> -----Original Message-----
> From: xen-users-bounces@lists.xensource.com
> [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of ?? ?
> Sent: 29 May 2007 08:47
> To: xen-users@lists.xensource.com; xen devel
> Subject: [Xen-users] Dom0 Maximum Memory Support
>
> Hi there,
>
> I am running SLES 10 32 bits in PAE modes, I installed 32 GB
> physical memory, but only find 16GB when booted into Xen
> kernel in Domain 0.
>
> Is this a constraint for Xen 32 bits PAE?
Yes, the limit for 32-bit PAE is 16GB, and it''s because Xen uses the
upper two bits for "internal use" in the page-table entry.
If you use 64-bit Xen hypervisor + Dom0 and use the latest 3.1 release, you
should be able to run 32-bit PAE guests on top of that, and use ALL the memory
in the machine. Or simply use 64-bit guests as well, of course.
--
Mats>
> Rgds
> Hutner Tang
>
>
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