please somebody help me to enable the pae cpu option, how to?
i need it for vmware my cpu sony vaio vgn-u70p 1ghz pentium m as much as i know i should have it, i mean the pae option in the cpu.

The pae flag is not set in your config ... you may be able to turn it on via the kernel line in grub (enable-pae) - otherwise you will have to recompile the kernel.

Usually this will be autodetected when you install and switched on if it should be there. Is, for eg, for my 2.2GHz Celeron.

thank you very much for the reply, unfotunately it didnt help, seems like i have to recompile, but how is the option called in the kernel config menu, i cant find it, i have the following kernel version "2.6.13-15.8"
on suse linux 10
thank you in advance

in xconfig - processor type > high memory > 4Gb.

i tried but it still doesnt show up in cpuinfo under proc.
and vmware is still requesting pae, i did enale pae in the vmware virtual machine to. but it has no effect, and im sure ihave the option, because when i try to boot from the same cd/dvd natively, it works.

ps.: thank you for your help, and thanks in advance

What exactly did you do?

when you go to you kernel source directory, you types "make xconfig" then looked through the menue until you found "processor type" et al ... you saw the check boxes for "off", "4GB", and "64GB".

Was the 4GB box already checked? With a dot or a tick?

Then you compiled the kernel? How? What commands did you issue?

Then you rebooted into the newly compiled kernel?

Then you idd cat /proc/cpuinfo ?

there was a dot

and cpuinfo gives

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 9
model name : Intel(R) Pentium(R) M processor 1000MHz
stepping : 5
cpu MHz : 595.610
cache size : 1024 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 tm pbe est tm2
bogomips : 1193.87


i compiled the kernel with

make && make modules_install

and after that restart

anything? any idea?

was the 4Mb box already checked?

make sure you are booting into the correct kernel with the grub menue.

did you try to enable pae on the grub kernel line?

The thing is - the kernel should be detecting the cpu capability here and then just sticking in the things the cpu can do. The high mem stuff should also come in automatically if you have more than 4Mb.

If all else fails, you could try recompiling with the 4Mb module compiled right into the kernel instead of just as a loadable module. Then it is definately there, and we can eliminate it from consideration.

I solved the problem this way:

Go to your vmware directory in your user directory
like /home/user/vmware/

cd to the directory of guest OS.. There you should find a file like Windows XP Home Edition.vmx file

edit it with a text editor and look for the line: paevm =

if it is present, then make sure is is paevm = "TRUE"

there was not such a line in my .vmw file but I added it at the bottom of file and it works fine now.

hrmm seems not to work with osx86
anybody any idea?

Hi,

Unfortunately, it seems that pae isn't supported in early generations of the pentium-m processor.

from http://www.gossamer-threads.com/list.../kernel/699332

For instance, here is my pentium-m info:

It my have something to do with my higher model number.

Hate to break the bad news, but your cpu may not support it at all.

As a last resort, try compiling the kernel with pentium-m selected in the xconfig's "processor type and features" and disable the "generic x86" just below it.

Sam