Re: dom0 boot failure with 256G

[Mukesh Rathor <mukesh.rathor@oracle.com>]

Keir Fraser wrote:
> 
> 
> On 5/6/08 08:24, "Keir Fraser" <keir.fraser@eu.citrix.com> wrote:
> 
>>> 256GB is more than a 32b dom0 can handle. Presumably it works if you set
>>> dom0_mem= to something smaller?
>>>
>>> We should probably make the clipping of dom0 memory to something like
>>> 64GB automatic.
>> Xen ought to have crashed during dom0 build in that case, being unable to
>> allocate enough memory of the restricted address width supported by the 32b
>> dom0 guest. I agree that dom0_mem should be automatically intelligently
>> clamped. Currently nr_pages is clamped to UINT_MAX (!) for a 32b dom0, which
>> is still rather a big number.
> 
> Actually compat guests are good for up to 128GB, so you should be fine with
> no dom0_mem= parameter.
> 
>  -- Keir
> 

No, it crashed without dom0_mem paramater after I fixed the physaddr_bitsize 
in construct_dom0(). It looked like it was allocating almost 256G to dom0... 
things are fine now with dom0_mem= specified.

thanks
mukesh