> Asset Tag: Not Specified
> Part Number: Not Specified
>
> Thanks for the help,
> - -Mike
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>
>
> --
> Rev. Jim Tarvid, PCA
> Galax, Virginia
> http://ls.net
> http://drupal.ls.net
> http://crossleft.org
>
>
> --
> ubuntu-server mailing list
> ubuntu-server at lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/ubuntu-server
> More info: https://wiki.ubuntu.com/ServerTeam
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