Rob van der Heij wrote:
On Thu, Apr 24, 2008 at 7:05 PM, Michael O'Reilly <[EMAIL PROTECTED]> wrote:
Because the System Z architecture doesn't have these two limitations, it
doesn't support ISA cards and it is a 64-bit architecture, you only need
one zone.
Beg to differ. We use that to separate under 2GB and above 2GB because
some things in live need to happen under the Bar (like channel
programs). So when all is under the Bar (vmsize < 2G) you just have
one zone.
Michael made me do it.
I'm running Sl5 (RHEL-clone 5) on two systems here, one 32-bit PC and
the other 64-bit PC. Additionally I have Fedora 9-beta on a 64-bit PC.
SL5, 32-bit (1 Gb RAM) has DMA and HighMem.
SL5, 64-bit (5 Gb RAM) has DMA. Beats me, haven't seen an ISA bus since
P III.
F9-beta 64-bit (2 Gbyte RAM) has DMA and DMA-32.
The 64-bit systems are HP DC7700s, the only significant difference I
know about is the CPUs, AFAIK the mobos are identical. Just to be clear,
the system with most RAM has one zone.
--
Cheers
John
-- spambait
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