Mailinglist Archive: opensuse (2040 mails)

[Frank Fiene <ffiene@xxxxxxxx>]

On Freitag, 8. Juni 2007, Randall R Schulz wrote:
> On Friday 08 June 2007 11:43, Frank Fiene wrote:
> > On Freitag, 8. Juni 2007, Philipp Thomas wrote:
> > > * Frank Fiene (ffiene@xxxxxxxx) [20070604 11:30]:
> > > > Also 32bit Linux kernel should be fine with PAE, not?
> > >
> > > Yes, it is. But in order to get a 32bit kernel that supports PAE,
> > > you need to replace the installed kernel-default package by the
> > > kernel-bigsmp one. And even then you might not see the whole 4
> > > GiB, because the BIOS reserves some address space for PCI
> > > devices.
> >
> > OK, i see.
> >
> > But OP was about 64bit kernel. So why does my openSUSE-10.2-64bit
> > behave like this? I am wondering that i am the only one with a
> > 4GB-Thinkpad(-Z-Series)!
>
> Some (many) 64-bit processors have 32-bit compatibility modes. And
> most mainboards support multiple processors. Mainboard BIOSes for
> boards that support such processors have to be able to be configured
> for all the processors they support. Since there's no
> one-size-fits-all approach to this issue if both 64 and non-PAE
> 32-bit chips or operating system can be used, they make it a BIOS
> configuration option.
>
> So you, as the person who knows what processor, how much RAM and what
> OS are being used, must take this information and choose a suitable
> setting for those BIOS options.

Yes,  but as i described before, two identical machines, Lenovo Z61p, 
4GB RAM, Dial 2 Core T7200 with latest BIOS.

Running with Vista 32bit: 4Gig available.
Running openSUSE-10.2-64bit: 3Gig available (as with Ubuntu-7-64bit)

So maybe BIOS is configured for PAE and has problems with 64bit kernels?
Should i test with Vista-64bit?

And i can really not find any BIOS setting regarding memory!

Frank
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